Japan Weather in September: Temperature, Precipitation, Wind
September is the start of autumn in Japan, and the weather begins to cool down after the hot summer months. On average, Japan experiences temperatures between a low of 24.0°C (75.2°F) and a high of 30.3°C (86.5°F), with the southern regions being warmer than the north. The average humidity is around 79.4%.
What is the temperature in Japan in September?
Average air temperature in Japan is 26.9°C (80.4°F) in September. The outside temperature in Japan feels like 29°C (84.3°F) on a typical September day. The highest average temperature during sunny days is 30.3°C (86.5°F) and feels like 34.8°C (94.7°F). The lowest average temperature after dark is 24°C (75.2°F) which feels like 24°C (75.2°F).
How hot is Japan in September?
The hot temperature in September in Japan rises to 34°C (93.2°F) on sunny days with low cloud coverage and 79.4% humidity. During hottest days of September it feels like 42.8 °C (109°F). The average maximum temp in Japan is 30.3°C (109°F) during day time in September.
How cold is Japan in September?
The coldest temp in Japan in September drops to 19°C (66.2°F) during the cold nights. With 21.3km/h (13.2mph) winds and 79.4% humidity it feels like 19°C (66.2°F) on the coldest nights. The average minimum temperature is 24°C (75.2°F) during night time in September.
Does it rain in Japan in September?
Yes, it rains for 20 days in Japan in September averaging 6.58 mm of precipitation. Japan has a 46.7% chance for rain throughout the entire month of September.
How much does it rain in Japan throughout September?
Japan has 6.58 mm (0.26 inch) of rain per day on average in September. It rains for an average of 20 days out of the entire month.
Is Japan windy in September?
The average speed of wind in Japan during September is 21.3km/h (13.2mph) and average windgust is 29.8km/h (18.5mph). On some days in September wind can reach up to 39.8km/h (24.7mph).
What is the direction of the wind in Japan in September?
Most days of September the wind is blowing from South-Southeast direction in Japan.
What are the humidity levels in Japan in September?
The average humidity levels in Japan in September are 79.4%. Daily humidity levels in Japan range from 67.1% to 97.4% during September.
How many hours of daylight are in Japan in September?
Japan has 12 hours 25 minutes of daylight in September on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Japan in September is at 5:23:10 and the sunset is at 17:48:23.
What is the cloud coverage in Japan in September?
Clouds cover 58.8% of the sky on average throughout September in Japan. The cloud coverage ranges from 20.7% to 91.7% depending on the day of the month.
What is the UV level in September in Japan?
The average UV index in Japan is 6.8 in September. UV levels change throughout the month and range from 0 to 9.
What is the solar radiation in Japan in September?
The average solar radiation is 182.7 W/m2 (Watts per square meter) in Japan during September. However solar radiation levels change throughout the month and range from 6.5 W/m2 to 280.6 W/m2.
What is the solar energy during September in Japan?
The average solar energy during September in Japan is 15.8 MJ/m2 (megajoules per square metre). Solar energy ranges from 0.6 MJ/m2, to 24.3 MJ/m2 during September.
Are there severe weather risks in Japan in September?
Yes, there is a 20.7% risk for severe weather in Japan in September.
What is the air pressure in Japan in September?
On average the air pressure in Japan in September is 1012.3 mb (millibars). Throughout the month the sea level pressure ranges from 1006.3 mb to 1019.5 mb.
What is the visibility in Japan in September?
The average daylight visibility in Japan in September is 15 km (9.3 miles). Depending on the precipitation the visibility ranges from 8 km (5 miles) to 18.4 km (11.4 miles) throughout September.
What is the dew point in Japan in September?
The average dew point in Japan during September is 22.8°C (73°F).
Where is the data for Japan climate in September coming from?
The climate data for Japan in September is collected from the following weather stations.
- KUMAGAYA, JA
- CHICHIBU, JA
- FUSSA YOKOTA AB, JA
- TOKYO, JA
- YOKOHAMA, JA
- TOKYO INTERNATIONAL, JA
- TATEYAMA, JA
- KATSUURA, JA
- KASTNER ARMY AIR FIELD CAMP ZAMA JAPAN, JA
- CHIBA, JA
- SHIMOFUSA, JA
- RJTT