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Weather extremes

How extreme does Canvey Island's weather get?

The hottest, coldest, wettest and snowiest days Canvey Island 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 Southend station 10 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 Canvey Island has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
99°F Jul 19, 2022

That is about 26°F hotter than a normal July afternoon in Canvey Island (typical high near 72°F).

The three most extreme on record

1 99°F Jul 19, 2022recent
2 97°F Aug 10, 2003
3 95°F Jul 25, 2019
❄️ Coldest night
14°F Dec 20, 2010

About 24°F colder than a normal December night in Canvey Island (typical low near 38°F).

The three most extreme on record

1 14°F Dec 20, 2010
2 16°F Feb 11, 2012
3 16°F Feb 28, 2018

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 99°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Canvey Island's record heat sits well above even a hot day for the season — July's 99°F is about 26°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, Canvey Island's warmest days reach the low 70s°F and its coldest nights drop to the high 30s°F. But across the record it has gone as high as 99°F and as low as 14°F. 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 Heathrow, a weather station, about 10 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →