San Antonio Weather in January

January in San Antonio typically sees daytime highs of 19°C (66°F) and nighttime lows of 11°C (52°F). January falls within the rainy season, so heavy rainfall is to be expected.

Rainfall in San Antonio in January

San Antonio is in the rainy season in January, with rain on around 11 days and an average of 318 mm (13 in). The rain this month falls heavily when it arrives, so waterproofs are worth keeping handy.

Temperature in San Antonio in January

January in San Antonio sees highs of 19°C (66°F) and lows of 11°C (52°F) overnight. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in San Antonio in January

Enjoy a sunny month with about 197 hours of sunshine, even though this month falls in the wet season. There is still enough sun to enjoy the outdoors.

Wind Speed in San Antonio in January

January sees wind speeds averaging (). You'll typically experience very calm weather with minimal air movement throughout the month. Keep in mind this is an average. While most days are nearly windless, occasional windier days may still occur.

January in San Antonio can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.