San Salvador weather in December
December in San Salvador: hot, dry, with clean air — an excellent time to visit.
#3 of 12 months in San Salvador · #99 of 604 destinations to visit in December · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
San Salvador climate normals — December
| Daytime high | 30°C / 86°F | 🥵 hot |
|---|---|---|
| Nighttime low | 20°C / 68°F | |
| Feels like (high) | 32°C / 90°F | |
| Rainfall | 5 mm / 0.2 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 67% | 💧 humid |
| Dew point | 17°C / 63°F | |
| Sunshine | 10.3 h/day | |
| Daylight | 11.3 h | |
| Wind | 12 km/h / 7 mph | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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San Salvador in December — FAQ
- Is December a good time to visit San Salvador?
- December in San Salvador: hot, dry, with clean air — an excellent time to visit. It ranks #3 of 12 months for San Salvador on SeasonMap's comfort score (84/100).
- What is the weather like in San Salvador in December?
- In December, San Salvador averages a daily high of 29.8°C and a low of 19.9°C, with about 4.9 mm of rain over roughly 1.2 rainy days.
- What is the air quality in San Salvador in December?
- San Salvador has a mean US Air Quality Index of about 37 in December.