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Monthly climate in Karlovo, Bulgaria

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Karlovo features a humid continental climate (Dfb). Temperatures typically range between -1 °C (31 °F) and 21 °C (70 °F) through the year, but rarely can drop to -18 °C (-1 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 1021 mm (40.2 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually. Karlovo enjoys an average of 3748 hours of sunshine throughout the year, and daylight varies from 9 hours 5 minutes to 15 hours 14 minutes per day.

Monthly average temperatures in Karlovo, Bulgaria

The warmest months in Karlovo are June, July and August, with daily mean temperatures ranging from 18 to 21 °C (64 - 70 °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 - 36 °F) throughout the day. On average each year, Karlovo experiences 56 days above 25 °C (77.0 °F) and 83 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Karlovo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(57°F)		17°C
(63°F)		22°C
(71°F)		25°C
(78°F)		28°C
(83°F)		32°C
(91°F)		34°C
(94°F)		36°C
(97°F)		32°C
(89°F)		28°C
(83°F)		23°C
(74°F)		14°C
(57°F)
Mean maximum11°C
(52°F)		15°C
(60°F)		19°C
(67°F)		23°C
(73°F)		26°C
(79°F)		29°C
(84°F)		32°C
(89°F)		31°C
(89°F)		29°C
(85°F)		24°C
(75°F)		19°C
(66°F)		12°C
(54°F)
Average high3°C
(38°F)		7°C
(45°F)		10°C
(50°F)		15°C
(59°F)		20°C
(68°F)		23°C
(74°F)		26°C
(79°F)		27°C
(81°F)		23°C
(74°F)		17°C
(63°F)		10°C
(51°F)		5°C
(42°F)
Daily mean-1°C
(31°F)		2°C
(36°F)		5°C
(40°F)		9°C
(49°F)		14°C
(58°F)		18°C
(64°F)		20°C
(68°F)		21°C
(70°F)		17°C
(62°F)		11°C
(52°F)		6°C
(43°F)		2°C
(36°F)
Average low-4°C
(25°F)		-2°C
(29°F)		-0°C
(32°F)		4°C
(39°F)		9°C
(48°F)		13°C
(55°F)		14°C
(58°F)		15°C
(59°F)		11°C
(52°F)		6°C
(43°F)		3°C
(38°F)		-1°C
(30°F)
Mean minimum-12°C
(11°F)		-12°C
(11°F)		-8°C
(18°F)		-3°C
(28°F)		4°C
(39°F)		8°C
(47°F)		11°C
(52°F)		11°C
(52°F)		4°C
(39°F)		1°C
(34°F)		-3°C
(26°F)		-9°C
(16°F)
Minimum-17°C
(1°F)		-15°C
(5°F)		-18°C
(-1°F)		-5°C
(24°F)		2°C
(35°F)		5°C
(41°F)		9°C
(49°F)		8°C
(48°F)		-0°C
(32°F)		-1°C
(31°F)		-8°C
(18°F)		-13°C
(8°F)

Compare climate in Karlovo with other places

Compare temperature, precipitation, sunshine, UV index in Karlovo, Bulgaria with other places around the world.

Monthly average precipitation in Karlovo, Bulgaria

Karlovo usually has the most precipitation in May, June and July, with an average of 16 rainy days and 148 mm (5.8 inches) of precipitation per month. The driest months in Karlovo are January, September and November. On average, 51 mm (2.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Karlovo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)56 (2.2)57 (2.2)89 (3.5)69 (2.7)121 (4.8)167 (6.6)157 (6.2)60 (2.3)42 (1.7)67 (2.6)55 (2.2)81 (3.2)
Average precipitation days (≥ 1 mm)8101412171914769812

Monthly sunshine hours in Karlovo, Bulgaria

The sunniest months in Karlovo are June, July and August, when the sun shines an average of 13 hours 22 minutes a day. Least sunny months in Karlovo: January, November and December receive an average of 6 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Karlovo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours174236289346392400426403344289229213
Mean daily daylight hours9h 26m10h 32m11h 57m13h 23m14h 37m15h 14m14h 55m13h 50m12h 26m11h 0m9h 44m9h 5m

Solar UV radiation in Karlovo, Bulgaria

Karlovo experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, November 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 Karlovo UV Index data.

Average daily maximum UV levels by month for Karlovo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)24789101097632