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San Antonio Weather May

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Temperatures trend during May in San Antonio

See the weather trend as well as the moving average line

May weather in San Antonio day by day

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April June

Date	Weather	Temperatures	Rain	UV
May 1	Partly cloudy	31° /19°	2.2 mm	7
May 2	Patchy rain possible	29° /19°	0.7 mm	6
May 3	Cloudy	28° /19°	6.9 mm	6
May 4	Patchy rain possible	30° /18°	3.6 mm	6
May 5	Thundery outbreaks possible	30° /20°	1.9 mm	7
May 6	Patchy rain possible	32° /21°	14.2 mm	7
May 7	Patchy rain possible	33° /21°	1.2 mm	7
May 8	Moderate rain at times	34° /21°	2.3 mm	7
May 9	Moderate rain at times	31° /20°	7.2 mm	7
May 10	Patchy rain possible	29° /19°	4.5 mm	6
May 11	Patchy rain possible	30° /19°	1.5 mm	7
May 12	Moderate or heavy rain shower	32° /18°	6.3 mm	7
May 13	Moderate or heavy rain shower	32° /18°	28.9 mm	7
May 14	Moderate or heavy rain shower	34° /18°	1.6 mm	7
May 15	Moderate or heavy rain shower	33° /19°	7.2 mm	7
May 16	Moderate or heavy rain shower	30° /20°	9.7 mm	6
May 17	Mist	34° /21°	0.4 mm	7
May 18	Partly cloudy	35° /21°	0 mm	8
May 19	Patchy rain possible	33° /21°	0.1 mm	7
May 20	Moderate or heavy rain shower	34° /22°	1.9 mm	7
May 21	Moderate or heavy rain shower	31° /21°	2.5 mm	7
May 22	Partly cloudy	35° /21°	0 mm	8
May 23	Thundery outbreaks possible	36° /21°	0.6 mm	8
May 24	Partly cloudy	36° /22°	0 mm	8
May 25	Patchy rain possible	37° /22°	0.1 mm	8
May 26	Thundery outbreaks possible	35° /22°	0 mm	7
May 27	Thundery outbreaks possible	35° /22°	1.3 mm	8
May 28	Patchy rain possible	34° /22°	1.9 mm	7
May 29	Thundery outbreaks possible	32° /22°	5.9 mm	7
May 30	Thundery outbreaks possible	34° /21°	0.2 mm	7
May 31	Thundery outbreaks possible	34° /22°	0.3 mm	7
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Important Notice

Our weather forecast for San Antonio in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Antonio forecast closer to your planned date for the most up-to-date weather information.

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San Antonio in May - FAQ

What are the expected maximum and minimum temperatures in San Antonio during May?

Expect warm days with temperatures around 32°, cooling to mild conditions of 20° after sunset. Perfect for those who enjoy warm weather.

How much rainfall should be expected in San Antonio during May?

Significant rainfall exceeding 155.9 mm is expected in San Antonio during May, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in San Antonio during May?

The average wind speed in San Antonio during May is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in San Antonio

Explore the daily rainfall trends and prepare for San Antonios May weather 💧

UV exposure in San Antonio during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

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Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
					1 31°	2 29°
3 28°	4 30°	5 30°	6 32°	7 33°	8 34°	9 31°
10 29°	11 30°	12 32°	13 32°	14 34°	15 33°	16 30°
17 34°	18 35°	19 33°	20 34°	21 31°	22 35°	23 36°
24 36°	25 37°	26 35°	27 35°	28 34°	29 32°	30 34°
31 34°

Weather in San Antonio, Texas for May 2026

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