San Antonio
Texas, USA
Long-term weather forecast
Long-term weather forecast
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April weather forecast and Climate
San Antonio, TX

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Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront
Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront
April is around mid-spring in San Antonio with warm weather in the average range of 58°F (14.4°C) to 81°F (27.2°C). Although the temperatures rise to 85°F (29.4°C) for some days in the month, there are few over 90°F (32.2°C) and none touch 100°F (37.8°C). Nights are comfortably warm, and April rarely has freezing nights.
The smell of flowers and freshwater is pleasant in the backdrop of mostly cloudy skies. The daily sunshine lasts for around 12.5 hours in April, and the occasional rain showers bring the temperatures down to the joy of the tourists and locals alike.
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  • The average high temperature in April: 27°C

Warmest months (with the highest average high temperature) are July and August (35°C).
The month with the lowest average high temperature is January (16°C).

  • The average low temperature in April: 15°C

Months with the highest average low temperature are July and August (23°C).
The coldest month (with the lowest average low temperature) is January (3°C).

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  • The average rainfall in April: 59mm

The wettest month (with the highest rainfall) is May (94mm).
The driest month (with the lowest rainfall) is March (37mm).

  • The average rainfall days in April: 7 days

The month with the highest number of rainy days is May (8 days).
Months with the lowest number of rainy days are July and August (5 days).

  • The average daylight in April: 13h

Months with the longest days are May, June and July (Average daylight: 14h).
The month with shortest days is December (Average daylight: 10h).

  • The average sunshine in April: 7h

The month with most sunshine is July (Average sunshine: 10h).
Months with least sunshine are January and December (Average sunshine: 5).

  • The average UV index in April: 10

Months with the highest UV index are May, June, July and August (UV index 11).
Months with the lowest UV index are January and December (UV index 4).

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