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
Weather in September
Temperature
September's weather records an average high-temperature of a still moderately hot 28.2°C (82.8°F), showing little deviation from August. A mean low-temperature of 27°C (80.6°F) is a distinguishing feature of September in Uken, indicating a slight dip from daytime highs.Heat index
The heat index value for September is appraised at a tropical 32°C (89.6°F). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.Heat index's context suggests values are appropriate for shady areas and slight breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
In September, the average relative humidity is 77%.Rainfall
In Uken, in September, during 18.6 rainfall days, 117mm (4.61") of precipitation is typically accumulated. In Uken, during the entire year, the rain falls for 203.4 days and collects up to 1264mm (49.76") of precipitation.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 06:01 and sunset at 18:44. On the last day of September, sunrise is at 06:15 and sunset at 18:10 JST.
Sunshine
In September, the average sunshine in Uken, Japan, is 8.1h.UV index
The months with the highest UV index are July through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 7 in September translates into these instructions:
Shun overexposure. Protection from sun ravages is indispensable. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Frequently asked questions
How hot is September in Uken?
What is the average humidity in September in Uken?
How many days does it rain in September in Uken?
How many hours of daylight does Uken have in September?
When is the sunrise / sunset in September in Uken?
How long on average sun shines in September in Uken?
What are the months with the highest UV index in Uken?
What is the UV index intensity in September in Uken?
Average temperature in September
Uken, Japan
- Average high temperature in September: 28.2°C
The warmest month (with the highest average high temperature) is August (29°C).
The month with the lowest average high temperature is January (16.9°C).
- Average low temperature in September: 27°C
The month with the highest average low temperature is August (27.8°C).
The coldest month (with the lowest average low temperature) is January (14.8°C).
Average pressure in September
Uken, Japan
- Average pressure in September: 1009.7mbar
The month with the highest atmospheric pressure is January (1021mbar).
The month with the lowest atmospheric pressure is August (1007.3mbar).
Average wind speed in September
Uken, Japan
- Average wind speed in September: 22.2km/h
The windiest months (with the highest average wind speed) are January and December (26.8km/h).
The calmest month (with the lowest average wind speed) is May (19.8km/h).
Average humidity in September
Uken, Japan
- Average humidity in September: 77%
The month with the highest relative humidity is June (86%).
The months with the lowest relative humidity are January and December (71%).
Average rainfall in September
Uken, Japan
- Average rainfall in September: 117mm
The wettest month (with the highest rainfall) is June (249mm).
The driest month (with the least rainfall) is January (59mm).
Average rainfall days in September
Uken, Japan
- Average rainfall days in September: 18.6 days
The month with the highest number of rainy days is June (21.8 days).
The month with the least rainy days is April (15 days).
Average daylight in September /
Average sunshine in September
Uken, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Uken, Japan
- Average sunshine days in September: 9.2 days
The month with the most sunshine days is May (14.2 days).
The month with the least sunshine days is June (7 days).
Average UV index in September
Uken, Japan
- Average UV index in September: 7
The months with the highest UV index are July, August and September (UV index 7).
The months with the lowest UV index are January, February and December (UV index 4).
Average cloud cover in September
Uken, Japan
- Average cloud cover in September: 40
The months with the most cloud cover are January and February (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Uken, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Uken, Japan
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