Santiago weather in January
In January, Santiago has an average high of 34 °C92 °F and an average low of 18 °C65 °F, with about 8 mm0.3 in of precipitation. January is the warmest month of the year and ranks 11th for precipitation.
How January compares with other months
Compared with December, January is 1.5 °C2.8 °F warmer on average. Compared with February, January is 0.8 °C1.5 °F warmer on average. Daylight lasts about 14.1 hours around the middle of the month. Average relative humidity is 31% and the average cloud amount 32%.
Is January a good time to visit Santiago?
January is not among the most comfortable months by our comfort score: it is hot (average high 34 °C92 °F). The most comfortable months in Santiago are April–November.
What to wear in January
For Santiago in January, pack very light, breathable clothing, a sun hat and plenty of water.
January in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Santiago | 3492 | 1865 | 80.3 |
| Colina | 3392 | 1967 | 80.3 |
| Rancagua | 3493 | 1966 | 90.4 |
| Viña del Mar | 3187 | 1661 | 10.1 |
| Valparaíso | 1966 | 1660 | 10.1 |
| Curicó | 3492 | 1660 | 60.2 |
| Mendoza | 3392 | 1965 | 471.9 |
| Talca | 3391 | 1356 | 80.3 |
| San Rafael | 3392 | 1864 | 612.4 |
Nearby places that are more than 1 °C1.8 °F cooler: Viña del Mar, Valparaíso, Curicó and Talca.
Other months in Santiago
- 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
Frequently asked questions
How warm is Santiago in January?
In January the average high in Santiago is 34 °C (92 °F) and the average low is 18 °C (65 °F).
Does it rain a lot in Santiago in January?
On average about 8 mm (0.3 in) of precipitation falls in January; it ranks 11th of the 12 months.
Is January the warmest month in Santiago?
Yes. January is the warmest month in Santiago. The coldest month is July, with an average low of 6 °C (43 °F).
How long is the day in Santiago in January?
In the middle of January the day in Santiago lasts about 14.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Santiago in January?
The average relative humidity in January is about 31%. This is a long-term average for the whole day.
How cloudy is Santiago in January?
On average about 32% of the sky is covered by cloud in January. This is the mean cloud amount from satellite data, not the number of sunny days.
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.