Climate averages 1991–2020
Santa Ana, El Salvador weather
in December.
A hot, very dry month: the 8th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Santa Ana, El Salvador: daytime highs average 29.3°C and nights cool to about 18.8°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 5.3 mm of rain on roughly 1 day, which makes December a very dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 19 min on an average December day.
The nearest other city in this atlas is Santa Tecla (45 km away). In December its highs average 27.7°C, 1.6°C cooler than Santa Ana, El Salvador, with 6.8 mm of rain.
Among the 6 cities listed in El Salvador, Santa Ana, El Salvador ranks joint 4th of 6 for the warmest December highs and 1st of 6 for the driest December (rainfall, lowest first). The mean December high of those 6 cities is 30.1°C; Santa Ana, El Salvador is 0.8°C cooler than that mean.
From December to January, average highs rise by 0.3°C to 29.6°C, and monthly rainfall falls from 5.3 mm to 1.7 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Santa Tecla in DecemberEl Salvador · 45 kmHigh 27.7°C · Low 17.6°C · 6.8 mm rain
- Apopa in DecemberEl Salvador · 45 kmHigh 31.1°C · Low 20.2°C · 6.8 mm rain
- Jutiapa in DecemberGuatemala · 49 kmHigh 27.4°C · Low 16.8°C · 4.4 mm rain
- San Salvador in DecemberEl Salvador · 52 kmHigh 29.6°C · Low 19.5°C · 6.8 mm rain
- Soyapango in DecemberEl Salvador · 55 kmHigh 29.3°C · Low 19.7°C · 6.8 mm rain
- Jalapa in DecemberGuatemala · 86 kmHigh 23.4°C · Low 13.9°C · 11 mm rain
- Chiquimula in DecemberGuatemala · 90 kmHigh 25.0°C · Low 18.5°C · 16 mm rain
- San José Pinula in DecemberGuatemala · 111 kmHigh 21.8°C · Low 11.4°C · 12 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.