San Antonio Weather in April
What's the weather like in San Antonio (Valparaíso) in April 2026?
The climate in San Antonio during April can be summarized as mild and dry.
April is in the fall / autumn in San Antonio and is typically the 6th warmest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 10°C (49°F) is normal.
| Daytime temperature | 18.8°C 65.8°F |
|---|---|
| Nightly temperature | 9.5°C 49°F |
| Average temperature | 14.1°C 57.4°F |
| Daily sunshine | 7.3 hrs |
| Avg rainfall | 23 mm 0.9 ins |
| Rainy days | 2 days |
| Sea temperature | 16.1°C 61°F |
| Humidity | 81% |
| Windspeed | 6.5kph 4 mph |
On average April is the 6th wettest month of the year in San Antonio with around 23mm 0.9 inches of rain making it a dry time to visit. This rainfall is typically spread over 2 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.3 hours of sunshine per day.
April temperatures in San Antonio
April rainfall
April hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Antonio in April 2025.
Other monthly averages
San Antonio weather stats
| Hottest month: | January | 23.4°C 74.1°F |
|---|---|---|
| Driest month: | February | 1mm 0ins |
| Sunniest month: | January | 11.5hrs |
| Coldest month: | July | 14.1°C 57.4°F |
| Wettest month: | July | 116mm 4.6ins |
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