nomadseason

Monthly climate in Costesti, Romania

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Costesti features a oceanic climate (Cfb). Temperatures typically range between -1 °C (31 °F) and 23 °C (73 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 561 mm (22.1 inches) and receives 89 rainy days on the 1 mm (0.04 inches) threshold annually. Costesti enjoys an average of 3682 hours of sunshine throughout the year, and daylight varies from 8 hours 37 minutes to 15 hours 44 minutes per day.

Monthly average temperatures in Costesti, Romania

The warmest months in Costesti are June, July and August, with daily mean temperatures ranging from 21 to 23 °C (70 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 2 °C (31 - 35 °F) throughout the day. On average each year, Costesti experiences 76 days above 25 °C (77.0 °F) and 78 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Costesti. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(57°F)		20°C
(68°F)		24°C
(75°F)		28°C
(83°F)		30°C
(86°F)		32°C
(90°F)		36°C
(96°F)		36°C
(97°F)		34°C
(94°F)		27°C
(80°F)		24°C
(75°F)		16°C
(61°F)
Mean maximum10°C
(50°F)		16°C
(60°F)		20°C
(69°F)		24°C
(75°F)		28°C
(83°F)		31°C
(88°F)		34°C
(93°F)		34°C
(93°F)		31°C
(88°F)		25°C
(77°F)		19°C
(66°F)		12°C
(53°F)
Average high2°C
(36°F)		5°C
(42°F)		10°C
(50°F)		16°C
(61°F)		22°C
(71°F)		26°C
(79°F)		27°C
(82°F)		29°C
(84°F)		24°C
(75°F)		17°C
(63°F)		9°C
(49°F)		4°C
(40°F)
Daily mean-1°C
(31°F)		2°C
(35°F)		5°C
(42°F)		11°C
(52°F)		16°C
(62°F)		21°C
(70°F)		22°C
(72°F)		23°C
(73°F)		18°C
(64°F)		12°C
(54°F)		6°C
(43°F)		2°C
(35°F)
Average low-4°C
(25°F)		-2°C
(29°F)		1°C
(34°F)		5°C
(42°F)		11°C
(52°F)		16°C
(61°F)		17°C
(63°F)		17°C
(63°F)		12°C
(54°F)		7°C
(46°F)		3°C
(38°F)		-1°C
(31°F)
Mean minimum-13°C
(10°F)		-10°C
(14°F)		-7°C
(20°F)		-2°C
(29°F)		5°C
(41°F)		11°C
(51°F)		12°C
(53°F)		12°C
(54°F)		5°C
(41°F)		1°C
(35°F)		-4°C
(25°F)		-8°C
(18°F)
Minimum-18°C
(0°F)		-16°C
(4°F)		-16°C
(4°F)		-5°C
(23°F)		4°C
(39°F)		7°C
(45°F)		10°C
(50°F)		9°C
(48°F)		1°C
(34°F)		-1°C
(31°F)		-7°C
(19°F)		-14°C
(7°F)

Compare climate in Costesti with other places

Compare temperature, precipitation, sunshine, UV index in Costesti, Romania with other places around the world.

Monthly average precipitation in Costesti, Romania

Costesti usually has the most precipitation in May, June and July, with an average of 10 rainy days and 78 mm (3.1 inches) of precipitation per month. The driest months in Costesti are January, September and November. On average, 29 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Costesti. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)27 (1.1)36 (1.4)38 (1.5)42 (1.7)58 (2.3)102 (4.0)73 (2.9)34 (1.4)31 (1.2)38 (1.5)29 (1.1)53 (2.1)
Average precipitation days (≥ 1 mm)478710139555610

Monthly sunshine hours in Costesti, Romania

The sunniest months in Costesti are May, July and August, when the sun shines an average of 13 hours 21 minutes a day. Least sunny months in Costesti: January, November and December receive an average of 5 hours 55 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Costesti. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours164225291346403402428409340289206174
Mean daily daylight hours9h 1m10h 19m11h 56m13h 35m15h 1m15h 44m15h 21m14h 5m12h 30m10h 51m9h 23m8h 37m

Solar UV radiation in Costesti, Romania

Costesti experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure. January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Costesti UV Index data.

Average daily maximum UV levels by month for Costesti. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235689987532