Lisbon vs Athens

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Athens edges ahead as the better destination in September. Athens offers 11 hours of daily sunshine with only 3 rain days, while Lisbon sees 11 sunshine hours and 4 rain days.

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

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

Lisbon reaches an average high of 25°C (77°F) and drops to 18°C (64°F) at night during September. The daily temperature range is 7°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.

Lisbon receives approximately 29 mm of rainfall across 4 rain days during September. Rain is occasional, so a light rain jacket should suffice.

Athens sees 17 mm over 3 rain days. That makes Athens the drier option by 1 rain day and 12 mm of total precipitation.

Both cities share similar humidity levels at 65%.