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Monthly climate in Stara Zagora, Bulgaria

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Stara Zagora features a humid subtropical climate (Cfa). Temperatures typically range between 1 °C (35 °F) and 24 °C (76 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 39 °C (103 °F). The average annual precipitation amounts to about 709 mm (27.9 inches) and receives 110 rainy days on the 1 mm (0.04 inches) threshold annually. Stara Zagora enjoys an average of 3734 hours of sunshine throughout the year, and daylight varies from 9 hours 6 minutes to 15 hours 13 minutes per day.

Monthly average temperatures in Stara Zagora, Bulgaria

The warmest months in Stara Zagora are June, July and August, with daily mean temperatures ranging from 21 to 24 °C (69 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 4 °C (35 - 40 °F) throughout the day. On average each year, Stara Zagora experiences 93 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 Stara Zagora. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum15°C
(60°F)		19°C
(66°F)		22°C
(72°F)		27°C
(81°F)		32°C
(89°F)		36°C
(96°F)		38°C
(100°F)		39°C
(103°F)		35°C
(95°F)		32°C
(90°F)		25°C
(77°F)		17°C
(63°F)
Mean maximum12°C
(55°F)		17°C
(62°F)		20°C
(68°F)		24°C
(76°F)		29°C
(85°F)		32°C
(90°F)		35°C
(96°F)		35°C
(96°F)		32°C
(90°F)		26°C
(79°F)		21°C
(70°F)		15°C
(59°F)
Average high5°C
(42°F)		9°C
(48°F)		12°C
(54°F)		17°C
(63°F)		23°C
(73°F)		26°C
(79°F)		29°C
(85°F)		31°C
(88°F)		27°C
(80°F)		20°C
(68°F)		12°C
(55°F)		8°C
(46°F)
Daily mean1°C
(35°F)		4°C
(40°F)		7°C
(44°F)		11°C
(53°F)		17°C
(63°F)		21°C
(69°F)		23°C
(74°F)		24°C
(76°F)		20°C
(68°F)		14°C
(57°F)		8°C
(47°F)		4°C
(40°F)
Average low-2°C
(29°F)		-0°C
(32°F)		2°C
(36°F)		6°C
(43°F)		11°C
(52°F)		15°C
(60°F)		17°C
(64°F)		18°C
(64°F)		14°C
(57°F)		9°C
(48°F)		5°C
(41°F)		1°C
(34°F)
Mean minimum-9°C
(16°F)		-8°C
(18°F)		-5°C
(23°F)		0°C
(33°F)		6°C
(43°F)		11°C
(52°F)		14°C
(57°F)		14°C
(58°F)		6°C
(43°F)		3°C
(38°F)		-1°C
(31°F)		-6°C
(21°F)
Minimum-15°C
(6°F)		-10°C
(14°F)		-18°C
(0°F)		-1°C
(30°F)		4°C
(40°F)		8°C
(46°F)		12°C
(54°F)		12°C
(53°F)		3°C
(38°F)		1°C
(34°F)		-3°C
(26°F)		-8°C
(18°F)

Compare climate in Stara Zagora with other places

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

Monthly average precipitation in Stara Zagora, Bulgaria

Stara Zagora usually has the most precipitation in June, October and December, with an average of 11 rainy days and 87 mm (3.4 inches) of precipitation per month. The driest months in Stara Zagora are April, August and September. On average, 30 mm (1.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Stara Zagora. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)50 (2.0)48 (1.9)69 (2.7)47 (1.9)66 (2.6)104 (4.1)66 (2.6)23 (0.9)18 (0.7)70 (2.7)60 (2.4)86 (3.4)
Average precipitation days (≥ 1 mm)88119121610647811

Monthly sunshine hours in Stara Zagora, Bulgaria

The sunniest months in Stara Zagora are June, July and August, when the sun shines an average of 13 hours 22 minutes a day. Least sunny months in Stara Zagora: January, November and December receive an average of 6 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Stara Zagora. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours172230286344392400426403342288230216
Mean daily daylight hours9h 27m10h 33m11h 57m13h 23m14h 36m15h 13m14h 53m13h 49m12h 26m11h 1m9h 45m9h 6m

Solar UV radiation in Stara Zagora, Bulgaria

Stara Zagora experiences the highest level of ultraviolet (UV) radiation in May, June 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 Stara Zagora UV Index data.

Average daily maximum UV levels by month for Stara Zagora. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2468910997632