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
September ushers in a minute temperature change, with average high-temperatures reducing from August's 29.7°C (85.5°F) to a still warm 26°C (78.8°F). Nagatomachi's nighttime temperatures in September display a slight drop from daytime highs, averaging to a pleasant 21.4°C (70.5°F).Humidity
In September, the average relative humidity is 78%.Rainfall
In Nagatomachi, Japan, in September, it is raining for 15 days, with typically 84mm (3.31") of accumulated precipitation. Throughout the year, there are 176.5 rainfall days, and 1039mm (40.91") of precipitation is accumulated.Snowfall
March through November are months without snowfall.Daylight
In Nagatomachi, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 05:50 and sunset at 18:42. On the last day of September, sunrise is at 06:10 and sunset at 18:02 JST.
Sunshine
The average sunshine in September is 8.5h.UV index
In Nagatomachi, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 6 suggests these recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September in Nagatomachi?
How many days does it rain in September?
When it does not snow?
How many hours of daylight does Nagatomachi have in September?
When are sunrise and sunset in September in Nagatomachi?
How many hours of sunshine does Nagatomachi have in September?
What is the UV index intensity in September?
Average temperature in September
Nagatomachi, Japan
- Average high temperature in September: 26°C
The warmest month (with the highest average high temperature) is August (29.7°C).
The month with the lowest average high temperature is January (8.8°C).
- Average low temperature in September: 21.4°C
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).
Average pressure in September
Nagatomachi, Japan
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is January (1021.9mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).
Average wind speed in September
Nagatomachi, Japan
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is December (17.6km/h).
The calmest month (with the lowest average wind speed) is June (10.8km/h).
Average humidity in September
Nagatomachi, Japan
- Average humidity in September: 78%
The month with the highest relative humidity is July (85%).
The months with the lowest relative humidity are January, February and March (69%).
Average rainfall in September
Nagatomachi, Japan
- Average rainfall in September: 84mm
The wettest month (with the highest rainfall) is July (209mm).
The driest month (with the least rainfall) is January (44mm).
Average rainfall days in September
Nagatomachi, Japan
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is May (10.7 days).
Average snowfall in September
Nagatomachi, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (11mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Nagatomachi, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 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
Nagatomachi, 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: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Nagatomachi, Japan
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is May (18.8 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in September
Nagatomachi, 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 and December (UV index 2).
Average cloud cover in September
Nagatomachi, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Nagatomachi, Japan
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are January, May, June and July (9km).
Nagatomachi, Japan
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