Cefn Sidan today
- Beach day Not today Not a beach day · 0/10
- Tide now 4.4 ft ↑ rising · high 7:53 am (31.1 ft)
- Best time to fish 2:20–3:00 pm great day · 9/10
- Waves · water 4.0 ft · 57 °F slight · 8.5 s from the southwest
- Wind · air 7 mph · 56 °F from the SSW, gusts 12 · overcast
- Surf today 2.5–3.9 ft Fair day · 4/10 · 7:00–10:00 am
- Sun 7:06 am–4:56 pm 9 h 49 min of daylight
- Moon 85% · 6:39 pm waning gibbous · rises at 6:39 pm
Today in Cefn Sidan there are high tides at 7:53 am (31.1 ft) and 8:19 pm (30.3 ft) and low tides at 1:34 am and 1:55 pm. Tide coefficient 90. Right now the tide is rising toward the high tide at 7:53 am. The sun rises at 7:06 am and sets at 4:56 pm: 9 h 49 min of daylight. The moon is 85% illuminated (waning gibbous) and rises at 6:39 pm. Major solunar periods run from 1:44 am to 3:44 am and from 2:16 pm to 4:16 pm. The next spring tides arrive from November 9 to 11. The sea is slight, with 4.0 ft waves. There's a light breeze from the south-southwest (7 mph). Overcast, 56 °F.
Beach day in Cefn Sidan
Is it a beach day?
- Onshore breeze (11 mph)
- Low tide at 1:55 pm: more sand
- Cloudy (99% cloud cover)
- Feels like 53 °F: chilly for the beach
- Swim with care: 3.5 ft waves every 8 s; moderate rip current risk
- Water at 57 °F (very cold)
Today, hour by hour
- Swimming Use care · 3.5 ft
3.5 ft waves every 8 s: swim with care and stay where you can stand. Moderate rip current risk. Always follow the lifeguard's flags.
- Water 57 °F
Very cold: ease in and keep swims short.
- Sun & sunscreen UV 1 · SPF 15
Max UV 1 (low): SPF 15 sunscreen.
- Wind 11 mph
Onshore breeze (11 mph).
- Tide & sand 1:55 pm
Low tide at 1:34 am and 1:55 pm: that's when there's the most sand. High tide at 7:53 am and 8:19 pm. Coefficient 90 (spring tides): little sand left at high tide.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority. How it works · The next 7 days
About Cefn SidanThe beach
3.9 mi from Kidwelly. Tides, weather and sun in Kidwelly →
- RNLI lifeguards in season
- Restrooms
- Parking
Amenities from OpenStreetMap: some may be missing or out of date. See on OpenStreetMap · Fix on OpenStreetMap
UK bathing water quality: Natural Resources Wales. Contains public sector information licensed under the Open Government Licence v3.0. Full attribution. Lifeguards: RNLI. Contains Open Data licensed under the GIS Open Data Licence.
Beaches near Cefn Sidan
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Scott's Bay 4.0 mi · N
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL).
Webcams near Cefn Sidan
Webcams provided by windy.com — add a webcam
Fishing in Cefn Sidan today
Best time to fish
Solunar activity today: medium- Low tide at 1:55 pm
- Major period 2:16–4:16 pm
- Steady pressure (30.30 inHg), light onshore wind (11 mph) and some swell (3.1 ft waves) to stir the water
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 90 (spring tides)
- A major period lines up with sunset
Your day at a glance
The best window, 2:20 pm to 3:00 pm, combines the 1:55 pm low tide, a major period, a light onshore breeze and some swell. Also worth a try from 6:50 am to 8:00 am, with the 7:53 am high tide, sunrise, a light onshore breeze and some swell, though with rising pressure. Also worth a try from 1:40 am to 2:30 am, with the 1:34 am low tide, a major period, a light onshore breeze and some swell, though with rising pressure.
Species with the most records nearby: common sole, small-spotted catshark, European plaice and thornback ray. October is one of the months when these are seen most: common sole and European plaice. What you can catch
Tides in Cefn Sidan
Today's high and low tides
- ▼ Low tide 1:34 am 3.6 ft
- ▲ Next high tide 7:53 am 31.1 ft · coef. 90
- ▼ Low tide 1:55 pm 4.2 ft
- ▲ High tide 8:19 pm 30.3 ft · coef. 86
↑ Rising The tide is rising. 5 h 37 min to high tide at 7:53 am.
Tide coefficient 90 for the 7:53 am high tide and 86 for the 8:19 pm high tide. Spring tides. The water rises and falls 27.4 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?
2026 extremes: the highest tide of the year is on March 21 (32.6 ft) and the lowest, on March 20 (1.3 ft).
Semidiurnal: two high and two low tides a day, of similar height.
Heights above chart datum: the lowest astronomical tide (LAT), the zero of nautical charts in Europe. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. chart datum (LAT)
Tide coefficient and range in October
The biggest tides of the month came from October 26 to 28 (coefficient 97, 29.4 ft range). The smallest, from October 19 to 20 (coefficient 30, 9.5 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Thu 29 | 7:06 am · 4:56 pm | Low tide 1:34 am · 3.6 ft | High tide 7:53 am · 31.1 ft | Low tide 1:55 pm · 4.2 ft | High tide 8:19 pm · 30.3 ft | Coef. 90 | 85% | Major periods 1:44 am · 2:16 pm | Medium |
| Fri 30 | 7:08 am · 4:54 pm | Low tide 2:15 am · 5.0 ft | High tide 8:37 am · 29.8 ft | Low tide 2:40 pm · 5.7 ft | High tide 9:07 pm · 28.5 ft | Coef. 81 | 76% | Major periods 2:48 am · 3:20 pm | Medium |
| Sat 31 | 7:10 am · 4:52 pm | Low tide 3:00 am · 6.7 ft | High tide 9:27 am · 28.1 ft | Low tide 3:32 pm · 7.5 ft | High tide 10:01 pm · 26.5 ft | Coef. 69 | 65% | Major periods 3:51 am · 4:21 pm | Medium |
| Sun 1 | 7:11 am · 4:50 pm | Low tide 3:55 am · 8.7 ft | High tide 10:27 am · 26.4 ft | Low tide 4:42 pm · 9.2 ft | High tide 11:10 pm · 24.8 ft | Coef. 57 | Last quarter | Major periods 4:50 am · 5:17 pm | Medium |
| Mon 2 | 7:13 am · 4:48 pm | Low tide 5:16 am · 10.3 ft | High tide 11:44 am · 25.1 ft | Low tide 6:17 pm · 10.1 ft | — | Coef. 48 | 43% | Major periods 5:44 am · 6:09 pm | Medium |
| Tue 3 | 7:15 am · 4:46 pm | High tide 12:33 am · 24.0 ft | Low tide 6:52 am · 10.5 ft | High tide 1:08 pm · 25.0 ft | Low tide 7:44 pm · 9.5 ft | Coef. 48 | 32% | Major periods 6:33 am · 6:57 pm | Medium |
| Wed 4 | 7:17 am · 4:45 pm | High tide 1:54 am · 24.6 ft | Low tide 8:11 am · 9.3 ft | High tide 2:24 pm · 26.2 ft | Low tide 8:53 pm · 8.0 ft | Coef. 56 | 23% | Major periods 7:20 am · 7:42 pm | Medium |
▲ high tide · ▼ low tide · heights above chart datum (LAT). Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Where this tide comes from
Cefn Sidan has no station of its own, so we use the tide at Mumbles (TICON-4), 20 mi away. On the open coast the difference is usually a few minutes and inches; inside estuaries, rivers and enclosed bays it can be much larger.
Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data
The sea at Cefn Sidan
Sea stateSea state: slight
The waves you may find
- Most commonMost common2.0 ft
- Significant4.0 ft
- Highest expectedHighest8.0 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 8.0 ft. Before heading out, expect waves of up to 8.0 ft.
Wind on the coast and offshore
Onshore wind. The coast faces southwest and the wind blows straight in from the sea: more surf and backwash at the shore, and bait and boats drift toward land.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Thursday 29: 4.3 ft with a period of 9 s, from the southwest (moderate).
Water temperature
Water temperature →Water temperature changes how fish behave: in very cold or very warm water they feed less. The water cools over the next few days: about 55.3 °F by Wednesday 4.
Water about normal for late October.
Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses
Water temperature →Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 2:16 am (local time).
Nearest buoy
This is a real measurement of the sea, not a forecast. Data from Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS), via the E.U. Copernicus Marine Service. Generated using E.U. Copernicus Marine Service Information (doi:10.48670/moi-00036).
Surf in Cefn Sidan today
Surf today
Fair- 2.5–3.9 ft surf at the shore, a fun size for most surfers
- 3.3 ft swell at 7 s from the southwest, short: weak, messy waves
- Light cross-shore wind (5 mph)
- Falling tide (low tide at 1:55 pm)
- Light: First light 6:31 am · sunrise 7:06 am · sunset 4:56 pm · last light 5:31 pm
- Tide: low 1:34 am (3.6 ft), high 7:53 am (31.1 ft), low 1:55 pm (4.2 ft) and high 8:19 pm (30.3 ft). Every break has its own tide: some work at low tide and others at high tide. The tide doesn’t change the score here.
- Water at 56.5 °F: a 5/4 fullsuit with booties (and a hood if it’s windy).
- Energy: 105 kJ · Medium power
Today’s surf at a glance
The best window, 7:00 am to 10:00 am, has a good size, though with a short-period swell.
An estimate for this stretch of coast, not for a specific break: every beach or reef works its own way (its tide, bottom and angle). Check it when you get there.
Follow the flags and the lifeguards, and don’t paddle out if the surf is above your level: this score is a guide, not a substitute for what you see when you get there.
Diving in Cefn Sidan today
Diving and snorkeling today
Likely visibility: poor- Slack water around low tide (1:55 pm): little current from 1:30 pm to 2:30 pm
- 2.5 ft swell at 7 s from the west-southwest: some surge on the bottom
- Light onshore wind (11 mph)
- 0.2 mph current toward the northeast, weak (model)
- Sun high: more light underwater
- Slack water today: low tide 1:34 am (1:10–2:00 am), high tide 7:53 am (7:30–8:20 am), low tide 1:55 pm (1:30–2:30 pm) and high tide 8:19 pm (8:00–8:40 pm)
- Likely visibility: poor. Swell (up to 6.4 ft at 9 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 56.5 °F: a 7 mm semi-dry suit, with hood, gloves and booties.
- Snorkeling: doable, with some waves or wind.
- Night dive: dark from 5:31 pm. Waning gibbous (85%), rising at 6:39 pm: a bright night.
Your diving day at a glance
The best window, 1:00 pm to 3:00 pm, combines slack water at low tide, light wind, weak current and the sun high.
Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.
Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.
Dive sites, wrecks and dive shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Teviotdale 0.3 mi
- Craigwhinnie 1.8 mi
- Paul 1.9 mi
- Creag Mhor 6.4 mi
- Shane 6.4 mi
- Lady Sheila 11 mi
- Wreck 3.3 mi
- Wreck 3.8 mi
- Wreck 5.3 mi
- Wreck 6.8 mi
- Wreck 7.8 mi
- Gower Coast National Nature Reserve 11 mi
Within 12 mi. Some may be missing or closed; marine reserves usually need a permit. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Wreck and reef positions are approximate and not for navigation; a wreck’s depth runs from the top of the hull to the seabed.
Sites: © OpenStreetMap contributors (ODbL). Wrecks: EMODnet Human Activities (AND-International), from UK Hydrographic Office data, CC BY 4.0. Contains public sector information licensed under the Open Government Licence v3.0.
Weather in Cefn Sidan
Now in Cefn Sidan
- Low / high
- 53 / 57 °F
- Rain
- 0.01 in · 6%
- Clouds
- 100%
- Humidity
- 88%
- Dew pointDew point
- 53 °F
- Visibility
- 15 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Fair · 31
- Saharan dust
- No
- Pollen
- None
Pressure and fishing
- ↗ RisingRising Anglers say fish bite less for a while
- → SteadySteady · now Anglers expect normal activity
- ↘ FallingFalling Anglers say fish feed more before the change
Steady now (−0.01 inHg in 3 hours). Over the next 48 hours: +0.12 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.
Today, hour by hourHour by hour
Bars: mean wind. Dashed line: gusts. Arrows point where the wind blows to.
| Time | 12:00 am | 3:00 am | 6:00 am | 9:00 am | 12:00 pm | 3:00 pm | 6:00 pm | 9:00 pm |
|---|---|---|---|---|---|---|---|---|
| Sky | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast |
| Temperature | 56° | 56° | 55° | 55° | 57° | 57° | 56° | 54° |
| Wind (mph) | 9 SW | 7 SSW | 6 SSE | 6 SE | 11 SE | 11 SE | 9 SE | 9 SE |
| Gusts | 14 | 12 | 9 | 10 | 17 | 18 | 15 | 15 |
| Waves | 4.3 ft | 3.9 ft | 3.6 ft | 3.4 ft | 3.2 ft | 3.1 ft | 3.2 ft | 3.3 ft |
| Rain | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in |
- 3:00 am 56° 7 SSW 3.9 ft
- 6:00 am 55° 6 SSE 3.6 ft
- 9:00 am 55° 6 SE 3.4 ft
- 12:00 pm 57° 11 SE 3.2 ft
- 3:00 pm 57° 11 SE 3.1 ft
- 6:00 pm 56° 9 SE 3.2 ft
- 9:00 pm 54° 9 SE 3.3 ft
- 12:00 am 53° 11 ESE 3.3 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 53 / 57 °F | 11 mph SSE | 4.3 ft | 7:53 am · 8:19 pm | |
| Fri 30 | 48 / 58 °F | 11 mph ESE | 3.4 ft | 8:37 am · 9:07 pm | |
| Sat 31 | 43 / 56 °F | 7 mph ENE | 3.3 ft | 9:27 am · 10:01 pm | |
| Sun 1 | 43 / 58 °F | 7 mph NNE | 2.2 ft | 10:27 am · 11:10 pm | |
| Mon 2 | 46 / 53 °F | 11 mph NE | 1.2 ft | 11:44 am | |
| Tue 3 | 43 / 53 °F | 13 mph NE | 1.0 ft | 12:33 am · 1:08 pm | |
| Wed 4 | 46 / 54 °F | 11 mph ENE | 1.4 ft | 1:54 am · 2:24 pm | |
| Thu 5 | 46 / 52 °F | 11 mph ENE | 1.7 ft | 3:02 am · 3:25 pm | |
| Fri 6 | 44 / 51 °F | 13 mph E | 2.4 ft | 3:56 am · 4:16 pm | |
| Sat 7 | 44 / 51 °F | 14 mph E | 5.4 ft | 4:41 am · 4:59 pm | |
| Sun 8 | 51 / 55 °F | 13 mph ESE | 2.8 ft | 5:21 am · 5:38 pm | |
| Mon 9 | 56 / 57 °F | 11 mph SE | 2.9 ft | 5:58 am · 6:14 pm | |
| Tue 10 | 54 / 57 °F | 11 mph SSE | 2.2 ft | 6:32 am · 6:47 pm | |
| Wed 11 | 55 / 56 °F | 16 mph SSW | 4.3 ft | 7:04 am · 7:18 pm |
- Fri 30 Overcast 48° / 58° 3.4 ft
- Sat 31 Fog 43° / 56° 3.3 ft
- Sun 1 Fog 43° / 58° 2.2 ft
- Mon 2 Overcast 46° / 53° 1.2 ft
- Tue 3 Overcast 43° / 53° 1.0 ft
- Wed 4 Partly cloudy 46° / 54° 1.4 ft
- Thu 5 Partly cloudy 46° / 52° 1.7 ft
Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.
- Normal Today, normal highs for late October (56 °F). Climate by month →
Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 2:16 am (local time).
The sun in Cefn Sidan
Sunrise and sunset
- First light 5:52 am
- Full dark 6:10 pm
- Civil dawn 6:31 am
- Civil dusk 5:31 pm
- Solar noon 12:01 pm (25° high)
- Daylight 9 h 49 min (−4 min)
- Evening golden hour 4:06 pm
- Full dark 6:10 pm
Golden hour and the day-night map
Today the sun is 92,335,256 mi away and looks 32′ 11″ across.
The moon in Cefn Sidan
Moon phase and position
Today the moon is 226,641 mi away and looks 32′ 45″ across.
Solunar periods
Today's activity: medium- 1:44–3:44 am Major · the moon passes overhead · high activity
- 2:16–4:16 pm Major · the moon passes underfoot · high activity
- 11:23 am–12:23 pm Minor · moonset · medium activity
- 6:09–7:09 pm Minor · moonrise · medium activity
According to solunar theory, fish feed more when the moon passes overhead or underfoot (major periods, about 2 h) and when it rises or sets (minor periods, 1 h). It works best around new and full moon.
Upcoming moon phases
2026 moon calendar →- Last quarter Sun, Nov 1 · 8:29 pmNov 1 in 3 days
- New moon Mon, Nov 9 · 7:03 amNov 9 in 11 days
- First quarter Tue, Nov 17 · 11:48 amNov 17 in 19 days
- Full moon Tue, Nov 24 · 2:54 pmNov 24 in 26 days
Next perigee (the moon at its closest to Earth): November 25, 223,281 mi away.
Where to fish in Cefn Sidan
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Jetty 8.7 mi
- Jetty 9.1 mi
- Boat ramp 5.7 mi
- Boat ramp 5.8 mi
- Boat ramp 6.9 mi
- No. 3 Slip 7.4 mi
- Boat ramp 8.0 mi
- Boat ramp 8.7 mi
- Boat ramp 8.9 mi
- Boat ramp 9.0 mi
- Boat ramp 9.1 mi
- Boat ramp 9.2 mi
Within 9.3 mi. A spot may be missing or closed. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Spots: © OpenStreetMap contributors (ODbL) and Overture Maps.
Water depth
Very shallowVery shallow and flat: 3.1 mi from shore the water is still only about 22 ft deep.
From the shoreline out to sea, heading southwest.
How far from shore
- 16 ft deep2.5 mi
- 33 ft deepnot within 3.1 mi
- 66 ft deepnot within 3.1 mi
- 164 ft deepnot within 3.1 mi
For fishing, swimming and diving
- Shore fishing. Shallow, gradual bottom (16 ft at 2.5 mi): cast far from the beach and fish the high tide, when there is more water close in.
- Swimming. A very gentle way in with plenty of shallow water, good for kids. At low tide the water can be far out.
- Diving. Shallow: the water doesn't reach 33 ft within 3.1 mi. For deeper dives, take a boat farther out.
Source: EMODnet Bathymetry DTM 2024 (CC BY 4.0), cells of about 380 ft; depth at the lowest astronomical tide. For reference only: not for navigation or anchoring.
Nearest lighthouse
Burry Port Lighthouse 5.8 mi east
- Light
- A white flash every 5 s · Fl W 5s
- Range
- 7 nautical miles (8.1 mi)
- Light height
- 23 ft above sea level
- Built
- 1842
Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikipedia · Wikidata · Sources and licenses
Tides near Cefn SidanTides nearby
- Kidwelly3.9 mi
- Ferryside4.3 mi
- Laugharne5.8 mi
- Burry Port5.8 mi
- Llanmadoc8.2 mi
- Llanelli9.4 mi
- Rhossili10 mi
- Carmarthen11 mi
- Crofty12 mi
- Penclawdd13 mi
Cefn Sidan at a glance
- Beach. Coordinates: 51.705° N, 4.379° W.
- It is 11 mi south of Carmarthen, the main place in Carmarthenshire. The sun rises at the same time and sets 1 min later than in Carmarthen.
- 3.9 mi from Kidwelly.
- The nearest tide station, Mumbles, is 20 mi to the southeast.
- Its coast faces southwest.
Questions about Cefn SidanQuestions
Where is Cefn Sidan?
3.9 mi from Kidwelly, in Carmarthenshire (United Kingdom). The shore faces southwest.
What amenities does Cefn Sidan have?
According to OpenStreetMap: RNLI lifeguards in season, restrooms and parking. Some may be missing or out of date, so ask at the beach.
How clean is the water at Cefn Sidan?
Excellent water quality in the official rating for the 2025 season (Natural Resources Wales).
What time is high tide today in Cefn Sidan?
Today in Cefn Sidan there are high tides at 7:53 am (31.1 ft) and 8:19 pm (30.3 ft) and low tides at 1:34 am and 1:55 pm. Tide coefficient 90.
What time is sunset today in Cefn Sidan?
At 4:56 pm. There is light until the end of civil twilight, at 5:31 pm.
What time is sunrise tomorrow in Cefn Sidan?
At 7:08 am. First light comes at 5:53 am.
What phase is the moon today?
Waning gibbous, 85% illuminated. New moon on Mon, Nov 9 · 7:03 am.
When are the next spring tides?
From November 9 to 11.
What are today's solunar periods?
Major 1:44–3:44 am, Minor 11:23 am–12:23 pm, Major 2:16–4:16 pm, Minor 6:09–7:09 pm. Today's activity is medium.
What's the weather like today in Cefn Sidan?
Overcast, from 53 °F to 57 °F, with a light breeze from the south-southwest (7 mph) and a 6% chance of rain.
How is the sea today in Cefn Sidan?
Slight (Douglas 3): 4.0 ft waves with a period of 8.5 s from the southwest. The water is 56.7 °F.
When is the best time to visit Cefn Sidan?
The best time to visit Cefn Sidan is from June to August: highs of 64 °F to 67 °F, about 12 rainy days a month and 7 hours of sunshine a day.
Can I use this data for navigation?
No. These are predictions for fishing and leisure; for navigation, use the official publications.
Where this data comes from
Tide: Mumbles station, with constants from TICON-4 (Hart-Davis, Dettmering and Seitz, 2025, SEANOE), licensed CC BY 4.0, via Slackwater database (changes). Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).