Brest, Brittany Weather by Month and Climate Averages

How much rain does Brest get?

Brest gets 1128 mm of precipitation in an average year, spread over about 224 days with measurable rain. That is more rainy days than 98% of France.

December is the wettest month, with 141 mm. June is the driest, with 60 mm. November has the most rainy days, about 21.

The longest dry spell in the last five years lasted 11 days, to March 28, 2022.

Brest weather by month

Brest weather in January

In January, Brest averages a high of 9°C and a low of 4°C. It gets 129 mm of precipitation over about 20 rainy days. Estimated sunshine is 25% of daylight hours, derived from ERA5 cloud cover. The January record high is 20°C (1978) and the record low is -9°C (1987).

Brest weather in February

In February, Brest averages a high of 10°C and a low of 3°C. It gets 109 mm of precipitation over about 18 rainy days. Estimated sunshine is 26% of daylight hours, derived from ERA5 cloud cover. The February record high is 20°C (1978) and the record low is -6°C (1991).

Brest weather in March

In March, Brest averages a high of 12°C and a low of 4°C. It gets 76 mm of precipitation over about 17 rainy days. Estimated sunshine is 32% of daylight hours, derived from ERA5 cloud cover. The March record high is 24°C (2005) and the record low is -5°C (2005).

Brest weather in April

In April, Brest averages a high of 14°C and a low of 6°C. It gets 80 mm of precipitation over about 16 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The April record high is 28°C (2015) and the record low is -2°C (2022).

Brest weather in May

In May, Brest averages a high of 17°C and a low of 8°C. It gets 74 mm of precipitation over about 16 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The May record high is 29°C (2017) and the record low is 0°C (2021). May is one of the most comfortable months to visit.

Brest weather in June

In June, Brest averages a high of 19°C and a low of 11°C. It gets 60 mm of precipitation over about 17 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The June record high is 34°C (2019) and the record low is 1°C (1985). June is one of the most comfortable months to visit.

Brest weather in July

In July, Brest averages a high of 21°C and a low of 13°C. It gets 67 mm of precipitation over about 19 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The July record high is 36°C (2022) and the record low is 6°C (2020). July is one of the most comfortable months to visit.

Brest weather in August

In August, Brest averages a high of 21°C and a low of 13°C. It gets 73 mm of precipitation over about 20 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The August record high is 36°C (2022) and the record low is -2°C (2019). August is one of the most comfortable months to visit.

Brest weather in September

In September, Brest averages a high of 19°C and a low of 11°C. It gets 66 mm of precipitation over about 19 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The September record high is 32°C (2020) and the record low is 0°C (1978). September is one of the most comfortable months to visit.

Brest weather in October

In October, Brest averages a high of 16°C and a low of 9°C. It gets 118 mm of precipitation over about 20 rainy days. Estimated sunshine is 31% of daylight hours, derived from ERA5 cloud cover. The October record high is 28°C (2011) and the record low is -2°C (2003).

Brest weather in November

In November, Brest averages a high of 13°C and a low of 7°C. It gets 135 mm of precipitation over about 21 rainy days. Estimated sunshine is 28% of daylight hours, derived from ERA5 cloud cover. The November record high is 21°C (2015) and the record low is -4°C (1977).

Brest weather in December

In December, Brest averages a high of 11°C and a low of 4°C. It gets 141 mm of precipitation over about 21 rainy days. Estimated sunshine is 25% of daylight hours, derived from ERA5 cloud cover. The December record high is 20°C (1977) and the record low is -6°C (1991).

Sunshine, humidity and wind in Brest

May is the sunniest month in Brest, with estimated sunshine of 40% of daylight hours from ERA5 cloud cover. January is the cloudiest, at 25%. The annual cloud-cover estimate is 33% of daylight hours; it is not a measurement of sunshine duration. Brest is cloudier than 84% of France.

Humidity peaks in October at 85% and is lowest in April at 76%.

Brest has about 2 days a year above 32°C. Brest is cooler than 99% of France.

First and last freeze in Brest

The first fall freeze in Brest typically comes around December 2, and the last spring freeze around March 14. That leaves a frost-free growing season of about 263 days.

Brest weather records

These records cover GUIPAVAS during 1973–2025. Earlier records or other stations in the city may differ.

The hottest temperature on record at the Brest station is 36°C, on August 13, 2022. The coldest is -9°C, on January 13, 1987.

The wettest day in the available station history brought 133 mm of precipitation, on March 24, 1986.

28 all-time records have been set at the station since 1973.

The best time to visit Brest

The most comfortable time to visit is typically May to September, when daytime highs sit near 20°C.

Winter (December–February) is chilly, with average highs around 10°C and lows near 4°C.

Spring (March–May) is mild, with average highs around 14°C and lows near 6°C.

Summer (June–August) is warm, with average highs around 20°C and lows near 12°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 16°C and lows near 9°C.

Brest climate questions

How much rain does Brest get?

Brest gets 1128 mm of precipitation in an average year, over about 224 rainy days.

What is the wettest month in Brest?

December is the wettest month in Brest, with 141 mm. June is the driest, with 60 mm.

How many rainy days does Brest have a year?

Brest has about 224 days with measurable rain in an average year. November has the most, about 21.

What is the hottest month in Brest?

July is the warmest month in Brest, with an average high of 21°C.

What is the coldest month in Brest?

February is the coldest month in Brest, with an average low of 3°C.

What is the record high temperature in Brest?

Within the available 1973–2025 station history, the record high at the Brest station is 36°C, set on August 13, 2022. The record low is -9°C, on January 13, 1987.

What is the sunniest month in Brest?

May is the sunniest month in Brest, with estimated sunshine of 40% of daylight hours from ERA5 cloud cover. January is the cloudiest.

When is the first frost in Brest?

The first fall freeze in Brest typically comes around December 2. The last spring freeze is around March 14.

What is the best time to visit Brest?

The most comfortable time to visit is typically May to September, when daytime highs sit near 20°C.