Last updated: August 22, 2025
In April, the average temperature in San Antonio, Argentina hovers around 16°C (61°F), with minimums dropping to 6°C (42°F) and maximums reaching up to 26°C (80°F). Expect around 267 mm (10.5 in) of precipitation spread over 23 days, accompanied by a high average humidity of 85%. Stay prepared for a mix of mild temperatures and frequent showers!
In April in San Antonio, the average temperature is 16°C (61°F). Maximums can reach 26°C (80°F), while minimums can drop as low as 6°C (42°F). This pleasant climate makes San Antonio an ideal destination for travelers seeking mild weather and outdoor adventures.
In San Antonio in April, the total precipitation amount is 267 mm (10.5 in), which falls over a span of 23 days.
In San Antonio in April, humidity is 85%. With an average temperature of 16°C (61°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities feel sticky and the air heavy, which can be challenging for traveling and exploring the area comfortably.
In San Antonio in April, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, 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 | 21°C (69°F) | 223 mm (8.8 inches) | 84% | extreme |
| February Weather | 19°C (67°F) | 237 mm (9.3 inches) | 87% | extreme |
| March Weather | 18°C (65°F) | 282 mm (11.1 inches) | 88% | extreme |
| April Weather | 16°C (61°F) | 267 mm (10.5 inches) | 85% | extreme |
| May Weather | 13°C (56°F) | 155 mm (6.1 inches) | 74% | very high |
| June Weather | 11°C (52°F) | 55 mm (2.2 inches) | 56% | high |
| July Weather | 11°C (52°F) | 45 mm (1.8 inches) | 47% | high |
| August Weather | 12°C (55°F) | 52 mm (2.1 inches) | 44% | very high |
| September Weather | 15°C (60°F) | 85 mm (3.4 inches) | 57% | extreme |
| October Weather | 18°C (64°F) | 201 mm (7.9 inches) | 55% | extreme |
| November Weather | 19°C (66°F) | 241 mm (9.5 inches) | 70% | extreme |
| December Weather | 20°C (68°F) | 272 mm (10.7 inches) | 77% | extreme |