Climate averages 1991–2020
Soyapango weather
in September.
A warm, 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 warm month in Soyapango: daytime highs average 27.5°C and nights cool to about 21.4°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 303 mm of rain on roughly 28 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 San Salvador (6 km away). In September its highs average 27.8°C, about as warm as Soyapango, with 303 mm of rain.
Among the 6 cities listed in El Salvador, Soyapango ranks 5th of 6 for the warmest September highs and joint 2nd of 6 for the driest September (rainfall, lowest first). The mean September high of those 6 cities is 28.3°C; Soyapango is 0.8°C cooler than that mean.
From September to October, average highs fall by 0.1°C to 27.4°C, and monthly rainfall falls from 303 mm to 232 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
Soyapango climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C19.6°C | 19.6°C | 1.9 | 0.6 | 11.411 h |
| February | 30.7°C20.3°C | 20.3°C | 2.0 | 0.5 | 11.712 h |
| March | 31.2°C21.1°C | 21.1°C | 9.8 | 2.9 | 12.012 h |
| April | 30.7°C22.1°C | 22.1°C | 50 | 11.3 | 12.412 h |
| May | 29.0°C22.1°C | 22.1°C | 222 | 24.9 | 12.813 h |
| June | 28.1°C21.7°C | 21.7°C | 248 | 26.2 | 12.913 h |
| July | 29.2°C21.6°C | 21.6°C | 186 | 22.3 | 12.913 h |
| August | 28.8°C21.7°C | 21.7°C | 230 | 26.0 | 12.613 h |
| September, selected | 27.5°C21.4°C | 21.4°C | 303 | 28.4 | 12.212 h |
| October | 27.4°C20.9°C | 20.9°C | 232 | 23.3 | 11.812 h |
| November | 28.3°C20.1°C | 20.1°C | 45 | 7.6 | 11.512 h |
| December | 29.3°C19.7°C | 19.7°C | 6.8 | 1.3 | 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
- San Salvador in SeptemberEl Salvador · 6 kmHigh 27.8°C · Low 21.0°C · 303 mm rain
- Apopa in SeptemberEl Salvador · 12 kmHigh 29.5°C · Low 22.4°C · 303 mm rain
- Santa Tecla in SeptemberEl Salvador · 16 kmHigh 25.8°C · Low 19.2°C · 303 mm rain
- Santa Ana, El Salvador in SeptemberEl Salvador · 55 kmHigh 28.5°C · Low 20.9°C · 213 mm rain
- Jutiapa in SeptemberGuatemala · 103 kmHigh 27.3°C · Low 19.3°C · 236 mm rain
- San Miguel, El Salvador in SeptemberEl Salvador · 107 kmHigh 30.9°C · Low 23.6°C · 343 mm rain
- Chiquimula in SeptemberGuatemala · 129 kmHigh 28.5°C · Low 21.5°C · 223 mm rain
- Jalapa in SeptemberGuatemala · 138 kmHigh 24.5°C · Low 16.8°C · 216 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 Soyapango) is explained once on the Soyapango year overview and on the Sources, method and limits page.
San Salvador, Santa Tecla and Apopa lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.