San Antonio weather in September 2026

Q: How hot is it in San Antonio in September?

Daytime temperatures usually reach 27°C in San Antonio in September with moderate heat and humidity, falling to 19°C at night.

Q: How sunny is it in San Antonio in September?

There are normally 8 hours of bright sunshine each day in San Antonio in September - that's 65% of daylight hours.

Q: How warm is the sea around San Antonio in September?

The average sea temperature around San Antonio in September is 25°C.

Q: Does it rain in San Antonio in September?

There are usually 6 days with some rain in San Antonio in September and the average monthly rainfall is 45mm.

Expect daytime maximum temperatures of 27°C in San Antonio, Ibiza in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 46 mm of rainfall in the month.

27
27°C max day temperature
8
8 hours of sunshine per day
6
6 days with some rainfall
19
19°C min night temperature
12
12 hours of daylight per day
L
Low heat & humidity
46
46 mm of monthly rainfall
6
6 (High) UV index
25
25°C sea temperature

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The September weather guide for Ibiza (San Antonio) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

More about Ibiza

How hot is it in San Antonio in September?

Daytime temperatures usually reach 27°C in San Antonio in September with moderate heat and humidity, falling to 19°C at night.

How sunny is it in San Antonio in September?

There are normally 8 hours of bright sunshine each day in San Antonio in September - that's 65% of daylight hours.

How warm is the sea around San Antonio in September?

The average sea temperature around San Antonio in September is 25°C.

Does it rain in San Antonio in September?

There are usually 6 days with some rain in San Antonio in September and the average monthly rainfall is 45mm.

San Antonio September sunrise & sunset times

Browse the sunrise and sunset times for San Antonio in September 2026. Select a month to view San Antonio sunrise and sunset times for the next 12 months.

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