AI-generatedLannion at a glance
- Best time
- Jul – Aug
- Warmest month
- Aug · 22°
- Warmest sea
- Sep · 17.1°
- Sunshine a year
- 1,700 h
- Rain a year
- 933 mm
- Climate
- Maritime
- Time zone
- UTC+1 / UTC+2
- Elevation
- 30 m
Climate in Lannion
Lannion has a maritime climate with moderate summers and cool, often grey winters. August is the warmest month with average highs of 22 °C, while January is the coolest at 10 °C. With around 1,700 hours of sunshine a year, Lannion is moderately sunny; June is the sunniest month with 6.9 hours a day.
Holiday weather through the year
Best time to visit Lannion
The best time to visit Lannion is from July to August. The sea stays too cool for a classic beach holiday: even in September it only reaches 17.1 °C. For sightseeing, day trips and hiking, conditions are most comfortable from May to September. Rain is frequent from October to March; the wettest month is December with 128 mm.
Lannion through the seasons
How the weather changes over the seasons, with averages for each.
Lannion in spring
Mar – May
Poor
- 12–17 °C by day
- Sea 11 °C
- 5.5 h of sun a day
- 35 rainy days in all
Lannion in summer
Jun – Aug
Poor
- 19–22 °C by day
- Sea 16 °C
- 6.7 h of sun a day
- 28 rainy days in all
Lannion in autumn
Sep – Nov
Poor
- 13–20 °C by day
- Sea 16 °C
- 4.0 h of sun a day
- 43 rainy days in all
Lannion in winter
Dec – Feb
Poor
- 10–11 °C by day
- Sea 11 °C
- 2.4 h of sun a day
- 50 rainy days in all
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May – Sep
15–28 °C and not too much rain
Rainy months
Oct – Mar
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Lannion for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: July – August
Where to go in OctoberSea temperature in October
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 11°
- Midday, 13:00: about 16°
- Afternoon, 16:00: about 17°
- Evening, 20:00: about 15°
- Night, 23:00: about 13°
08:3219:27
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 08:13–09:15 · evening 18:44–19:46
- Blue hour
- Morning 08:00–08:13 · evening 19:46–19:58
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Lannion compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 18° at the start of the month to 15° at the end. The sea cools from 16° to 15°. The days get 1.7 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 18° | 15° |
| Night-time low | 11° | 9° |
| Sea | 16° | 15° |
| Daylight | 11.7 h | 10.0 h |
What is the weather like in Lannion in October?
In October, Lannion is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sea averages 15.9 °C – swimming is only for the hardy. The sun is scarce, with only about 3.7 hours a day. It rains often – on about 15 days, adding up to 97 mm. It is often windy: on a typical day the wind peaks at around 30 km/h. All in all, October is not an ideal month for a holiday in Lannion.
More details for October
- Daylight
- 10 h 55 min08:32 – 19:27
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 30 km/haverage daily peakAll months
- Cloud cover
- 69 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+2offset from UTC
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %12 %
- Few rainy daysweight 20 %21 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
- Windproof jacket
Compare two months in Lannion
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Lannion: score 38 against 6. In July, days are 4 °C warmer than in October. The sea is about as warm in both months. July has 6 fewer rainy days. The sun shines 3 hours longer a day in July.
| Month | October | July |
|---|---|---|
| Holiday weather score | 6 | 38better |
| Daytime high | 17° | 21° |
| Night-time low | 10° | 14° |
| Sea | 15.9° | 15.8° |
| Sunshine | 3.7 h | 6.8 hbetter |
| Rainy days | 15 | 9better |
| Rainfall | 97 mm | 43 mmbetter |
Based on the climate averages 1996–2025.
Lannion month by month
The typical weather for every month at a glance.
1January10° · Sea 11° · 2.1 h
In January, Lannion is cool: daytime highs average 10 °C, and nights cool down to about 5 °C. The sea averages 10.7 °C – swimming is only for the hardy. The sun is scarce, with only about 2.1 hours a day. It rains often – on about 17 days, adding up to 106 mm. It is often windy: on a typical day the wind peaks at around 35 km/h. All in all, January is not an ideal month for a holiday in Lannion.
Lannion in January5February11° · Sea 10° · 3.0 h
In February, Lannion is cool: daytime highs average 11 °C, and nights cool down to about 5 °C. The sea averages 9.8 °C – swimming is only for the hardy. The sun is scarce, with only about 3.0 hours a day. It rains often – on about 14 days, adding up to 87 mm. It is often windy: on a typical day the wind peaks at around 34 km/h. All in all, February is not an ideal month for a holiday in Lannion.
Lannion in February10March12° · Sea 10° · 4.0 h
In March, Lannion is cool: daytime highs average 12 °C, and nights cool down to about 6 °C. The sea averages 9.6 °C – swimming is only for the hardy. Expect around 4.0 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 70 mm in total. It is often windy: on a typical day the wind peaks at around 30 km/h. All in all, March is not an ideal month for a holiday in Lannion.
Lannion in March19April14° · Sea 11° · 5.9 h
In April, Lannion is cool: daytime highs average 14 °C, and nights cool down to about 7 °C. The sea averages 10.5 °C – swimming is only for the hardy. Expect around 5.9 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 67 mm in total. All in all, April is not an ideal month for a holiday in Lannion.
Lannion in April23May17° · Sea 12° · 6.6 h
In May, Lannion is mild: daytime highs average 17 °C, and nights cool down to about 9 °C. The sea averages 12.0 °C – swimming is only for the hardy. The sun shines for around 6.6 hours a day. Rain is frequent, with about 11 rainy days and 56 mm in total. All in all, May is not an ideal month for a holiday in Lannion.
Lannion in May28June19° · Sea 14° · 6.9 h
In June, Lannion is mild: daytime highs average 19 °C, and nights cool down to about 12 °C. The sea averages 14.1 °C – swimming is only for the hardy. The sun shines for around 6.9 hours a day. Rain is frequent, with about 9 rainy days and 52 mm in total. All in all, June is not an ideal month for a holiday in Lannion.
Lannion in June38July21° · Sea 16° · 6.8 h
In July, Lannion is warm: daytime highs average 21 °C, and nights cool down to about 14 °C. The sea averages 15.8 °C – swimming is only for the hardy. The sun shines for around 6.8 hours a day. Rain is frequent, with about 9 rainy days and 43 mm in total. All in all, July is not an ideal month for a holiday in Lannion – and yet one of the best months here.
Lannion in July38August22° · Sea 17° · 6.4 h
In August, Lannion is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. The sea averages 17.0 °C – bracing, so a wetsuit helps for longer swims. Expect around 6.4 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 51 mm in total. All in all, August is not an ideal month for a holiday in Lannion – and yet one of the best months here.
Lannion in August27September20° · Sea 17° · 5.7 h
In September, Lannion is mild: daytime highs average 20 °C, and nights cool down to about 12 °C. The sea averages 17.1 °C – bracing, so a wetsuit helps for longer swims. Expect around 5.7 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 53 mm in total. All in all, September is not an ideal month for a holiday in Lannion.
Lannion in September6October17° · Sea 16° · 3.7 h
In October, Lannion is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sea averages 15.9 °C – swimming is only for the hardy. The sun is scarce, with only about 3.7 hours a day. It rains often – on about 15 days, adding up to 97 mm. It is often windy: on a typical day the wind peaks at around 30 km/h. All in all, October is not an ideal month for a holiday in Lannion.
Lannion in October0November13° · Sea 14° · 2.6 h
In November, Lannion is cool: daytime highs average 13 °C, and nights cool down to about 7 °C. The sea averages 14.0 °C – swimming is only for the hardy. The sun is scarce, with only about 2.6 hours a day. It rains often – on about 18 days, adding up to 123 mm. It is often windy: on a typical day the wind peaks at around 33 km/h. All in all, November is not an ideal month for a holiday in Lannion.
Lannion in November0December11° · Sea 12° · 2.1 h
In December, Lannion is cool: daytime highs average 11 °C, and nights cool down to about 6 °C. The sea averages 12.2 °C – swimming is only for the hardy. The sun is scarce, with only about 2.1 hours a day. It rains often – on about 18 days, adding up to 128 mm. It is often windy: on a typical day the wind peaks at around 35 km/h. All in all, December is not an ideal month for a holiday in Lannion.
Lannion in DecemberClimate in detail
Year & climate tableWarmest in August: 22°
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Lannion
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
CoolOctober: nights around 10°. A duvet at night and a jumper for the evening.
The coolest nights are in February (5°), the warmest in August (14°). Nights fall below 8 °C on average from November to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 1 | 10° | 5° | 10.7° | 2.1 h | 17 | 106 |
| FebruaryFeb | 5 | 11° | 5° | 9.8° | 3.0 h | 14 | 87 |
| MarchMar | 10 | 12° | 6° | 9.6° | 4.0 h | 13 | 70 |
| AprilApr | 19 | 14° | 7° | 10.5° | 5.9 h | 11 | 67 |
| MayMay | 23 | 17° | 9° | 12.0° | 6.6 h | 11 | 56 |
| JuneJun | 28 | 19° | 12° | 14.1° | 6.9 h | 9 | 52 |
| JulyJul | 38 | 21° | 14° | 15.8° | 6.8 h | 9 | 43 |
| AugustAug | 38 | 22° | 14° | 17.0° | 6.4 h | 10 | 51 |
| SeptemberSep | 27 | 20° | 12° | 17.1° | 5.7 h | 10 | 53 |
| OctoberOct | 6 | 17° | 10° | 15.9° | 3.7 h | 15 | 97 |
| NovemberNov | 0 | 13° | 7° | 14.0° | 2.6 h | 18 | 123 |
| DecemberDec | 0 | 11° | 6° | 12.2° | 2.1 h | 18 | 128 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
48.73° N, 3.46° W · 30 m · Europe/Paris
Sea temperatureUp to 17° in September
Sea temperature in Lannion
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 15.4 – 16.4 °C
Swimming season: Always below 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Lannion ranges from 9.6 °C in March to 17.1 °C in September. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
The sea warms up slowly: it is warmest in September, while the air already peaks in August. From November to January the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in September, eight out of ten years were between 16.7 and 17.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 10.7° | 9.8° | 11.4° | cold |
| FebruaryFeb | 9.8° | 9.0° | 10.5° | cold |
| MarchMar | 9.6° | 8.8° | 10.3° | cold |
| AprilApr | 10.5° | 9.6° | 11.2° | cold |
| MayMay | 12.0° | 11.1° | 12.8° | cold |
| JuneJun | 14.1° | 13.6° | 14.8° | cold |
| JulyJul | 15.8° | 15.1° | 16.5° | cold |
| AugustAug | 17.0° | 16.5° | 17.7° | fresh |
| SeptemberSep | 17.1° | 16.7° | 17.7° | fresh |
| OctoberOct | 15.9° | 15.4° | 16.4° | cold |
| NovemberNov | 14.0° | 13.5° | 14.6° | cold |
| DecemberDec | 12.2° | 11.3° | 12.7° | cold |
Sunshine1,700 hours a year
Sunshine hours in Lannion
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.7 of 10.9 hours of daylight in Lannion, 34 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain933 mm a year, most in December
Rain in Lannion: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Lannion has about 15 rainy days with 97 mm of rain in total.
UV indexUp to 8 in June
UV index in Lannion
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 8).
Minutes until sunburn in October
- Very fair skin
- about 55 min
- Fair skin
- about 70 min
- Light brown skin
- about 100 min
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind & cloudsWindiest in December: 35 km/h
Wind and clouds in Lannion
How breezy and how cloudy Lannion is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Lannion typically peaks at 30 km/h during the day: Beaufort 5, fresh breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting, and here it is that strong all year.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 69 % of the sky over Lannion: mostly cloudy, with about 3.7 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Planning a trip to Lannion
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Lannion in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Lannion has its best school-holiday weather during the summer holidays (score 38) and its weakest during the Christmas holidays (score 1).
- 16
Easter holidays
Mar – Apr
Poor
- 14 °C by day
- Sea 10 °C
- 5.3 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
- 24
May half-term
May – Jun
Poor
- 17 °C by day
- Sea 12 °C
- 6.7 h of sun a day
- 10 rainy days a month
Good for: Sightseeing & walks
- 38
Summer holidays
Jul – Aug
PoorBest holidays
- 21 °C by day
- Sea 17 °C
- 6.5 h of sun a day
- 9 rainy days a month
Good for: Sightseeing & walks
- 6
October half-term
Oct
Poor
- 17 °C by day
- Sea 16 °C
- 3.7 h of sun a day
- 15 rainy days a month
Keep in mind: Frequent rain
- 1
Christmas holidays
Dec – Jan
Poor
- 10 °C by day
- Sea 11 °C
- 2.1 h of sun a day
- 18 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- Short trip – train or car is often quicker
- Distance
- 370 km
- Time zone
- UTC+2
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Good to know: France
- Currency
- Euro (EUR)
- Language
- French
- Sockets
- Type C, E · 230 V
- Traffic
- Drives on the right
- Dialling code
- +33
- Emergency number
- 112
UK plugs need a travel adapter
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Lannion compared
Put Lannion side by side with another destination.
Lannion vs Paimpol
In October the holiday weather in Lannion and Paimpol is about equally good (score 6 vs 8). During the day it is about as warm in Paimpol as in Lannion. The sea is about equally warm.
| in October | Lannion | Paimpol |
|---|---|---|
| Holiday weather score | 6 | 8 |
| Daytime high | 17° | 17° |
| Sea | 16° | 16° |
| Sunshine | 4 h | 4 h |
| Rainy days | 15 | 14 |
| Best time | Jul – Aug | Jul – Aug |
Through the year
Best places in the country
France in October: the best places
In October, Lannion ranks 28 among the 31 nearest destinations in this country.
- Angers18°67
- 2Nantes18°65
- 3Rennes17°63
- 4Dinan17°62
- 5Bayeux17°61
- 6Laval17°61
- 7Falaise16°58
- 8Caen17°57
- 28LannionThis page17°16°6
Places nearby4 places within 56 km
Near Lannion
Other destinations close by.
Places with a similar climatee.g. Looe and Penzance
Places with a climate like Lannion
Destinations whose weather through the year is closest to Lannion's – good alternatives.
Frequently asked questions about Lannion
When is the best time to visit Lannion?
The best time to visit Lannion is from July to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Lannion?
The sea temperature in Lannion ranges from 9.6 °C in March to 17.1 °C in September. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Lannion in October?
Only if you don't mind cold water: in October the sea averages just 15.9 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Lannion?
August is the warmest month, with average highs of 22 °C and nights around 14 °C. January is the coolest month at 10 °C.
When does it rain most in Lannion?
Rain is frequent from October to March; the wettest month is December with 128 mm. The driest month is July with 43 mm.
How many hours of sunshine does Lannion get?
Lannion gets around 1,700 hours of sunshine a year. The sunniest month is June with 6.9 hours a day; in January there are 2.1 hours a day.
What time zone is Lannion in?
Lannion is on UTC+1 in January and UTC+2 in July.
Which school holidays are best for Lannion?
Lannion has its best school-holiday weather during the summer holidays (score 38) and its weakest during the Christmas holidays (score 1). Holiday ratings (0–100): Easter holidays 16, May half-term 24, summer holidays 38, October half-term 6, Christmas holidays 1.