Athens vs Santorini

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Santorini edges ahead as the better destination in September. Santorini offers 12 hours of daily sunshine with only 1 rain days, while Athens sees 11 sunshine hours and 3 rain days.

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

For travelers who prioritize dry weather, Santorini is the stronger choice in September. Santorini receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.

Athens reaches an average high of 28°C (82°F) and drops to 19°C (66°F) at night during September. The daily temperature range is 9°C, meaning moderate variation throughout the day.

Santorini averages 25°C (77°F) for the high and 22°C (72°F) for the low, with a daily range of 3°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.

Athens receives approximately 17 mm of rainfall across 3 rain days during September. Rain is occasional, so a light rain jacket should suffice.

Santorini sees 5 mm over 1 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%.