San Antonio weather
Best months for weather: Dec–Mar. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for San Antonio, Valparaiso, Chile.
Best Time to Visit
Peak season Dec–MarOff season May–Aug
San Antonio weather by month
When is the best time to visit San Antonio?
Based on weather alone, the best time to visit San Antonio is Dec–Mar, according to NASA's 2001–2025 climate averages. May–Aug tends to be the least pleasant. Average highs run from 13°C (56°F) in July to 19°C (67°F) in February.
What is the rainiest month in San Antonio?
June is the wettest month, with about 58 mm (2.3 in) of rain on average. February is the driest, with about 2 mm (0.1 in).
What is the hottest month in San Antonio?
February is the warmest, with average highs of 19°C (67°F) and lows of 15°C (59°F). July is the coolest, with highs of 13°C (56°F) and lows of 10°C (49°F).
Does San Antonio have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is June at about 58 mm (2.3 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months