London vs Amsterdam

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, London edges ahead as the better destination in September. London offers 8 hours of daily sunshine with only 9 rain days, while Amsterdam sees 8 sunshine hours and 12 rain days.

London sits in the comfortable travel range at 19°C. Amsterdam is also comfortable at 18°C.

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

London reaches an average high of 19°C (66°F) and drops to 11°C (52°F) at night during September. The daily temperature range is 8°C, meaning moderate variation throughout the day.

Amsterdam averages 18°C (64°F) for the high and 12°C (54°F) for the low, with a daily range of 6°C. The two cities feel quite similar in terms of temperature.

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

London receives approximately 48 mm of rainfall across 9 rain days during September. You can expect rain roughly every other day.

Amsterdam sees 70 mm over 12 rain days. That makes London the drier option by 3 rain days and 22 mm of total precipitation.

Both cities share similar humidity levels at 65%.