Tokyo vs London

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

Tokyo sits in the comfortable travel range at 15°C. London is cooler at 11°C.

For travelers who prioritize dry weather, both cities are equally dry in September.

Tokyo reaches an average high of 15°C (59°F) and drops to 7°C (45°F) at night during September. The daily temperature range is 8°C, meaning moderate variation throughout the day.

London averages 11°C (52°F) for the high and -1°C (30°F) for the low, with a daily range of 12°C. The 4°C difference is noticeable but not dramatic.

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

Tokyo receives approximately 50 mm of rainfall across 4 rain days during September. Rain is occasional, so a light rain jacket should suffice.

London sees 50 mm over 4 rain days. Both cities are equally rainy this month.

Both cities share similar humidity levels at 65%.