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
September
Weather in September
Temperature
September's average high-temperature is a warm 28.1°C (82.6°F), maintaining a close comparison with August's 30.6°C (87.1°F). In September, the average low-temperature in Hioki records at a pleasant 21.8°C (71.2°F) during the nights.Heat index
Throughout September, the heat index is appraised at a tropical 33°C (91.4°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.Note that heat index values are valued for light wind and location in the shade. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
In September, the average relative humidity in Hioki, Japan, is 81%.Rainfall
In September, the rain falls for 17.5 days. Throughout September, 116mm (4.57") of precipitation is accumulated. In Hioki, during the entire year, the rain falls for 172.3 days and collects up to 1429mm (56.26") of precipitation.Snowfall
In Hioki, snow does not fall in March through November.Daylight
In September, the average length of the day in Hioki is 12h and 22min.On the first day of the month, sunrise is at 05:54 and sunset at 18:42. On the last day of September, in Hioki, sunrise is at 06:11 and sunset at 18:05 JST.
Sunshine
The average sunshine in September in Hioki, Japan, is 8.4h.UV index
In September, the average daily maximum UV index in Hioki is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 6 in September leads to these guidelines:
Guard against overexposure. Protection from sun-induced harm is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Hioki during September?
What is the average humidity in September in Hioki?
How much does it rain in Hioki in September?
When it does not snow in Hioki?
How many hours of daylight does Hioki have in September?
What time are sunrise and sunset in September in Hioki?
How many hours of sunshine does Hioki have in September?
What is the UV index reading in September in Hioki?
Average temperature in September
Hioki, Japan
- Average high temperature in September: 28.1°C
The warmest month (with the highest average high temperature) is August (30.6°C).
The month with the lowest average high temperature is January (11°C).
- Average low temperature in September: 21.8°C
The month with the highest average low temperature is August (24.4°C).
The coldest month (with the lowest average low temperature) is January (5°C).
Average pressure in September
Hioki, Japan
- Average pressure in September: 1011.2mbar
The month with the highest atmospheric pressure is January (1021.4mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).
Average wind speed in September
Hioki, Japan
- Average wind speed in September: 9.4km/h
The windiest month (with the highest average wind speed) is December (12.4km/h).
The calmest month (with the lowest average wind speed) is June (8.8km/h).
Average humidity in September
Hioki, Japan
- Average humidity in September: 81%
The month with the highest relative humidity is June (87%).
The months with the lowest relative humidity are January and March (75%).
Average rainfall in September
Hioki, Japan
- Average rainfall in September: 116mm
The wettest month (with the highest rainfall) is June (310mm).
The driest month (with the least rainfall) is January (48mm).
Average rainfall days in September
Hioki, Japan
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is July (21.4 days).
The month with the least rainy days is October (10.2 days).
Average snowfall in September
Hioki, Japan
- Average snowfall in September: 0mm
The months with the highest snowfall are February and December (8mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Hioki, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Hioki, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
Hioki, Japan
- Average sunshine days in September: 11 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is June (8 days).
Average UV index in September
Hioki, 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 December (UV index 2).
Average cloud cover in September
Hioki, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is June (Cloud cover 60).
The month with the least cloud cover is October (Cloud cover 35).
Average visibility in September
Hioki, Japan
- Average visibility in September: 9km
The months with the highest visibility are January and December (10km).
The month with the lowest visibility is July (7km).
