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 modest decline in the average high-temperature is seen during September, decreasing from a tropical 31.6°C (88.9°F) in August to a moderately hot 26.9°C (80.4°F). Seto's nighttime temperature in September falls to an average of 18.5°C (65.3°F).Humidity
In Seto, the average relative humidity in September is 76%.Rainfall
In Seto, in September, it is raining for 14.1 days, with typically 107mm (4.21") of accumulated precipitation. In Seto, during the entire year, the rain falls for 170.2 days and collects up to 1156mm (45.51") of precipitation.Snowfall
May through November are months without snowfall.Daylight
In Seto, Japan, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 05:24 and sunset at 18:18. On the last day of September, in Seto, Japan, sunrise is at 05:45 and sunset at 17:37 JST.
Sunshine
In Seto, the average sunshine in September is 9h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 5 in September transforms into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Seto?
What is the average humidity in September in Seto?
How many days does it rain in September in Seto?
When it does not snow in Seto?
What is the average length of the day in September in Seto?
When is the sunrise / sunset in September in Seto?
How many hours of sunshine does Seto have in September?
What is the UV index reading in September in Seto?
Average temperature in September
Seto, Japan
- Average high temperature in September: 26.9°C
The warmest month (with the highest average high temperature) is August (31.6°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in September: 18.5°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 (-0.7°C).
Average pressure in September
Seto, Japan
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is November (1019.1mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Seto, Japan
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is March (9.4km/h).
The calmest month (with the lowest average wind speed) is August (6.8km/h).
Average humidity in September
Seto, Japan
- Average humidity in September: 76%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Seto, Japan
- Average rainfall in September: 107mm
The wettest month (with the highest rainfall) is July (179mm).
The driest month (with the least rainfall) is January (41mm).
Average rainfall days in September
Seto, Japan
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is February (10.7 days).
Average snowfall in September
Seto, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (47mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Seto, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Seto, 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: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in September
Seto, Japan
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Seto, 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 and December (UV index 2).
Average cloud cover in September
Seto, Japan
- Average cloud cover in September: 35
The month with the most cloud cover is July (Cloud cover 45).
The month with the least cloud cover is November (Cloud cover 30).
Average visibility in September
Seto, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (9km).
The month with the lowest visibility is July (8km).
