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Bellinzona, Switzerland climate

Cfb Oceanic / temperate

Bellinzona has a seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is July with an average daily high near 82°F, while the coldest is January averaging around 28°F at night. Around 54 inches of precipitation falls each year, peaking in August (6.4 inches) and easing off in February (1.9 inches).

☀️ Summers

Warm

Highs near 82°F in July.

❄️ Winters

Cold

Lows near 28°F in January.

🌧️ Rain

Wet

About 54 in of rain a year.

Wettest in August

⛅ 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)

Bellinzona climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	43	48	57	64	70	77	82	80	72	62	51	43
Avg temp (°F)	33	37	45	52	59	65	69	68	60	52	42	34
Avg low (°F)	28	29	36	42	49	55	58	58	52	45	36	29
Precipitation (in)	2.3	1.9	2.5	4.2	5.6	6.1	5.7	6.4	5.4	5.3	5.8	2.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	43	48	57	64	70	77
Avg temp (°F)	33	37	45	52	59	65
Avg low (°F)	28	29	36	42	49	55
Precipitation (in)	2.3	1.9	2.5	4.2	5.6	6.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	82	80	72	62	51	43
Avg temp (°F)	69	68	60	52	42	34
Avg low (°F)	58	58	52	45	36	29
Precipitation (in)	5.7	6.4	5.4	5.3	5.8	2.8

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	68	70	72	75	75	69	62	61	63	65	70	70
Relative humidity (%)	89	91	93	87	81	79	79	80	83	86	90	89
Wind speed (mph)	2.5	2.6	2.6	2.5	2.4	2.1	2.0	1.9	1.9	1.9	2.1	2.3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	68	70	72	75	75	69
Relative humidity (%)	89	91	93	87	81	79
Wind speed (mph)	2.5	2.6	2.6	2.5	2.4	2.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	62	61	63	65	70	70
Relative humidity (%)	79	80	83	86	90	89
Wind speed (mph)	2.0	1.9	1.9	1.9	2.1	2.3

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from a national meteorological service, measured at Grono, about 13 km from the city centre.

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 →