nomadseason

Monthly climate in Harku, Estonia

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Harku features a humid continental climate (Dfb). Temperatures typically range between -2 °C (29 °F) and 18 °C (65 °F) through the year, but rarely can drop to -20 °C (-4 °F) or can rise to as high as 30 °C (86 °F). The average annual precipitation amounts to about 762 mm (30.0 inches) and receives 148 rainy days on the 1 mm (0.04 inches) threshold annually. Harku enjoys an average of 3373 hours of sunshine throughout the year, and daylight varies from 6 hours 11 minutes to 18 hours 28 minutes per day.

Monthly average temperatures in Harku, Estonia

The warmest months in Harku are June, July and August, with daily mean temperatures ranging from 16 to 18 °C (60 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 0 °C (29 - 33 °F) throughout the day. On average each year, Harku experiences 7 days above 25 °C (77.0 °F) and 86 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Harku. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum8°C
(46°F)		7°C
(44°F)		10°C
(50°F)		18°C
(64°F)		23°C
(74°F)		30°C
(86°F)		30°C
(86°F)		29°C
(84°F)		24°C
(75°F)		17°C
(63°F)		13°C
(55°F)		8°C
(46°F)
Mean maximum5°C
(41°F)		5°C
(41°F)		8°C
(47°F)		14°C
(58°F)		21°C
(70°F)		23°C
(74°F)		27°C
(80°F)		25°C
(77°F)		22°C
(71°F)		15°C
(60°F)		11°C
(52°F)		6°C
(43°F)
Average high1°C
(33°F)		-0°C
(32°F)		3°C
(37°F)		7°C
(45°F)		13°C
(55°F)		19°C
(66°F)		21°C
(70°F)		20°C
(68°F)		15°C
(60°F)		10°C
(51°F)		6°C
(43°F)		2°C
(35°F)
Daily mean-1°C
(31°F)		-2°C
(29°F)		0°C
(33°F)		4°C
(40°F)		9°C
(49°F)		16°C
(60°F)		18°C
(65°F)		17°C
(63°F)		13°C
(56°F)		8°C
(47°F)		4°C
(40°F)		0°C
(33°F)
Average low-3°C
(27°F)		-4°C
(25°F)		-2°C
(29°F)		1°C
(35°F)		6°C
(43°F)		12°C
(53°F)		15°C
(59°F)		14°C
(58°F)		11°C
(52°F)		7°C
(44°F)		3°C
(38°F)		-1°C
(30°F)
Mean minimum-11°C
(13°F)		-11°C
(12°F)		-10°C
(13°F)		-4°C
(25°F)		0°C
(33°F)		6°C
(44°F)		11°C
(51°F)		10°C
(50°F)		5°C
(41°F)		-0°C
(32°F)		-2°C
(29°F)		-8°C
(18°F)
Minimum-15°C
(5°F)		-20°C
(-4°F)		-18°C
(1°F)		-7°C
(20°F)		-1°C
(30°F)		5°C
(41°F)		10°C
(49°F)		9°C
(48°F)		3°C
(38°F)		-2°C
(29°F)		-4°C
(24°F)		-17°C
(2°F)

Compare climate in Harku with other places

Compare temperature, precipitation, sunshine, UV index in Harku, Estonia with other places around the world.

Monthly average precipitation in Harku, Estonia

Harku usually has the most precipitation in August, September and October, with an average of 15 rainy days and 96 mm (3.8 inches) of precipitation per month. The driest months in Harku are January, March and April. On average, 44 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Harku. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)45 (1.8)49 (1.9)48 (1.9)39 (1.5)52 (2.0)53 (2.1)65 (2.6)101 (4.0)78 (3.1)108 (4.2)62 (2.4)62 (2.4)
Average precipitation days (≥ 1 mm)121212998101514181316

Monthly sunshine hours in Harku, Estonia

The sunniest months in Harku are May, June and July, when the sun shines an average of 15 hours 25 minutes a day. Least sunny months in Harku: January, November and December receive an average of 2 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Harku. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours6115826636645248647940630320412265
Mean daily daylight hours6h 57m9h 13m11h 51m14h 33m17h 3m18h 28m17h 42m15h 24m12h 46m10h 6m7h 37m6h 11m

Solar UV radiation in Harku, Estonia

Harku 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 Harku UV Index data.

Average daily maximum UV levels by month for Harku. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)113457754211