Last updated: August 31, 2025
In San Antonio, Puerto Rico, the average temperature in June reaches a warm 27°C (81°F), perfect for enjoying the outdoors. You can expect temperatures to dip to a minimum of 24°C (76°F) and peak at a balmy 31°C (88°F). However, be prepared for some rain, as 85 mm (3.3 in) of precipitation may fall over 17 days. With an average humidity level of 77%, it's advisable to stay hydrated and cherish those moments in the sun!
In June in San Antonio, the average temperature is 27°C (81°F), with a maximum that can reach 31°C (88°F) and a minimum that can be as low as 24°C (76°F). This mild and pleasant climate makes San Antonio an ideal destination for travelers seeking comfort and warmth during this time of year.
In San Antonio in June, the precipitation amount is 85 mm (3.3 in), occurring over the course of 17 days.
In San Antonio in June, humidity is 77%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket, making travel feel sticky and heavy, as sweat clings to the skin and the air becomes thick, causing you to long for refreshing breezes and cool shade.
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 | 25°C (77°F) | 34 mm (1.3 inches) | 76% | very high |
| February Weather | 25°C (76°F) | 39 mm (1.5 inches) | 75% | extreme |
| March Weather | 25°C (76°F) | 72 mm (2.8 inches) | 74% | extreme |
| April Weather | 25°C (78°F) | 66 mm (2.6 inches) | 75% | extreme |
| May Weather | 26°C (79°F) | 97 mm (3.8 inches) | 75% | extreme |
| June Weather | 27°C (81°F) | 85 mm (3.3 inches) | 77% | extreme |
| July Weather | 27°C (81°F) | 91 mm (3.6 inches) | 80% | extreme |
| August Weather | 27°C (82°F) | 97 mm (3.8 inches) | 80% | extreme |
| September Weather | 27°C (81°F) | 188 mm (7.4 inches) | 79% | extreme |
| October Weather | 27°C (81°F) | 127 mm (5.0 inches) | 78% | extreme |
| November Weather | 26°C (79°F) | 99 mm (3.9 inches) | 78% | very high |
| December Weather | 25°C (78°F) | 43 mm (1.7 inches) | 76% | very high |