September weather forecastKokuba, Japan
September
Weather in September
The first month of the autumn, September, is still a warm month in Kokuba, Japan, with an average temperature fluctuating between 27.5°C (81.5°F) and 28.5°C (83.3°F).Temperature
The advent of September presents an average high-temperature of a still warm 28.5°C (83.3°F), maintaining a close correlation with the preceding month. During September, the nighttime temperatures align closely with the daytime averages, measuring a still warm 27.5°C (81.5°F).Heat index
For September, the heat index is computed to be a hot 33°C (91.4°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.Keep in mind the heat index values are meant for areas in shade and with light wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
The average relative humidity in September is 79%.Rainfall
In Kokuba, in September, it is raining for 19.4 days, with typically 126mm (4.96") of accumulated precipitation. In Kokuba, during the entire year, the rain falls for 226.7 days and collects up to 1392mm (54.8") of precipitation.Daylight
In September, the average length of the day in Kokuba, Japan, is 12h and 19min.On the first day of the month, sunrise is at 06:09 and sunset at 18:49. On the last day of September, in Kokuba, sunrise is at 06:21 and sunset at 18:17 JST.
Sunshine
In Kokuba, the average sunshine in September is 8.6h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 7 during September translates into the following guidance:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kokuba, Japan
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (18.9°C).
- Average low temperature in September: 27.5°C
The month with the highest average low temperature is August (28.3°C).
The coldest month (with the lowest average low temperature) is January (17°C).
Average pressure in September
Kokuba, Japan
- Average pressure in September: 1009.1mbar
The month with the highest atmospheric pressure is January (1020.8mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).
Average wind speed in September
Kokuba, Japan
- Average wind speed in September: 23.3km/h
The windiest month (with the highest average wind speed) is December (28.4km/h).
The calmest month (with the lowest average wind speed) is May (20.1km/h).
Average humidity in September
Kokuba, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is June (86%).
The month with the lowest relative humidity is January (72%).
Average rainfall in September
Kokuba, Japan
- Average rainfall in September: 126mm
The wettest month (with the highest rainfall) is June (201mm).
The driest month (with the least rainfall) is February (59mm).
Average rainfall days in September
Kokuba, Japan
- Average rainfall days in September: 19.4 days
The month with the highest number of rainy days is June (21.5 days).
The month with the least rainy days is July (16.4 days).
Average daylight in September /
Average sunshine in September
Kokuba, Japan
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Kokuba, Japan
- Average sunshine days in September: 7.6 days
The month with the most sunshine days is July (11.9 days).
The month with the least sunshine days is December (5.7 days).
Average UV index in September
Kokuba, Japan
- Average UV index in September: 7
The months with the highest UV index are June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Kokuba, Japan
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Kokuba, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
