San Antonio climate
United States
San Antonio climate can look simple on averages, but travel comfort is often driven by humidity, wind, and rain.
San Antonio climate can look simple on averages, but travel comfort is often driven by humidity, wind, and rain.
Climate facts
Dec · Jan · Feb
Avg low 5–9°C / high 17–21°C · Rainy days: 4–7 / ~25–55 mm
Mar · Apr · May
Avg low 11–19°C / high 24–33°C · Rainy days: 5–9 / ~45–95 mm
Jun · Jul · Aug · Sep
Avg low 23–25°C / high 34–37°C · Rainy days: 4–8 / ~40–90 mm (Sep can vary)
Oct · Nov
Avg low 10–17°C / high 23–30°C · Rainy days: 4–7 / ~40–90 mm
How it tends to feel for travel
For travel, what you remember is often variability (rain patterns, humidity, daily swings), not the average.
When it tends to fit
- • Once you see the year-round pattern, it’s easier to judge whether a month fits your style.
- • If you revisit the city, separating “seasonal itineraries” can save a lot of planning time.
- • In humidity- or rain-driven cities, adjusting the indoor/outdoor ratio can change comfort a lot.
When it may not fit
- • If you rely only on averages, you may be surprised by variability (squalls, wind, indoor AC).
- • In monsoon-like periods, the more your itinerary depends on outdoor walking, the higher the risk.
- • If you’re fine with cold but hate damp chill, it can feel colder than you expect.
Outfit notes
This connects climate patterns to packing—without over-interpreting.
- • 🧩 Key idea: summer comfort is driven by the **heat index**, and spring can be volatile with **thunderstorms and gusty winds**.
- • 🥵 Jun–Sep: breathable, sweat-friendly fabrics help. A thin layer can be useful indoors with strong A/C.
- • 🌩️ Mar–May: storms can arrive quickly—plan for brief heavy rain and shifting wind.
Once you lock in a couple of constraints, the decision gets much easier.
Explore San Antonio
These pages are connected so you can compare conditions and decide for yourself.