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Monthly climate in Troyan, Bulgaria

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Troyan features a humid continental climate (Dfb). Temperatures typically range between 0 °C (32 °F) and 22 °C (71 °F) through the year, but rarely can drop to -16 °C (3 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 960 mm (37.8 inches) and receives 125 rainy days on the 1 mm (0.04 inches) threshold annually. Troyan enjoys an average of 3734 hours of sunshine throughout the year, and daylight varies from 9 hours 3 minutes to 15 hours 16 minutes per day.

Monthly average temperatures in Troyan, Bulgaria

The warmest months in Troyan are June, July and August, with daily mean temperatures ranging from 19 to 22 °C (66 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 3 °C (32 - 37 °F) throughout the day. On average each year, Troyan experiences 68 days above 25 °C (77.0 °F) and 75 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Troyan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum16°C
(61°F)		19°C
(66°F)		23°C
(74°F)		26°C
(79°F)		30°C
(86°F)		34°C
(93°F)		36°C
(97°F)		37°C
(99°F)		34°C
(93°F)		30°C
(86°F)		24°C
(75°F)		15°C
(59°F)
Mean maximum12°C
(55°F)		17°C
(63°F)		20°C
(69°F)		24°C
(75°F)		27°C
(81°F)		30°C
(86°F)		33°C
(92°F)		33°C
(91°F)		31°C
(87°F)		25°C
(77°F)		20°C
(68°F)		14°C
(57°F)
Average high4°C
(39°F)		8°C
(46°F)		10°C
(51°F)		16°C
(61°F)		20°C
(69°F)		24°C
(75°F)		27°C
(80°F)		28°C
(83°F)		24°C
(75°F)		18°C
(64°F)		11°C
(52°F)		6°C
(43°F)
Daily mean-0°C
(32°F)		3°C
(37°F)		5°C
(42°F)		10°C
(50°F)		15°C
(60°F)		19°C
(66°F)		21°C
(70°F)		22°C
(71°F)		17°C
(64°F)		12°C
(53°F)		7°C
(44°F)		2°C
(36°F)
Average low-4°C
(26°F)		-1°C
(30°F)		1°C
(33°F)		5°C
(41°F)		10°C
(50°F)		14°C
(57°F)		15°C
(60°F)		15°C
(60°F)		12°C
(53°F)		7°C
(45°F)		3°C
(38°F)		-1°C
(31°F)
Mean minimum-12°C
(11°F)		-10°C
(13°F)		-7°C
(20°F)		-2°C
(30°F)		5°C
(41°F)		9°C
(49°F)		12°C
(53°F)		12°C
(53°F)		4°C
(39°F)		1°C
(35°F)		-4°C
(25°F)		-9°C
(16°F)
Minimum-16°C
(3°F)		-12°C
(11°F)		-16°C
(3°F)		-4°C
(24°F)		3°C
(37°F)		6°C
(43°F)		10°C
(50°F)		9°C
(49°F)		-0°C
(31°F)		-1°C
(30°F)		-9°C
(15°F)		-13°C
(10°F)

Compare climate in Troyan with other places

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

Monthly average precipitation in Troyan, Bulgaria

Troyan usually has the most precipitation in May, June and July, with an average of 15 rainy days and 132 mm (5.2 inches) of precipitation per month. The driest months in Troyan are August, September and November. On average, 47 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Troyan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)58 (2.3)60 (2.4)91 (3.6)63 (2.5)113 (4.5)143 (5.6)139 (5.5)46 (1.8)39 (1.5)72 (2.8)56 (2.2)79 (3.1)
Average precipitation days (≥ 1 mm)8101310161713658712

Monthly sunshine hours in Troyan, Bulgaria

The sunniest months in Troyan are June, July and August, when the sun shines an average of 13 hours 24 minutes a day. Least sunny months in Troyan: January, November and December receive an average of 6 hours 35 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Troyan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours172234287346391401427404345289226207
Mean daily daylight hours9h 24m10h 31m11h 57m13h 24m14h 39m15h 16m14h 56m13h 50m12h 27m10h 59m9h 43m9h 3m

Solar UV radiation in Troyan, Bulgaria

Troyan 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 Troyan UV Index data.

Average daily maximum UV levels by month for Troyan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2467810997532