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
September
Weather in September
Temperature
September brings a minor shift in the average high-temperature, adjusting from a tropical 31.5°C (88.7°F) in August to a moderately hot 27.1°C (80.8°F). An average low-temperature of 19.6°C (67.3°F) is anticipated throughout the nights during September.Heat index
September's mean heat index is estimated at a hot 30°C (86°F). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.Heat index evaluations are typically in the context of light winds and shaded environments. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is the outcome of merging air's temperature and its humidity metrics. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In Tondabayashi, the average relative humidity in September is 76%.Rainfall
In Tondabayashi, in September, it is raining for 15.1 days, with typically 78mm (3.07") of accumulated precipitation. In Tondabayashi, during the entire year, the rain falls for 177.4 days and collects up to 831mm (32.72") of precipitation.Snowfall
April through November are months without snowfall in Tondabayashi, Japan.Daylight
The average length of the day in September in Tondabayashi, Japan, is 12h and 24min.On the first day of the month, sunrise is at 05:30 and sunset at 18:24. On the last day of September, sunrise is at 05:51 and sunset at 17:43 JST.
Sunshine
The average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Tondabayashi?
What is the average humidity in September in Tondabayashi?
How many days does it rain in September in Tondabayashi?
When it does not snow in Tondabayashi?
How many hours of daylight does Tondabayashi have in September?
When are sunrise and sunset in September in Tondabayashi?
How long on average sun shines in September in Tondabayashi?
What is the UV index reading in September in Tondabayashi?
Average temperature in September
Tondabayashi, Japan
- Average high temperature in September: 27.1°C
The warmest month (with the highest average high temperature) is August (31.5°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in September: 19.6°C
The month with the highest average low temperature is August (23.9°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).
Average pressure in September
Tondabayashi, Japan
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is February (1019.6mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).
Average wind speed in September
Tondabayashi, Japan
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is January (10.1km/h).
The calmest month (with the lowest average wind speed) is June (7.1km/h).
Average humidity in September
Tondabayashi, Japan
- Average humidity in September: 76%
The month with the highest relative humidity is July (78%).
The months with the lowest relative humidity are April and May (70%).
Average rainfall in September
Tondabayashi, Japan
- Average rainfall in September: 78mm
The wettest month (with the highest rainfall) is July (146mm).
The driest month (with the least rainfall) is November (37mm).
Average rainfall days in September
Tondabayashi, Japan
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is May (11.8 days).
Average snowfall in September
Tondabayashi, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (50mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Tondabayashi, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.3 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
Tondabayashi, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).
Average sunshine days in September
Tondabayashi, Japan
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is May (18 days).
The month with the least sunshine days is July (6.9 days).
Average UV index in September
Tondabayashi, Japan
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Tondabayashi, Japan
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Tondabayashi, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
