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
The arrival of September is marked by a minor reduction in average high-temperature, sliding from a hot 30.9°C (87.6°F) in August to a warm 26.2°C (79.2°F). Nishiwaki experiences an average nighttime temperature of 18°C (64.4°F) in the month of September.Humidity
The average relative humidity in September is 82%.Rainfall
In Nishiwaki, Japan, in September, during 14 rainfall days, 117mm (4.61") of precipitation is typically accumulated. In Nishiwaki, Japan, during the entire year, the rain falls for 163.2 days and collects up to 968mm (38.11") of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September in Nishiwaki, sunrise is at 05:32 and sunset at 18:27. On the last day of the month, sunrise is at 05:54 and sunset at 17:45 JST.
Sunshine
The average sunshine in September is 7.9h.UV index
In Nishiwaki, 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 rays for the average person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Nishiwaki?
What is the average humidity in September in Nishiwaki?
How many days does it rain in September in Nishiwaki?
When it does not snow in Nishiwaki?
What is the average length of the day in September in Nishiwaki?
When are sunrise and sunset in September in Nishiwaki?
How many hours of sunshine does Nishiwaki have in September?
What is the UV index reading in September in Nishiwaki?
Average temperature in September
Nishiwaki, Japan
- Average high temperature in September: 26.2°C
The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in September: 18°C
The month with the highest average low temperature is August (22.2°C).
The coldest month (with the lowest average low temperature) is January (0°C).
Average pressure in September
Nishiwaki, Japan
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is February (1020.1mbar).
The month with the lowest atmospheric pressure is June (1008.7mbar).
Average wind speed in September
Nishiwaki, Japan
- Average wind speed in September: 8km/h
The windiest month (with the highest average wind speed) is March (9.5km/h).
The calmest month (with the lowest average wind speed) is June (7.5km/h).
Average humidity in September
Nishiwaki, Japan
- Average humidity in September: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Nishiwaki, Japan
- Average rainfall in September: 117mm
The wettest month (with the highest rainfall) is July (181mm).
The driest months (with the least rainfall) are January and November (34mm).
Average rainfall days in September
Nishiwaki, Japan
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in September
Nishiwaki, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (61mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Nishiwaki, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.5 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
Nishiwaki, 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 54min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Nishiwaki, Japan
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is May (17.9 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in September
Nishiwaki, 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 and December (UV index 2).
Average cloud cover in September
Nishiwaki, Japan
- Average cloud cover in September: 46
The month with the most cloud cover is July (Cloud cover 55).
The month with the least cloud cover is November (Cloud cover 41).
Average visibility in September
Nishiwaki, Japan
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, November and December (9km).
The month with the lowest visibility is July (7km).
