September weather forecastOkegawa, Japan
September weather for Okegawa, Japan: The first month of the autumn, September, is still a warm month in Okegawa, Japan, with an average temperature varying between 27.8°C (82°F) and 20.8°C (69.4°F). In Okegawa, Japan, in September, it is raining for 10.3 days, with typically 33mm (1.3") of accumulated precipitation.
September
Weather in September
The first month of the autumn, September, is still a warm month in Okegawa, Japan, with an average temperature varying between 27.8°C (82°F) and 20.8°C (69.4°F).Temperature
In September, the average high-temperature marginally decreases from a tropical 32.3°C (90.1°F) in August to a warm 27.8°C (82°F). During September, an average low-temperature of 20.8°C (69.4°F) is observed in Okegawa.Heat index
September's mean heat index is calculated to be a tropical 30°C (86°F). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.Evaluating the heat index requires understanding its values in the shade and with gentle winds. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
In Okegawa, the average relative humidity in September is 71%.Rainfall
September is the month with the most rainfall. Rain falls for 10.3 days and accumulates 33mm (1.3") of precipitation.Snowfall
April through December are months without snowfall in Okegawa.Daylight
In Okegawa, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 05:13 and sunset at 18:09. On the last day of September, sunrise is at 05:36 and sunset at 17:27 JST.
Sunshine
In September, the average sunshine in Okegawa is 7.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The average daily UV index of 5 in September transforms into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Okegawa, Japan
- Average high temperature in September: 27.8°C
The warmest month (with the highest average high temperature) is August (32.3°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in September: 20.8°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure in September
Okegawa, Japan
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Okegawa, Japan
- Average wind speed in September: 9.4km/h
The windiest months (with the highest average wind speed) are February and April (11.5km/h).
The calmest month (with the lowest average wind speed) is July (8.8km/h).
Average humidity in September
Okegawa, Japan
- Average humidity in September: 71%
The months with the highest relative humidity are June and July (73%).
The month with the lowest relative humidity is January (58%).
Average rainfall in September
Okegawa, Japan
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is September (33mm).
The driest months (with the least rainfall) are February and December (6mm).
Average rainfall days in September
Okegawa, Japan
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is September (10.3 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in September
Okegawa, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Okegawa, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Okegawa, 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 48min).
- Average sunshine in September: 7h and 24min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days in September
Okegawa, Japan
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is June (16.9 days).
Average UV index in September
Okegawa, Japan
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Okegawa, Japan
- Average cloud cover in September: 45
The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 27).
Average visibility in September
Okegawa, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, October, November and December (10km).
The months with the lowest visibility are June, July, August and September (9km).
