September weather forecastSesoko, Japan
September
Weather in September
September, the first month of the autumn in Sesoko, is also a moderately hot month, with temperature in the range of an average high of 28.5°C (83.3°F) and an average low of 27.1°C (80.8°F).Temperature
The arrival of September is marked by an average high-temperature of a still warm 28.5°C (83.3°F), bearing a close resemblance to August. Throughout September, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 27.1°C (80.8°F).Heat index
September's heat index is estimated at a tropical 33°C (91.4°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Heat index details are generally centered around shaded locations and a mild breeze. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
In Sesoko, the average relative humidity in September is 79%.Rainfall
In Sesoko, during September, the rain falls for 22.9 days and regularly aggregates up to 154mm (6.06") of precipitation. In Sesoko, during the entire year, the rain falls for 240.8 days and collects up to 1563mm (61.54") of precipitation.Daylight
The average length of the day in September in Sesoko is 12h and 19min.On the first day of September, sunrise is at 06:08 and sunset at 18:48. On the last day of the month, sunrise is at 06:20 and sunset at 18:16 JST.
Sunshine
In September, the average sunshine in Sesoko is 8.1h.UV index
June through September, with an average maximum UV index of 7, are months with the highest UV index in Sesoko. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sesoko, Japan
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is August (29.5°C).
The month with the lowest average high temperature is January (18.6°C).
- Average low temperature in September: 27.1°C
The month with the highest average low temperature is August (28°C).
The coldest month (with the lowest average low temperature) is January (16.7°C).
Average pressure in September
Sesoko, Japan
- Average pressure in September: 1009.2mbar
The month with the highest atmospheric pressure is January (1021.1mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).
Average wind speed in September
Sesoko, Japan
- Average wind speed in September: 22.9km/h
The windiest month (with the highest average wind speed) is December (28.3km/h).
The calmest month (with the lowest average wind speed) is May (20.2km/h).
Average humidity in September
Sesoko, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is June (86%).
The months with the lowest relative humidity are January and December (72%).
Average rainfall in September
Sesoko, Japan
- Average rainfall in September: 154mm
The wettest month (with the highest rainfall) is June (241mm).
The driest month (with the least rainfall) is January (64mm).
Average rainfall days in September
Sesoko, Japan
- Average rainfall days in September: 22.9 days
The month with the highest number of rainy days is June (23.3 days).
The month with the least rainy days is November (17.6 days).
Average daylight in September /
Average sunshine in September
Sesoko, 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 6min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Sesoko, Japan
- Average sunshine days in September: 3.8 days
The months with the most sunshine days are April and May (9.6 days).
The month with the least sunshine days is September (3.8 days).
Average UV index in September
Sesoko, Japan
- Average UV index in September: 7
The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in September
Sesoko, Japan
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Sesoko, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is May (9km).
