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La Rioja, Argentina climate
BSh Hot semi-arid
La Rioja has a seasonal warm-temperate climate (Hot semi-arid, Köppen BSh). The hottest month is January with an average daily high near 35°C, while the coldest is July averaging around 4°C at night. Precipitation totals about 410 mm a year and is strongly seasonal — January alone averages 90 mm while August barely receives 3 mm.
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)La Rioja climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 35 | 33 | 31 | 27 | 23 | 20 | 20 | 23 | 27 | 31 | 34 | 35 |
| Avg temp (°C) | 28 | 26 | 24 | 20 | 15 | 11 | 11 | 14 | 18 | 23 | 26 | 28 |
| Avg low (°C) | 22 | 20 | 19 | 15 | 10 | 6 | 4 | 7 | 11 | 16 | 19 | 21 |
| Precipitation (mm) | 90 | 79 | 63 | 31 | 8 | 4 | 4 | 3 | 9 | 20 | 32 | 67 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 35 | 33 | 31 | 27 | 23 | 20 |
| Avg temp (°C) | 28 | 26 | 24 | 20 | 15 | 11 |
| Avg low (°C) | 22 | 20 | 19 | 15 | 10 | 6 |
| Precipitation (mm) | 90 | 79 | 63 | 31 | 8 | 4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 23 | 27 | 31 | 34 | 35 |
| Avg temp (°C) | 11 | 14 | 18 | 23 | 26 | 28 |
| Avg low (°C) | 4 | 7 | 11 | 16 | 19 | 21 |
| Precipitation (mm) | 4 | 3 | 9 | 20 | 32 | 67 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 52 | 51 | 48 | 46 | 48 | 45 | 38 | 34 | 35 | 41 | 44 | 48 |
| Relative humidity (%) | 51 | 56 | 60 | 62 | 61 | 57 | 52 | 44 | 41 | 42 | 43 | 46 |
| Wind speed (m/s) | 2.8 | 2.6 | 2.3 | 2.0 | 1.7 | 1.6 | 1.7 | 2.0 | 2.5 | 3.0 | 3.2 | 3.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 52 | 51 | 48 | 46 | 48 | 45 |
| Relative humidity (%) | 51 | 56 | 60 | 62 | 61 | 57 |
| Wind speed (m/s) | 2.8 | 2.6 | 2.3 | 2.0 | 1.7 | 1.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 38 | 34 | 35 | 41 | 44 | 48 |
| Relative humidity (%) | 52 | 44 | 41 | 42 | 43 | 46 |
| Wind speed (m/s) | 1.7 | 2.0 | 2.5 | 3.0 | 3.2 | 3.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at La_rioja_aero, about 7 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.