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
September
Weather in September
Temperature
Hirakubo sees the arrival of September with an average high-temperature of a still warm 28.5°C (83.3°F), indicating a subtle variation from August. Hirakubo notes a steady average temperature of 27.3°C (81.1°F) during the nights of September.Heat index
For September, the heat index is evaluated at a tropical 33°C (91.4°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to 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
The average relative humidity in September is 79%.Rainfall
In September, the rain falls for 20 days. Throughout September, 134mm (5.28") of precipitation is accumulated. In Hirakubo, during the entire year, the rain falls for 228.7 days and collects up to 1180mm (46.46") of precipitation.Daylight
The average length of the day in September in Hirakubo is 12h and 18min.On the first day of the month, sunrise is at 06:23 and sunset at 19:01. On the last day of September, in Hirakubo, sunrise is at 06:34 and sunset at 18:30 JST.
Sunshine
The average sunshine in September in Hirakubo is 8.1h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index in Hirakubo. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In September, an average UV index of 7 transforms into the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Hirakubo?
What is the average humidity in September in Hirakubo?
How much does it rain in Hirakubo in September?
What is the average length of the day in September in Hirakubo?
When is the sunrise / sunset in September in Hirakubo?
How many hours of sunshine does Hirakubo have in September?
What are the months with the highest UV index in Hirakubo?
How high is the UV index in September in Hirakubo?
Average temperature in September
Hirakubo, 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
Hirakubo, 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
Hirakubo, 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
Hirakubo, 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
Hirakubo, 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
Hirakubo, 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
Hirakubo, Japan
- Average daylight in September: 12h and 2min
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 36min).
- Average sunshine in September: 8h and 1min
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
Hirakubo, 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
Hirakubo, 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
Hirakubo, 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
Hirakubo, 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).
