Santiago climate
Santiago (Chile) has a hot semi-arid climate (Köppen BSh). The average temperature over the year is 19 °C67 °F, and about 274 mm11 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Santiago climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3492 | 1865 | 2679 | 80.3 |
| Feb | 3290 | 1864 | 2577 | 80.3 |
| Mar | 3187 | 1661 | 2374 | 100.4 |
| Apr | 2780 | 1356 | 2068 | 120.5 |
| May | 2373 | 1050 | 1662 | 441.7 |
| Jun | 1966 | 745 | 1356 | 632.5 |
| Jul | 1865 | 643 | 1254 | 471.9 |
| Aug | 2068 | 745 | 1457 | 401.6 |
| Sep | 2373 | 948 | 1660 | 150.6 |
| Oct | 2679 | 1152 | 1865 | 120.5 |
| Nov | 3086 | 1457 | 2271 | 90.3 |
| Dec | 3290 | 1662 | 2476 | 70.3 |
| Year | 3492 | 643 | 1967 | 27411 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 31% | 32% | 8.8 | 14:08 |
| Feb | 33% | 31% | 7.9 | 13:20 |
| Mar | 31% | 36% | 6.5 | 12:23 |
| Apr | 33% | 52% | 4.5 | 11:18 |
| May | 40% | 70% | 2.9 | 10:25 |
| Jun | 49% | 74% | 2.1 | 9:57 |
| Jul | 53% | 74% | 2.3 | 10:08 |
| Aug | 52% | 72% | 3.1 | 10:54 |
| Sep | 49% | 68% | 4.5 | 11:56 |
| Oct | 42% | 64% | 6.0 | 12:59 |
| Nov | 34% | 48% | 7.7 | 13:55 |
| Dec | 30% | 37% | 8.8 | 14:22 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Santiago is like
The warmest month is January, with an average high of 34 °C92 °F and a low of 18 °C65 °F. The coldest is July, when highs average 18 °C65 °F and lows 6 °C43 °F. There is a clear seasonal cycle, with 13.6 °C24.5 °F between the average temperature of the warmest and the coolest month.
It is dry, with about 274 mm11 in of precipitation per year. The wettest three-month stretch is May–July, which brings 56% of the annual total. Months with less than 20 mm0.8 in on average: September–April. The wettest month is June (63 mm2.5 in), the driest is December (7 mm0.3 in).
Relative humidity ranges from 30% in December to 53% in July. The clearest skies (lowest average cloud amount, 31%) are typical of February. Average wind speed near the ground ranges from 5 km/h (3 mph) in July to 8 km/h (5 mph) in January. Daylight lasts from about 9.9 hours in June to 14.4 hours in December.
Best time to visit Santiago
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April–November: average highs of 18 °C65 °F to 30 °C86 °F with 9 mm0.3 in to 63 mm2.5 in of precipitation per month.
The most challenging month is January, which is hot, with average highs of 34 °C92 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
Santiago weather by month
- January34 °C92 °F / 18 °C65 °F
- February32 °C90 °F / 18 °C64 °F
- March31 °C87 °F / 16 °C61 °F
- April27 °C80 °F / 13 °C56 °F
- May23 °C73 °F / 10 °C50 °F
- June19 °C66 °F / 7 °C45 °F
- July18 °C65 °F / 6 °C43 °F
- August20 °C68 °F / 7 °C45 °F
- September23 °C73 °F / 9 °C48 °F
- October26 °C79 °F / 11 °C52 °F
- November30 °C86 °F / 14 °C57 °F
- December32 °C90 °F / 16 °C62 °F
What to pack for Santiago
- Summer (December–February) — highs 3290 to 34 °C92 °F, lows 1662 to 18 °C65 °F, about 8 mm0.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
- Autumn (March–May) — highs 2373 to 31 °C87 °F, lows 1050 to 16 °C61 °F, about 22 mm0.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Winter (June–August) — highs 1865 to 20 °C68 °F, lows 643 to 7 °C45 °F, about 50 mm2.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Spring (September–November) — highs 2373 to 30 °C86 °F, lows 948 to 14 °C57 °F, about 12 mm0.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Santiago compares
Of the 25 places in Chile covered by World Climates, Santiago is the 5th warmest by annual mean temperature and the 16th wettest by annual precipitation. See all of them on the Chile climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Escondido (United States, BSh), San Diego (United States, BSh) and El Cajon (United States, BSh).
The same NASA POWER grid cell also contains Puente Alto (pop. 568,106), Maipú (pop. 503,635), San Bernardo (pop. 249,858), Peñalolén (pop. 241,599), Quilicura (pop. 210,410), La Pintana (pop. 201,178), Renca (pop. 147,151), Lo Prado (pop. 104,316) and Lampa (pop. 102,234). Their long-term averages in this dataset are essentially the same as for Santiago, so they do not have separate pages.
Nearby places
- Colina 28 km · 20 °C68 °F · 256 mm10 in
- Rancagua 80 km · 19 °C66 °F · 301 mm12 in
- Viña del Mar 97 km · 18 °C65 °F · 287 mm11 in
- Valparaíso 103 km · 14 °C58 °F · 238 mm9.4 in
- Curicó 178 km · 17 °C63 °F · 351 mm14 in
- Mendoza 179 km · 17 °C63 °F · 290 mm11 in
- Talca 237 km · 15 °C60 °F · 505 mm20 in
- San Rafael 249 km · 17 °C62 °F · 410 mm16 in
Frequently asked questions
What is the warmest month in Santiago?
January is the warmest month in Santiago, with an average high of 34 °C (92 °F) and an average low of 18 °C (65 °F).
What is the coldest month in Santiago?
July is the coldest month, with an average high of 18 °C (65 °F) and an average low of 6 °C (43 °F).
When does it rain the most in Santiago?
June is the wettest month with about 63 mm (2.5 in) of precipitation; December is the driest with about 7 mm (0.3 in).
What is the best time to visit Santiago?
Judging by long-term averages, the most comfortable months are April–November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 1,154 m, while Santiago lies at about 556 m. Temperatures on this page were therefore adjusted by +3.9 °C7 °F using the standard lapse rate of 6.5 °C per 1,000 m.