Guissény tides today
- Tide now 18.7 ft ↑ rising · high 6:35 am (22.1 ft)
- Best time to fish 6:00–6:40 pm good day · 8/10
- Beach day Not today Not a beach day · 0/10
- Waves · water 5.0 ft · 59 °F moderate · 10.4 s from the west-northwest
- Wind · air 7 mph · 46 °F from the SE, gusts 8 · overcast
- Surf today 2.9–4.4 ft Good day · 7/10 · 7:26–11:00 am
- Sun 7:59 am–6:03 pm 10 h 4 min of daylight
- Moon 85% · 8:00 pm waning gibbous · rises at 8:00 pm
Today in Guissény there are high tides at 6:35 am (22.1 ft) and 7:01 pm (21.4 ft) and low tides at 12:39 am and 1:05 pm. Tide coefficient 93. Right now the tide is rising toward the high tide at 6:35 am. The sun rises at 7:59 am and sets at 6:03 pm: 10 h 4 min of daylight. The moon is 85% illuminated (waning gibbous) and rises at 8:00 pm. Major solunar periods run from 2:44 am to 4:44 am and from 3:16 pm to 5:16 pm. The next spring tides arrive from November 9 to 11. The sea is moderate, with 5.0 ft waves. There's a light breeze from the southeast (7 mph). Overcast, 46 °F.
Fishing in Guissény today
Best time to fish
Solunar activity today: medium- High tide at 7:01 pm, coefficient 88
- Sunset at 6:03 pm, golden hour from 5:18 pm
- Steady pressure (30.27 inHg), light offshore wind (4 mph) and some swell (3.2 ft waves) to stir the water
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 93 (spring tides)
Your day at a glance
The best window, 6:00 pm to 6:40 pm, combines the 7:01 pm high tide, sunset and some swell. Also good from 12:10 pm to 1:00 pm, with the 1:05 pm low tide, moonset and some swell. Also good from 3:30 pm to 4:30 pm, with a major period, falling pressure and some swell.
Species with the most records nearby: pollack, ballan wrasse, veined squid and Atlantic horse mackerel. October is one of the months when these are seen most: pollack and ballan wrasse. What you can catch
Beach day in Guissény
Is it a beach day?
- Low tide at 1:05 pm: more sand
- Cloudy (100% cloud cover)
- Feels like 55 °F: chilly for the beach
- Light offshore wind (9 mph): it blows floats and inflatables out to sea
- Swim with care: 4.3 ft waves every 10 s; moderate rip current risk
- Water at 59 °F (very cold)
Today, hour by hour
- Swimming Use care · 4.3 ft
4.3 ft waves every 10 s: swim with care and stay where you can stand. Moderate rip current risk. Always follow the lifeguard's flags.
- Water 59 °F
Very cold: ease in and keep swims short.
- Sun & sunscreen UV 2 · SPF 15
Max UV 2 (low): SPF 15 sunscreen.
- Wind 9 mph
Offshore breeze (9 mph). Watch floats and inflatables: offshore wind carries them out to sea.
- Tide & sand 1:05 pm
Low tide at 12:39 am and 1:05 pm: that's when there's the most sand. High tide at 6:35 am and 7:01 pm.
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
Beaches near Guissény
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- La Croix 0.3 mi · N
- Parking
- Plage des Barrachou 0.5 mi · NW
- Parking
- Plage de Lerret 0.5 mi · N
- Plage du Dibennou 1.0 mi · NW
- Restrooms
- Parking
Poor water quality 2025 season, EEA
- Plage de Poulfeunteun 1.1 mi · NW
Good water quality 2025 season, EEA
- Plage de Boutrouilles 1.4 mi · N
- Lifeguard
- Restrooms
- Parking
Excellent water quality 2025 season, EEA
- Plage de Karrec Hir 1.5 mi · NW
- Restrooms
- Parking
Excellent water quality 2025 season, EEA
- Plage du Vivier 1.6 mi · N
- 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). Bathing water quality: European Environment Agency (EEA), with data from the French Ministry of Health (baignades.sante.gouv.fr).
Webcams near Guissény
Webcams provided by windy.com — add a webcam
Tides in Guissény
Today's high and low tides
- ▼ Low tide 12:39 am 3.2 ft
- ▲ Next high tide 6:35 am 22.1 ft · coef. 93
- ▼ Low tide 1:05 pm 3.3 ft
- ▲ High tide 7:01 pm 21.4 ft · coef. 88
↑ Rising The tide is rising. 1 h 45 min to high tide at 6:35 am.
Tide coefficient 93 for the 6:35 am high tide and 88 for the 7:01 pm high tide. Spring tides. The water rises and falls 18.9 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 (23.3 ft) and the lowest, on August 14 (1.4 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 101, 20.3 ft range). The smallest, on October 19 (coefficient 26, 5.8 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 | 7:59 am · 6:03 pm | Low tide 12:39 am · 3.2 ft | High tide 6:35 am · 22.1 ft | Low tide 1:05 pm · 3.3 ft | High tide 7:01 pm · 21.4 ft | Coef. 93 | 85% | Major periods 2:44 am · 3:16 pm | Medium |
| Fri 30 | 8:01 am · 6:01 pm | Low tide 1:25 am · 4.2 ft | High tide 7:19 am · 21.2 ft | Low tide 1:54 pm · 4.4 ft | High tide 7:48 pm · 20.0 ft | Coef. 83 | 76% | Major periods 3:48 am · 4:20 pm | Medium |
| Sat 31 | 8:02 am · 6:00 pm | Low tide 2:15 am · 5.5 ft | High tide 8:09 am · 19.9 ft | Low tide 2:49 pm · 5.6 ft | High tide 8:44 pm · 18.5 ft | Coef. 69 | 66% | Major periods 4:51 am · 5:21 pm | Medium |
| Sun 1 | 8:04 am · 5:58 pm | Low tide 3:13 am · 6.8 ft | High tide 9:10 am · 18.6 ft | Low tide 3:54 pm · 6.8 ft | High tide 9:56 pm · 17.2 ft | Coef. 56 | Last quarter | Major periods 5:50 am · 6:18 pm | Medium |
| Mon 2 | 8:05 am · 5:56 pm | Low tide 4:21 am · 7.7 ft | High tide 10:28 am · 17.7 ft | Low tide 5:11 pm · 7.3 ft | High tide 11:26 pm · 16.8 ft | Coef. 48 | 43% | Major periods 6:44 am · 7:09 pm | Medium |
| Tue 3 | 8:07 am · 5:55 pm | Low tide 5:40 am · 7.9 ft | High tide 11:59 am · 17.7 ft | Low tide 6:32 pm · 7.1 ft | — | Coef. 49 | 33% | Major periods 7:33 am · 7:57 pm | Medium |
| Wed 4 | 8:09 am · 5:53 pm | High tide 12:50 am · 17.4 ft | Low tide 6:56 am · 7.3 ft | High tide 1:15 pm · 18.4 ft | Low tide 7:40 pm · 6.2 ft | Coef. 57 | 23% | Major periods 8:20 am · 8:42 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
Guissény has no station of its own, so we use the tide at Brest (TICON-4), 18 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 Guissény
Sea stateSea state: moderate
The waves you may find
- Most commonMost common2.5 ft
- Significant5.0 ft
- Highest expectedHighest10 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 10 ft. Before heading out, expect waves of up to 10 ft.
Wind on the coast and offshore
Offshore wind. The coast faces north and the wind blows from land out to sea: calm shore and clean waves, but watch the drift out to sea.
Wave height, next 7 daysWaves, next 7 days
Waves stay much the same all week. The biggest waves arrive on Thursday 29: 5.8 ft with a period of 11 s, from the west-northwest (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 warmer than normal for late October (+2.0 °F).
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 4:50 am (local time).
Nearest buoy
This is a real measurement of the sea, not a forecast. Data from Centre for Studies on Risks Environment Mobility and Urban Planning - Technical directorate Risks waters and sea (Plouzane), via the E.U. Copernicus Marine Service. Generated using E.U. Copernicus Marine Service Information (doi:10.48670/moi-00036).
Surf in Guissény today
Surf today
Good- 2.9–4.4 ft surf at the shore, a good size with some punch
- 4.3 ft swell at 8 s from the west-northwest, a bit short
- Light offshore wind (7 mph): it holds up and grooms the waves
- First or last light of the day
- Falling tide (low tide at 1:05 pm)
- Light: First light 7:26 am · sunrise 7:59 am · sunset 6:03 pm · last light 6:35 pm
- Tide: low 12:39 am (3.2 ft), high 6:35 am (22.1 ft), low 1:05 pm (3.3 ft) and high 7:01 pm (21.4 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 58.8 °F: a 4/3 fullsuit (booties if you run cold).
- Energy: 236 kJ · Medium power
Today’s surf at a glance
The best window, 7:26 am to 11:00 am, has a good size and light offshore wind. 6:00 pm to 6:35 pm also works, with a good size and glassy water.
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 Guissény today
Diving and snorkeling today
Likely visibility: poor- Some tidal current
- 3.7 ft swell at 8 s from the west: some surge on the bottom
- Light offshore wind (9 mph)
- 0.8 mph current toward the west (model)
- Sun high: more light underwater
- Slack water today: low tide 12:39 am (12:20–1:00 am), high tide 6:35 am (6:10–7:00 am), low tide 1:05 pm (12:40–1:20 pm) and high tide 7:01 pm (6:40–7:20 pm)
- Likely visibility: poor. Swell (up to 9.3 ft at 10 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 58.8 °F: a 7 mm wetsuit, with hood and booties.
- Snorkeling: better not, with these waves, wind or current.
- Night dive: dark from 6:35 pm. Waning gibbous (85%), rising at 8:00 pm: a bright night.
Your diving day at a glance
The best window, 1:30 pm to 2:30 pm, combines light wind and the sun high, though with tidal current, some swell and 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
- Bainbridge 2.9 mi
- T-27 2.9 mi
- Awelic 4.2 mi
- Hmcs Athabaskan 7.7 mi
- Goeland II 7.9 mi
- Therese et Marie 7.9 mi
- Lady Princess 9.4 mi
- Veroloch 10.0 mi
- Francois Joseph 11 mi
- Aber Wrac'h Plongée 7.4 mi
- Into The Blue Freediving 7.6 mi
- Korejou plongée 9.6 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 Guissény
Now in Guissény
- Low / high
- 45 / 58 °F
- Rain
- 0.00 in · 0%
- Clouds
- 100%
- Humidity
- 92%
- Dew pointDew point
- 44 °F
- Visibility
- 11 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 (−0.01 inHg in 3 hours). It barely changes over the next 48 hours. 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 | Fog | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast |
| Temperature | 48° | 46° | 45° | 46° | 55° | 58° | 55° | 50° |
| Wind (mph) | 5 SSE | 5 SSE | 6 SE | 7 SE | 9 SE | 9 SE | 4 E | 4 ESE |
| Gusts | 6 | 6 | 9 | 10 | 15 | 15 | 8 | 6 |
| Waves | 5.8 ft | 5.2 ft | 4.8 ft | 4.3 ft | 3.9 ft | 3.5 ft | 3.2 ft | 3.0 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 |
- 6:00 am 45° 6 SE 4.8 ft
- 9:00 am 46° 7 SE 4.3 ft
- 12:00 pm 55° 9 SE 3.9 ft
- 3:00 pm 58° 9 SE 3.5 ft
- 6:00 pm 55° 4 E 3.2 ft
- 9:00 pm 50° 4 ESE 3.0 ft
- 12:00 am 47° 4 ESE 2.8 ft
- 3:00 am 45° 5 ESE 2.8 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 45 / 58 °F | 9 mph SE | 5.8 ft | 6:35 am · 7:01 pm | |
| Fri 30 | 44 / 58 °F | 9 mph E | 4.1 ft | 7:19 am · 7:48 pm | |
| Sat 31 | 38 / 58 °F | 9 mph E | 4.5 ft | 8:09 am · 8:44 pm | |
| Sun 1 | 47 / 58 °F | 12 mph ENE | 4.3 ft | 9:10 am · 9:56 pm | |
| Mon 2 | 48 / 58 °F | 16 mph ENE | 4.1 ft | 10:28 am · 11:26 pm | |
| Tue 3 | 50 / 55 °F | 13 mph NE | 4.3 ft | 11:59 am | |
| Wed 4 | 44 / 55 °F | 13 mph ENE | 5.1 ft | 12:50 am · 1:15 pm | |
| Thu 5 | 39 / 51 °F | 9 mph ENE | 4.6 ft | 1:51 am · 2:12 pm | |
| Fri 6 | 41 / 56 °F | 8 mph E | 3.1 ft | 2:38 am · 2:58 pm | |
| Sat 7 | 45 / 58 °F | 11 mph SE | 4.3 ft | 3:19 am · 3:38 pm | |
| Sun 8 | 54 / 58 °F | 9 mph SSE | 2.4 ft | 3:57 am · 4:16 pm | |
| Mon 9 | 56 / 60 °F | 9 mph S | 2.6 ft | 4:34 am · 4:52 pm | |
| Tue 10 | 55 / 58 °F | 10 mph SSW | 2.6 ft | 5:09 am · 5:27 pm | |
| Wed 11 | 53 / 57 °F | 16 mph SW | 4.5 ft | 5:43 am · 6:00 pm |
- Fri 30 Fog 44° / 58° 4.1 ft
- Sat 31 Fog 38° / 58° 4.5 ft
- Sun 1 Overcast 47° / 58° 4.3 ft
- Mon 2 Overcast 48° / 58° 4.1 ft
- Tue 3 Light drizzle 50° / 55° 4.3 ft
- Wed 4 Mainly clear 44° / 55° 5.1 ft
- Thu 5 Clear sky 39° / 51° 4.6 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 (58 °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 4:50 am (local time).
The sun in Guissény
Sunrise and sunset
- First light 6:50 am
- Full dark 7:12 pm
- Civil dawn 7:26 am
- Civil dusk 6:35 pm
- Solar noon 1:01 pm (28° high)
- Daylight 10 h 4 min (−3 min)
- Evening golden hour 5:18 pm
- Full dark 7:12 pm
Golden hour and the day-night map
Today the sun is 92,335,254 mi away and looks 32′ 11″ across.
The moon in Guissény
Moon phase and position
Today the moon is 226,618 mi away and looks 32′ 45″ across.
Solunar periods
Today's activity: medium- 2:44–4:44 am Major · the moon passes overhead · high activity
- 3:16–5:16 pm Major · the moon passes underfoot · high activity
- 12:02–1:02 pm Minor · moonset · medium activity
- 7:30–8:30 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 · 9:29 pmNov 1 in 3 days
- New moon Mon, Nov 9 · 8:03 amNov 9 in 11 days
- First quarter Tue, Nov 17 · 12:48 pmNov 17 in 19 days
- Full moon Tue, Nov 24 · 3:54 pmNov 24 in 26 days
Next perigee (the moon at its closest to Earth): November 25, 223,281 mi away.
Where to fish in Guissény
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Jetty 9.1 mi
- Cale du Collège 0.3 mi
- Boat ramp 1.4 mi
- Boat ramp 1.5 mi
- Boat ramp 1.6 mi
- Cale du Curnic 1.8 mi
- Neiz Vran sud 1.8 mi
- Cale de Neiz Vran nord 1.8 mi
- Port du Correjou 4.5 mi
- Porsguen 5.9 mi
- Au fil de l'eau - Pêche et Coutellerie 5.7 mi
- Huîtres Legris 7.0 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
Gentle slopeThe bottom slopes gently: 16 ft deep 0.6 mi from shore and 33 ft at 0.7 mi. It reaches 164 ft at 3.1 mi.
From the shoreline (1.5 mi from Guissény) out to sea, heading north.
How far from shore
- 16 ft deep0.6 mi
- 33 ft deep0.7 mi
- 66 ft deep1.2 mi
- 164 ft deep3.1 mi
For fishing, swimming and diving
- Shore fishing. Shallow, gradual bottom (16 ft at 0.6 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 near shore: you only reach 33 ft at 0.7 mi. For dives deeper than 33 ft, go by boat.
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
Phare de Pontusval 4.2 mi northeast
- Light
- Light that goes dark 3 times every 12 s; white or red depending on where you see it from · Oc(3) WR 12s
- Range
- 10 nautical miles (12 mi)
- Light height
- 52 ft above sea level
- Tower height
- 48 ft
- Built
- 1869
Other lighthouses nearby: Phare de Lanvaon (6.0 mi west).
Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikipedia · Wikidata · Sources and licenses
Tides near GuissényTides nearby
- Kerlouan2.1 mi
- Brignogan-Plages4.3 mi
- Plounéour-Trez4.3 mi
- Plouguerneau4.8 mi
- Plouider5.3 mi
- Lannilis6.8 mi
- Landéda8.1 mi
- Saint-Pabu10.0 mi
- Plouescat11 mi
- Lampaul-Ploudalmézeau12 mi
Guissény at a glance
- Town or city of about 1,938 people. Coordinates: 48.634° N, 4.409° W.
- It is 17 mi north of Brest, the main place in Brittany. The sun rises at the same time and sets 1 min earlier than in Brest.
- The nearest tide station, Brest, is 18 mi to the south.
- Its coast faces north.
- Beaches and harbors nearby: Plage Boutrouilles (1.4 mi).
Questions about GuissényQuestions
What time is high tide today in Guissény?
Today in Guissény there are high tides at 6:35 am (22.1 ft) and 7:01 pm (21.4 ft) and low tides at 12:39 am and 1:05 pm. Tide coefficient 93.
What time is sunset today in Guissény?
At 6:03 pm. There is light until the end of civil twilight, at 6:35 pm.
What time is sunrise tomorrow in Guissény?
At 8:01 am. First light comes at 6:51 am.
What phase is the moon today?
Waning gibbous, 85% illuminated. New moon on Mon, Nov 9 · 8:03 am.
When are the next spring tides?
From November 9 to 11.
What are today's solunar periods?
Major 2:44–4:44 am, Minor 12:02–1:02 pm, Major 3:16–5:16 pm, Minor 7:30–8:30 pm. Today's activity is medium.
What's the weather like today in Guissény?
Fog, from 45 °F to 58 °F, with a light breeze from the southeast (7 mph) and a 0% chance of rain.
How is the sea today in Guissény?
Moderate (Douglas 4): 5.0 ft waves with a period of 10.4 s from the west-northwest. The water is 58.8 °F.
When is the best time to visit Guissény?
The best time to visit Guissény is from July to August: highs of 69 °F, about 7 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: Brest 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).