Yambol, Bulgaria climate

Cfa Humid subtropical

Yambol has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 31°C, while the coldest is January averaging around −1°C at night. Around 626 mm of precipitation falls each year, peaking in June (81 mm) and easing off in April (37 mm).

☀️ Summers

Warm

Highs near 31°C in August.

❄️ Winters

Cold

Lows near −1°C in January.

🌧️ Rain

Moderate rainfall

About 626 mm of rain a year.

Wettest in June

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Yambol climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	6	9	13	18	23	27	30	31	26	19	13	7
Avg temp (°C)	3	4	8	13	18	22	24	25	20	14	9	4
Avg low (°C)	−1	0	3	7	12	16	19	19	14	10	5	0
Precipitation (mm)	42	42	48	37	79	81	61	39	51	48	44	55

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	6	9	13	18	23	27
Avg temp (°C)	3	4	8	13	18	22
Avg low (°C)	−1	0	3	7	12	16
Precipitation (mm)	42	42	48	37	79	81

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	31	26	19	13	7
Avg temp (°C)	24	25	20	14	9	4
Avg low (°C)	19	19	14	10	5	0
Precipitation (mm)	61	39	51	48	44	55

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	68	69	69	65	61	52	41	38	51	61	67	70
Relative humidity (%)	86	82	77	73	68	62	54	52	61	73	82	86
Wind speed (mph)	4.7	5.2	5.1	4.6	4.2	4.0	4.3	4.4	4.4	4.4	4.4	4.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	68	69	69	65	61	52
Relative humidity (%)	86	82	77	73	68	62
Wind speed (mph)	4.7	5.2	5.1	4.6	4.2	4.0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	41	38	51	61	67	70
Relative humidity (%)	54	52	61	73	82	86
Wind speed (mph)	4.3	4.4	4.4	4.4	4.4	4.8

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Sliven, a weather station, about 25 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →