September weather forecastIsozaki, Japan
September
Weather in September
The first month of the autumn, September, is still a warm month in Isozaki, Japan, with temperature in the range of an average high of 24°C (75.2°F) and an average low of 18.3°C (64.9°F).Temperature
The arrival of September corresponds with a light shift in temperature, down from a warm 27.7°C (81.9°F) in August to a still moderately hot 24°C (75.2°F). Nighttime temperature dips to a mean of 18.3°C (64.9°F) during September.Humidity
The average relative humidity in September is 79%.Rainfall
In Isozaki, in September, it is raining for 12.5 days, with typically 74mm (2.91") of accumulated precipitation. In Isozaki, during the entire year, the rain falls for 133.1 days and collects up to 706mm (27.8") of precipitation.Snowfall
In Isozaki, snow does not fall in May through November.Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 05:05 and sunset at 18:06. On the last day of September, in Isozaki, sunrise is at 05:30 and sunset at 17:20 JST.
Sunshine
The average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September in Isozaki is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Act with care - The need to guard against sun damage is communicated. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Isozaki, Japan
- Average high temperature in September: 24°C
The warmest month (with the highest average high temperature) is August (27.7°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in September: 18.3°C
The month with the highest average low temperature is August (21.7°C).
The coldest month (with the lowest average low temperature) is February (-1°C).
Average pressure in September
Isozaki, Japan
- Average pressure in September: 1014mbar
The month with the highest atmospheric pressure is November (1018.6mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in September
Isozaki, Japan
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is January (15.4km/h).
The calmest month (with the lowest average wind speed) is July (9km/h).
Average humidity in September
Isozaki, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is April (70%).
Average rainfall in September
Isozaki, Japan
- Average rainfall in September: 74mm
The wettest month (with the highest rainfall) is October (105mm).
The driest month (with the least rainfall) is February (23mm).
Average rainfall days in September
Isozaki, Japan
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Isozaki, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (62mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Isozaki, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 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
Isozaki, 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 30min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is May (Average sunshine: 9h and 30min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in September
Isozaki, Japan
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is May (21.3 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in September
Isozaki, Japan
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in September
Isozaki, Japan
- Average cloud cover in September: 39
The month with the most cloud cover is July (Cloud cover 48).
The months with the least cloud cover are May and November (Cloud cover 36).
Average visibility in September
Isozaki, Japan
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, October, November and December (10km).
The months with the lowest visibility are January, May, June, July, August and September (9km).
