Santiago weather in May
May in Santiago: nice, dry, with poor air quality — a great time to visit.
#9 of 12 months in Santiago · #398 of 604 destinations to visit in May · comfort 77/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Santiago climate normals — May
| Daytime high | 19°C / 66°F | 😎 nice |
|---|---|---|
| Nighttime low | 6°C / 43°F | |
| Feels like (high) | 17°C / 63°F | |
| Rainfall | 18 mm / 0.7 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 60% | 💧 humid |
| Dew point | 4°C / 39°F | |
| Sunshine | 8.3 h/day | |
| Daylight | 10.4 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 125 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Santiago in May — FAQ
- Is May a good time to visit Santiago?
- May in Santiago: nice, dry, with poor air quality — a great time to visit. It ranks #9 of 12 months for Santiago on SeasonMap's comfort score (77/100).
- What is the weather like in Santiago in May?
- In May, Santiago averages a daily high of 18.9°C and a low of 6.3°C, with about 17.5 mm of rain over roughly 3.2 rainy days.
- What is the air quality in Santiago in May?
- Santiago has a mean US Air Quality Index of about 125 in May.