Rawson, Argentina climate

BSk Cold semi-arid

Rawson has a seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is January with an average daily high near 86°F, while the coldest is July averaging around 31°F at night. Precipitation totals about 12 inches a year and is strongly seasonal — February alone averages 2.3 inches while July barely receives 0.18 inches.

☀️ Summers

Warm

Highs near 86°F in January.

About 23 days a year above 90 °F

❄️ Winters

Cold

Lows near 31°F in July.

About 61 freezing nights a year

🌧️ Rain

Fairly dry

About 12 in of rain a year.

Wettest in February

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+0.6 °F vs 50 years ago

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)

Rawson climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	86	83	79	71	62	56	55	60	64	71	77	83
Avg temp (°F)	71	68	65	57	50	44	43	48	51	58	63	68
Avg low (°F)	56	54	51	44	38	33	31	35	38	44	49	53
Precipitation (in)	0.6	2.3	0.9	2.3	1.2	1.8	0.2	0.6	0.9	0.5	0.5	0.3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	86	83	79	71	62	56
Avg temp (°F)	71	68	65	57	50	44
Avg low (°F)	56	54	51	44	38	33
Precipitation (in)	0.6	2.3	0.9	2.3	1.2	1.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	55	60	64	71	77	83
Avg temp (°F)	43	48	51	58	63	68
Avg low (°F)	31	35	38	44	49	53
Precipitation (in)	0.2	0.6	0.9	0.5	0.5	0.3

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	3	4	4	3	5	5	4	4	4	4	3	3
Days with high ≥ 90°F (days)	8	6	3	0.2	—	—	—	—	0.0	0.4	2	5
Days with low ≤ 32°F (days)	—	—	0.2	2	8	15	17	11	6	2	0.2	—

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	3	4	4	3	5	5
Days with high ≥ 90°F (days)	8	6	3	0.2	—	—
Days with low ≤ 32°F (days)	—	—	0.2	2	8	15

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	4	4	4	4	3	3
Days with high ≥ 90°F (days)	—	—	0.0	0.4	2	5
Days with low ≤ 32°F (days)	17	11	6	2	0.2	—

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	45	46	50	53	62	61	58	59	55	56	54	50
Relative humidity (%)	46	51	55	61	70	76	75	70	64	57	50	46
Wind speed (mph)	11.3	11.2	10.6	10.6	10.2	10.8	10.7	10.4	10.3	10.4	10.7	11.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	45	46	50	53	62	61
Relative humidity (%)	46	51	55	61	70	76
Wind speed (mph)	11.3	11.2	10.6	10.6	10.2	10.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	58	59	55	56	54	50
Relative humidity (%)	75	70	64	57	50	46
Wind speed (mph)	10.7	10.4	10.3	10.4	10.7	11.2

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 24 years of daily observations at Trelew Aero, a weather station, about 17 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 →