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Weather extremes

How extreme does Brest's weather get?

The hottest, coldest, wettest and snowiest days Brest has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1971–present), from the Brest station 3 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Brest has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
98°F Aug 9, 2015

That is about 21°F hotter than a normal August afternoon in Brest (typical high near 77°F).

The three most extreme on record

1 98°F Aug 9, 2015
2 97°F Jul 29, 1994
3 97°F Jul 31, 1994
❄️ Coldest night
-20°F Jan 15, 1972

About 44°F colder than a normal January night in Brest (typical low near 24°F).

The three most extreme on record

1 -20°F Jan 15, 1972
2 -19°F Jan 8, 1987
3 -19°F Jan 14, 1987
🌧️ Most rain in one day
5.20 in Apr 13, 2011

More rain in a single day than Brest usually gets in the whole month of April (typical April total about 1.6 in).

The three most extreme on record

1 5.20 in Apr 13, 2011
2 3.90 in Jul 15, 2019
3 3.38 in Jul 19, 1974

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

-30°-10°10°30°50°70°90°110° all-time high 98°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Brest's record heat sits well above even a hot day for the season — August's 98°F is about 21°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Brest's warmest days reach the high 70s°F and its coldest nights drop to the mid-20s°F. But across the record it has gone as high as 98°F and as low as −20°F. A single day has delivered over 5 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 22 years of daily observations at Brest, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →