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
September
Weather in September
Temperature
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a tropical 30.5°C (86.9°F) in August to a moderately hot 26.8°C (80.2°F). Throughout the month of September, Shimomatsucho witnesses an average temperature of 20.7°C (69.3°F).Humidity
The average relative humidity in September is 76%.Rainfall
In September, the rain falls for 16 days. Throughout September, 117mm (4.61") of precipitation is accumulated. Throughout the year, in Shimomatsucho, there are 169.5 rainfall days, and 1047mm (41.22") of precipitation is accumulated.Snowfall
In Shimomatsucho, Japan, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 05:31 and sunset at 18:25. On the last day of the month, sunrise is at 05:52 and sunset at 17:44 JST.
Sunshine
The average sunshine in September in Shimomatsucho is 9.1h.UV index
In Shimomatsucho, 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 the ordinary person.Note: In September, a regular UV index of 5 translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. Around midday, solar radiation is most harmful; hence, exposure should be limited. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Shimomatsucho?
What is the average humidity in September in Shimomatsucho?
How many days does it rain in September in Shimomatsucho?
When it does not snow in Shimomatsucho?
What is the average length of the day in September in Shimomatsucho?
When are sunrise and sunset in September in Shimomatsucho?
How long on average sun shines in September in Shimomatsucho?
How high is the UV index in September in Shimomatsucho?
Average temperature in September
Shimomatsucho, Japan
- Average high temperature in September: 26.8°C
The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is January (7.8°C).
- Average low temperature in September: 20.7°C
The month with the highest average low temperature is August (24.5°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).
Average pressure in September
Shimomatsucho, Japan
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is February (1019.7mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).
Average wind speed in September
Shimomatsucho, Japan
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is January (13.1km/h).
The calmest month (with the lowest average wind speed) is June (8.4km/h).
Average humidity in September
Shimomatsucho, Japan
- Average humidity in September: 76%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Shimomatsucho, Japan
- Average rainfall in September: 117mm
The wettest month (with the highest rainfall) is July (177mm).
The driest month (with the least rainfall) is January (35mm).
Average rainfall days in September
Shimomatsucho, Japan
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in September
Shimomatsucho, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (29mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Shimomatsucho, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.5 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Shimomatsucho, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Shimomatsucho, Japan
- Average sunshine days in September: 11 days
The month with the most sunshine days is May (17.7 days).
The month with the least sunshine days is July (6.8 days).
Average UV index in September
Shimomatsucho, Japan
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Shimomatsucho, Japan
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Shimomatsucho, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).
