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Monthly climate in Hanko, Uusimaa, Finland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Hanko features a humid continental climate (Dfb).Temperatures typically range between -1 °C (31 °F) and 17 °C (63 °F) through the year, but rarely can drop to -13 °C (8 °F) or can rise to as high as 25 °C (76 °F).The average annual precipitation amounts to about 762 mm (30.0 inches) and receives 145 rainy days on the 1 mm (0.04 inches) threshold annually.Hanko enjoys an average of 3488 hours of sunshine throughout the year, and daylight varies from 6 hours 3 minutes to 18 hours 38 minutes per day.

Monthly average temperatures in Hanko, Uusimaa, Finland §

The warmest months in Hanko are July, August and September, with daily mean temperatures ranging from 14 to 17 °C (57 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -1 to 1 °C (31 - 33 °F) throughout the day. On average each year, Hanko experiences 0 days above 25 °C (77.0 °F) and 58 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hanko, Uusimaa, Finland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 8°C
(46°F)		 6°C
(43°F)		 7°C
(44°F)		 9°C
(49°F)		 18°C
(64°F)		 22°C
(73°F)		 25°C
(76°F)		 23°C
(73°F)		 20°C
(68°F)		 16°C
(61°F)		 13°C
(56°F)		 8°C
(46°F)
Mean maximum 5°C
(42°F)		 4°C
(39°F)		 5°C
(41°F)		 7°C
(45°F)		 13°C
(56°F)		 17°C
(63°F)		 22°C
(72°F)		 20°C
(69°F)		 18°C
(65°F)		 14°C
(57°F)		 11°C
(51°F)		 7°C
(45°F)
Average high 2°C
(36°F)		 0°C
(33°F)		 2°C
(35°F)		 4°C
(40°F)		 9°C
(48°F)		 15°C
(59°F)		 18°C
(65°F)		 18°C
(65°F)		 15°C
(59°F)		 11°C
(51°F)		 7°C
(45°F)		 4°C
(39°F)
Daily mean 1°C
(33°F)		 -1°C
(31°F)		 0°C
(33°F)		 3°C
(38°F)		 8°C
(46°F)		 14°C
(57°F)		 17°C
(63°F)		 17°C
(63°F)		 14°C
(57°F)		 10°C
(49°F)		 6°C
(43°F)		 2°C
(36°F)
Average low -1°C
(31°F)		 -2°C
(28°F)		 -1°C
(31°F)		 2°C
(36°F)		 7°C
(44°F)		 13°C
(56°F)		 16°C
(62°F)		 17°C
(62°F)		 13°C
(56°F)		 9°C
(48°F)		 5°C
(41°F)		 1°C
(34°F)
Mean minimum -8°C
(18°F)		 -8°C
(18°F)		 -6°C
(22°F)		 -1°C
(31°F)		 2°C
(36°F)		 9°C
(49°F)		 13°C
(56°F)		 13°C
(56°F)		 9°C
(48°F)		 2°C
(36°F)		 -0°C
(32°F)		 -4°C
(26°F)
Minimum -13°C
(8°F)		 -13°C
(10°F)		 -10°C
(13°F)		 -2°C
(29°F)		 1°C
(35°F)		 6°C
(44°F)		 12°C
(53°F)		 11°C
(51°F)		 7°C
(45°F)		 1°C
(35°F)		 -3°C
(26°F)		 -9°C
(17°F)

Compare climate in Hanko with other places

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

Monthly average precipitation in Hanko, Uusimaa, Finland §

Hanko usually has the most precipitation in August, October and November, with an average of 16 rainy days and 99 mm (3.9 inches) of precipitation per month.The driest months in Hanko are April, May and June. On average, 34 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hanko, Uusimaa, Finland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 56 (2.2) 49 (1.9) 50 (2.0) 28 (1.1) 36 (1.4) 37 (1.5) 57 (2.2) 94 (3.7) 71 (2.8) 123 (4.8) 82 (3.2) 80 (3.1)
Average precipitation days (≥ 1 mm) 14 11 10 7 7 6 8 13 14 19 17 19

Monthly sunshine hours in Hanko, Uusimaa, Finland §

The sunniest months in Hanko are May, June and July, when the sun shines an average of 15 hours 37 minutes a day.Least sunny months in Hanko: January, November and December receive an average of 2 hours 58 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hanko, Uusimaa, Finland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 65 170 276 377 461 489 487 418 319 215 134 73
Mean daily daylight hours 6h 50m 9h 10m 11h 51m 14h 36m 17h 9m 18h 38m 17h 50m 15h 28m 12h 47m 10h 4m 7h 31m 6h 3m

Solar UV radiation in Hanko, Uusimaa, Finland §

Hanko experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 5 - 7, 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 Hanko UV Index data.

Average daily maximum UV levels by month for Hanko, Uusimaa, Finland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 1 3 4 5 7 7 5 4 2 1 1