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Monthly climate in Gradiska, Bosnia and Herzegovina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Gradiska features a oceanic climate (Cfb). Temperatures typically range between 1 °C (34 °F) and 23 °C (74 °F) through the year, but rarely can drop to -18 °C (-1 °F) or can rise to as high as 39 °C (103 °F). The average annual precipitation amounts to about 877 mm (34.5 inches) and receives 117 rainy days on the 1 mm (0.04 inches) threshold annually. Gradiska enjoys an average of 3637 hours of sunshine throughout the year, and daylight varies from 8 hours 48 minutes to 15 hours 33 minutes per day.

Monthly average temperatures in Gradiska, Bosnia and Herzegovina

The warmest months in Gradiska are June, July and August, with daily mean temperatures ranging from 22 to 23 °C (71 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 5 °C (34 - 41 °F) throughout the day. On average each year, Gradiska experiences 84 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 Gradiska. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum17°C
(64°F)		21°C
(71°F)		24°C
(76°F)		30°C
(86°F)		31°C
(88°F)		37°C
(99°F)		38°C
(100°F)		39°C
(103°F)		34°C
(94°F)		28°C
(83°F)		22°C
(72°F)		17°C
(64°F)
Mean maximum14°C
(58°F)		18°C
(64°F)		22°C
(72°F)		27°C
(80°F)		28°C
(84°F)		33°C
(91°F)		35°C
(95°F)		36°C
(97°F)		32°C
(90°F)		26°C
(80°F)		20°C
(68°F)		15°C
(60°F)
Average high5°C
(41°F)		10°C
(49°F)		13°C
(56°F)		18°C
(65°F)		22°C
(72°F)		27°C
(81°F)		29°C
(84°F)		30°C
(86°F)		24°C
(75°F)		19°C
(66°F)		11°C
(52°F)		7°C
(44°F)
Daily mean1°C
(34°F)		5°C
(41°F)		7°C
(46°F)		12°C
(54°F)		17°C
(62°F)		22°C
(71°F)		23°C
(74°F)		23°C
(74°F)		18°C
(64°F)		13°C
(55°F)		8°C
(46°F)		3°C
(38°F)
Average low-2°C
(28°F)		0°C
(33°F)		2°C
(36°F)		7°C
(44°F)		11°C
(53°F)		16°C
(61°F)		17°C
(63°F)		18°C
(64°F)		13°C
(55°F)		8°C
(47°F)		5°C
(40°F)		0°C
(33°F)
Mean minimum-8°C
(18°F)		-6°C
(21°F)		-6°C
(22°F)		0°C
(32°F)		6°C
(42°F)		11°C
(51°F)		12°C
(55°F)		12°C
(54°F)		6°C
(44°F)		3°C
(38°F)		-1°C
(31°F)		-5°C
(23°F)
Minimum-16°C
(4°F)		-10°C
(15°F)		-18°C
(-1°F)		-3°C
(26°F)		4°C
(39°F)		9°C
(49°F)		10°C
(50°F)		9°C
(48°F)		3°C
(37°F)		0°C
(32°F)		-2°C
(28°F)		-9°C
(16°F)

Compare climate in Gradiska with other places

Compare temperature, precipitation, sunshine, UV index in Gradiska, Bosnia and Herzegovina with other places around the world.

Monthly average precipitation in Gradiska, Bosnia and Herzegovina

Gradiska usually has the most precipitation in May, June and July, with an average of 12 rainy days and 99 mm (3.9 inches) of precipitation per month. The driest months in Gradiska are January, March and November. On average, 54 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Gradiska. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)45 (1.8)64 (2.5)57 (2.3)68 (2.7)109 (4.3)97 (3.8)91 (3.6)72 (2.8)65 (2.5)76 (3.0)59 (2.3)75 (3.0)
Average precipitation days (≥ 1 mm)89101016129888910

Monthly sunshine hours in Gradiska, Bosnia and Herzegovina

The sunniest months in Gradiska are June, July and August, when the sun shines an average of 13 hours 11 minutes a day. Least sunny months in Gradiska: January, November and December receive an average of 6 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Gradiska. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours167227303335376399424389333282197200
Mean daily daylight hours9h 10m10h 24m11h 56m13h 31m14h 52m15h 33m15h 11m13h 59m12h 28m10h 54m9h 31m8h 48m

Solar UV radiation in Gradiska, Bosnia and Herzegovina

Gradiska 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 Gradiska UV Index data.

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