Porth Iago today
- Beach day Not today Not a beach day · 0/10
- Tide now 4.1 ft ↓ falling · low 4:46 am (2.9 ft)
- Best time to fish 4:00–5:30 pm good day · 8/10
- Waves · water 3.9 ft · 56 °F slight · 6.6 s from the southwest
- Wind · air 9 mph · 56 °F from the SSW, gusts 15 · overcast
- Sun 7:10 am–4:54 pm 9 h 44 min of daylight
- Moon 85% · 6:31 pm waning gibbous · rises at 6:31 pm
- Best time to dive 3:30–4:50 pm good day · 8/10
Today in Porth Iago there are high tides at 9:47 am (16.9 ft) and 10:13 pm (16.3 ft) and low tides at 4:46 am and 5:16 pm. Tide coefficient 95. Right now the tide is falling toward the low tide at 4:46 am. The sun rises at 7:10 am and sets at 4:54 pm: 9 h 44 min of daylight. The moon is 85% illuminated (waning gibbous) and rises at 6:31 pm. Major solunar periods run from 1:45 am to 3:45 am and from 2:17 pm to 4:17 pm. The next spring tides arrive from November 9 to 11. The sea is slight, with 3.9 ft waves. There's a gentle breeze from the south-southwest (9 mph). Overcast, 56 °F.
Beach day in Porth Iago
Is it a beach day?
- Calm for swimming: 3.5 ft waves
- Cloudy (99% cloud cover)
- Feels like 52 °F: chilly for the beach
- Moderate offshore wind (14 mph): it blows floats and inflatables out to sea
- Water at 56 °F (very cold)
- High tide at 9:47 am, coefficient 95: little sand left
Today, hour by hour
- Swimming Calm · 3.5 ft
3.5 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 56 °F
Very cold: ease in and keep swims short.
- Sun & sunscreen UV 1 · SPF 15
Max UV 1 (low): SPF 15 sunscreen.
- Wind 14 mph
Moderate offshore wind (14 mph). Skip the inflatables: offshore wind carries them out to sea.
- Tide & sand 4:46 am
Low tide at 4:46 am and 5:16 pm: that's when there's the most sand. High tide at 9:47 am and 10:13 pm. Coefficient 95 (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 Porth IagoThe beach
In Rhydlios, 1.2 mi from the center. Tides, weather and sun in Rhydlios →
Amenities from OpenStreetMap: some may be missing or out of date. See on OpenStreetMap · Fix on OpenStreetMap
Beaches near Porth Iago
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Porth Ferin 0.4 mi · NE
- Whistling Sands 1.0 mi · S
- Restrooms
- Parking
- Traeth Penllech 2.8 mi · NE
- Parking
- Porth Samddai 3.3 mi · S
- Restrooms
- Dogs allowed
- Porth Llanllawen 3.4 mi · S
- Banc Sidan 3.4 mi · S
- Restrooms
- Pwll Darllo 3.4 mi · S
- Porth Ysgo 4.1 mi · SE
- Parking
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 Porth Iago
Webcams provided by windy.com — add a webcam
Fishing in Porth Iago today
Best time to fish
Solunar activity today: medium- Low tide at 5:16 pm
- Major period 2:17–4:17 pm
- Sunset at 4:54 pm, golden hour from 4:03 pm
- Steady pressure (30.30 inHg), light offshore wind (11 mph) and some swell (3.5 ft waves) to stir the water
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 95 (spring tides)
- A major period lines up with sunset
Your day at a glance
The best window, 4:00 pm to 5:30 pm, combines the 5:16 pm low tide, a major period, sunset and some swell. Also worth a try from 8:50 am to 9:30 am, with the 9:47 am high tide and some swell, though with rising pressure.
Species with the most records nearby: small-spotted catshark, thornback ray, European plaice and whiting. October is one of the months when these are seen most: European plaice and whiting. What you can catch
Tides in Porth Iago
Today's high and low tides
- ▼ Next low tide 4:46 am 2.9 ft
- ▲ High tide 9:47 am 16.9 ft · coef. 95
- ▼ Low tide 5:16 pm 2.9 ft
- ▲ High tide 10:13 pm 16.3 ft · coef. 90
↓ Falling The tide is falling. 1 h 23 min to low tide at 4:46 am.
Tide coefficient 95 for the 9:47 am high tide and 90 for the 10:13 pm high tide. Spring tides. The water rises and falls 14.0 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 December 26 (17.7 ft) and the lowest, on August 14 (0.6 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 102, 14.7 ft range). The smallest, from October 19 to 20 (coefficient 26, 4.3 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 | 7:10 am · 4:54 pm | Low tide 4:46 am · 2.9 ft | High tide 9:47 am · 16.9 ft | Low tide 5:16 pm · 2.9 ft | High tide 10:13 pm · 16.3 ft | Coef. 95 | 85% | Major periods 1:45 am · 2:17 pm | Medium |
| Fri 30 | 7:12 am · 4:52 pm | Low tide 5:35 am · 3.7 ft | High tide 10:33 am · 16.3 ft | Low tide 6:08 pm · 3.5 ft | High tide 11:02 pm · 15.2 ft | Coef. 84 | 76% | Major periods 2:50 am · 3:22 pm | Medium |
| Sat 31 | 7:14 am · 4:50 pm | Low tide 6:27 am · 4.5 ft | High tide 11:23 am · 15.4 ft | Low tide 7:06 pm · 4.2 ft | High tide 11:57 pm · 13.9 ft | Coef. 71 | 65% | Major periods 3:53 am · 4:23 pm | Medium |
| Sun 1 | 7:16 am · 4:48 pm | Low tide 7:26 am · 5.3 ft | High tide 12:21 pm · 14.3 ft | Low tide 8:16 pm · 4.7 ft | — | Coef. 57 | Last quarter | Major periods 4:51 am · 5:19 pm | Medium |
| Mon 2 | 7:18 am · 4:46 pm | High tide 1:02 am · 12.7 ft | Low tide 8:36 am · 5.8 ft | High tide 1:30 pm · 13.4 ft | Low tide 9:34 pm · 4.8 ft | Coef. 52 | 43% | Major periods 5:45 am · 6:10 pm | Medium |
| Tue 3 | 7:20 am · 4:44 pm | High tide 2:19 am · 11.9 ft | Low tide 9:54 am · 5.7 ft | High tide 2:50 pm · 13.0 ft | Low tide 10:48 pm · 4.3 ft | Coef. 49 | 32% | Major periods 6:35 am · 6:58 pm | Medium |
| Wed 4 | 7:22 am · 4:43 pm | High tide 3:42 am · 12.0 ft | Low tide 11:05 am · 5.1 ft | High tide 4:11 pm · 13.3 ft | Low tide 11:49 pm · 3.7 ft | Coef. 57 | 23% | Major periods 7:21 am · 7:43 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
Porth Iago has no station of its own, so we use the tide at Barmouth (Environment Agency), 30 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: This uses Environment Agency tide gauge data from the real-time data API (Beta): Barmouth (E73224), https://environment.data.gov.uk/flood-monitoring/id/stations/E73224. Contains public sector information licensed under the Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/). Modified: harmonic constants fitted by TidePlanet from the 15-minute sea levels of 2025-10-29 to 2026-10-22 (348 days).
The sea at Porth Iago
Sea stateSea state: slight
The waves you may find
- Most commonMost common1.9 ft
- Significant3.9 ft
- Highest expectedHighest7.9 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 7.9 ft. Before heading out, expect waves of up to 7.9 ft.
Wind on the coast and offshore
The model doesn't separate offshore wind here: it's the same as on the coast.
Cross-shore wind. The coast faces west and the wind blows along the shore: drift and current run parallel to the beach.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Friday 30: 4.3 ft with a period of 6 s, from the south-southwest (moderate).
Water temperature
Water temperature →Water temperature changes how fish behave: in very cold or very warm water they feed less. The water is steady these days, with no sudden changes.
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 3:24 am (local time).
Surf in Porth Iago today
Surf today
Poor- 1.9–3.0 ft surf at the shore, a fun size for most surfers
- 2.9 ft swell at 6 s from the southwest, short: weak, messy waves
- Light offshore wind (10 mph): it holds up and grooms the waves
- Rising tide (high tide at 9:47 am)
- Light: First light 6:34 am · sunrise 7:10 am · sunset 4:54 pm · last light 5:30 pm
- Tide: low 4:46 am (2.9 ft), high 9:47 am (16.9 ft), low 5:16 pm (2.9 ft) and high 10:13 pm (16.3 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 56.3 °F: a 5/4 fullsuit with booties (and a hood if it’s windy).
- Energy: 51 kJ · Low power
Today’s surf at a glance
The best window, 7:00 am to 11:00 am, has a good size and light offshore wind, though with a short-period swell. 3:00 pm to 5:00 pm can also work, with light offshore wind, 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 Porth Iago today
Diving and snorkeling today
Likely visibility: fair- 2.4 ft swell at 4 s from the southwest: some surge on the bottom
- Light offshore wind (10 mph)
- 0.4 mph current toward the south, weak (model)
- Daylight
- Slack water today: low tide 4:46 am (4:20–5:01 am), high tide 9:47 am (9:32–10:02 am), low tide 5:16 pm (4:50–5:31 pm) and high tide 10:13 pm (9:58–10:30 pm)
- Likely visibility: fair. Swell (up to 5.1 ft at 7 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 56.3 °F: a 7 mm semi-dry suit, with hood, gloves and booties.
- Snorkeling: better not, with these waves, wind or current.
- Night dive: dark from 5:30 pm. Waning gibbous (85%), rising at 6:31 pm: a bright night.
Your diving day at a glance
The best window, 3:30 pm to 4:50 pm, combines light wind and weak current.
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
- Ilesha 7.4 mi
- Gwynfaen 8.7 mi
- Timbo 12 mi
- Wreck 3.5 mi
- Wreck 4.4 mi
- Wreck 5.0 mi
- Wreck 5.2 mi
- Wreck 5.3 mi
- Wreck 7.3 mi
- Wreck 10 mi
- Wreck 10 mi
- Wreck 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 Porth Iago
Now in Porth Iago
- Low / high
- 55 / 57 °F
- Rain
- 0.00 in · 4%
- Clouds
- 99%
- Humidity
- 89%
- Dew pointDew point
- 53 °F
- Visibility
- 14 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Fair · 34
- 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 (−0.00 inHg in 3 hours). Over the next 48 hours: +0.15 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° | 56° | 56° | 56° | 57° | 56° | 55° |
| Wind (mph) | 10 SW | 9 SSW | 8 SSW | 12 SSE | 14 SSE | 12 SSE | 13 SSE | 15 SSE |
| Gusts | 15 | 14 | 13 | 19 | 23 | 21 | 20 | 24 |
| Waves | 4.2 ft | 3.9 ft | 3.6 ft | 3.3 ft | 3.4 ft | 3.5 ft | 3.6 ft | 3.9 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° 9 SSW 3.9 ft
- 6:00 am 56° 8 SSW 3.6 ft
- 9:00 am 56° 12 SSE 3.3 ft
- 12:00 pm 56° 14 SSE 3.4 ft
- 3:00 pm 57° 12 SSE 3.5 ft
- 6:00 pm 56° 13 SSE 3.6 ft
- 9:00 pm 55° 15 SSE 3.9 ft
- 12:00 am 54° 15 SSE 4.1 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 55 / 57 °F | 15 mph SSE | 4.2 ft | 9:47 am · 10:13 pm | |
| Fri 30 | 54 / 57 °F | 16 mph SSE | 4.3 ft | 10:33 am · 11:02 pm | |
| Sat 31 | 52 / 56 °F | 6 mph SE | 2.8 ft | 11:23 am · 11:57 pm | |
| Sun 1 | 50 / 56 °F | 13 mph NNE | 2.9 ft | 12:21 pm | |
| Mon 2 | 49 / 53 °F | 12 mph ENE | 1.7 ft | 1:02 am · 1:30 pm | |
| Tue 3 | 50 / 54 °F | 13 mph ENE | 0.7 ft | 2:19 am · 2:50 pm | |
| Wed 4 | 51 / 54 °F | 14 mph E | 1.0 ft | 3:42 am · 4:11 pm | |
| Thu 5 | 51 / 54 °F | 17 mph E | 1.4 ft | 4:53 am · 5:16 pm | |
| Fri 6 | 49 / 53 °F | 19 mph ESE | 1.6 ft | 5:47 am · 6:07 pm | |
| Sat 7 | 48 / 51 °F | 17 mph ESE | 2.3 ft | 6:32 am · 6:51 pm | |
| Sun 8 | 49 / 56 °F | 17 mph ESE | 2.2 ft | 7:12 am · 7:30 pm | |
| Mon 9 | 56 / 56 °F | 16 mph SE | 2.3 ft | 7:50 am · 8:06 pm | |
| Tue 10 | 55 / 56 °F | 9 mph SE | 1.9 ft | 8:26 am · 8:41 pm | |
| Wed 11 | 55 / 56 °F | 19 mph S | 3.6 ft | 9:01 am · 9:15 pm |
- Fri 30 Overcast 54° / 57° 4.3 ft
- Sat 31 Overcast 52° / 56° 2.8 ft
- Sun 1 Overcast 50° / 56° 2.9 ft
- Mon 2 Overcast 49° / 53° 1.7 ft
- Tue 3 Overcast 50° / 54° 0.7 ft
- Wed 4 Partly cloudy 51° / 54° 1.0 ft
- Thu 5 Overcast 51° / 54° 1.4 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.
- The models They agree · high confidence for the next few days. See the models →
- Outlook Next few weeks, compared with normal: normal temperatures, normal rain and a slightly warmer sea. See the outlook →
- 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 3:24 am (local time).
The sun in Porth Iago
Sunrise and sunset
- First light 5:54 am
- Full dark 6:10 pm
- Civil dawn 6:34 am
- Civil dusk 5:30 pm
- Solar noon 12:03 pm (24° high)
- Daylight 9 h 44 min (−4 min)
- Evening golden hour 4:03 pm
- Full dark 6:10 pm
Golden hour and the day-night map
Today the sun is 92,335,233 mi away and looks 32′ 11″ across.
The moon in Porth Iago
Moon phase and position
Today the moon is 226,641 mi away and looks 32′ 45″ across.
Solunar periods
Today's activity: medium- 1:45–3:45 am Major · the moon passes overhead · high activity
- 2:17–4:17 pm Major · the moon passes underfoot · high activity
- 11:33 am–12:33 pm Minor · moonset · medium activity
- 6:01–7:01 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 Porth Iago
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
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
Drops off fastThe bottom drops off fast: the water is 33 ft deep just 500 ft from shore. It reaches 164 ft at 2.7 mi.
From the shoreline out to sea, heading west.
How far from shore
- 16 ft deep270 ft
- 33 ft deep500 ft
- 66 ft deep0.3 mi
- 164 ft deep2.7 mi
For fishing, swimming and diving
- Shore fishing. Deep water close in: about 27 ft just 330 ft out. Good for casting from rocks, jetties or the beach itself; current and surf hit harder here.
- Swimming. The bottom drops quickly near the shore and you are soon out of your depth. Keep an eye on kids and weak swimmers.
- Diving. Shore diving works here: 33 ft at 500 ft and 66 ft at 0.3 mi from shore.
Right by the shore the bottom may drop even faster than shown.
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.
Tides near Porth IagoTides nearby
- Morfa Nefyn9.2 mi
- Abersoch9.2 mi
- Nefyn10 mi
- Pwllheli13 mi
- Chwilog17 mi
- Criccieth21 mi
- Porthmadog25 mi
- Harlech26 mi
- Aberffraw26 mi
- Tal-y-bont27 mi
Porth Iago at a glance
- Beach. Coordinates: 52.851° N, 4.723° W.
- It is 28 mi southwest of Caernarfon, the main place in Gwynedd. The sun rises 1 min later and sets 3 min later than in Caernarfon.
- In Rhydlios, 1.2 mi from the center.
- The nearest tide station, Barmouth, is 30 mi to the east.
- Its coast faces west.
- Beaches and harbors nearby: Whistling Sands (1.1 mi), Traeth Penllech (2.9 mi), Porth Cadlan (4.0 mi), Porth Ysgo (4.1 mi).
Questions about Porth IagoQuestions
Where is Porth Iago?
In Rhydlios, 1.2 mi from the center, Gwynedd (United Kingdom). The shore faces west.
What amenities does Porth Iago have?
OpenStreetMap doesn't list its amenities. Check the town's website or ask at the beach.
What time is high tide today in Porth Iago?
Today in Porth Iago there are high tides at 9:47 am (16.9 ft) and 10:13 pm (16.3 ft) and low tides at 4:46 am and 5:16 pm. Tide coefficient 95.
What time is sunset today in Porth Iago?
At 4:54 pm. There is light until the end of civil twilight, at 5:30 pm.
What time is sunrise tomorrow in Porth Iago?
At 7:12 am. First light comes at 5:56 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 1:45–3:45 am, Minor 11:33 am–12:33 pm, Major 2:17–4:17 pm, Minor 6:01–7:01 pm. Today's activity is medium.
What's the weather like today in Porth Iago?
Overcast, from 55 °F to 57 °F, with a gentle breeze from the south-southwest (9 mph) and a 4% chance of rain.
How is the sea today in Porth Iago?
Slight (Douglas 3): 3.9 ft waves with a period of 6.6 s from the southwest. The water is 56.3 °F.
When is the best time to visit Porth Iago?
The best time to visit Porth Iago is from June to August: highs of 62 °F to 65 °F, about 12 rainy days a month and 6 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: Barmouth tide gauge (UK National Tide Gauge Network). This uses Environment Agency tide gauge data from the real-time data API (Beta), under the Open Government Licence v3.0; constants fitted by TidePlanet from a year of its readings. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).