Bratislava, Slovakia climate

Cfb Oceanic / temperate

Bratislava has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 28°C, while the coldest is January averaging around −3°C at night. Around 595 mm of precipitation falls each year, peaking in September (72 mm) and easing off in February (32 mm).

☀️ Summers

Warm

Highs near 28°C in July.

❄️ Winters

Cold

Lows near −3°C in January.

🌧️ Rain

Moderate rainfall

About 595 mm of rain a year.

Wettest in September

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

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)

Bratislava climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	3	6	11	17	22	25	28	27	22	15	9	4
Avg temp (°C)	0	2	6	11	16	20	22	22	16	11	6	1
Avg low (°C)	−3	−2	1	6	10	14	16	16	11	6	2	−2
Precipitation (mm)	39	32	38	36	57	61	63	58	72	45	49	43

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	3	6	11	17	22	25
Avg temp (°C)	0	2	6	11	16	20
Avg low (°C)	−3	−2	1	6	10	14
Precipitation (mm)	39	32	38	36	57	61

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	28	27	22	15	9	4
Avg temp (°C)	22	22	16	11	6	1
Avg low (°C)	16	16	11	6	2	−2
Precipitation (mm)	63	58	72	45	49	43

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	72	72	68	62	65	64	61	56	62	67	74	74
Relative humidity (%)	91	87	79	72	68	63	58	58	66	77	87	91
Wind speed (km/h)	10.2	11.1	10.9	10.2	10.0	9.3	9.2	8.2	9.2	9.4	10.0	9.9

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	72	72	68	62	65	64
Relative humidity (%)	91	87	79	72	68	63
Wind speed (km/h)	10.2	11.1	10.9	10.2	10.0	9.3

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	61	56	62	67	74	74
Relative humidity (%)	58	58	66	77	87	91
Wind speed (km/h)	9.2	8.2	9.2	9.4	10.0	9.9

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at M R Stefanik, a weather station, about 8 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 →