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Weather extremes

How extreme does Santiago de Compostela's weather get?

The hottest, coldest, wettest and snowiest days Santiago de Compostela 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 Santiago De Compostela/Labacol station 11 km away. Updated through February 2026 — 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 Santiago de Compostela has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
103°F Jul 20, 1990

That is about 27°F hotter than a normal July afternoon in Santiago de Compostela (typical high near 76°F).

The three most extreme on record

1 103°F Jul 20, 1990
2 102°F Aug 12, 2003
3 102°F Sep 6, 2016
❄️ Coldest night
19°F Jan 2, 1971

About 21°F colder than a normal January night in Santiago de Compostela (typical low near 40°F).

The three most extreme on record

1 19°F Jan 2, 1971
2 21°F Jan 14, 1987
3 22°F Jan 5, 1997
🌧️ Most rain in one day
8.58 in Oct 14, 1987

More rain in a single day than Santiago de Compostela usually gets in the whole month of October (typical October total about 8.1 in).

The three most extreme on record

1 8.58 in Oct 14, 1987
2 4.82 in Jul 24, 1971
3 4.69 in Sep 27, 1975

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°130° all-time high 103°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Santiago de Compostela's record heat sits well above even a hot day for the season — July's 103°F is about 27°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, Santiago de Compostela's warmest days reach the high 70s°F and its coldest nights drop to the high 30s°F. But across the record it has gone as high as 103°F and as low as 19°F. A single day has delivered over 9 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 A Coruna/alvedro, a weather station, about 49 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →