Last updated: August 27, 2025
The average temperature in San Antonio, Mexico during June is a warm 26°C (79°F), with minimums dipping to 18°C (66°F) and maximums soaring to 37°C (99°F). You'll likely experience 195 mm (7.7 in) of precipitation over approximately 20 days, while the average humidity levels sit comfortably at 79%. Enjoy your stay and be prepared for varying weather conditions!
In June in San Antonio, the average temperature is 26°C (79°F). The maximum can reach 37°C (99°F), while the minimum can be as low as 18°C (66°F). Overall, this makes San Antonio an ideal destination for travelers looking to enjoy warm and pleasant weather.
In San Antonio in June, the precipitation amount is 195 mm (7.7 in) spread over 20 days.
In San Antonio in June humidity is 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.
In San Antonio in June, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Antonio.
UV Risk Categories
Weather in San Antonio varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in San Antonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 17°C (63°F) | 57 mm (2.3 inches) | 88% | high |
| February Weather | 19°C (66°F) | 51 mm (2.0 inches) | 86% | very high |
| March Weather | 21°C (71°F) | 66 mm (2.6 inches) | 83% | extreme |
| April Weather | 24°C (76°F) | 83 mm (3.3 inches) | 80% | extreme |
| May Weather | 26°C (80°F) | 147 mm (5.8 inches) | 82% | extreme |
| June Weather | 26°C (79°F) | 195 mm (7.7 inches) | 79% | extreme |
| July Weather | 26°C (79°F) | 138 mm (5.4 inches) | 72% | extreme |
| August Weather | 27°C (80°F) | 121 mm (4.8 inches) | 74% | extreme |
| September Weather | 26°C (78°F) | 226 mm (8.9 inches) | 84% | extreme |
| October Weather | 23°C (74°F) | 275 mm (10.8 inches) | 92% | extreme |
| November Weather | 20°C (68°F) | 73 mm (2.9 inches) | 91% | very high |
| December Weather | 18°C (64°F) | 37 mm (1.5 inches) | 91% | high |