Santiago Weather in May
In May, Santiago averages a high of 20°C (69°F) and a low of 5°C (41°F), from 34 years of daily records (1978–2025).
20°C
Average high
69°F
5°C
Average low
41°F
30°C
Record high
85°F · May 26, 2020
-6°C
Record low
21°F · May 30, 1996
What May Is Like in Santiago
- 7 of the 10 warmest Mays on record in Santiago have come since 2011.
- May 2025 was the 5th warmest May in 34 years of records, 1.6°C (2.8°F) above the long-run average.
- On average, 1.4 nights in May drop below freezing.
- The warmest May in the record was 2020; the coldest was 1993.
At least 1 mm of rain falls on 12% of May days, and the month averages 36 mm in total.
Warmest: 2020 (24.3°C)Latest: 2025 (21.4°C)10-year averageLong-run average (20.5°C)
Look Up a Day in May
See the weather in Santiago on any May date, year by year.
Source: NOAA GHCN-Daily, Arturo Merino Benitez Intl (1973–2025); Quinta Normal (2005–2025). Averages cover 1978–2025. How we compute this