San Salvador weather in May
May in San Salvador: sweltering, soaked, with very humid — a fair time to visit.
#10 of 12 months in San Salvador · #570 of 604 destinations to visit in May · comfort 55/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
San Salvador climate normals — May
| Daytime high | 30°C / 85°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 22°C / 72°F | |
| Feels like (high) | 35°C / 95°F | |
| Rainfall | 239 mm / 9.4 in | ⛈ soaked |
| Rainy days | 25 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 21°C / 70°F | |
| Sunshine | 10.2 h/day | |
| Daylight | 12.8 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 76 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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San Salvador in May — FAQ
- Is May a good time to visit San Salvador?
- May in San Salvador: sweltering, soaked, with very humid — a fair time to visit. It ranks #10 of 12 months for San Salvador on SeasonMap's comfort score (55/100).
- What is the weather like in San Salvador in May?
- In May, San Salvador averages a daily high of 29.6°C and a low of 22.1°C, with about 239.3 mm of rain over roughly 25 rainy days.
- What is the air quality in San Salvador in May?
- San Salvador has a mean US Air Quality Index of about 76 in May.