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San Antonio has a semi-tropical climate that rarely strays from the agreeable. Mid-summer through September is the most humid period, but even the August heat spells aren't half as bad as you'd think. Humidity levels follow a year-round pattern of high in the mornings and low in the afternoons. The hottest summer's day seldom tops 95°F (35°C), and winter temperatures usually drop no lower than 40°F (5°C). Autumn and spring are the optimum times to visit.
Temperature (average ° C)
Rainfall (average mm)
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