September weather forecastUtsunomiya, Japan
September
Weather in September
September in Utsunomiya signals the end of the hot season as the temperatures begin to retreat. However, the humidity remains slightly elevated, presenting a muggy atmosphere throughout the city. A gradual shift from sunny days to cooler nights is observable, signaling the incoming autumn season. The month of September witnesses an annual maximum of 220mm (8.66") of rainfall, dispersed over 14.2 days. Despite this, September retains a sense of summer’s warmth with its balmy days and offers a pleasant precursor to Utsunomiya’s mild autumn.Temperature
In September, the average high-temperature marginally decreases from a tropical 30.5°C (86.9°F) in August to a warm 26.4°C (79.5°F). Throughout September, the average low-temperature records at an enjoyable 18.4°C (65.1°F).Humidity
The average relative humidity in September is 79%.Rainfall
September is the month with the most rainfall. Rain falls for 14.2 days and accumulates 220mm (8.66") of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 05:11 and sunset at 18:09. On the last day of the month, sunrise is at 05:34 and sunset at 17:25 JST.
Sunshine
The months with the least sunshine are June, July and September, with an average of 3.7h of sunshine.Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Utsunomiya, Japan
- Average high temperature in September: 26.4°C
The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in September: 18.4°C
The month with the highest average low temperature is August (22.2°C).
The coldest month (with the lowest average low temperature) is January (-2.7°C).
Average humidity in September
Utsunomiya, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is February (60%).
Average rainfall in September
Utsunomiya, Japan
- Average rainfall in September: 220.4mm
The wettest month (with the highest rainfall) is September (220.4mm).
The driest month (with the least rainfall) is January (33.9mm).
Average rainfall days in September
Utsunomiya, Japan
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is December (4 days).
Average snowfall in September
Utsunomiya, Japan
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (100mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Utsunomiya, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Utsunomiya, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 3h and 42min
The month with the most sunshine is February (Average sunshine: 6h and 42min).
The months with the least sunshine are June, July and September (Average sunshine: 3h and 42min).





