How extreme does Santander's weather get?

The hottest, coldest, wettest and snowiest days Santander 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 (1973–present), from the Santander Cmt station 3 km away. Updated through May 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 Santander has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day

100°F Aug 23, 2023

That is about 26°F hotter than a normal August afternoon in Santander (typical high near 74°F).

The three most extreme on record

1 100°F Aug 23, 2023recent

2 98°F Sep 17, 1987

3 98°F Jun 23, 1994

❄️ Coldest night

22°F Mar 15, 1984

About 26°F colder than a normal March night in Santander (typical low near 48°F).

The three most extreme on record

1 22°F Mar 15, 1984

2 29°F Jan 7, 1985

3 29°F Jan 9, 1985

🌧️ Most rain in one day

10.16 in Jul 16, 1994

More rain in a single day than Santander usually gets in the whole month of July (typical July total about 2.0 in).

The three most extreme on record

1 10.16 in Jul 16, 1994

2 6.54 in Jun 19, 1987

3 5.31 in Apr 15, 1980

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.

normal range of daily temperatureshottest ever recordedcoldest ever recorded

Santander's record heat sits well above even a hot day for the season — August's 100°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, Santander's warmest days reach the mid-70s°F and its coldest nights drop to the mid-40s°F. But across the record it has gone as high as 100°F and as low as 22°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 Santander Cmt, 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 →

← Santander city detail