Santa Rosa, Argentina climate

Cfa Humid subtropical

Santa Rosa has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is January with an average daily high near 89°F, while the coldest is July averaging around 36°F at night. Precipitation totals about 30 inches a year and is strongly seasonal — March alone averages 3.9 inches while June barely receives 0.68 inches.

☀️ Summers

Hot

Highs near 89°F in January.

❄️ Winters

Chilly

Lows near 36°F in July.

🌧️ Rain

Moderate rainfall

About 30 in of rain a year.

Wettest in March

⛅ 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)

Santa Rosa climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	89	86	81	73	65	59	58	64	69	73	81	87
Avg temp (°F)	75	72	67	59	52	47	45	49	55	60	67	73
Avg low (°F)	62	59	56	49	43	37	36	38	43	49	54	59
Precipitation (in)	3.8	3.5	3.9	2.5	1.3	0.7	0.7	1.1	2.0	3.6	3.0	3.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	89	86	81	73	65	59
Avg temp (°F)	75	72	67	59	52	47
Avg low (°F)	62	59	56	49	43	37
Precipitation (in)	3.8	3.5	3.9	2.5	1.3	0.7

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	58	64	69	73	81	87
Avg temp (°F)	45	49	55	60	67	73
Avg low (°F)	36	38	43	49	54	59
Precipitation (in)	0.7	1.1	2.0	3.6	3.0	3.8

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	44	43	43	49	59	58	58	54	55	54	48	46
Relative humidity (%)	49	53	61	67	75	76	74	66	60	59	52	48
Wind speed (mph)	0.8	0.8	0.8	0.8	0.9	1.1	1.3	1.5	1.3	1.0	0.8	0.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	44	43	43	49	59	58
Relative humidity (%)	49	53	61	67	75	76
Wind speed (mph)	0.8	0.8	0.8	0.8	0.9	1.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	58	54	55	54	48	46
Relative humidity (%)	74	66	60	59	52	48
Wind speed (mph)	1.3	1.5	1.3	1.0	0.8	0.8

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Santa_rosa_aero, about 3 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 →