September weather forecastNarusawa, Japan
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Narusawa, Japan, with temperature in the range of an average high of 22.6°C (72.7°F) and an average low of 13.9°C (57°F).Temperature
With September's onset, the weather reveals a slight temperature decrease, transitioning from a warm 26.9°C (80.4°F) in August to a pleasant 22.6°C (72.7°F). Throughout September, the average low-temperature records at a mild 13.9°C (57°F).Humidity
In September, the average relative humidity is 83%.Rainfall
In September, in Narusawa, the rain falls for 22.1 days. Throughout September, 123mm (4.84") of precipitation is accumulated. Throughout the year, there are 204.8 rainfall days, and 1221mm (48.07") of precipitation is accumulated.Snowfall
In Narusawa, snow does not fall in June through September.Daylight
In September, the average length of the day in Narusawa is 12h and 25min.On the first day of the month, sunrise is at 05:17 and sunset at 18:12. On the last day of September, in Narusawa, sunrise is at 05:39 and sunset at 17:30 JST.
Sunshine
The average sunshine in September in Narusawa is 8h.UV index
The average daily maximum UV index in September in Narusawa is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Guard yourself - Avoiding sunburn is suggested. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Narusawa, Japan
- Average high temperature in September: 22.6°C
The warmest month (with the highest average high temperature) is August (26.9°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in September: 13.9°C
The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is January (-5.7°C).
Average pressure in September
Narusawa, Japan
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is November (1018.6mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Narusawa, Japan
- Average wind speed in September: 6.1km/h
The windiest month (with the highest average wind speed) is January (8.3km/h).
The calmest month (with the lowest average wind speed) is August (5.5km/h).
Average humidity in September
Narusawa, Japan
- Average humidity in September: 83%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is January (70%).
Average rainfall in September
Narusawa, Japan
- Average rainfall in September: 123mm
The wettest month (with the highest rainfall) is July (206mm).
The driest month (with the least rainfall) is January (37mm).
Average rainfall days in September
Narusawa, Japan
- Average rainfall days in September: 22.1 days
The month with the highest number of rainy days is August (28.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Narusawa, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is March (284mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Narusawa, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Narusawa, Japan
- Average daylight in September: 12h and 24min
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 0min
The month with the most sunshine is May (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).
Average sunshine days in September
Narusawa, Japan
- Average sunshine days in September: 5.2 days
The month with the most sunshine days is December (17.8 days).
The month with the least sunshine days is July (1.7 days).
Average UV index in September
Narusawa, Japan
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Narusawa, Japan
- Average cloud cover in September: 48
The months with the most cloud cover are June and July (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 25).
Average visibility in September
Narusawa, Japan
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April, May, November and December (9km).
The month with the lowest visibility is September (7km).
