Tokyo vs Osaka

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Osaka edges ahead as the better destination in September. Osaka offers 9 hours of daily sunshine with only 12 rain days, while Tokyo sees 8 sunshine hours and 14 rain days.

Tokyo sits in the comfortable travel range at 26°C. Osaka is also comfortable at 28°C.

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

Tokyo reaches an average high of 26°C (79°F) and drops to 20°C (68°F) at night during September. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Osaka averages 28°C (82°F) for the high and 21°C (70°F) for the low, with a daily range of 7°C. The 2°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 189 mm of rainfall across 14 rain days during September. You can expect rain roughly every other day.

Osaka sees 168 mm over 12 rain days. That makes Osaka the drier option by 2 rain days and 21 mm of total precipitation.

Humidity also differs: Tokyo averages 65% while Osaka sits at 70%. Osaka will feel muggier, especially at higher temperatures.