Monthly weather overview

iconSan Antonio monthly weather overview United States · 샌안토니오

A quick, year-round overview of monthly and seasonal weather in San Antonio. Use this page to get a feel for which months and seasons match your travel style.

San Antonio weather at a glance

  • San Antonio has **hot summers** and **generally mild winters**, typical of inland Texas.
  • Spring (roughly Mar–May) can bring volatile weather like thunderstorms, gusty winds, and occasional hail (varies by year).
  • Summer comfort is driven by the **heat index**—humidity can make it feel much hotter than the air temperature.
  • Fall gradually improves outdoor comfort, though early fall can still see heavier rain events in some years.
  • Packing works best when you plan for sun exposure, rain bursts, and strong indoor A/C.
Dec · Jan · Feb

Winter (mild): short cool snaps, with wind-driven chill

Avg low 5–9°C / high 17–21°C · Rainy days: 4–7 / ~25–55 mm

  • Usually mild, with occasional cooler air.
  • Wind can drop perceived temperature.
  • Some rain is possible.

Suggested outfits

  • · Light jacket + layers
  • · Optional windbreaker

A note for travelers

In winter, wind often matters more than the number on the forecast.

Mar · Apr · May

Spring (warming): outdoor-friendly, with stormy bursts at times

Avg low 11–19°C / high 24–33°C · Rainy days: 5–9 / ~45–95 mm

  • Many pleasant outdoor days.
  • Thunderstorms can be brief but intense.
  • Late spring can start to feel hot.

Suggested outfits

  • · Light clothing + thin layer
  • · Optional rain option

A note for travelers

Quick-drying clothing can be more useful than heavy rain gear in spring.

Jun · Jul · Aug · Sep

Summer (hot): heat index and heat stress are the main story

Avg low 23–25°C / high 34–37°C · Rainy days: 4–8 / ~40–90 mm (Sep can vary)

  • Midday can feel very hot.
  • Humidity raises heat stress.
  • Pop-up storms can soak you quickly.

Suggested outfits

  • · Breathable clothing
  • · Optional indoor layer
  • · Optional hat/sunscreen

A note for travelers

In summer, how long you stay outside often decides the whole day.

Oct · Nov

Fall (improving): better walking comfort, cooler evenings

Avg low 10–17°C / high 23–30°C · Rainy days: 4–7 / ~40–90 mm

  • October stays warm; November feels cooler.
  • Rain can add humidity on some days.
  • Evenings may want a light layer.

Suggested outfits

  • · Light clothing + thin jacket
  • · Optional rain option

A note for travelers

Fall is often when outdoor exploring feels easiest again.

Want detailed monthly weather?

Pick a month below to see detailed average temperatures, rainfall, outfit ideas, and travel tips.

Explore San Antonio

These pages are connected so you can compare conditions and decide for yourself.

San Antonio monthly weather overview — seasons & best time to visit | CityWeather | CityWeather