Winter
Dec → Feb17 to 20°
nights 5 to 7°
- 5 rainy days · 48 mm
When is the best time to visit San Antonio?
- Jan17°not recommended
- Feb20°fair
- Mar23°recommended
- Apr27°recommended
- May30°recommended
- Jun34°fair
- Jul35°not recommended
- Aug36°not recommended
- Sep32°fair
- Oct28°recommended
- Nov22°recommended
- Dec18°fair
RecommendedFairNot recommended· afternoon temperature
The weather in San Antonio, month by month
The table of averages, month by month
| Month | High | Low | Rainfall | Rainy days | Best |
|---|---|---|---|---|---|
| January | 17° | 5° | 50 mm | 5 d | |
| February | 20° | 7° | 44 mm | 5 d | |
| March | 23° | 11° | 59 mm | 6 d | ✓ |
| April | 27° | 15° | 62 mm | 5 d | ✓ |
| May | 30° | 19° | 112 mm | 6 d | ✓ |
| June | 34° | 23° | 83 mm | 6 d | |
| July | 35° | 24° | 61 mm | 4 d | |
| August | 36° | 24° | 55 mm | 4 d | |
| September | 32° | 21° | 99 mm | 6 d | |
| October | 28° | 16° | 95 mm | 5 d | ✓ |
| November | 22° | 10° | 53 mm | 5 d | ✓ |
| December | 18° | 6° | 51 mm | 5 d |
The four seasons in San Antonio, in figures
What the 2015-2024 averages (San Antonio Airport) show, season by season, to compare at a glance instead of reading twelve rows of a table.
Spring
Mar → May23 to 30°
nights 11 to 19°
- 6 rainy days · 78 mm
Summer
Jun → Aug34 to 36°
nights 23 to 24°
- 5 rainy days · 66 mm
Autumn
Sep → Nov22 to 32°
nights 10 to 21°
- 5 rainy days · 82 mm
Book early for March to May and October to November
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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Daylight in San Antonio, month by month
The time between sunrise and sunset, from shortest to longest. Not to be confused with the sunshine hours in the table above, which count clear skies. In June there are 14h02 of daylight, in December 10h15, a difference of 3h46.
10h26Jan
11h06Feb
11h55Mar
12h51Apr
13h37May
14h02Jun
13h52Jul
13h12Aug
12h18Sep
11h24Oct
10h37Nov
10h15Dec
Calculated for the latitude of the reference point "San Antonio Airport" (29.54°). Values on the 15th of each month, local solar time.
What to do in San Antonio, month by month
What to see and do
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sightseeing & walks | ||||||||||||
| Long days |
favourablewith compromisesunfavourable
- Sightseeing & walks: January, February, March, April, May, October, November, December
- Long days: June
Grid derived from the climate averages (temperature, rainfall), not from an opinion.
Travelling off-peak
Month by month, in detail
January
Not recommended17°5° at night
- 50 mm · 5 d
Low season, lower prices
February
Fair20°7° at night
- 44 mm · 5 d
Low season, lower prices
March
Recommended23°11° at night
- 59 mm · 6 d
Busy, without the crush
April
Recommended27°15° at night
- 62 mm · 5 d
Busy, without the crush
May
Recommended30°19° at night
- 112 mm · 6 d
Busy, without the crush
June
Fair34°23° at night
- 83 mm · 6 d
Low season, lower prices
July
Not recommended35°24° at night
- 61 mm · 4 d
Low season, lower prices
August
Not recommended36°24° at night
- 55 mm · 4 d
Low season, lower prices
September
Fair32°21° at night
- 99 mm · 6 d
Low season, lower prices
October
Recommended28°16° at night
- 95 mm · 5 d
Busy, without the crush
November
Recommended22°10° at night
- 53 mm · 5 d
Busy, without the crush
December
Fair18°6° at night
- 51 mm · 5 d
Quiet, then the holidays
Read the twelve months in detail
January. Cool: 17 °C at best, 5 °C at night. Rain stays light: 50 mm over 5 days. Low season: fewer people, lower prices.
February. Mild, 20 °C in the afternoon and 7 °C early in the morning. Rain stays light: 44 mm over 5 days. Low season: fewer people, lower prices.
March. Mild, 23 °C in the afternoon and 11 °C early in the morning. Rain stays light: 59 mm over 6 days. Busy season, without the crush.
April. 27 °C in the afternoon and 15 °C at night. Rain stays light: 62 mm over 5 days. Busy season, without the crush.
May. 30 °C in the afternoon and 19 °C at night. Rain stays light: 112 mm over 6 days. Busy season, without the crush.
June. Real heat: 34 °C at the warmest of the day, 23 °C at night. Rain stays light: 83 mm over 6 days. Low season: fewer people, lower prices.
July. Real heat: 35 °C at the warmest of the day, 24 °C at night. Rain stays light: 61 mm over 4 days. Low season: fewer people, lower prices.
August. Real heat: 36 °C at the warmest of the day, 24 °C at night. Rain stays light: 55 mm over 4 days. Low season: fewer people, lower prices.
September. Real heat: 32 °C at the warmest of the day, 21 °C at night. Rain stays light: 99 mm over 6 days. Low season: fewer people, lower prices.
October. 28 °C in the afternoon and 16 °C at night. Rain stays light: 95 mm over 5 days. Busy season, without the crush.
November. Mild, 22 °C in the afternoon and 10 °C early in the morning. Rain stays light: 53 mm over 5 days. Busy season, without the crush.
December. Mild, 18 °C in the afternoon and 6 °C early in the morning. Rain stays light: 51 mm over 5 days. Quiet at the start of the month, then busier as the holidays approach.
Same season, other ideas
Their best time overlaps with this one: worth comparing before you book.
Frequently asked questions
When is the best time to visit San Antonio?
March to May and October to November: over these months, average highs range from 22 to 30 °C, with 5 days of rain a month on average (2015-2024 averages, San Antonio Airport).
Which month should you avoid in San Antonio?
July: it is the wettest of the months to avoid, with 61 mm over 4 days of rain on average over 2015-2024 at the reference point (San Antonio Airport).
What is the hottest month in San Antonio?
August, with 36 °C on average in the afternoon and 24 °C at night. 2015-2024 averages (San Antonio Airport).
What is the coldest month in San Antonio?
January, with 17 °C at best during the day and 5 °C at night. 2015-2024 averages (San Antonio Airport).
What is the driest month in San Antonio?
February: 44 mm over 5 days of rain, against 112 mm in May, the wettest month.
Does it get cold at night in San Antonio?
The gap between day and night reaches 13 °C in February: 20 °C in the afternoon, 7 °C at dawn. Pack an extra layer, even in high season.
Plan this trip
📒 The free printable San Antonio guide: itinerary, map, where to sleep→
🧭 When to visit the American West: the country overview→
🗓️ Best time to visit: all our destinations→
Compare with other destinations
Photos: DatraxMada / CC BY-SA 4.0 (Wikimedia Commons) · Michael Barera / CC BY-SA 4.0 (Wikimedia Commons) · Chris Light / CC BY-SA 4.0 (Wikimedia Commons) · Bilestone / CC BY-SA 4.0 (Wikimedia Commons) · Brodie319 / Public domain (Wikimedia Commons) · Jumpy542 / CC0 (Wikimedia Commons) · Nan Palmero from San Antonio, TX, USA / CC BY 2.0 (Wikimedia Commons) · Brownings ( talk ) ( Uploads ) / CC BY-SA 3.0 (Wikimedia Commons)