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 sea temperature 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
Tokyo records a mild change in average high-temperature during September, easing from a hot 31°C (87.8°F) in August to a warm 26.8°C (80.2°F). During September, an average low-temperature of 21.3°C (70.3°F) is observed.Humidity
In September, the average relative humidity is 74%.Rainfall
In Tokyo, in September, it is raining for 12.5 days, with typically 46mm (1.81") of accumulated precipitation. Throughout the year, in Tokyo, there are 134.5 rainfall days, and 425mm (16.73") of precipitation is accumulated.Snowfall
April through December are months without snowfall in Tokyo.Sea temperature
In September, the average sea temperature is 25.3°C (77.5°F).Note: Swimming, diving, and similar water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as very agreeable and pleasurable for lengthy periods without discomfort.
Daylight
In Tokyo, the average length of the day in September 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 is 8.1h.UV index
In Tokyo, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Be vigilant - A duty to shield skin and eyes from injury exists. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.
Frequently asked questions
What are the temperatures in Tokyo in September?
What is the average humidity in September in Tokyo?
How many days does it rain in September in Tokyo?
When it does not snow in Tokyo?
What is the sea water temperature in September in Tokyo?
How many hours of daylight does Tokyo have in September?
When are sunrise and sunset in September in Tokyo?
How long on average sun shines in September in Tokyo?
What is the UV index reading in September in Tokyo?
Average temperature in September
Tokyo, Japan
- Average high temperature in September: 26.8°C
The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in September: 21.3°C
The month with the highest average low temperature is August (25.1°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure in September
Tokyo, Japan
- Average pressure in September: 1013.5mbar
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
Tokyo, Japan
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is April (15.3km/h).
The calmest month (with the lowest average wind speed) is November (12.1km/h).
Average humidity in September
Tokyo, Japan
- Average humidity in September: 74%
The month with the highest relative humidity is July (77%).
The month with the lowest relative humidity is January (59%).
Average rainfall in September
Tokyo, Japan
- Average rainfall in September: 46mm
The wettest month (with the highest rainfall) is October (51mm).
The driest month (with the least rainfall) is December (21mm).
Average rainfall days in September
Tokyo, Japan
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Tokyo, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (21mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Tokyo, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Tokyo, Japan
- Average sea temperature in September: 25.3°C
The best month for swimming (with the highest average sea temperature) is August (25.7°C).
The coldest month (with the lowest average sea temperature) is February (14°C).
Average daylight in September /
Average sunshine in September
Tokyo, 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: 8h and 1min
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 48min).
Average sunshine days in September
Tokyo, Japan
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is June (14.4 days).
Average UV index in September
Tokyo, Japan
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Tokyo, Japan
- Average cloud cover in September: 38
The months with the most cloud cover are June and October (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 28).
Average visibility in September
Tokyo, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Tokyo, Japan
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