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 sea temperature 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
A moderate decline in average high-temperatures is noted in September, moving from a warm 29.2°C (84.6°F) in August to a still moderately hot 26.2°C (79.2°F). Sumoto's nighttime temperature in September consistently rests at a still moderately hot 23.1°C (73.6°F).Humidity
In Sumoto, the average relative humidity in September is 75%.Rainfall
In Sumoto, during September, the rain falls for 16.9 days and regularly aggregates up to 156mm (6.14") of precipitation. In Sumoto, during the entire year, the rain falls for 195.3 days and collects up to 1230mm (48.43") of precipitation.Snowfall
In Sumoto, Japan, snow does not fall in March through December.Sea temperature
In Sumoto, Japan, in September, the average water temperature is 26.8°C (80.2°F).Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for all water activities, offering enjoyment without causing discomfort over extended periods.
Daylight
In September, the average length of the day in Sumoto is 12h and 24min.On the first day of September, sunrise is at 05:33 and sunset at 18:26. On the last day of the month, sunrise is at 05:54 and sunset at 17:46 JST.
Sunshine
The average sunshine in September in Sumoto is 9.2h.UV index
The average daily maximum UV index in September in Sumoto, Japan, is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Warning! The Sun's UV rays intensify with reflections from sand and water.
Frequently asked questions
What is the usual temperature for Sumoto in September?
What is the average humidity in September in Sumoto?
How many days does it rain in September in Sumoto?
When it does not snow in Sumoto?
How warm is the water in September in Sumoto?
How many hours of daylight does Sumoto have in September?
When are sunrise and sunset in September in Sumoto?
How many hours of sunshine does Sumoto have in September?
How high is the UV index in September in Sumoto?
Average temperature in September
Sumoto, Japan
- Average high temperature in September: 26.2°C
The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (9.7°C).
- Average low temperature in September: 23.1°C
The month with the highest average low temperature is August (26.1°C).
The coldest month (with the lowest average low temperature) is January (6.4°C).
Average pressure in September
Sumoto, Japan
- Average pressure in September: 1012.6mbar
The months with the highest atmospheric pressure are January and February (1019.9mbar).
The month with the lowest atmospheric pressure is June (1008.7mbar).
Average wind speed in September
Sumoto, Japan
- Average wind speed in September: 14.5km/h
The windiest month (with the highest average wind speed) is January (23.6km/h).
The calmest month (with the lowest average wind speed) is June (12.5km/h).
Average humidity in September
Sumoto, Japan
- Average humidity in September: 75%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is January (67%).
Average rainfall in September
Sumoto, Japan
- Average rainfall in September: 156mm
The wettest month (with the highest rainfall) is July (190mm).
The driest month (with the least rainfall) is January (44mm).
Average rainfall days in September
Sumoto, Japan
- Average rainfall days in September: 16.9 days
The month with the highest number of rainy days is July (20.7 days).
The months with the least rainy days are February and May (13.2 days).
Average snowfall in September
Sumoto, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Sumoto, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Sumoto, Japan
- Average sea temperature in September: 26.8°C
The best month for swimming (with the highest average sea temperature) is August (27.8°C).
The coldest month (with the lowest average sea temperature) is February (15.7°C).
Average daylight in September /
Average sunshine in September
Sumoto, 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: 9h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 18min).
Average sunshine days in September
Sumoto, Japan
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is May (16.1 days).
The months with the least sunshine days are August and December (7.8 days).
Average UV index in September
Sumoto, Japan
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Sumoto, Japan
- Average cloud cover in September: 35
The months with the most cloud cover are January and February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Sumoto, 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).
Sumoto, Japan
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