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Santa Ana, El Salvador climate
Aw Tropical savanna (dry winter)
Santa Ana has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is April with an average daily high near 33°C, while the coldest is December averaging around 18°C at night. Precipitation totals about 1112 mm a year and is strongly seasonal — September alone averages 253 mm while December barely receives 1 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)Santa Ana climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 33 | 33 | 31 | 30 | 31 | 30 | 30 | 29 | 30 | 30 |
| Avg temp (°C) | 25 | 25 | 26 | 27 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 24 |
| Avg low (°C) | 18 | 18 | 20 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 19 | 18 |
| Precipitation (mm) | 1 | 4 | 10 | 43 | 139 | 240 | — | 215 | 253 | 175 | 30 | 1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 33 | 33 | 31 | 30 |
| Avg temp (°C) | 25 | 25 | 26 | 27 | 26 | 25 |
| Avg low (°C) | 18 | 18 | 20 | 21 | 21 | 21 |
| Precipitation (mm) | 1 | 4 | 10 | 43 | 139 | 240 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 30 | 30 | 29 | 30 | 30 |
| Avg temp (°C) | 26 | 26 | 25 | 25 | 25 | 24 |
| Avg low (°C) | 21 | 21 | 20 | 20 | 19 | 18 |
| Precipitation (mm) | — | 215 | 253 | 175 | 30 | 1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 22 | 25 | 31 | 48 | 70 | 75 | 67 | 68 | 76 | 66 | 41 | 24 |
| Relative humidity (%) | 65 | 62 | 61 | 65 | 73 | 79 | 76 | 78 | 82 | 80 | 73 | 69 |
| Wind speed (km/h) | 13.9 | 12.9 | 12.7 | 11.0 | 9.4 | 8.4 | 8.2 | 8.0 | 8.5 | 9.6 | 12.3 | 13.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 22 | 25 | 31 | 48 | 70 | 75 |
| Relative humidity (%) | 65 | 62 | 61 | 65 | 73 | 79 |
| Wind speed (km/h) | 13.9 | 12.9 | 12.7 | 11.0 | 9.4 | 8.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 68 | 76 | 66 | 41 | 24 |
| Relative humidity (%) | 76 | 78 | 82 | 80 | 73 | 69 |
| Wind speed (km/h) | 8.2 | 8.0 | 8.5 | 9.6 | 12.3 | 13.2 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at Ilopango Intl, a weather station, about 57 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.