Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift from August to September coincides with a small decrease in the average high-temperature, down to a warm 26.9°C (80.4°F) from a hot 30.6°C (87.1°F). During September, Kasumigaseki observes a consistent average nighttime temperature of 21.5°C (70.7°F).Humidity
In September, the average relative humidity in Kasumigaseki is 74%.Rainfall
September is the month with the most rainfall in Kasumigaseki. Rain falls for 12.9 days and accumulates 54mm (2.13") of precipitation.Snowfall
In Kasumigaseki, snow does not fall in March through December.Daylight
The average length of the day in September in Kasumigaseki, Japan, is 12h and 25min.On the first day of the month, sunrise is at 05:13 and sunset at 18:08. On the last day of September, sunrise is at 05:35 and sunset at 17:26 JST.
Sunshine
In September, the average sunshine in Kasumigaseki is 7.8h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 6 in September leads to these recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Frequently asked questions
What are the temperatures in Kasumigaseki in September?
What is the average humidity in September in Kasumigaseki?
What is the rainiest month in Kasumigaseki?
How much does it rain in Kasumigaseki in September?
When it does not snow in Kasumigaseki?
How many hours of daylight does Kasumigaseki have in September?
When is the sunrise / sunset in September in Kasumigaseki?
How many hours of sunshine does Kasumigaseki have in September?
What is the UV index intensity in September in Kasumigaseki?
Average temperature in September
Kasumigaseki, Japan
- Average high temperature in September: 26.9°C
The warmest month (with the highest average high temperature) is August (30.6°C).
The month with the lowest average high temperature is January (8.8°C).
- Average low temperature in September: 21.5°C
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (3°C).
Average pressure in September
Kasumigaseki, Japan
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Kasumigaseki, Japan
- Average wind speed in September: 13km/h
The windiest month (with the highest average wind speed) is April (15.6km/h).
The calmest month (with the lowest average wind speed) is November (12.3km/h).
Average humidity in September
Kasumigaseki, Japan
- Average humidity in September: 74%
The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (60%).
Average rainfall in September
Kasumigaseki, Japan
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is September (54mm).
The driest month (with the least rainfall) is February (10mm).
Average rainfall days in September
Kasumigaseki, Japan
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Kasumigaseki, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Kasumigaseki, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Kasumigaseki, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in September
Kasumigaseki, Japan
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is January (25.4 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in September
Kasumigaseki, Japan
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Kasumigaseki, Japan
- Average cloud cover in September: 41
The months with the most cloud cover are June and October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 28).
Average visibility in September
Kasumigaseki, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
Kasumigaseki, Japan
Weather forecast for your location
2. Allow the app to use your location
