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
A mild shift in the average high-temperature occurs in September, reducing from a warm 26.1°C (79°F) in August to an agreeable 21.5°C (70.7°F). The nighttime temperature, during September, averages of 12°C (53.6°F).Humidity
The months with the highest humidity are July and September, with an average relative humidity of 86%.Rainfall
In Tomono, during September, the rain falls for 15.5 days and regularly aggregates up to 89mm (3.5") of precipitation. Throughout the year, there are 193.2 rainfall days, and 926mm (36.46") of precipitation is accumulated.Snowfall
In Tomono, Japan, snow does not fall in May through October.Daylight
In Tomono, Japan, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 05:17 and sunset at 18:14. On the last day of September, sunrise is at 05:40 and sunset at 17:31 JST.
Sunshine
The average sunshine in September is 6.6h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 4 during September leads to these advisories:
Guard yourself - Avoiding sunburn is suggested. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Tomono in September?
What is the most humid month in Tomono?
What is the average humidity in September in Tomono?
How many days does it rain in September in Tomono?
When it does not snow in Tomono?
How many hours of daylight does Tomono have in September?
When is the sunrise / sunset in September in Tomono?
How long on average sun shines in September in Tomono?
What is the UV index reading in September in Tomono?
Average temperature in September
Tomono, Japan
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (-0.2°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).
Average pressure in September
Tomono, Japan
- Average pressure in September: 1013.7mbar
The month with the highest atmospheric pressure is November (1018.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Tomono, Japan
- Average wind speed in September: 6.7km/h
The windiest month (with the highest average wind speed) is January (9.5km/h).
The calmest month (with the lowest average wind speed) is August (5.8km/h).
Average humidity in September
Tomono, Japan
- Average humidity in September: 86%
The months with the highest relative humidity are July and September (86%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Tomono, Japan
- Average rainfall in September: 89mm
The wettest month (with the highest rainfall) is October (137mm).
The driest month (with the least rainfall) is December (43mm).
Average rainfall days in September
Tomono, Japan
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (13.3 days).
Average snowfall in September
Tomono, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (276mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Tomono, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (22 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Tomono, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is May (Average sunshine: 9h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in September
Tomono, Japan
- Average sunshine days in September: 13 days
The month with the most sunshine days is July (14.9 days).
The month with the least sunshine days is February (5.8 days).
Average UV index in September
Tomono, Japan
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Tomono, Japan
- Average cloud cover in September: 62
The month with the most cloud cover is September (Cloud cover 62).
The month with the least cloud cover is May (Cloud cover 44).
Average visibility in September
Tomono, Japan
- Average visibility in September: 6km
The months with the highest visibility are January, March, April, May and December (8km).
The months with the lowest visibility are July, August, September and October (6km).
