Santorini vs Athens

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Santorini edges ahead as the better destination in September. Santorini offers 11 hours of daily sunshine with only 1 rain days, while Athens sees 11 sunshine hours and 3 rain days.

Santorini sits in the comfortable travel range at 25°C. Athens is also comfortable at 28°C.

For travelers who prioritize dry weather, Santorini is the stronger choice in September.

Santorini reaches an average high of 25°C (77°F) and drops to 22°C (72°F) at night during September. The daily temperature range is 3°C, meaning relatively stable temperatures from day to night.

Athens averages 28°C (82°F) for the high and 19°C (66°F) for the low, with a daily range of 9°C. The 3°C difference is noticeable but not dramatic.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in September.

Santorini receives approximately 5 mm of rainfall across 1 rain days during September. Rain is rare this month, so dry conditions are likely.

Athens sees 17 mm over 3 rain days. That makes Santorini the drier option by 2 rain days and 12 mm of total precipitation.

Both cities share similar humidity levels at 65%.