Last updated: August 31, 2025
In July, the average temperature in San Antonio, Puerto Rico is a warm 27°C (81°F), with daily highs reaching up to 31°C (88°F) and lows dropping to 24°C (76°F). Visitors can expect about 91 mm (3.6 in) of precipitation spread over 18 days, resulting in an average humidity of 80%. Whether you're planning outdoor adventures or cozy indoor days, this climate creates the perfect backdrop for your travels!
In July 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 July, the precipitation amount is 91 mm (3.6 in) spread over 18 days.
In San Antonio in July humidity is 80%. With an average temperature of 27°C (81°F), this humidity feels like a warm, enveloping blanket that clings to your skin, making travel tiring as sweat beads form quickly and the air feels thick and heavy.
In San Antonio in July, 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 July’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 |