Home › Cities › Argentina › Río Gallegos
Río Gallegos, Argentina climate
BSk Cold semi-arid
Río Gallegos has a mildly seasonal cool-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is January with an average daily high near 69°F, while the coldest is July averaging around 27°F at night. Around 11 inches of precipitation falls each year, peaking in December (1.8 inches) and easing off in September (0.5 inches). At latitude 52°S, day length swings from 7.6 hours in midwinter to 16.4 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Río Gallegos climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 69 | 68 | 64 | 57 | 49 | 42 | 42 | 46 | 53 | 60 | 64 | 67 |
| Avg temp (°F) | 57 | 56 | 52 | 47 | 40 | 34 | 34 | 38 | 43 | 48 | 52 | 55 |
| Avg low (°F) | 45 | 44 | 41 | 37 | 32 | 27 | 27 | 30 | 33 | 36 | 40 | 44 |
| Precipitation (in) | 0.8 | 1.2 | 1.0 | 0.8 | 1.1 | 1.1 | 0.6 | 0.6 | 0.5 | 0.9 | 0.9 | 1.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 69 | 68 | 64 | 57 | 49 | 42 |
| Avg temp (°F) | 57 | 56 | 52 | 47 | 40 | 34 |
| Avg low (°F) | 45 | 44 | 41 | 37 | 32 | 27 |
| Precipitation (in) | 0.8 | 1.2 | 1.0 | 0.8 | 1.1 | 1.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 42 | 46 | 53 | 60 | 64 | 67 |
| Avg temp (°F) | 34 | 38 | 43 | 48 | 52 | 55 |
| Avg low (°F) | 27 | 30 | 33 | 36 | 40 | 44 |
| Precipitation (in) | 0.6 | 0.6 | 0.5 | 0.9 | 0.9 | 1.8 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 6 | 7 | 7 | 6 | 6 | 6 | 5 | 5 | 5 | 6 | 8 |
| Days with high ≥ 90°F (days) | — | 0.1 | — | — | — | — | — | — | — | — | — | — |
| Days with low ≤ 32°F (days) | 0.1 | 0.6 | 2 | 6 | 15 | 20 | 22 | 20 | 12 | 7 | 2 | 0.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 6 | 7 | 7 | 6 | 6 |
| Days with high ≥ 90°F (days) | — | 0.1 | — | — | — | — |
| Days with low ≤ 32°F (days) | 0.1 | 0.6 | 2 | 6 | 15 | 20 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 5 | 5 | 5 | 6 | 8 |
| Days with high ≥ 90°F (days) | — | — | — | — | — | — |
| Days with low ≤ 32°F (days) | 22 | 20 | 12 | 7 | 2 | 0.3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 71 | 70 | 67 | 65 | 64 | 65 | 65 | 68 | 69 | 74 | 76 |
| Relative humidity (%) | 62 | 66 | 71 | 78 | 86 | 90 | 90 | 84 | 77 | 69 | 64 | 63 |
| Wind speed (mph) | 12.2 | 11.8 | 11.2 | 10.6 | 9.8 | 9.7 | 9.8 | 10.2 | 10.3 | 10.9 | 11.7 | 11.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 71 | 70 | 67 | 65 | 64 |
| Relative humidity (%) | 62 | 66 | 71 | 78 | 86 | 90 |
| Wind speed (mph) | 12.2 | 11.8 | 11.2 | 10.6 | 9.8 | 9.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 65 | 68 | 69 | 74 | 76 |
| Relative humidity (%) | 90 | 84 | 77 | 69 | 64 | 63 |
| Wind speed (mph) | 9.8 | 10.2 | 10.3 | 10.9 | 11.7 | 11.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Rio Gallegos Aero, a weather station, about 2 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.