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
The shift from August to September includes a small decrease in the average high-temperature, from a moderately hot 27.7°C (81.9°F) to a still warm 24.1°C (75.4°F). An average low-temperature of 18.5°C (65.3°F) marks the month of September in Shimizusawa.Humidity
The average relative humidity in September is 79%.Rainfall
In Shimizusawa, during September, the rain falls for 13.6 days and regularly aggregates up to 92mm (3.62") of precipitation. Throughout the year, there are 134.2 rainfall days, and 724mm (28.5") of precipitation is accumulated.Snowfall
In Shimizusawa, snow does not fall in May through November.Daylight
The average length of the day in September is 12h and 27min.On the first day of September in Shimizusawa, sunrise is at 05:05 and sunset at 18:06. On the last day of the month, sunrise is at 05:30 and sunset at 17:20 JST.
Sunshine
The average sunshine in September in Shimizusawa is 7.4h.UV index
In September, the average daily maximum UV index in Shimizusawa is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What are the temperatures in Shimizusawa in September?
What is the average humidity in September in Shimizusawa?
How many days does it rain in September in Shimizusawa?
When it does not snow in Shimizusawa?
How many hours of daylight does Shimizusawa have in September?
What time are sunrise and sunset in September in Shimizusawa?
How many hours of sunshine does Shimizusawa have in September?
How high is the UV index in September in Shimizusawa?
Average temperature in September
Shimizusawa, Japan
- Average high temperature in September: 24.1°C
The warmest month (with the highest average high temperature) is August (27.7°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in September: 18.5°C
The month with the highest average low temperature is August (21.7°C).
The coldest month (with the lowest average low temperature) is February (-1°C).
Average pressure in September
Shimizusawa, Japan
- Average pressure in September: 1014mbar
The month with the highest atmospheric pressure is November (1018.6mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed in September
Shimizusawa, Japan
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is January (15.4km/h).
The calmest month (with the lowest average wind speed) is July (9km/h).
Average humidity in September
Shimizusawa, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is April (70%).
Average rainfall in September
Shimizusawa, Japan
- Average rainfall in September: 92mm
The wettest month (with the highest rainfall) is October (105mm).
The driest month (with the least rainfall) is February (23mm).
Average rainfall days in September
Shimizusawa, Japan
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Shimizusawa, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (62mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Shimizusawa, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Shimizusawa, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is May (Average sunshine: 9h and 30min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in September
Shimizusawa, Japan
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is May (21.3 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in September
Shimizusawa, Japan
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in September
Shimizusawa, Japan
- Average cloud cover in September: 42
The month with the most cloud cover is July (Cloud cover 48).
The months with the least cloud cover are May and November (Cloud cover 36).
Average visibility in September
Shimizusawa, Japan
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, October, November and December (10km).
The months with the lowest visibility are January, May, June, July, August and September (9km).
Shimizusawa, Japan
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