September weather forecastTomoyose, Japan
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Tomoyose, Japan, with an average temperature ranging between min 27.3°C (81.1°F) and max 28.5°C (83.3°F).Temperature
August's transformation into September witnesses an average high-temperature of a still warm 28.5°C (83.3°F), noting a minor change from the preceding month. During the month of September, Tomoyose identifies an average nighttime low-temperature of 27.3°C (81.1°F), slightly lower than its daytime counterpart.Heat index
In September, the heat index is appraised at a tropical 33°C (91.4°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Heat index's context suggests values are appropriate for shady areas and slight breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
The average relative humidity in September is 79%.Rainfall
In Tomoyose, Japan, in September, during 20.1 rainfall days, 139mm (5.47") of precipitation is typically accumulated. In Tomoyose, during the entire year, the rain falls for 227.4 days and collects up to 1405mm (55.31") of precipitation.Daylight
In Tomoyose, the average length of the day in September is 12h and 19min.On the first day of September, sunrise is at 06:09 and sunset at 18:48. On the last day of the month, sunrise is at 06:21 and sunset at 18:16 JST.
Sunshine
In Tomoyose, the average sunshine in September is 8.4h.UV index
June through September, with an average maximum UV index of 7, are months with the highest UV index in Tomoyose, Japan. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 7 in September translates into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Tomoyose, Japan
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (18.9°C).
- Average low temperature in September: 27.3°C
The month with the highest average low temperature is August (28.3°C).
The coldest month (with the lowest average low temperature) is January (17°C).
Average pressure in September
Tomoyose, Japan
- Average pressure in September: 1009mbar
The month with the highest atmospheric pressure is January (1020.8mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).
Average wind speed in September
Tomoyose, Japan
- Average wind speed in September: 22.9km/h
The windiest month (with the highest average wind speed) is December (28.4km/h).
The calmest month (with the lowest average wind speed) is May (20.1km/h).
Average humidity in September
Tomoyose, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is June (86%).
The month with the lowest relative humidity is January (72%).
Average rainfall in September
Tomoyose, Japan
- Average rainfall in September: 139mm
The wettest month (with the highest rainfall) is June (201mm).
The driest month (with the least rainfall) is February (59mm).
Average rainfall days in September
Tomoyose, Japan
- Average rainfall days in September: 20.1 days
The month with the highest number of rainy days is June (21.5 days).
The month with the least rainy days is July (16.4 days).
Average daylight in September /
Average sunshine in September
Tomoyose, Japan
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Tomoyose, Japan
- Average sunshine days in September: 7.3 days
The month with the most sunshine days is July (11.9 days).
The month with the least sunshine days is December (5.7 days).
Average UV index in September
Tomoyose, Japan
- Average UV index in September: 7
The months with the highest UV index are June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Tomoyose, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Tomoyose, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
