Terrassa weather in January

Name: Terrassa
Address: ES

In January, Terrassa has daytime highs averaging 11 °C, nights around 2.3 °C, with 5.7 wet days. Figures are 1991–2020 climate normals.

11.2°C Average high
2.3°C Average low
5.7days Wet days
39mm Rainfall
9.5h Daylight

Daily temperatures through January

Daily highDaily low Day of month on the horizontal axis. Highs peak at 12.0 °C and lows bottom out at 1.6 °C.

How January develops

Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.

Days	Avg high	Avg low	Chance of rain
1–10 January	11.2 °C	2.2 °C	16 %
11–20 January	11.1 °C	2.2 °C	16 %
21–31 January	11.3 °C	2.4 °C	23 %

Rain is most likely over days 21–31 of January (23 % of days) and least likely over days 11–20 (16 %).

Chance of a wet day (over 1 mm) by date in January. Wettest date over the 30 years: January 28, at 43 %. Single dates are noisy — read the shape, not the spikes.

What to expect

Measure	Typical January	Share of the month
Days above 25 °C	0 of 31	0 %
Days above 30 °C	0 of 31	0 %
Days below 0 °C	5.8 of 31	19 %
Days with more than 1 mm rain	5.7 of 31	18 %

Conditions in January

Measure	Average
Mean temperature	6.2 °C
Record high (1991–2020)	19 °C
Record low (1991–2020)	-5.2 °C
Relative humidity	81 %
Wind speed	14 km/h
Cloud cover	49 %

Where Terrassa ranks in January

Ranking	Position	Value
Places with the best weather in Europe in January	39thof 50	54/100
The warmest places in Europe in January	48thof 50	11 °C

January compared with the months around it

Month	Avg high	Rainfall	Cloud
January	11.2 °C	39 mm	49 %
February	12.4 °C	33 mm	48 %
March	15.4 °C	44 mm	50 %
November	14.8 °C	59 mm	52 %
December	11.7 °C	40 mm	50 %

See all twelve months for Terrassa

January is the 12th warmest month here.
It is the 3rd driest month of the year.
It ranks 5th for least cloud cover.
Days last about 9.5 hours from sunrise to sunset.
It rains on 5.7 of 31 days — 18 % of the month.
Nights are about 8.9 °C cooler than the middle of the day.
The hottest January day on record since 1991 reached 19 °C, 8.0 °C above the usual daytime high.

Nearby destinations in January

Destination	Avg high	Wet days	Sea
Terrassa	11 °C	5.7	–
Sabadell	12 °C	6	14
Barcelona	13 °C	6	14
Badalona	13 °C	6	14
L'Hospitalet de Llobregat	13 °C	6	14

QuestionsJanuary in Terrassa, answered

How warm is Terrassa in January?

Daily highs average 11 °C and nights fall to about 2.3 °C, a spread of 8.9 °C between afternoon and dawn. That makes January the 12th warmest month of the year here.

Does it rain much in Terrassa in January?

January averages 39 mm of rain, spread over about 6 of the 31 days — 18 % of the month. Cloud cover averages 49 % of the sky.

How long are the days in January?

Terrassa averages 9.5 hours between sunrise and sunset in January. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.