September weather forecastYaka, Japan
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Yaka, Japan, with an average temperature fluctuating between 28.7°C (83.7°F) and 27.2°C (81°F).Temperature
At the start of September, Yaka's average high-temperature reaches a still warm 28.7°C (83.7°F), subtly different from the preceding month. A minimal decline in temperature from daytime highs is anticipated throughout the September nights, averaging a still moderately hot 27.2°C (81°F).Heat index
The average heat index in September is appraised at a hot 34°C (93.2°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for 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 is 79%.Rainfall
In Yaka, in September, during 20.3 rainfall days, 144mm (5.67") of precipitation is typically accumulated. In Yaka, during the entire year, the rain falls for 229 days and collects up to 1437mm (56.57") of precipitation.Daylight
In September, the average length of the day in Yaka is 12h and 19min.On the first day of September in Yaka, sunrise is at 06:08 and sunset at 18:48. On the last day of the month, sunrise is at 06:20 and sunset at 18:16 JST.
Sunshine
The average sunshine in September in Yaka, Japan, is 8.3h.UV index
The months with the highest UV index in Yaka are June 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 exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 7 in September transforms into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yaka, Japan
- Average high temperature in September: 28.7°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 (18.8°C).
- Average low temperature in September: 27.2°C
The month with the highest average low temperature is August (28.2°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure in September
Yaka, Japan
- Average pressure in September: 1009.1mbar
The month with the highest atmospheric pressure is January (1020.9mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).
Average wind speed in September
Yaka, Japan
- Average wind speed in September: 22km/h
The windiest month (with the highest average wind speed) is December (27km/h).
The calmest month (with the lowest average wind speed) is May (19.2km/h).
Average humidity in September
Yaka, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is June (87%).
The month with the lowest relative humidity is January (72%).
Average rainfall in September
Yaka, Japan
- Average rainfall in September: 144mm
The wettest month (with the highest rainfall) is June (205mm).
The driest month (with the least rainfall) is February (61mm).
Average rainfall days in September
Yaka, Japan
- Average rainfall days in September: 20.3 days
The month with the highest number of rainy days is January (22.6 days).
The months with the least rainy days are March and November (16.5 days).
Average daylight in September /
Average sunshine in September
Yaka, Japan
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Yaka, Japan
- Average sunshine days in September: 7.4 days
The month with the most sunshine days is April (11 days).
The month with the least sunshine days is January (5.4 days).
Average UV index in September
Yaka, Japan
- Average UV index in September: 7
The months with the highest UV index are June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in September
Yaka, Japan
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Yaka, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is May (9km).
