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Weather in San Antonio — today

Thunderstorm warning

Tomorrow Day after tomorrow 3 days Week 14 days Month forecast Weather archive

Now in San Antonio

☁️

+29°

Overcast

Feels like +32° · humidity 70%

Today 12.9: +38° / +26°

🕐 00:25

Wind

15 km/h

UV index

Air (AQI)

21 · Good

Precipitation

16%

Humidity

70%

Pressure

1010 hPa

Sunrise / sunset

07:17 / 19:42

👕 What to wear today

Hot — light breathable clothing, a hat, plenty of water.

💧 Bring waterFeels warmer by 3°

Weather for an activity:

🎣 fishing 🏃 a run 📸 a photo shoot 🚶 a walk

Detailed weather information for San Antonio

Today, 12 September, Saturday, in San Antonio (United States): partly cloudy, very hot. During the day the air will warm up to +38°, at night around +26°. Due to the wind it feels like +32°. Wind up to 21 km/h. No precipitation expected, you won't need an umbrella. Dress as lightly as possible, wear a hat, apply sunscreen and keep water with you. The sun will rise at 07:17 and set at 19:42 — daylight lasts 12 hours.

Hourly weather in San Antonio

💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).

Weather in San Antonio for 14 days

Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).

▶

Today 12.9

☁️

💧 16%

+26° +38°

Morning

☀️

+26°

Day

☁️

+38°

Evening

🌇

+36°

Night

🌙

+26°

Overcast · precipitation 16% · wind up to 21 km/h.
🥵 Extreme heat. No more than 15–20 minutes in direct sun is safe. Water, SPF 50 sunscreen and a hat are a must.

▶

Tomorrow 13.9

☁️

💧 3%

+25° +38°

Morning

☁️

+26°

Day

☁️

+38°

Evening

🌇

+37°

Night

🌙

+25°

Overcast · precipitation 3% · wind up to 28 km/h.
🥵 Extreme heat. No more than 15–20 minutes in direct sun is safe. Water, SPF 50 sunscreen and a hat are a must.

▶

Mon 14.9

⛅

💧 5%

+25° +39°

Morning

⛅

+30°

Day

⛅

+39°

Evening

🌇

+36°

Night

🌙

+25°

Partly cloudy · precipitation 5% · wind up to 31 km/h.
🥵 Extreme heat. No more than 15–20 minutes in direct sun is safe. Water, SPF 50 sunscreen and a hat are a must.

▶

Tue 15.9

🌦️

💧 1%

+25° +39°

Morning

🌦️

+30°

Day

🌦️

+39°

Evening

🌇

+36°

Night

🌙

+25°

Rain showers · precipitation 1% · wind up to 30 km/h.
🥵 Extreme heat. No more than 15–20 minutes in direct sun is safe. Water, SPF 50 sunscreen and a hat are a must.

▶

Wed 16.9

☁️

💧 7%

+25° +38°

Morning

☁️

+30°

Day

☁️

+38°

Evening

🌇

+35°

Night

🌙

+25°

Overcast · precipitation 7% · wind up to 23 km/h.
🥵 Extreme heat. No more than 15–20 minutes in direct sun is safe. Water, SPF 50 sunscreen and a hat are a must.

▶

Thu 17.9

☁️

💧 11%

+25° +36°

Morning

☁️

+29°

Day

☁️

+36°

Evening

🌇

+33°

Night

🌙

+25°

Overcast · precipitation 11% · wind up to 22 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

▶

Fri 18.9

☀️

💧 8%

+24° +37°

Morning

☀️

+29°

Day

☀️

+37°

Evening

🌇

+34°

Night

🌙

+24°

Clear · precipitation 8% · wind up to 19 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

▶

Sat 19.9

☁️

💧 12%

+25° +39°

Morning

☁️

+30°

Day

☁️

+39°

Evening

🌇

+36°

Night

🌙

+25°

Overcast · precipitation 12% · wind up to 17 km/h.
🥵 Extreme heat. No more than 15–20 minutes in direct sun is safe. Water, SPF 50 sunscreen and a hat are a must.

▶

Sun 20.9

🌦️

💧 8%

+27° +40°

Morning

🌦️

+32°

Day

🌦️

+40°

Evening

🌇

+37°

Night

🌙

+27°

Drizzle · precipitation 8% · wind up to 31 km/h.
🥵 Extreme heat. No more than 15–20 minutes in direct sun is safe. Water, SPF 50 sunscreen and a hat are a must.

▶

Mon 21.9

🌦️

💧 9%

+26° +36°

Morning

🌦️

+30°

Day

🌦️

+36°

Evening

🌇

+34°

Night

🌙

+26°

Drizzle · precipitation 9% · wind up to 16 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

▶

Tue 22.9

☀️

💧 14%

+25° +37°

Morning

☀️

+29°

Day

☀️

+37°

Evening

🌇

+34°

Night

🌙

+25°

Clear · precipitation 14% · wind up to 19 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

▶

Wed 23.9

⛅

💧 22%

+24° +37°

Morning

⛅

+29°

Day

⛅

+37°

Evening

🌇

+34°

Night

🌙

+24°

Partly cloudy · precipitation 22% · wind up to 23 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

▶

Thu 24.9

☀️

💧 29%

+24° +37°

Morning

☀️

+29°

Day

☀️

+37°

Evening

🌇

+34°

Night

🌙

+24°

Clear · precipitation 29% · wind up to 23 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

▶

Fri 25.9

🌤️

💧 26%

+24° +37°

Morning

🌤️

+29°

Day

🌤️

+37°

Evening

🌇

+34°

Night

🌙

+24°

Mostly clear · precipitation 26% · wind up to 26 km/h.
☀️ Very hot. Drink more water, avoid the midday sun, sunscreen is needed.

🗺️ Precipitation radar

Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.

Rain intensity:lightmoderateheavy

🎯 What to do in this weather — indices of the day

Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.

🏃 Running

16 / 100

comfort for running · Bad

🧴 UV

moderate · low

☂️ Rain

16%

unlikely · low

✨ Stars

77 / 100

evening visibility · Good

🧺 Laundry drying

52 / 100

will dry outside · Average

🚗 Car wash

76 / 100

no rain expected · Good

🌫️ Air quality

Good air

European AQI

PM2.5: 6PM10: 8O₃: 51NO₂: 4

The air is clean — you can walk and exercise outside.

🌅 Sun, moon and sea

Sunrise

07:17

Sunset

19:42

Golden hour

19:11

Daylight

12 h (-2 min vs yesterday)

San Antonio climate by month

Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.

+17°

+7°

Jan

+19°

+9°

Feb

+23°

+12°

Mar

+27°

+16°

Apr

+30°

+20°

May

+33°

+23°

Jun

+34°

+24°

Jul

+35°

+25°

Aug

+32°

+22°

Sep

+27°

+17°

Oct

+21°

+12°

Nov

+18°

+8°

Dec

swipe sideways →

Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit

Month	Day	Night	Precipitation	What to pack and what makes the month notable (events, nuances)
January	+17°	+7°	57 mm	Cool: around +17° by day, you'll need a warm layer. 🙂 a sweater for the evening. This is the coldest month of the year.
February	+19°	+9°	60 mm	Ideal weather: +19° daytime — neither hot nor cold. 🙂 a sweater for the evening.
March	+23°	+12°	80 mm	The most pleasant season: +23° by day, comfortable all day long. One of the wettest months (80 mm): downpours can derail plans. 🙂 a sweater for the evening. Weather-wise, one of the three best months to visit.
April	+27°	+16°	80 mm	Warm and comfortable: +27° by day, +16° at night. It's a rainy month (80 mm) — an umbrella is a must. 😊 light summer clothing. Weather-wise, one of the three best months to visit.
May	+30°	+20°	111 mm	Gentle warmth — about +30° daytime, great walking weather. Frequent rain (111 mm over the month) — keep indoor backup plans. 😊 light summer clothing. Statistically the wettest month of the year.
June	+33°	+23°	72 mm	A hot, dry month: +33° daytime, warm pleasant evenings. One of the wettest months (72 mm): downpours can derail plans. ☀️ water and sunscreen. The longest daylight hours of the year — more time for everything.
July	+34°	+24°	54 mm	Hot (+34° by day) but dry — manageable with a sensible schedule. ☀️ water and sunscreen.
August	+35°	+25°	50 mm	Up to +35° by day — hot, yet not muggy; mornings and evenings are pleasant. ☀️ water and sunscreen. This is the hottest month of the year in San Antonio.
September	+32°	+22°	84 mm	A comfortable month: +32° by day without exhausting heat. One of the wettest months (84 mm): downpours can derail plans. 😊 light summer clothing.
October	+27°	+17°	84 mm	Warm and comfortable: +27° by day, +17° at night. It's a rainy month (84 mm) — an umbrella is a must. 😊 light summer clothing. Weather-wise, one of the three best months to visit.
November	+21°	+12°	68 mm	Ideal weather: +21° daytime — neither hot nor cold. Frequent rain (68 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening.
December	+18°	+8°	63 mm	Cool weather: +18° by day, noticeably colder in the evening. One of the wettest months (63 mm): downpours can derail plans. 🙂 a sweater for the evening. The shortest daylight of the year — it gets dark early.

When to visit San Antonio

✅ Recommended time to visit

🌟 Best time: March, April, October

Daytime air+23…+27°

Precipitationoften

Why: comfortable +23…+27° by day, little rain.

⚠️ Doable, with caveats

🌤️ Shoulder season: February, June, July, August, September, November

Daytime air+19…+35°

Precipitationoften

Why: noticeable rain risk (50–84 mm/month) — pack an umbrella and backup plans.

🔴 Not the best time

🌤️ Shoulder season: January, May, December

Daytime air+17…+30°

Precipitationoften

Why: the rainy season (57–111 mm/month) — downpours almost daily.

Bottom line: the best time to visit San Antonio is March, April, October, and the most comfortable months are March, April, October. The toughest months to visit are January, May, December: frequent rain.