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Monthly climate in Ostrov, Russian Federation

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Ostrov features a humid continental climate (Dfb). Temperatures typically range between -3 °C (27 °F) and 18 °C (65 °F) through the year, but rarely can drop to -25 °C (-13 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 738 mm (29.0 inches) and receives 147 rainy days on the 1 mm (0.04 inches) threshold annually. Ostrov enjoys an average of 3122 hours of sunshine throughout the year, and daylight varies from 6 hours 43 minutes to 17 hours 50 minutes per day.

Monthly average temperatures in Ostrov, Russian Federation

The warmest months in Ostrov are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (62 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to -2 °C (27 - 29 °F) throughout the day. On average each year, Ostrov experiences 21 days above 25 °C (77.0 °F) and 118 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ostrov. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum7°C
(45°F)		9°C
(49°F)		15°C
(60°F)		24°C
(76°F)		27°C
(80°F)		33°C
(92°F)		32°C
(90°F)		30°C
(86°F)		27°C
(81°F)		19°C
(67°F)		12°C
(53°F)		9°C
(48°F)
Mean maximum5°C
(41°F)		6°C
(42°F)		12°C
(53°F)		20°C
(68°F)		24°C
(76°F)		27°C
(81°F)		29°C
(84°F)		27°C
(82°F)		25°C
(77°F)		17°C
(63°F)		11°C
(52°F)		5°C
(42°F)
Average high-1°C
(30°F)		-1°C
(31°F)		4°C
(40°F)		10°C
(51°F)		17°C
(62°F)		22°C
(72°F)		22°C
(73°F)		21°C
(71°F)		17°C
(62°F)		11°C
(51°F)		5°C
(41°F)		-0°C
(32°F)
Daily mean-3°C
(27°F)		-3°C
(27°F)		0°C
(33°F)		6°C
(43°F)		11°C
(53°F)		17°C
(63°F)		18°C
(65°F)		17°C
(62°F)		12°C
(55°F)		7°C
(46°F)		3°C
(38°F)		-2°C
(29°F)
Average low-5°C
(23°F)		-6°C
(22°F)		-4°C
(26°F)		1°C
(33°F)		6°C
(42°F)		11°C
(52°F)		13°C
(56°F)		12°C
(54°F)		9°C
(48°F)		5°C
(40°F)		1°C
(34°F)		-3°C
(26°F)
Mean minimum-16°C
(3°F)		-17°C
(2°F)		-14°C
(7°F)		-6°C
(22°F)		-2°C
(29°F)		4°C
(39°F)		7°C
(46°F)		7°C
(44°F)		2°C
(36°F)		-3°C
(27°F)		-6°C
(22°F)		-11°C
(12°F)
Minimum-25°C
(-13°F)		-24°C
(-12°F)		-21°C
(-5°F)		-8°C
(19°F)		-4°C
(26°F)		1°C
(33°F)		5°C
(42°F)		5°C
(42°F)		-1°C
(30°F)		-6°C
(21°F)		-11°C
(12°F)		-24°C
(-10°F)

Compare climate in Ostrov with other places

Compare temperature, precipitation, sunshine, UV index in Ostrov, Russian Federation with other places around the world.

Monthly average precipitation in Ostrov, Russian Federation

Ostrov usually has the most precipitation in May, July and August, with an average of 12 rainy days and 85 mm (3.4 inches) of precipitation per month. The driest months in Ostrov are January, February and April. On average, 42 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ostrov. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)41 (1.6)39 (1.5)49 (1.9)45 (1.8)72 (2.8)63 (2.5)74 (2.9)109 (4.3)60 (2.4)69 (2.7)58 (2.3)58 (2.3)
Average precipitation days (≥ 1 mm)111012121211141212141215

Monthly sunshine hours in Ostrov, Russian Federation

The sunniest months in Ostrov are May, June and July, when the sun shines an average of 14 hours 19 minutes a day. Least sunny months in Ostrov: January, November and December receive an average of 2 hours 22 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ostrov. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours621292533284244554383832921999758
Mean daily daylight hours7h 24m9h 27m11h 52m14h 21m16h 36m17h 50m17h 10m15h 7m12h 43m10h 15m8h 0m6h 43m

Solar UV radiation in Ostrov, Russian Federation

Ostrov experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 6 - 7, which corresponds to the High category of sun exposure. January, November and December 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 Ostrov UV Index data.

Average daily maximum UV levels by month for Ostrov. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)123467764211