Climate averages 1991–2020

Pori weather
in January.

A freezing month with moderate precipitation: the 11th warmest and the 5th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high -1.5°C Daytime mean, January

Average low -5.3°C Night-time mean, January

Precipitation 43 mm 10 days with ≥1 mm

Daylight 6 h Sunrise to sunset, per day

January is a freezing month in Pori: daytime highs average -1.5°C and nights cool to about -5.3°C. By daytime temperature it is the 11th warmest of the 12 months.

Expect about 43 mm of precipitation on roughly 10 days, which makes January a month with moderate precipitation (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 6 h 23 min on an average January day.

The nearest other city in this atlas is Tampere (106 km away). In January its highs average -3.6°C, 2.1°C cooler than Pori, with 39 mm of precipitation.

Among the 13 cities listed in Finland, Pori ranks joint 1st of 13 for the warmest January highs and 8th of 13 for the driest January (precipitation, lowest first). The mean January high of those 13 cities is -3.5°C; Pori is 2.1°C warmer than that mean.

From January to February, average highs fall by 0.6°C to -2.1°C, and monthly precipitation falls from 43 mm to 34 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly precipitation

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Pori climate table

1991–2020

Monthly climate averages for Pori, 1991–2020
Month	Average highHigh / low	Average low	Precipitation mm/month	Wet days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	-1.5°C-5.3°C	-5.3°C	43	10.2	6.46 h
February	-2.1°C-6.5°C	-6.5°C	34	8.0	8.99 h
March	1.2°C-4.1°C	-4.1°C	33	8.3	11.712 h
April	7.0°C0.6°C	0.6°C	33	8.2	14.715 h
May	12.5°C5.6°C	5.6°C	39	7.8	17.517 h
June	16.8°C10.4°C	10.4°C	60	10.3	19.319 h
July	20.0°C14.0°C	14.0°C	74	11.7	18.518 h
August	19.0°C13.5°C	13.5°C	74	12.2	15.916 h
September	14.1°C9.4°C	9.4°C	62	10.2	13.013 h
October	7.7°C4.2°C	4.2°C	65	11.5	10.110 h
November	3.2°C0.4°C	0.4°C	56	11.1	7.37 h
December	0.4°C-2.9°C	-2.9°C	52	11.5	5.66 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from Pori

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Pori) is explained once on the Pori year overview and on the Sources, method and limits page.