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Weather extremes

How extreme does Portishead's weather get?

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

Based on 34 years of daily weather observations (1991–present), from the Bristol station 12 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 Portishead has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
93°F Jul 18, 2022

That is about 25°F hotter than a normal July afternoon in Portishead (typical high near 68°F).

The three most extreme on record

1 93°F Jul 18, 2022recent
2 90°F Aug 2, 1995
3 90°F Jul 19, 2006
❄️ Coldest night
16°F Feb 7, 1991

About 20°F colder than a normal February night in Portishead (typical low near 36°F).

The three most extreme on record

1 16°F Feb 7, 1991
2 18°F Jan 9, 2009
3 18°F Dec 19, 2010
🌧️ Most rain in one day
10.08 in Sep 20, 1993

Top recorded days

1 10.08 in Sep 20, 1993
2 10.08 in Feb 6, 1994

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.

-10°10°30°50°70°90°110° all-time high 93°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Portishead's record heat sits well above even a hot day for the season — July's 93°F is about 25°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, Portishead's warmest days reach the high 60s°F and its coldest nights drop to the mid-30s°F. But across the record it has gone as high as 93°F and as low as 16°F. A single day has delivered over 10 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 30 years of daily observations at Yeovilton, a weather station, about 53 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →