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
In September, the average high-temperature registers at a still warm 26°C (78.8°F), nearly identical to August's 28.8°C (83.8°F). Shinjuku, during the nights of September, averages a temperature close to its daytime high, at an agreeable 22.3°C (72.1°F).Humidity
The average relative humidity in September in Shinjuku is 77%.Rainfall
In Shinjuku, in September, it is raining for 15.2 days, with typically 106mm (4.17") of accumulated precipitation. Throughout the year, there are 150.9 rainfall days, and 867mm (34.13") of precipitation is accumulated.Snowfall
April through December are months without snowfall in Shinjuku.Daylight
In Shinjuku, 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, in Shinjuku, Japan, sunrise is at 05:35 and sunset at 17:26 JST.
Sunshine
The average sunshine in September in Shinjuku is 8.2h.UV index
The average daily maximum UV index in September in Shinjuku is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum daily UV index of 6 during September morphs into the following directions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What are the temperatures in Shinjuku in September?
What is the average humidity in September in Shinjuku?
How much does it rain in Shinjuku in September?
When it does not snow in Shinjuku?
What is the average length of the day in September in Shinjuku?
When are sunrise and sunset in September in Shinjuku?
How long on average sun shines in September in Shinjuku?
What is the UV index reading in September in Shinjuku?
Average temperature in September
Shinjuku, Japan
- Average high temperature in September: 26°C
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (9.8°C).
- Average low temperature in September: 22.3°C
The month with the highest average low temperature is August (25.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).
Average pressure in September
Shinjuku, Japan
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Shinjuku, Japan
- Average wind speed in September: 16.8km/h
The windiest month (with the highest average wind speed) is March (20.8km/h).
The calmest month (with the lowest average wind speed) is June (15.9km/h).
Average humidity in September
Shinjuku, Japan
- Average humidity in September: 77%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (61%).
Average rainfall in September
Shinjuku, Japan
- Average rainfall in September: 106mm
The wettest month (with the highest rainfall) is October (119mm).
The driest months (with the least rainfall) are February and December (39mm).
Average rainfall days in September
Shinjuku, Japan
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in September
Shinjuku, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Shinjuku, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Shinjuku, 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 42min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in September
Shinjuku, Japan
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in September
Shinjuku, Japan
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Shinjuku, Japan
- Average cloud cover in September: 36
The months with the most cloud cover are March, June and October (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Shinjuku, 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).
Shinjuku, Japan
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