Santiago, Chile Climate & Monthly Averages
Santiago has a semi-arid climate. January is the hottest month, averaging 85° by day; July is the coldest at 59°.
Sunshine is a defining feature of Santiago's climate
Santiago runs on a dry-summer rhythm: the warmest months are also the driest. March averages 3 mm (0.1 in) while the wet season peaks in June at 3.1 inches (79 mm). Highs range from 59°F (15°C) to 85°F (30°C).
How sun, temperature and rain fit together
Five of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is September through November. Warmth peaks in January: highs of 85°F (30°C), lows of 60°F (16°C). July is the coolest month, with highs of 59°F (15°C) and lows near 43°F (6°C). The gridded 2015-2024 daily record for this location tops out at 99°F (37°C) and bottoms at 15°F (-9°C) - decade extremes, not all-time station records.
5 months average under 20 mm of rain, the longest unbroken stretch running November through March.
The wettest month is June (3.1 inches (79 mm) across 6 days) and the driest March. Relative humidity averages 59% across the year, drier than about 86% of the cities we track.
More climate facts for Santiago
- Hottest month: January - highs near 85°F (30°C)
- Coldest month: July - highs near 59°F (15°C)
- Decade extremes (2015-2024): 99°F (37°C) high · 15°F (-9°C) low
- Wettest month: June (6 rainy days) · Sunniest: December (13.5 h sun/day)
- Climate type: semi-arid
- Annual swing: 12°C between the average warmest and coolest month · day to night: 12°C
- Average humidity: 59%
The most comfortable sunny-weather window
Best time to visit Santiago
Aim for March to June and August to September if you get the choice: temperatures sit either side of the peak heat rather than in it, and highs average 68°F (20°C) against roughly 4 wet days a month. For the same question asked the other way round, see where else is warm in March.
What to pack
Pack for Santiago with light clothing for the warm months. Note the gap between afternoon and night: January pairs 85°F (30°C) with 60°F (16°C).
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 85° | 60° | 0 | 0.3 in | 13.4 h/day | 14.1 h | 2% | 51% |
| February | 85° | 61° | 1 | 0.2 in | 12.7 h/day | 13.3 h | 5% | 53% |
| March | 82° | 58° | 1 | 0.1 in | 11.6 h/day | 12.4 h | 3% | 53% |
| April | 74° | 53° | 2 | 1.3 in | 9.7 h/day | 11.3 h | 7% | 60% |
| May | 66° | 48° | 4 | 1.4 in | 8.0 h/day | 10.4 h | 15% | 62% |
| June | 60° | 44° | 6 | 3.1 in | 6.8 h/day | 9.9 h | 21% | 62% |
| July | 59° | 43° | 5 | 2.2 in | 7.6 h/day | 10.1 h | 17% | 63% |
| August | 62° | 44° | 6 | 2.6 in | 8.4 h/day | 10.9 h | 19% | 68% |
| September | 65° | 46° | 6 | 1.6 in | 9.2 h/day | 11.9 h | 21% | 69% |
| October | 71° | 49° | 5 | 1.4 in | 11.0 h/day | 13.0 h | 16% | 64% |
| November | 78° | 53° | 2 | 0.5 in | 12.3 h/day | 13.9 h | 7% | 55% |
| December | 83° | 57° | 1 | 0.3 in | 13.5 h/day | 14.4 h | 2% | 51% |
Santiago month by month
Each card shows the average high and low. The bar places that month between Santiago's coldest night and warmest afternoon.
January
- Rain
- 0 days
- Sunshine
- 13.4 h
- Daylight
- 14.1 h
February
- Rain
- 1 day
- Sunshine
- 12.7 h
- Daylight
- 13.3 h
March
- Rain
- 1 day
- Sunshine
- 11.6 h
- Daylight
- 12.4 h
April
- Rain
- 2 days
- Sunshine
- 9.7 h
- Daylight
- 11.3 h
May
- Rain
- 4 days
- Sunshine
- 8.0 h
- Daylight
- 10.4 h
June
- Rain
- 6 days
- Sunshine
- 6.8 h
- Daylight
- 9.9 h
July
- Rain
- 5 days
- Sunshine
- 7.6 h
- Daylight
- 10.1 h
August
- Rain
- 6 days
- Sunshine
- 8.4 h
- Daylight
- 10.9 h
September
- Rain
- 6 days
- Sunshine
- 9.2 h
- Daylight
- 11.9 h
October
- Rain
- 5 days
- Sunshine
- 11.0 h
- Daylight
- 13.0 h
November
- Rain
- 2 days
- Sunshine
- 12.3 h
- Daylight
- 13.9 h
December
- Rain
- 1 day
- Sunshine
- 13.5 h
- Daylight
- 14.4 h
Looking for warmer alternatives? Browse warm places by month, or compare Santiago's coolest part of the year: July, June, August.
Seasonal weather under Santiago's sunnier skies
Spring (September through November)
Through spring, Santiago is mild and warm: 71°F (22°C) by day, 50°F (10°C) after dark, and rain comes on about 13 days over the three months. Daylight is generous - around 10.8 hours of sun a day.
Summer (December through February)
Summer brings hot afternoons here - highs near 84°F (29°C), nights near 59°F (15°C), and precipitation is sparse, near 20 mm (0.8 in) for the season. Daylight is generous - around 13.2 hours of sun a day.
Fall (March through May)
Fall in Santiago settles into easy warmth, with daytime highs averaging 74°F (23°C) and nights around 53°F (12°C); precipitation is sparse, near 2.8 inches (72 mm) for the season.
Winter (June through August)
Through winter, Santiago runs cool rather than cold: 60°F (16°C) by day, 44°F (6°C) after dark, and rain comes on about 18 days over the three months.
How unusual is Santiago?
- Rain or snow reaches the ground on 41 days a year - fewer wet days than all but 6% of the 3496 cities we track.
- Annual precipitation is 15.0 inches (382 mm) - drier than all but 11% of the 3496 cities we track.
- Afternoons run 12°C above the following night - a bigger day-to-night gap than 88% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.
Santiago temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.