Vannes in Summer
In summer (June, July and August), Vannes sees average daytime highs around 22°C and overnight lows near 14°C, with 131 mm of rain over about 24 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 19°C in early June to 22°C by late August. The sky is clear or mostly clear about 26% of the time across summer, and the air most often feels comfortable.
Summer is Vannes's best season of the year to visit on our travel score. For the whole year in context, see Vannes's year-round climate.
- Avg daytime high
- 22°C
- warmest season of the year
- Avg overnight low
- 14°C
- Rainfall
- 131 mm
- 24 wet days
- Avg wind
- 14 km/h
- Travel score
- 6.8
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Vannes in Summer
Over the season highs climb from about 19°C in early June to 22°C by late August.
A typical summer day in Vannes reaches about 22°C and drops to 14°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Vannes
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Vannes weather by month
How the three summer months (June, July and August) 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° / 4° | 74 | 11.3 | 8.7 | 1.7 |
| Feb | 10° / 4° | 58 | 9.5 | 9.9 | 2.0 |
| Mar | 12° / 5° | 52 | 10.1 | 11.6 | 3.1 |
| Apr | 14° / 7° | 57 | 11 | 13.3 | 4.1 |
| May | 17° / 10° | 58 | 11.1 | 14.9 | 5.4 |
| Jun | 20° / 13° | 47 | 8.4 | 15.7 | 6.4 |
| Jul | 22° / 14° | 39 | 8 | 15.4 | 7.1 |
| Aug | 22° / 14° | 45 | 8 | 14.1 | 7.0 |
| Sep | 20° / 12° | 49 | 7.9 | 12.4 | 6.6 |
| Oct | 16° / 10° | 78 | 11.6 | 10.6 | 4.8 |
| Nov | 12° / 7° | 73 | 11.7 | 9.1 | 3.1 |
| Dec | 10° / 5° | 83 | 11.9 | 8.3 | 1.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 26% of the time across summer.
Chance of precipitation in Summer
Vannes gets around 131 mm of rain over 24 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 14 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 30 min in early June to 13 h 18 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.7 kWh/m².
Is summer a good time to visit Vannes?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Vannes for sightseeing.
What to pack for Vannes in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Vannes sees daytime highs around 22°C and nights near 14°C. Pack sun protection. Worth having: light clothes and rain gear. About 24 days see rain.
Sea temperature near Vannes in Summer
The nearest coast averages about 17°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 27 km away) is warmest in August at about 18°C and coldest in February near 10°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) | 10 | 10 | 10 | 12 | 14 | 16 | 18 | 18 | 17 | 16 | 14 | 12 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 10 | Bracing |
| Feb | 10 | Bracing |
| Mar | 10 | Bracing |
| Apr | 12 | Bracing |
| May | 14 | Bracing |
| Jun | 16 | Cool |
| Jul | 18 | Cool |
| Aug | 18 | Cool |
| Sep | 17 | Cool |
| Oct | 16 | Cool |
| Nov | 14 | Bracing |
| Dec | 12 | Bracing |
UV index in Vannes in Summer
Clear-sky midday UV across summer averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Vannes peaks around August 10 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 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 | 2 | 3 | 5 | 6 | 7 | 7 | 7 | 5 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | High | High | High | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | High |
| May | 6 | High |
| Jun | 7 | High |
| Jul | 7 | High |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Vannes?
Vannes sits at 47.7°N, 2.8°W, 20 m above sea level, in France. The nearest listed city is Guérande, 44 km away.
Topography around Vannes
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Vannes.
Within 3 km, the terrain around Vannes has only modest variations in elevation — a maximum elevation change of 64 m around an average of 20 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 177 m; within 80 km, significant variations in elevation — a maximum elevation change of 395 m.
The land around Vannes is covered by artificial surfaces (40%) and trees (36%) within 3 km, trees (33%), grassland (27%) and cropland (20%) within 16 km, and water (33%), trees (24%) and cropland (23%) 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 Vannes (47.6569°, -2.762°, elevation 20 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.