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Thira weather in September 2025
Expect 25°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Thira in September based on long-term weather averages. There is usually 1 day with some rainfall and 13 mm of average monthly rainfall in September.
- 25°C max day temperature
25 - 10 hours of sunshine per day
- 1 day with some rainfall
1 - 20°C min night temperature
20 - 12 hours of daylight per day
12 - Low heat & humidity
L - 13 mm of monthly rainfall
13 - 7 (High) UV index
7 - 24°C sea temperature
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Recommended for Santorini
The September weather guide for Santorini (Thira) 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 Greece
How hot is it in Thira in September?
Daytime temperatures usually reach 25°C in Thira in September with low heat and humidity, falling to 20°C at night.
How sunny is it in Thira in September?
There are normally 10 hours of bright sunshine each day in Thira in September - that's 83% of daylight hours.
How warm is the sea around Thira in September?
The average sea temperature around Thira in September is 24°C.
Does it ever rain in Thira in September?
There is usually 1 day with some rain in Thira in September and the average monthly rainfall is 13mm.
Thira September sunrise & sunset times
Browse the sunrise and sunset times for Thira in September 2025. Select a month to view Thira sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st September 2025 | 05:50 | 18:46 |
| Monday, 15th September 2025 | 06:01 | 18:26 |
| Tuesday, 30th September 2025 | 06:13 | 18:03 |
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