Last updated: June 24, 2025
In June, the average temperature in San Antonio, United States reaches a warm 27°C (81°F). However, temperatures can vary significantly, with a minimum of 20°C (67°F) and highs peaking at 36°C (97°F). Visitors should also prepare for some rain, as 223 mm (8.8 in) of precipitation typically falls over 22 days. With an average humidity of 75%, it’s a month that blends warmth with a touch of tropical charm.
In June in San Antonio, the average temperature is 27°C (81°F). Maximums can reach 36°C (97°F), and minimums can be as low as 20°C (67°F). Overall, it's a warm and pleasant time for travelers, perfect for exploring outdoor attractions and enjoying the local culture.
In San Antonio in June, the total precipitation amount is 223 mm (8.8 in), spread over the course of 22 days.
In San Antonio in June, humidity is 75%. With an average temperature of 27°C (81°F), this humidity feels like a blanket of warmth enveloping you, making outdoor activities sticky and potentially uncomfortable for traveling.
In San Antonio in June, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. 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 | 16°C (60°F) | 43 mm (1.7 inches) | 83% | high |
| February Weather | 19°C (66°F) | 69 mm (2.7 inches) | 80% | very high |
| March Weather | 20°C (68°F) | 20 mm (0.8 inches) | 75% | very high |
| April Weather | 23°C (73°F) | 77 mm (3.0 inches) | 70% | extreme |
| May Weather | 25°C (78°F) | 123 mm (4.8 inches) | 68% | extreme |
| June Weather | 27°C (81°F) | 223 mm (8.8 inches) | 75% | extreme |
| July Weather | 27°C (81°F) | 276 mm (10.8 inches) | 79% | extreme |
| August Weather | 28°C (82°F) | 247 mm (9.7 inches) | 81% | extreme |
| September Weather | 27°C (81°F) | 189 mm (7.4 inches) | 83% | extreme |
| October Weather | 25°C (77°F) | 82 mm (3.2 inches) | 81% | very high |
| November Weather | 20°C (68°F) | 49 mm (1.9 inches) | 82% | high |
| December Weather | 17°C (64°F) | 70 mm (2.8 inches) | 84% | moderate |