September weather forecastNichihara, Japan
September
Weather in September
September, the first month of the autumn in Nichihara, is still a warm month, with temperature in the range of an average low of 19.2°C (66.6°F) and an average high of 24.3°C (75.7°F).Temperature
The arrival of September corresponds with a light shift in temperature, down from 28.2°C (82.8°F) in August to a still moderately hot 24.3°C (75.7°F). The month of September records an average low-temperature of 19.2°C (66.6°F) in Nichihara.Humidity
In Nichihara, Japan, the average relative humidity in September is 82%.Rainfall
In Nichihara, Japan, in September, during 18.5 rainfall days, 124mm (4.88") of precipitation is typically accumulated. Throughout the year, in Nichihara, Japan, there are 209.9 rainfall days, and 1304mm (51.34") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Nichihara, Japan.Daylight
The average length of the day in September in Nichihara is 12h and 24min.On the first day of the month, sunrise is at 05:45 and sunset at 18:39. On the last day of September, sunrise is at 06:06 and sunset at 17:58 JST.
Sunshine
In Nichihara, the average sunshine in September is 8.4h.UV index
In Nichihara, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 5 in September translates into this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. 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
Average temperature in September
Nichihara, Japan
- Average high temperature in September: 24.3°C
The warmest month (with the highest average high temperature) is August (28.2°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 19.2°C
The month with the highest average low temperature is August (22.8°C).
The coldest month (with the lowest average low temperature) is January (2.1°C).
Average pressure in September
Nichihara, Japan
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is January (1021.3mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).
Average wind speed in September
Nichihara, Japan
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is December (15.6km/h).
The calmest month (with the lowest average wind speed) is June (8.8km/h).
Average humidity in September
Nichihara, Japan
- Average humidity in September: 82%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is March (74%).
Average rainfall in September
Nichihara, Japan
- Average rainfall in September: 124mm
The wettest month (with the highest rainfall) is July (236mm).
The driest month (with the least rainfall) is November (56mm).
Average rainfall days in September
Nichihara, Japan
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is July (24.3 days).
The month with the least rainy days is May (12.9 days).
Average snowfall in September
Nichihara, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (74mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Nichihara, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Nichihara, Japan
- Average daylight in September: 12h and 24min
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: 8h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Nichihara, Japan
- Average sunshine days in September: 8.9 days
The month with the most sunshine days is May (15.7 days).
The month with the least sunshine days is July (4.8 days).
Average UV index in September
Nichihara, 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
Nichihara, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are May and August (Cloud cover 35).
Average visibility in September
Nichihara, Japan
- Average visibility in September: 9km
The months with the highest visibility are October and November (10km).
The month with the lowest visibility is July (8km).
