Lannion in Spring
In spring (March, April and May), Lannion sees average daytime highs around 12°C and overnight lows near 9°C, with 199 mm of rain over about 35 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 10°C in early March to 15°C by late May. The sky is clear or mostly clear about 22% of the time across spring, and the air most often feels dry.
Spring is Lannion's 3rd-best season to visit on our travel score. For the whole year in context, see Lannion's year-round climate.
- Avg daytime high
- 12°C
- 3rd-warmest season
- Avg overnight low
- 9°C
- Rainfall
- 199 mm
- 35 wet days
- Avg wind
- 21 km/h
- Travel score
- 2.9
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Lannion in Spring
Over the season highs climb from about 10°C in early March to 15°C by late May.
A typical spring day in Lannion reaches about 12°C and drops to 9°C overnight. The warmest of the three months is May, the coolest March.
Lannion weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 9° / 7° | 104 | 16.4 | 8.5 | 1.7 |
| Feb | 9° / 6° | 87 | 14.2 | 9.8 | 1.6 |
| Mar | 10° / 7° | 70 | 13.3 | 11.6 | 2.1 |
| Apr | 12° / 8° | 70 | 11.7 | 13.4 | 2.8 |
| May | 14° / 11° | 59 | 10.4 | 15 | 3.9 |
| Jun | 16° / 13° | 48 | 8.7 | 15.9 | 5.1 |
| Jul | 18° / 15° | 42 | 9 | 15.5 | 6.0 |
| Aug | 18° / 15° | 50 | 9.5 | 14.2 | 6.1 |
| Sep | 17° / 14° | 55 | 10 | 12.4 | 5.5 |
| Oct | 15° / 12° | 97 | 15 | 10.5 | 4.0 |
| Nov | 12° / 10° | 116 | 17.3 | 9 | 2.6 |
| Dec | 10° / 8° | 128 | 17.5 | 8.1 | 1.9 |
Cloud cover in Spring
The sky is clear or mostly clear about 22% of the time across spring.
Chance of precipitation in Spring
Lannion gets around 199 mm of rain over 35 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 21 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 10 h 42 min in early March to 15 h 36 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 4.5 kWh/m².
Is spring a good time to visit Lannion?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a weaker month for outdoor sightseeing in Lannion.
What to pack for Lannion in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Lannion sees daytime highs around 12°C and nights near 9°C. Pack a warm layer. Worth having: rain gear, sun protection and a windbreaker. About 35 days see rain.
Sea temperature near Lannion in Spring
The nearest coast averages about 11°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 17 km away) is warmest in August at about 17°C and coldest in March near 9°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 11 | 10 | 9 | 10 | 12 | 14 | 16 | 17 | 17 | 16 | 14 | 12 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 11 | Bracing |
| Feb | 10 | Bracing |
| Mar | 9 | Bracing |
| Apr | 10 | Bracing |
| May | 12 | Bracing |
| Jun | 14 | Bracing |
| Jul | 16 | Cool |
| Aug | 17 | Cool |
| Sep | 17 | Cool |
| Oct | 16 | Cool |
| Nov | 14 | Bracing |
| Dec | 12 | Bracing |
UV index in Lannion in Spring
Clear-sky midday UV across spring averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Lannion peaks around August 12 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 11 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 5 | 6 | 7 | 6 | 7 | 5 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 7 | High |
| Jul | 6 | High |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Lannion?
Lannion sits at 48.7°N, 3.5°W, 30 m above sea level, in France. The nearest listed city is Morlaix, 32 km away.
Topography around Lannion
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Lannion.
Within 3 km, the terrain around Lannion has only modest variations in elevation — a maximum elevation change of 108 m around an average of 63 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 186 m; within 80 km, significant variations in elevation — a maximum elevation change of 381 m.
The land around Lannion is covered by trees (41%) and grassland (23%) within 3 km, trees (27%), water (27%) and cropland (23%) within 16 km, and water (41%), cropland (22%) and trees (21%) within 80 km.
France travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 77% of US
- price level, 2025
- GDP per capita
- $48,986
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.3
- per 100k, 2023
- Road deaths
- 5.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 539
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Lannion (48.7326°, -3.4566°, elevation 30 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.