Climate averages 1991–2020
Brest, France weather
in May.
A mild, moderately wet month: the 6th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Brest, France: daytime highs average 15.0°C and nights cool to about 10.6°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 59 mm of rain on roughly 11 days, which makes May a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 11 min on an average May day.
The nearest other city in this atlas is Saint Helier (196 km away). In May its highs average 13.7°C, 1.3°C cooler than Brest, France, with 53 mm of rain.
Among the 57 cities listed in France, Brest, France ranks 57th of 57 for the warmest May highs and joint 14th of 57 for the driest May (rainfall, lowest first). The mean May high of those 57 cities is 18.9°C; Brest, France is 3.9°C cooler than that mean.
From May to June, average highs rise by 2.3°C to 17.3°C, and monthly rainfall falls from 59 mm to 47 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Brest, France climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.7°C6.7°C | 6.7°C | 99 | 15.3 | 8.89 h |
| February | 9.6°C6.2°C | 6.2°C | 80 | 13.4 | 10.210 h |
| March | 10.9°C7.1°C | 7.1°C | 64 | 12.6 | 11.912 h |
| April | 12.5°C8.2°C | 8.2°C | 66 | 11.9 | 13.614 h |
| May, selected | 15.0°C10.6°C | 10.6°C | 59 | 10.5 | 15.215 h |
| June | 17.3°C12.9°C | 12.9°C | 47 | 9.7 | 16.016 h |
| July | 18.9°C14.6°C | 14.6°C | 45 | 10.1 | 15.716 h |
| August | 19.1°C14.9°C | 14.9°C | 53 | 10.0 | 14.314 h |
| September | 17.8°C13.6°C | 13.6°C | 52 | 9.6 | 12.613 h |
| October | 15.2°C11.8°C | 11.8°C | 92 | 14.1 | 10.911 h |
| November | 12.3°C9.5°C | 9.5°C | 96 | 14.9 | 9.39 h |
| December | 10.4°C7.4°C | 7.4°C | 105 | 15.3 | 8.48 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Saint Helier in MayJersey · 196 kmHigh 13.7°C · Low 11.0°C · 53 mm rain
- Rennes in MayFrance · 210 kmHigh 18.1°C · Low 9.5°C · 63 mm rain
- Plymouth in MayUnited Kingdom · 222 kmHigh 15.0°C · Low 9.2°C · 61 mm rain
- Nantes in MayFrance · 255 kmHigh 18.4°C · Low 10.3°C · 61 mm rain
- Exeter in MayUnited Kingdom · 269 kmHigh 15.4°C · Low 8.4°C · 65 mm rain
- Angers in MayFrance · 310 kmHigh 18.7°C · Low 10.0°C · 62 mm rain
- Caen in MayFrance · 315 kmHigh 17.3°C · Low 9.4°C · 58 mm rain
- Poole in MayUnited Kingdom · 315 kmHigh 15.4°C · Low 9.5°C · 51 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Brest) is explained once on the Brest, France year overview and on the Sources, method and limits page.