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 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
With September's arrival, Niinazume, Japan, notes an average high-temperature of a still warm 27°C (80.6°F), closely following the trend of the preceding month. Niinazume records a negligible downturn from daytime temperatures, averaging a low of 23.4°C (74.1°F) in the month of September.Heat index
In September, the average heat index is evaluated at a tropical 30°C (86°F). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Humidity
In Niinazume, the average relative humidity in September is 78%.Rainfall
In Niinazume, in September, it is raining for 17.9 days, with typically 124mm (4.88") of accumulated precipitation. Throughout the year, in Niinazume, there are 155.3 rainfall days, and 1120mm (44.09") of precipitation is accumulated.Snowfall
In Niinazume, snow does not fall in January, March through November.Daylight
In Niinazume, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 05:49 and sunset at 18:38. On the last day of the month, sunrise is at 06:07 and sunset at 18:00 JST.
Sunshine
The average sunshine in September in Niinazume is 8.7h.UV index
The average daily maximum UV index in September in Niinazume is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 6 during September leads to these instructions:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
What is the usual temperature for Niinazume in September?
What is the average humidity in September in Niinazume?
How many days does it rain in September in Niinazume?
When it does not snow in Niinazume?
What is the average length of the day in September in Niinazume?
When is the sunrise / sunset in September in Niinazume?
How long on average sun shines in September in Niinazume?
What is the UV index intensity in September in Niinazume?
Average temperature in September
Niinazume, Japan
- Average high temperature in September: 27°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 (11.9°C).
- Average low temperature in September: 23.4°C
The month with the highest average low temperature is August (25.7°C).
The coldest month (with the lowest average low temperature) is January (6.5°C).
Average pressure in September
Niinazume, Japan
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is January (1021.1mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).
Average wind speed in September
Niinazume, Japan
- Average wind speed in September: 13.7km/h
The windiest month (with the highest average wind speed) is October (15.4km/h).
The calmest month (with the lowest average wind speed) is June (12.1km/h).
Average humidity in September
Niinazume, Japan
- Average humidity in September: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is January (68%).
Average rainfall in September
Niinazume, Japan
- Average rainfall in September: 124mm
The wettest month (with the highest rainfall) is June (194mm).
The driest month (with the least rainfall) is January (34mm).
Average rainfall days in September
Niinazume, Japan
- Average rainfall days in September: 17.9 days
The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is January (7.5 days).
Average snowfall days in September
Niinazume, Japan
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and December (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Niinazume, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is October (Average sunshine: 5h and 48min).
Average sunshine days in September
Niinazume, Japan
- Average sunshine days in September: 9.2 days
The month with the most sunshine days is January (22.7 days).
The month with the least sunshine days is September (9.2 days).
Average UV index in September
Niinazume, 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 3).
Average cloud cover in September
Niinazume, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is June (Cloud cover 53).
The month with the least cloud cover is January (Cloud cover 27).
Average visibility in September
Niinazume, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, August, September, October, November and December (10km).
The months with the lowest visibility are June and July (9km).
Niinazume, Japan
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