Santiago has a Mediterranean climate, classified as Csa in the Köppen system. The warmest month is January with an average high of 28°C, while the coldest month is July with lows dropping to 4°C. The annual temperature range of 24°C reflects moderate seasonal variation.
The driest month is December with only 1 rain days and 7mm of precipitation. For travellers, December through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 70% to 70% throughout the year.
Best Time to Visit Santiago
Based on temperature and rainfall data, the best months to visit Santiago are January, February, March. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
In January, Santiago experiences average highs of 28°C (82°F) and lows of 17°C (63°F). Expect around 1 rainy days and 14 hours of sunshine per day, with humidity averaging 70%. The 11°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 9, so sun protection is advisable on clear days.
Santiago typically sees 1 rainy days in January, with total precipitation of around 3mm. This makes January one of the drier months of the year, and a reliable window for outdoor sightseeing and day trips. Rain showers tend to be brief when they do occur. For context, the driest month in Santiago typically sees 4-6 fewer rain days than January.
Pack light layers, a light jacket for evenings, comfortable walking shoes, and sunscreen for Santiago in January. Daytime temperatures of 28°C are pleasant, but the evening drop to 17°C means a jacket is essential if you plan to be out after dark. Rain is infrequent with only 1 wet days, so a light rain layer is optional. Comfortable walking shoes are a priority given the amount of ground most visitors cover.
Yes, January is an excellent time to visit Santiago. With 14 daily sunshine hours and only 1 rainy days, conditions are ideal for sightseeing and outdoor activities. Temperatures averaging 28°C during the day are comfortable for long walks and outdoor dining. This is peak travel season, so booking accommodation in advance and arriving at popular attractions early in the morning helps avoid the busiest periods.
The average high temperature in Santiago in January is 28°C (82°F), and the average low is 17°C (63°F). The mean daily temperature is approximately 23°C (73°F). The day-to-night range of 11°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Santiago is generally January. January offers the most sunshine at 14 hours per day and only 1 rainy days. Average temperatures reach 28°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around January gives you the best chance of dry, bright weather.
January is shoulder or low season in Santiago, meaning fewer tourists and generally lower prices than peak months. With 14 sunshine hours and 1 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In January, Santiago suits a range of activities thanks to mild temperatures around 28°C. With few rainy days, outdoor activities are highly recommended. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 14 hours of sunshine, parks and waterfront walks are particularly enjoyable.