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
As September commences, the average high-temperature subtly reduces, transitioning from a hot 31.9°C (89.4°F) in August to a warm 27.5°C (81.5°F). In Wako, the average nighttime temperature during September is an agreeable 20.9°C (69.6°F).Heat index
In September, the heat index is appraised at a tropical 30°C (86°F). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an estimation of the warmth sensation when considering humidity levels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. 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 especially vital to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
In September, the average relative humidity in Wako is 73%.Rainfall
In Wako, Japan, in September, it is raining for 14 days, with typically 74mm (2.91") of accumulated precipitation. In Wako, during the entire year, the rain falls for 138 days and collects up to 580mm (22.83") of precipitation.Snowfall
April through October and December are months without snowfall.Daylight
In September, the average length of the day in Wako is 12h and 25min.On the first day of the month, sunrise is at 05:13 and sunset at 18:09. On the last day of September, in Wako, sunrise is at 05:35 and sunset at 17:27 JST.
Sunshine
The average sunshine in September in Wako is 7.8h.UV index
In Wako, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 6 during September translates into the following guidance:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What are September temperatures in Wako?
What is the average humidity in September in Wako?
How many days does it rain in September in Wako?
When it does not snow in Wako?
What is the average length of the day in September in Wako?
When are sunrise and sunset in September in Wako?
How long on average sun shines in September in Wako?
What is the UV index intensity in September in Wako?
Average temperature in September
Wako, Japan
- Average high temperature in September: 27.5°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 (24.9°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure in September
Wako, 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
Wako, Japan
- Average wind speed in September: 10km/h
The windiest month (with the highest average wind speed) is April (12.6km/h).
The calmest month (with the lowest average wind speed) is November (9.7km/h).
Average humidity in September
Wako, Japan
- Average humidity in September: 73%
The month with the highest relative humidity is July (75%).
The month with the lowest relative humidity is January (59%).
Average rainfall in September
Wako, Japan
- Average rainfall in September: 74mm
The wettest month (with the highest rainfall) is October (79mm).
The driest month (with the least rainfall) is December (19mm).
Average rainfall days in September
Wako, Japan
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in September
Wako, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (33mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days in September
Wako, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 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
Wako, 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
Wako, Japan
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is January (26 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in September
Wako, Japan
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Wako, 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
Wako, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, August, October, November and December (10km).
The months with the lowest visibility are June, July and September (9km).
Wako, Japan
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