September weather forecastYamagata, Japan
September weather for Yamagata, Japan: On the first day of September in Yamagata, Japan, sunrise is at 05:08 and sunset at 18:08. In Yamagata, Japan, in September, during 20 rainfall days, 134mm (5.28") of precipitation is typically accumulated.
September
Weather in September
Transitioning from summer to autumn, September’s weather in Yamagata is noticeable for its average temperature drop to 25°C (77°F). Days in September start to gradually become shorter, signaling the approaching autumn. Though the rainfall of 134mm (5.28") remains high, it is significantly less than that in August. The changing foliage colours from bright greens to warm browns and oranges hint at the arrival of October and quintessential autumn.Temperature
Start of September in Yamagata brings a shift in the average high-temperature, falling from August's tropical 30°C (86°F) to a warm 25°C (77°F). The low-temperature averages to an enjoyable 16°C (60.8°F) during the nights of September.Rainfall
In Yamagata, Japan, in September, during 20 rainfall days, 134mm (5.28") of precipitation is typically accumulated. In Yamagata, during the entire year, the rain falls for 260 days and collects up to 1125mm (44.29") of precipitation.Snowfall
May through October are months without snowfall in Yamagata.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 05:08 and sunset at 18:08. On the last day of September, sunrise is at 05:33 and sunset at 17:23 JST.
Sunshine
The average sunshine in September is 4h.UV index
In September, the average daily maximum UV index in Yamagata is 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 7 during September translates into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yamagata, Japan
- Average high temperature in September: 25°C
The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (3°C).
- Average low temperature in September: 16°C
The month with the highest average low temperature is August (20°C).
The coldest months (with the lowest average low temperature) are January and February (-4°C).
Average rainfall in September
Yamagata, Japan
- Average rainfall in September: 134mm
The wettest month (with the highest rainfall) is August (149mm).
The driest month (with the least rainfall) is March (67mm).
Average rainfall days in September
Yamagata, Japan
- Average rainfall days in September: 20 days
The month with the highest number of rainy days is January (29 days).
The month with the least rainy days is May (17 days).
Average snowfall in September
Yamagata, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (1630mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average daylight in September /
Average sunshine in September
Yamagata, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 4h
The month with the most sunshine is May (Average sunshine: 7h).
The month with the least sunshine is December (Average sunshine: 3h).
Average UV index in September
Yamagata, Japan
- Average UV index in September: 7
The month with the highest UV index is July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).
