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Monthly climate in Pori, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Pori features a humid continental climate (Dfb). Temperatures typically range between -3 °C (26 °F) and 17 °C (63 °F) through the year, but rarely can drop to -22 °C (-7 °F) or can rise to as high as 29 °C (84 °F). The average annual precipitation amounts to about 733 mm (28.9 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually. Pori enjoys an average of 3381 hours of sunshine throughout the year, and daylight varies from 5 hours 27 minutes to 19 hours 20 minutes per day.

Monthly average temperatures in Pori, Finland

The warmest months in Pori are June, July and August, with daily mean temperatures ranging from 15 to 17 °C (59 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -3 to -1 °C (26 - 31 °F) throughout the day. On average each year, Pori experiences 5 days above 25 °C (77.0 °F) and 104 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Pori. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum7°C
(45°F)		7°C
(44°F)		9°C
(49°F)		19°C
(67°F)		23°C
(73°F)		27°C
(81°F)		29°C
(84°F)		28°C
(82°F)		23°C
(74°F)		16°C
(62°F)		12°C
(55°F)		6°C
(43°F)
Mean maximum5°C
(41°F)		4°C
(40°F)		8°C
(46°F)		14°C
(57°F)		20°C
(68°F)		23°C
(73°F)		26°C
(80°F)		24°C
(75°F)		20°C
(68°F)		14°C
(58°F)		10°C
(50°F)		5°C
(42°F)
Average high-0°C
(32°F)		-1°C
(30°F)		2°C
(36°F)		7°C
(44°F)		12°C
(54°F)		18°C
(65°F)		20°C
(69°F)		19°C
(66°F)		15°C
(58°F)		9°C
(48°F)		5°C
(41°F)		1°C
(34°F)
Daily mean-2°C
(29°F)		-3°C
(26°F)		-1°C
(31°F)		4°C
(39°F)		9°C
(48°F)		15°C
(59°F)		17°C
(63°F)		16°C
(61°F)		12°C
(54°F)		7°C
(45°F)		3°C
(39°F)		-0°C
(32°F)
Average low-4°C
(26°F)		-6°C
(22°F)		-3°C
(26°F)		0°C
(33°F)		5°C
(41°F)		11°C
(53°F)		14°C
(57°F)		13°C
(56°F)		10°C
(49°F)		5°C
(42°F)		2°C
(36°F)		-2°C
(29°F)
Mean minimum-14°C
(7°F)		-16°C
(4°F)		-13°C
(9°F)		-6°C
(22°F)		-1°C
(31°F)		7°C
(45°F)		10°C
(49°F)		8°C
(47°F)		4°C
(39°F)		-2°C
(28°F)		-4°C
(24°F)		-8°C
(18°F)
Minimum-21°C
(-5°F)		-19°C
(-1°F)		-22°C
(-7°F)		-9°C
(17°F)		-2°C
(28°F)		4°C
(40°F)		9°C
(48°F)		6°C
(44°F)		1°C
(35°F)		-4°C
(25°F)		-8°C
(17°F)		-17°C
(2°F)

Compare climate in Pori with other places

Compare temperature, precipitation, sunshine, UV index in Pori, Finland with other places around the world.

Monthly average precipitation in Pori, Finland

Pori usually has the most precipitation in July, August and October, with an average of 13 rainy days and 88 mm (3.5 inches) of precipitation per month. The driest months in Pori are February, April and May. On average, 41 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Pori. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)43 (1.7)42 (1.6)43 (1.7)40 (1.6)41 (1.6)50 (2.0)83 (3.2)93 (3.7)77 (3.0)88 (3.4)65 (2.6)69 (2.7)
Average precipitation days (≥ 1 mm)10810888111412161214

Monthly sunshine hours in Pori, Finland

The sunniest months in Pori are May, June and July, when the sun shines an average of 15 hours 45 minutes a day. Least sunny months in Pori: January, November and December receive an average of 2 hours 24 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Pori. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours5415926735845649949442430019810758
Mean daily daylight hours6h 22m8h 56m11h 50m14h 48m17h 37m19h 20m18h 24m15h 45m12h 50m9h 55m7h 7m5h 27m

Solar UV radiation in Pori, Finland

Pori experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 5 - 6, which corresponds to the Moderate / High category of sun exposure. January, February and November are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Pori UV Index data.

Average daily maximum UV levels by month for Pori. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)113456653211