AI-generatedSan Antonio at a glance
- Best time
- Oct – Apr
- Warmest month
- Aug · 35°
- Sunshine a year
- 2,330 h
- Rain a year
- 729 mm
- Climate
- Subtropical
- Time zone
- UTC−6 / UTC−5
- Elevation
- 198 m
Climate in San Antonio
San Antonio has a subtropical climate with warm summers and mild winters. August is the warmest month with average highs of 35 °C, while January is the coolest at 17 °C. With around 2,330 hours of sunshine a year, San Antonio is sunny; August is the sunniest month with 8.7 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Excellent
Best time to visit: October – April
October is the peak of the hurricane season
Good forSightseeing & walks
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 18°
- Midday, 13:00: about 27°
- Afternoon, 16:00: about 27°
- Evening, 20:00: about 23°
- Night, 23:00: about 21°
07:3419:05
Pleasant evenings; a light layer can help.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:20–08:06 · evening 18:33–19:19
- Blue hour
- Morning 07:10–07:20 · evening 19:19–19:29
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in San Antonio in October?
In October, San Antonio is hot: daytime highs average 28 °C, and nights cool down to about 18 °C. Expect around 6 hours of sunshine a day. Rain falls on about 7 days, adding up to 74 mm. On about 10 days the thermometer climbs to 30 °C or more. All in all, October is an excellent month for a holiday in San Antonio.
More details for October
- Daylight
- 11 h 30 min07:34 – 19:05
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 10 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 40 %on averageAll months
- Hot days
- 10 days30 °C or moreAll months
- Time zone
- UTC−5America/Chicago
How the score comes together
- Temperatureweight 50 %92 %
- Sunshineweight 20 %52 %
- Few rainy daysweight 30 %80 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
Sunshine hours in San Antonio
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 6.1 of 11.5 hours of daylight in San Antonio, 53 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in San Antonio
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 7 · highSeek shade around midday; sunscreen SPF 30+, hat and sunglasses.
The sun is strongest in June (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 20 min
- Fair skin
- about 25 min
- Light brown skin
- about 35 min
- Olive skin
- about 45 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in San Antonio: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, San Antonio has about 7 rainy days with 74 mm of rain in total.
Wind and clouds in San Antonio
How breezy and how cloudy San Antonio is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in San Antonio typically peaks at 17 km/h during the day: Beaufort 3, light breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 40 % of the sky over San Antonio: mostly sunny, with about 6.1 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in San Antonio
How often the day gets hot in San Antonio (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, San Antonio has about 10 hot days, with an average daytime high of 28 °C: some hot or muggy days. Single hot or muggy days are possible; a hat and water bottle are enough.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in San Antonio
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (10+ muggy days)
PleasantOctober: nights around 18°. Ideal for sleeping, often with the window open. Muggy on about 10 days (dew point 18 °C or more).
The coolest nights are in January (7°), the warmest in August (25°). Tropical nights of 20 °C and more are the rule from May to September; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in April and in October. Nights fall below 8 °C on average in January, so the room should be heated. It is muggy (dew point 18 °C or more) on about 155 days a year, mostly from May to October.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 77 | 17° | 7° | 5.2 h | 6 | 49 |
| FebruaryFeb | 81 | 19° | 8° | 5.1 h | 7 | 46 |
| MarchMar | 78 | 23° | 12° | 5.3 h | 9 | 67 |
| AprilApr | 82 | 27° | 16° | 6.2 h | 8 | 68 |
| MayMay | 58 | 30° | 20° | 6.3 h | 10 | 88 |
| JuneJun | 49 | 33° | 23° | 7.9 h | 7 | 58 |
| JulyJul | 46 | 35° | 24° | 8.6 h | 7 | 59 |
| AugustAug | 45 | 35° | 25° | 8.7 h | 6 | 48 |
| SeptemberSep | 55 | 32° | 22° | 7.0 h | 7 | 70 |
| OctoberOct | 81 | 28° | 18° | 6.1 h | 7 | 74 |
| NovemberNov | 82 | 22° | 12° | 5.1 h | 7 | 61 |
| DecemberDec | 80 | 18° | 8° | 4.8 h | 6 | 42 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
29.42° N, 98.49° W · 198 m · America/Chicago
Best time to visit San Antonio
The best time to visit San Antonio is from October to April. For sightseeing, day trips and hiking, conditions are most comfortable from October to April. From June to August it can get very hot, with highs of up to 35 °C. The wettest month is May with 88 mm of precipitation.
San Antonio through the seasons
How the weather changes over the seasons, with averages for each.
San Antonio in spring
Mar – May
Good
- 23–30 °C by day
- 6 h of sun a day
- 26 rainy days in all
San Antonio in summer
Jun – Aug
Fair
- 33–35 °C by day
- 8 h of sun a day
- 20 rainy days in all
San Antonio in autumn
Sep – Nov
Good
- 22–32 °C by day
- 6 h of sun a day
- 21 rainy days in all
San Antonio in winter
Dec – Feb
Good
- 17–19 °C by day
- 5 h of sun a day
- 19 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in San Antonio for you.
Your best months: March, November
Based on the climate averages; tap a month to see its details.
Compare two months in San Antonio
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
October and April bring similar holiday weather to San Antonio (score 81 and 82). In April, days are 1 °C cooler than in October. April has one more rainy day.
| Month | October | April |
|---|---|---|
| Weather score | 81 | 82 |
| Day high | 28° | 27° |
| Night low | 18° | 16° |
| Sunshine | 6.1 h | 6.2 h |
| Rainy days | 7better | 8 |
| Rainfall | 74 mm | 68 mm |
| Muggy days | 10 | 9better |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Oct – Apr
15–28 °C and not too much rain
Peak heat
Jun – Aug
Highs of 33 °C or more
San Antonio month by month
The typical weather for every month at a glance.
77January17° · 5 h
In January, San Antonio is mild: daytime highs average 17 °C, and nights cool down to about 7 °C. Expect around 5 hours of sunshine a day. Rain falls on about 6 days, adding up to 49 mm. All in all, January is a good month for a holiday in San Antonio.
San Antonio in January81February19° · 5 h
In February, San Antonio is mild: daytime highs average 19 °C, and nights cool down to about 8 °C. Expect around 5 hours of sunshine a day. Rain falls on about 7 days, adding up to 46 mm. All in all, February is an excellent month for a holiday in San Antonio.
San Antonio in February78March23° · 5 h
In March, San Antonio is warm: daytime highs average 23 °C, and nights cool down to about 12 °C. Expect around 5 hours of sunshine a day. Rain falls on about 9 days, adding up to 67 mm. All in all, March is a good month for a holiday in San Antonio.
San Antonio in March82April27° · 6 h
In April, San Antonio is warm: daytime highs average 27 °C, and nights cool down to about 16 °C. Expect around 6 hours of sunshine a day. Rain falls on about 8 days, adding up to 68 mm. On about 6 days the thermometer climbs to 30 °C or more. All in all, April is an excellent month for a holiday in San Antonio.
San Antonio in April58May30° · 6 h
In May, San Antonio is hot: daytime highs average 30 °C, and even at night it stays warm at around 20 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 88 mm in total. On about 16 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is a so-so month for a holiday in San Antonio.
San Antonio in May49June33° · 8 h
In June, San Antonio is very hot: daytime highs average 33 °C, and even at night it stays warm at around 23 °C. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 58 mm. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is a so-so month for a holiday in San Antonio.
San Antonio in June46July35° · 9 h
In July, San Antonio is very hot: daytime highs average 35 °C, and even at night it stays warm at around 24 °C. The sun shines for around 9 hours a day. Rain falls on about 7 days, adding up to 59 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is a so-so month for a holiday in San Antonio.
San Antonio in July45August35° · 9 h
In August, San Antonio is very hot: daytime highs average 35 °C, and even at night it stays warm at around 25 °C. The sun shines for around 9 hours a day. Rain falls on about 6 days, adding up to 48 mm. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a so-so month for a holiday in San Antonio.
San Antonio in August55September32° · 7 h
In September, San Antonio is hot: daytime highs average 32 °C, and even at night it stays warm at around 22 °C. The sun shines for around 7 hours a day. Rain falls on about 7 days, adding up to 70 mm. On about 22 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a so-so month for a holiday in San Antonio.
San Antonio in September81October28° · 6 h
In October, San Antonio is hot: daytime highs average 28 °C, and nights cool down to about 18 °C. Expect around 6 hours of sunshine a day. Rain falls on about 7 days, adding up to 74 mm. On about 10 days the thermometer climbs to 30 °C or more. All in all, October is an excellent month for a holiday in San Antonio.
San Antonio in October82November22° · 5 h
In November, San Antonio is warm: daytime highs average 22 °C, and nights cool down to about 12 °C. Expect around 5 hours of sunshine a day. Rain falls on about 7 days, adding up to 61 mm. All in all, November is an excellent month for a holiday in San Antonio.
San Antonio in November80December18° · 5 h
In December, San Antonio is mild: daytime highs average 18 °C, and nights cool down to about 8 °C. Expect around 5 hours of sunshine a day. Rain falls on about 6 days, adding up to 42 mm. All in all, December is an excellent month for a holiday in San Antonio.
San Antonio in DecemberSan Antonio compared
Put San Antonio side by side with another destination.
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San Antonio vs. Austin
In October the holiday weather in San Antonio and Austin is about equally good (score 81 vs. 83). During the day Austin is 1 °C cooler than San Antonio.
| in October | San Antonio | Austin |
|---|---|---|
| Holiday score | 81 | 83 |
| Daytime high | 28° | 27° |
| Sunshine | 6 h | 6 h |
| Rainy days | 7 | 7 |
| Best time | Oct – Apr | Oct – Apr |
Through the year
USA in October: the best places
In October, San Antonio ranks 23 among the 31 nearest destinations in this country.
- El Paso26°97
- 2Albuquerque22°94
- 3Santa Fe17°92
- 4Panama City Beach25°26°90
- 5Destin26°26°89
- 6Mobile26°25°87
- 7Fort Worth26°86
- 8Oklahoma City23°86
- 23San AntonioThis page28°81
Planning a trip to San Antonio
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
San Antonio in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
San Antonio has its best school-holiday weather during the Easter holidays (score 81) and its weakest during the summer holidays (score 45).
- 81
Easter holidays
Mar – Apr
ExcellentBest holidays
- 26 °C by day
- 5.9 h of sun a day
- 8 rainy days a month
Good for: Sightseeing & walks
- 56
May half-term
May – Jun
Fair
- 31 °C by day
- 6.6 h of sun a day
- 9 rainy days a month
- 45
Summer holidays
Jul – Aug
Fair
- 35 °C by day
- 8.7 h of sun a day
- 6 rainy days a month
Keep in mind: Peak heat, Storm season
- 81
October half-term
Oct
Excellent
- 28 °C by day
- 6.1 h of sun a day
- 7 rainy days a month
Good for: Sightseeing & walks
Keep in mind: Storm season
- 79
Christmas holidays
Dec – Jan
Good
- 17 °C by day
- 5.0 h of sun a day
- 6 rainy days a month
Good for: Sightseeing & walks
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 10 h 10 min
- Distance
- 8,010 km
- Time zone
- UTC−5
- Jet lag
- About 4 days (6 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
San Antonio lies in an area that Atlantic hurricanes can reach. The hurricane season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April
- May
- June: Season
- July: Season
- August: Peak
- September: Peak
- October: Peak
- November: Season
- December
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM); not a forecast.
Frequently asked questions about San Antonio
When is the best time to visit San Antonio?
The best time to visit San Antonio is from October to April. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in San Antonio?
August is the warmest month, with average highs of 35 °C and nights around 25 °C. January is the coolest month at 17 °C.
When does it rain most in San Antonio?
The wettest month is May with 88 mm of precipitation. The driest month is December with 42 mm.
How many hours of sunshine does San Antonio get?
San Antonio gets around 2,330 hours of sunshine a year. The sunniest month is August with 8.7 hours a day; in December there are 4.8 hours a day.
What time zone is San Antonio in?
San Antonio uses the time zone America/Chicago: UTC−6 in January and UTC−5 in July.
How long is the flight from London to San Antonio?
A nonstop flight from London to San Antonio takes about 10 h 10 min, for a straight-line distance of about 8,010 km.
When is hurricane season in San Antonio?
San Antonio lies in an area that Atlantic hurricanes can reach. The hurricane season runs from June to November, with most storms from August to October. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for San Antonio?
San Antonio has its best school-holiday weather during the Easter holidays (score 81) and its weakest during the summer holidays (score 45). Holiday ratings (0–100): Easter holidays 81, May half-term 56, Summer holidays 45, October half-term 81, Christmas holidays 79.
Near San Antonio
Other destinations close by.
Places with a climate like San Antonio
Destinations whose weather through the year is closest to San Antonio's – good alternatives.