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 sea temperature 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 signals a slight drop in average high-temperature, sliding from August's warm 27.7°C (81.9°F) to a still moderately hot 24°C (75.2°F). In the month of September, the nighttime temperature dips to a steady average of 18.3°C (64.9°F).Humidity
The average relative humidity in September is 79%.Rainfall
In Shiogama, during September, the rain falls for 12.5 days and regularly aggregates up to 74mm (2.91") of precipitation. Throughout the year, there are 133.1 rainfall days, and 706mm (27.8") of precipitation is accumulated.Snowfall
May through November are months without snowfall in Shiogama, Japan.Sea temperature
In Shiogama, the average seawater temperature in September is 22.3°C (72.1°F).Note: Factoring in a person's dislike for cold, combined with conditions like sunshine, wind, and temperature, a dip in 22.3°C (72.1°F) waters might be satisfying. (It is worth noting that the Olympic swimming waters are maintained between 25°C (77°F) and 28°C (82.4°F).)
Daylight
The average length of the day in September is 12h and 27min.On the first day of September, 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
In Shiogama, Japan, the average sunshine in September is 7.6h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Warning! Sand and water reflections boost the intensity of UV exposure.
Frequently asked questions
What are September temperatures in Shiogama?
What is the average humidity in September in Shiogama?
How many days does it rain in September in Shiogama?
When it does not snow in Shiogama?
What is the water temperature in September in Shiogama?
What is the average length of the day in September in Shiogama?
When are sunrise and sunset in September in Shiogama?
How many hours of sunshine does Shiogama have in September?
What is the UV index reading in September in Shiogama?
Average temperature in September
Shiogama, Japan
- Average high temperature in September: 24°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: 18.3°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
Shiogama, 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
Shiogama, Japan
- Average wind speed in September: 10.6km/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
Shiogama, 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
Shiogama, Japan
- Average rainfall in September: 74mm
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
Shiogama, Japan
- Average rainfall days in September: 12.5 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
Shiogama, 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
Shiogama, 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 sea temperature in September
Shiogama, Japan
- Average sea temperature in September: 22.3°C
The best month for swimming (with the highest average sea temperature) is August (23.6°C).
The coldest month (with the lowest average sea temperature) is March (6.9°C).
Average daylight in September /
Average sunshine in September
Shiogama, 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 4min
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
Shiogama, Japan
- Average sunshine days in September: 15.8 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
Shiogama, 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
Shiogama, Japan
- Average cloud cover in September: 39
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
Shiogama, 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).
Shiogama, Japan
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