September weather forecastIbaruma, Japan
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Ibaruma, Japan, with temperature in the range of an average high of 28.5°C (83.3°F) and an average low of 27.3°C (81.1°F).Temperature
Ibaruma's average high-temperature in September is a still warm 28.5°C (83.3°F), indicating a subtle variation from August. Ibaruma sees a minor drop to an average minimum temperature of 27.3°C (81.1°F) during the night in the month of September.Heat index
For most parts of September, the heat index is evaluated at a tropical 33°C (91.4°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humidity
In September, the average relative humidity is 79%.Rainfall
In Ibaruma, in September, during 20 rainfall days, 134mm (5.28") of precipitation is typically accumulated. Throughout the year, there are 228.7 rainfall days, and 1180mm (46.46") of precipitation is accumulated.Daylight
In Ibaruma, the average length of the day in September is 12h and 18min.On the first day of the month, sunrise is at 06:24 and sunset at 19:01. On the last day of September, in Ibaruma, sunrise is at 06:34 and sunset at 18:31 JST.
Sunshine
The average sunshine in September in Ibaruma is 8.1h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 7 in September suggests the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ibaruma, Japan
- Average high temperature in September: 28.5°C
The warmest months (with the highest average high temperature) are July and August (29.3°C).
The month with the lowest average high temperature is January (20.6°C).
- Average low temperature in September: 27.3°C
The month with the highest average low temperature is July (28.4°C).
The coldest month (with the lowest average low temperature) is January (18.7°C).
Average pressure in September
Ibaruma, Japan
- Average pressure in September: 1008.7mbar
The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is August (1005.6mbar).
Average wind speed in September
Ibaruma, Japan
- Average wind speed in September: 24.9km/h
The windiest month (with the highest average wind speed) is December (32.9km/h).
The calmest month (with the lowest average wind speed) is May (20.4km/h).
Average humidity in September
Ibaruma, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are January and December (76%).
Average rainfall in September
Ibaruma, Japan
- Average rainfall in September: 134mm
The wettest month (with the highest rainfall) is August (217mm).
The driest month (with the least rainfall) is March (50mm).
Average rainfall days in September
Ibaruma, Japan
- Average rainfall days in September: 20 days
The month with the highest number of rainy days is August (22.1 days).
The month with the least rainy days is April (16.7 days).
Average daylight in September /
Average sunshine in September
Ibaruma, Japan
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 42min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in September
Ibaruma, Japan
- Average sunshine days in September: 7.7 days
The month with the most sunshine days is June (11.8 days).
The month with the least sunshine days is November (6.2 days).
Average UV index in September
Ibaruma, Japan
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 5).
Average cloud cover in September
Ibaruma, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Ibaruma, Japan
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
