Climate averages 1991–2020
San Salvador weather
in January.
A hot, very dry month: the 4th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a hot month in San Salvador: daytime highs average 30.3°C and nights cool to about 19.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 1.9 mm of rain on fewer than one day, which makes January a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 25 min on an average January day.
The nearest other city in this atlas is Soyapango (6 km away). In January its highs average 29.7°C, 0.5°C cooler than San Salvador, with 1.9 mm of rain.
Among the 6 cities listed in El Salvador, San Salvador ranks 3rd of 6 for the warmest January highs and joint 3rd of 6 for the driest January (rainfall, lowest first). The mean January high of those 6 cities is 30.7°C; San Salvador is 0.5°C cooler than that mean.
From January to February, average highs rise by 1.0°C to 31.3°C, and monthly rainfall rises from 1.9 mm to 2.0 mm.
The annual picture
January 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
San Salvador climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 30.3°C19.3°C | 19.3°C | 1.9 | 0.6 | 11.411 h |
| February | 31.3°C19.8°C | 19.8°C | 2.0 | 0.5 | 11.712 h |
| March | 31.7°C20.6°C | 20.6°C | 9.8 | 2.9 | 12.012 h |
| April | 31.0°C21.6°C | 21.6°C | 50 | 11.3 | 12.412 h |
| May | 29.2°C21.7°C | 21.7°C | 222 | 24.9 | 12.813 h |
| June | 28.2°C21.4°C | 21.4°C | 248 | 26.2 | 12.913 h |
| July | 29.2°C21.2°C | 21.2°C | 186 | 22.3 | 12.813 h |
| August | 28.9°C21.3°C | 21.3°C | 230 | 26.0 | 12.613 h |
| September | 27.8°C21.0°C | 21.0°C | 303 | 28.4 | 12.212 h |
| October | 27.6°C20.6°C | 20.6°C | 232 | 23.3 | 11.812 h |
| November | 28.5°C19.9°C | 19.9°C | 45 | 7.6 | 11.512 h |
| December | 29.6°C19.5°C | 19.5°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
January in nearby cities
- Soyapango in JanuaryEl Salvador · 6 kmHigh 29.7°C · Low 19.6°C · 1.9 mm rain
- Santa Tecla in JanuaryEl Salvador · 10 kmHigh 28.4°C · Low 17.4°C · 1.9 mm rain
- Apopa in JanuaryEl Salvador · 13 kmHigh 31.7°C · Low 20.2°C · 1.9 mm rain
- Santa Ana, El Salvador in JanuaryEl Salvador · 52 kmHigh 29.6°C · Low 18.5°C · 1.7 mm rain
- Jutiapa in JanuaryGuatemala · 101 kmHigh 27.7°C · Low 16.5°C · 1.6 mm rain
- San Miguel, El Salvador in JanuaryEl Salvador · 111 kmHigh 34.7°C · Low 22.4°C · 1.2 mm rain
- Chiquimula in JanuaryGuatemala · 130 kmHigh 25.0°C · Low 18.1°C · 11 mm rain
- Jalapa in JanuaryGuatemala · 136 kmHigh 23.8°C · Low 13.5°C · 6.1 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 San Salvador) is explained once on the San Salvador year overview and on the Sources, method and limits page.
Soyapango, 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.