Santiago, Chile Climate & Monthly Averages
The climate of Santiago
Weather in Santiago is shaped by its semi-arid climate - expect big day-to-night temperature swings and modest rainfall. January afternoons typically reach 85°F (30°C), while July highs hover near 59°F (15°C). Annual precipitation averages 15.0 inches (382 mm) over about 41 rainy days.
Climate quick facts
- Hottest month: January - highs near 85°F (30°C)
- Coldest month: July - highs near 59°F (15°C)
- Record high: 99°F (37°C) · Record low: 15°F (-9°C) (2015–2024)
- Wettest month: June (6 rainy days) · Sunniest: December (13.5 h sun/day)
- Climate type: semi-arid - big day-to-night temperature swings and modest rainfall
Temperatures through the year
The warmest stretch of the year centers on January. Highs average 85°F (30°C) and overnight lows stay near 60°F (16°C). The coolest month is July, with typical highs of 59°F (15°C) and lows around 43°F (6°C). Based on 2015–2024 weather data, temperatures have reached as high as 99°F (37°C) and dropped as low as 15°F (-9°C).
Rain, sun and snow
June is usually the wettest month. It brings about 3.1 inches (79 mm) of rain over 6 days, while March is the driest. December brings the most sunshine, averaging 13.5 hours of sun a day. Snowfall is rare but not unheard of.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 85° | 60° | 0 | 0.3 in | 13.4 h/day | 51% |
| February | 85° | 61° | 1 | 0.2 in | 12.7 h/day | 53% |
| March | 82° | 58° | 1 | 0.1 in | 11.6 h/day | 53% |
| April | 74° | 53° | 2 | 1.3 in | 9.7 h/day | 60% |
| May | 66° | 48° | 4 | 1.4 in | 8.0 h/day | 62% |
| June | 60° | 44° | 6 | 3.1 in | 6.8 h/day | 62% |
| July | 59° | 43° | 5 | 2.2 in | 7.6 h/day | 63% |
| August | 62° | 44° | 6 | 2.6 in | 8.4 h/day | 68% |
| September | 65° | 46° | 6 | 1.6 in | 9.2 h/day | 69% |
| October | 71° | 49° | 5 | 1.4 in | 11.0 h/day | 64% |
| November | 78° | 53° | 2 | 0.5 in | 12.3 h/day | 55% |
| December | 83° | 57° | 1 | 0.3 in | 13.5 h/day | 51% |
Santiago month by month
Santiago weather in January
January brings highs around 85°F (30°C), lows near 60°F (16°C), about 0 wet days - typically the hottest month of the year in Santiago.
Santiago weather in February
February brings highs around 85°F (29°C), lows near 61°F (16°C), about 1 wet days.
Santiago weather in March
March brings highs around 82°F (28°C), lows near 58°F (15°C), about 1 wet days - typically the driest month of the year in Santiago.
Santiago weather in April
April brings highs around 74°F (23°C), lows near 53°F (12°C), about 2 wet days.
Santiago weather in May
May brings highs around 66°F (19°C), lows near 48°F (9°C), about 4 wet days.
Santiago weather in June
June brings highs around 60°F (16°C), lows near 44°F (6°C), about 6 wet days - typically the wettest month of the year in Santiago.
Santiago weather in July
July brings highs around 59°F (15°C), lows near 43°F (6°C), about 5 wet days - typically the coldest month of the year in Santiago.
Santiago weather in August
August brings highs around 62°F (16°C), lows near 44°F (7°C), about 6 wet days.
Santiago weather in September
September brings highs around 65°F (19°C), lows near 46°F (8°C), about 6 wet days.
Santiago weather in October
October brings highs around 71°F (22°C), lows near 49°F (10°C), about 5 wet days.
Santiago weather in November
November brings highs around 78°F (26°C), lows near 53°F (12°C), about 2 wet days.
Santiago weather in December
December brings highs around 83°F (28°C), lows near 57°F (14°C), about 1 wet days - typically the sunniest month of the year in Santiago.
Seasons in Santiago
Spring (September through November)
Spring in Santiago brings comfortable warmth, with daytime highs averaging 71°F (22°C) and nights around 50°F (10°C); rain falls on about 13 days over the three months.
Summer (December through February)
Summer in Santiago brings hot afternoons, with daytime highs averaging 84°F (29°C) and nights around 59°F (15°C); precipitation is infrequent.
Fall (March through May)
Fall in Santiago brings comfortable warmth, with daytime highs averaging 74°F (23°C) and nights around 53°F (12°C); precipitation is infrequent.
Winter (June through August)
Winter in Santiago is crisp but comfortable, with daytime highs averaging 60°F (16°C) and nights around 44°F (6°C); rain falls on about 18 days over the three months.
Climate questions, answered
What is the average temperature in Santiago?
Is Santiago hot in summer?
Is Santiago cold in winter?
How many rainy days does Santiago get in a year?
Best time to visit Santiago
The best time to visit Santiago is generally March to June and August to September, when temperatures are at their most comfortable before or after the peak heat. Daytime temperatures in that window typically sit near 68°F (20°C).
Pack for Santiago with light layers that can adapt to mild swings through the day. Evenings can feel noticeably cooler than afternoons - January nights average 60°F (16°C).
Santiago temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.