September weather forecastYachimata, Japan
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Yachimata, Japan, with an average temperature varying between 22°C (71.6°F) and 26.4°C (79.5°F).Temperature
Yachimata's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's 29.9°C (85.8°F) to a still warm 26.4°C (79.5°F). In Yachimata, the nightly September temperatures experience a slight descent from daily highs to an average low of 22°C (71.6°F).Humidity
In Yachimata, the average relative humidity in September is 77%.Rainfall
In Yachimata, in September, during 18.5 rainfall days, 130mm (5.12") of precipitation is typically accumulated. In Yachimata, Japan, during the entire year, the rain falls for 191.3 days and collects up to 1095mm (43.11") of precipitation.Snowfall
In Yachimata, snow does not fall in March through December.Daylight
In Yachimata, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 05:10 and sunset at 18:06. On the last day of the month, sunrise is at 05:32 and sunset at 17:24 JST.
Sunshine
In Yachimata, the average sunshine in September is 7.7h.UV index
In Yachimata, Japan, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 6 during September translates into the following directions:
Resist extreme sun exposure. Guarding against solar damage is essential. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yachimata, Japan
- Average high temperature in September: 26.4°C
The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in September: 22°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 (4.2°C).
Average pressure in September
Yachimata, Japan
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Yachimata, Japan
- Average wind speed in September: 14.4km/h
The windiest month (with the highest average wind speed) is March (17.7km/h).
The calmest month (with the lowest average wind speed) is June (13.4km/h).
Average humidity in September
Yachimata, Japan
- Average humidity in September: 77%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is January (61%).
Average rainfall in September
Yachimata, Japan
- Average rainfall in September: 130mm
The wettest month (with the highest rainfall) is October (149mm).
The driest month (with the least rainfall) is January (50mm).
Average rainfall days in September
Yachimata, Japan
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is June (19.2 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Yachimata, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (17mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Yachimata, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 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
Yachimata, 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 48min).
- Average sunshine in September: 7h and 42min
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 18min).
Average sunshine days in September
Yachimata, Japan
- Average sunshine days in September: 7.9 days
The month with the most sunshine days is January (18.8 days).
The months with the least sunshine days are June and September (7.9 days).
Average UV index in September
Yachimata, Japan
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 3).
Average cloud cover in September
Yachimata, Japan
- Average cloud cover in September: 40
The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 31).
Average visibility in September
Yachimata, 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).
