September weather forecastKotari, Japan
September
Weather in September
September, the first month of the autumn in Kotari, is also a moderately hot month, with an average temperature ranging between max 26.1°C (79°F) and min 18.3°C (64.9°F).Temperature
Setting in of September comes with a decrease in the average high-temperature, moving from a hot 31.3°C (88.3°F) in August to a warm 26.1°C (79°F). The average temperature during September nights is registered at a comfortable 18.3°C (64.9°F).Humidity
The average relative humidity in September is 80%.Rainfall
In Kotari, in September, it is raining for 15.6 days, with typically 61mm (2.4") of accumulated precipitation. In Kotari, Japan, during the entire year, the rain falls for 154.2 days and collects up to 647mm (25.47") of precipitation.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 05:30 and sunset at 18:24. On the last day of September, sunrise is at 05:51 and sunset at 17:42 JST.
Sunshine
The average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Kotari is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 5 suggests this advice:
Take precautions - Protection against sunburn is recommended. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kotari, Japan
- Average high temperature in September: 26.1°C
The warmest month (with the highest average high temperature) is August (31.3°C).
The month with the lowest average high temperature is January (6.2°C).
- Average low temperature in September: 18.3°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 (0.3°C).
Average pressure in September
Kotari, Japan
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is February (1019.7mbar).
The month with the lowest atmospheric pressure is June (1008.9mbar).
Average wind speed in September
Kotari, Japan
- Average wind speed in September: 7.4km/h
The windiest month (with the highest average wind speed) is March (8.6km/h).
The calmest months (with the lowest average wind speed) are June and July (6.9km/h).
Average humidity in September
Kotari, Japan
- Average humidity in September: 80%
The months with the highest relative humidity are July and October (81%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Kotari, Japan
- Average rainfall in September: 61mm
The wettest month (with the highest rainfall) is July (134mm).
The driest months (with the least rainfall) are January and November (18mm).
Average rainfall days in September
Kotari, Japan
- Average rainfall days in September: 15.6 days
The month with the highest number of rainy days is July (21.4 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in September
Kotari, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Kotari, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.5 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
Kotari, Japan
- Average daylight in September: 12h and 24min
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 54min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Kotari, Japan
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in September
Kotari, 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, February and December (UV index 2).
Average cloud cover in September
Kotari, Japan
- Average cloud cover in September: 46
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are May and August (Cloud cover 40).
Average visibility in September
Kotari, Japan
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (8km).
The month with the lowest visibility is July (7km).
