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 snowfall in September
- Average snowfall 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
September is characterized by a mild reduction in the average high-temperature, from a hot 32.5°C (90.5°F) in August to a warm 28.2°C (82.8°F). During September, the temperature is averaged to a low of 20.3°C (68.5°F) at night.Heat index
Throughout September, the heat index is calculated to be a hot 31°C (87.8°F). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.Remember that heat index calculations are made for conditions in the shade with light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
In Hirabari, the average relative humidity in September is 72%.Rainfall
In Hirabari, in September, during 14.9 rainfall days, 129mm (5.08") of precipitation is typically accumulated. In Hirabari, during the entire year, the rain falls for 158.5 days and collects up to 1122mm (44.17") of precipitation.Snowfall
April through November are months without snowfall in Hirabari.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 05:24 and sunset at 18:19. On the last day of September, sunrise is at 05:46 and sunset at 17:37 JST.
Sunshine
In Hirabari, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Frequently asked questions
How hot is September in Hirabari?
What is the average humidity in September in Hirabari?
How much does it rain in Hirabari in September?
When it does not snow in Hirabari?
What is the average length of the day in September in Hirabari?
When are sunrise and sunset in September in Hirabari?
How many hours of sunshine does Hirabari have in September?
What is the UV index intensity in September in Hirabari?
Average temperature in September
Hirabari, Japan
- Average high temperature in September: 28.2°C
The warmest month (with the highest average high temperature) is August (32.5°C).
The month with the lowest average high temperature is January (7.5°C).
- Average low temperature in September: 20.3°C
The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).
Average pressure in September
Hirabari, Japan
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is November (1019.1mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Hirabari, Japan
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is March (10.2km/h).
The calmest months (with the lowest average wind speed) are June and July (7.7km/h).
Average humidity in September
Hirabari, Japan
- Average humidity in September: 72%
The month with the highest relative humidity is July (78%).
The month with the lowest relative humidity is May (68%).
Average rainfall in September
Hirabari, Japan
- Average rainfall in September: 129mm
The wettest month (with the highest rainfall) is July (195mm).
The driest month (with the least rainfall) is January (34mm).
Average rainfall days in September
Hirabari, Japan
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in September
Hirabari, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (26mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Hirabari, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4 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
Hirabari, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in September
Hirabari, Japan
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in September
Hirabari, Japan
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Hirabari, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is July (Cloud cover 44).
The month with the least cloud cover is November (Cloud cover 31).
Average visibility in September
Hirabari, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (9km).
The month with the lowest visibility is July (8km).
Hirabari, Japan
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