Climate averages 1991–2020
Santa Ana, El Salvador weather
in September.
A hot, very wet month: the 11th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Santa Ana, El Salvador: daytime highs average 28.5°C and nights cool to about 20.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 213 mm of rain on roughly 26 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 13 min on an average September day.
The nearest other city in this atlas is Santa Tecla (45 km away). In September its highs average 25.8°C, 2.7°C cooler than Santa Ana, El Salvador, with 303 mm of rain.
Among the 6 cities listed in El Salvador, Santa Ana, El Salvador ranks 3rd of 6 for the warmest September highs and 1st of 6 for the driest September (rainfall, lowest first). The mean September high of those 6 cities is 28.3°C; Santa Ana, El Salvador is 0.2°C warmer than that mean.
From September to October, average highs fall by 0.6°C to 27.9°C, and monthly rainfall falls from 213 mm to 157 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Santa Ana, El Salvador climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.6°C18.5°C | 18.5°C | 1.7 | 0.4 | 11.411 h |
| February | 30.9°C19.2°C | 19.2°C | 1.3 | 0.3 | 11.712 h |
| March | 31.9°C20.0°C | 20.0°C | 6.2 | 1.6 | 12.012 h |
| April | 32.3°C21.4°C | 21.4°C | 31 | 7.2 | 12.412 h |
| May | 30.5°C21.7°C | 21.7°C | 138 | 20.5 | 12.813 h |
| June | 28.8°C21.2°C | 21.2°C | 186 | 24.1 | 12.913 h |
| July | 29.9°C21.2°C | 21.2°C | 97 | 15.8 | 12.913 h |
| August | 29.9°C21.3°C | 21.3°C | 122 | 20.2 | 12.613 h |
| September, selected | 28.5°C20.9°C | 20.9°C | 213 | 25.7 | 12.212 h |
| October | 27.9°C20.3°C | 20.3°C | 157 | 18.6 | 11.812 h |
| November | 28.6°C19.4°C | 19.4°C | 27 | 4.3 | 11.511 h |
| December | 29.3°C18.8°C | 18.8°C | 5.3 | 1.0 | 11.311 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Santa Tecla in SeptemberEl Salvador · 45 kmHigh 25.8°C · Low 19.2°C · 303 mm rain
- Apopa in SeptemberEl Salvador · 45 kmHigh 29.5°C · Low 22.4°C · 303 mm rain
- Jutiapa in SeptemberGuatemala · 49 kmHigh 27.3°C · Low 19.3°C · 236 mm rain
- San Salvador in SeptemberEl Salvador · 52 kmHigh 27.8°C · Low 21.0°C · 303 mm rain
- Soyapango in SeptemberEl Salvador · 55 kmHigh 27.5°C · Low 21.4°C · 303 mm rain
- Jalapa in SeptemberGuatemala · 86 kmHigh 24.5°C · Low 16.8°C · 216 mm rain
- Chiquimula in SeptemberGuatemala · 90 kmHigh 28.5°C · Low 21.5°C · 223 mm rain
- San José Pinula in SeptemberGuatemala · 111 kmHigh 21.7°C · Low 13.6°C · 322 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Santa Ana) is explained once on the Santa Ana, El Salvador year overview and on the Sources, method and limits page.