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 slight reduction in average high-temperature, easing from a tropical 31.9°C (89.4°F) in August to a moderately hot 27.4°C (81.3°F). Nighttime temperature experiences an average drop to a pleasant 20.9°C (69.6°F) in September.Heat index
September's heat index is calculated to be a tropical 30°C (86°F). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
The average relative humidity in September in Nakatomi is 72%.Rainfall
In Nakatomi, during September, the rain falls for 15.5 days and regularly aggregates up to 100mm (3.94") of precipitation. Throughout the year, there are 161.9 rainfall days, and 857mm (33.74") of precipitation is accumulated.Snowfall
April through October and December are months without snowfall in Nakatomi.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 05:14 and sunset at 18:09. On the last day of September, sunrise is at 05:36 and sunset at 17:27 JST.
Sunshine
The average sunshine in September in Nakatomi is 7.9h.UV index
In September, the average daily maximum UV index in Nakatomi is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 suggests this advice:
Put precautions into practice - Guidance to elude sunburn is provided. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What are September temperatures in Nakatomi?
What is the average humidity in September in Nakatomi?
How many days does it rain in September in Nakatomi?
When it does not snow in Nakatomi?
What is the average length of the day in September in Nakatomi?
When are sunrise and sunset in September in Nakatomi?
How long on average sun shines in September in Nakatomi?
What is the UV index reading in September in Nakatomi?
Average temperature in September
Nakatomi, Japan
- Average high temperature in September: 27.4°C
The warmest month (with the highest average high temperature) is August (31.9°C).
The month with the lowest average high temperature is January (8.5°C).
- Average low temperature in September: 20.9°C
The month with the highest average low temperature is August (25°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure in September
Nakatomi, Japan
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Nakatomi, Japan
- Average wind speed in September: 10.4km/h
The windiest month (with the highest average wind speed) is April (12.9km/h).
The calmest month (with the lowest average wind speed) is November (10.1km/h).
Average humidity in September
Nakatomi, Japan
- Average humidity in September: 72%
The months with the highest relative humidity are June and July (74%).
The month with the lowest relative humidity is January (58%).
Average rainfall in September
Nakatomi, Japan
- Average rainfall in September: 100mm
The wettest month (with the highest rainfall) is October (121mm).
The driest months (with the least rainfall) are February and December (34mm).
Average rainfall days in September
Nakatomi, Japan
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Nakatomi, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (39mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days in September
Nakatomi, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight in September /
Average sunshine in September
Nakatomi, 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: 7h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days in September
Nakatomi, Japan
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in September
Nakatomi, 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 February (UV index 2).
Average cloud cover in September
Nakatomi, Japan
- Average cloud cover in September: 41
The months with the most cloud cover are June and October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in September
Nakatomi, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, May, August, October, November and December (10km).
The months with the lowest visibility are April, June, July and September (9km).
Nakatomi, Japan
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