Last updated: August 28, 2025
In April, the average temperature in San Antonio, Uruguay is a comfortable 18°C (65°F). You can expect a minimum of 6°C (43°F) and a maximum of 34°C (93°F), making it a month of delightful contrasts. With 75 mm (3.0 in) of precipitation spread over 6 days, it's wise to carry an umbrella. Additionally, the average humidity sits at a notable 79%, ensuring the air feels pleasantly refreshing.
In April in San Antonio, the average temperature is 18°C (65°F), with maximums reaching 34°C (93°F) and minimums dropping to as low as 6°C (43°F). This makes it an ideal time for travelers to experience a comfortable climate while exploring the local attractions.
In San Antonio in April, the precipitation amount is 75 mm (3.0 in) occurring over a span of 6 days.
In San Antonio in April, humidity is 79%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm mist, making traveling slightly uncomfortable and sticky, but offering a refreshing escape when you find moments of shade or a breeze.
In San Antonio in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more 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 April’s weather to other months in San Antonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 24°C (75°F) | 69 mm (2.7 inches) | 63% | extreme |
| February Weather | 23°C (73°F) | 97 mm (3.8 inches) | 69% | extreme |
| March Weather | 21°C (70°F) | 75 mm (2.9 inches) | 73% | extreme |
| April Weather | 18°C (65°F) | 75 mm (3.0 inches) | 79% | high |
| May Weather | 14°C (58°F) | 109 mm (4.3 inches) | 82% | moderate |
| June Weather | 12°C (54°F) | 106 mm (4.2 inches) | 80% | moderate |
| July Weather | 11°C (52°F) | 101 mm (4.0 inches) | 72% | moderate |
| August Weather | 12°C (54°F) | 90 mm (3.5 inches) | 72% | high |
| September Weather | 14°C (58°F) | 86 mm (3.4 inches) | 76% | very high |
| October Weather | 16°C (61°F) | 91 mm (3.6 inches) | 71% | extreme |
| November Weather | 19°C (67°F) | 67 mm (2.6 inches) | 68% | extreme |
| December Weather | 22°C (72°F) | 65 mm (2.5 inches) | 65% | extreme |