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
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's hot 30.6°C (87.1°F) to a warm 26.7°C (80.1°F). Throughout September nights, Tatsumi registers an average low-temperature of 21.3°C (70.3°F).Humidity
In September, the average relative humidity is 75%.Rainfall
The months with the most rainfall in Tatsumi are September and October, with an average 48mm (1.89") of precipitation.Snowfall
March through December are months without snowfall.Daylight
The average length of the day in September in Tatsumi is 12h and 25min.On the first day of the month, sunrise is at 05:12 and sunset at 18:08. On the last day of September, sunrise is at 05:34 and sunset at 17:26 JST.
Sunshine
In September, the average sunshine is 7.9h.UV index
In Tatsumi, 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 the ordinary person.Note: The UV index of 6 during September leads to these advisories:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Tatsumi in September?
What is the average humidity in September in Tatsumi?
What is the rainiest month in Tatsumi?
How many days does it rain in September in Tatsumi?
When it does not snow in Tatsumi?
What is the average length of the day in September in Tatsumi?
When is the sunrise / sunset in September in Tatsumi?
How many hours of sunshine does Tatsumi have in September?
What is the UV index intensity in September in Tatsumi?
Average temperature in September
Tatsumi, Japan
- Average high temperature in September: 26.7°C
The warmest month (with the highest average high temperature) is August (30.6°C).
The month with the lowest average high temperature is January (8.8°C).
- Average low temperature in September: 21.3°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 (3°C).
Average pressure in September
Tatsumi, Japan
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Tatsumi, Japan
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is April (15.6km/h).
The calmest month (with the lowest average wind speed) is November (12.3km/h).
Average humidity in September
Tatsumi, Japan
- Average humidity in September: 75%
The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (60%).
Average rainfall in September
Tatsumi, Japan
- Average rainfall in September: 48mm
The wettest months (with the highest rainfall) are September and October (48mm).
The driest month (with the least rainfall) is February (10mm).
Average rainfall days in September
Tatsumi, Japan
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Tatsumi, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Tatsumi, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 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
Tatsumi, 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 48min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in September
Tatsumi, Japan
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is January (25.4 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in September
Tatsumi, Japan
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Tatsumi, Japan
- Average cloud cover in September: 39
The months with the most cloud cover are June and October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 28).
Average visibility in September
Tatsumi, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
