Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift from August to September is characterized by an average high-temperature of a still warm 28.6°C (83.5°F), not significantly different from the 29.5°C (85.1°F) of August. In Shimabuku, the average low-temperature during September nights tends to settle at a still moderately hot 27.4°C (81.3°F), indicating a slight drop from the daytime peak.Heat index
The heat index for September is calculated to be a tropical 33°C (91.4°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
The average relative humidity in September in Shimabuku is 79%.Rainfall
In September, the rain falls for 19.1 days. Throughout September, 114mm (4.49") of precipitation is accumulated. Throughout the year, in Shimabuku, there are 215.5 rainfall days, and 1300mm (51.18") of precipitation is accumulated.Daylight
The average length of the day in September in Shimabuku is 12h and 19min.On the first day of the month, sunrise is at 06:08 and sunset at 18:48. On the last day of September, in Shimabuku, sunrise is at 06:20 and sunset at 18:16 JST.
Sunshine
In September, the average sunshine is 8.6h.UV index
The months with the highest UV index in Shimabuku are June through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 7 in September leads to these recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Frequently asked questions
How hot is September in Shimabuku?
What is the average humidity in September in Shimabuku?
How much does it rain in Shimabuku in September?
What is the average length of the day in September in Shimabuku?
What time are sunrise and sunset in September in Shimabuku?
How long on average sun shines in September in Shimabuku?
What are the months with the highest UV index in Shimabuku?
How high is the UV index in September in Shimabuku?
Average temperature in September
Shimabuku, Japan
- Average high temperature in September: 28.6°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 (18.8°C).
- Average low temperature in September: 27.4°C
The month with the highest average low temperature is August (28.2°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure in September
Shimabuku, Japan
- Average pressure in September: 1009.1mbar
The month with the highest atmospheric pressure is January (1020.9mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).
Average wind speed in September
Shimabuku, Japan
- Average wind speed in September: 22.6km/h
The windiest month (with the highest average wind speed) is December (27.6km/h).
The calmest month (with the lowest average wind speed) is May (19.5km/h).
Average humidity in September
Shimabuku, 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
Shimabuku, Japan
- Average rainfall in September: 114mm
The wettest month (with the highest rainfall) is June (198mm).
The driest months (with the least rainfall) are January and February (53mm).
Average rainfall days in September
Shimabuku, Japan
- Average rainfall days in September: 19.1 days
The month with the highest number of rainy days is October (19.7 days).
The month with the least rainy days is July (16.1 days).
Average daylight in September /
Average sunshine in September
Shimabuku, Japan
- Average daylight in September: 12h and 2min
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 4min
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
Shimabuku, Japan
- Average sunshine days in September: 7.1 days
The month with the most sunshine days is July (12.6 days).
The month with the least sunshine days is September (7.1 days).
Average UV index in September
Shimabuku, 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
Shimabuku, 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
Shimabuku, 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).
Shimabuku, Japan
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