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
September
Weather in September
Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's 27.9°C (82.2°F) to a still warm 23°C (73.4°F). An average temperature of 16.7°C (62.1°F) is recorded in Namerikawa during the nights in September.Humidity
In September, the average relative humidity in Namerikawa is 80%.Rainfall
In Namerikawa, in September, it is raining for 16.4 days, with typically 97mm (3.82") of accumulated precipitation. In Namerikawa, Japan, during the entire year, the rain falls for 218.8 days and collects up to 1305mm (51.38") of precipitation.Snowfall
May through November are months without snowfall in Namerikawa.Sea temperature
In Namerikawa, the average seawater temperature in September is 25.5°C (77.9°F).Note: Between the temperatures of 25°C (77°F) and 29°C (84.2°F), water is considered very warm, providing pleasure in water activities without discomfort over lengthy periods.
Daylight
In September, the average length of the day in Namerikawa is 12h and 26min.On the first day of the month, sunrise is at 05:21 and sunset at 18:19. On the last day of September, sunrise is at 05:45 and sunset at 17:35 JST.
Sunshine
In Namerikawa, Japan, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Namerikawa, Japan, is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 5 during September translates into the following guidance:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Caution! Sand and water surfaces escalate the UV intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Namerikawa?
What is the average humidity in September in Namerikawa?
How much does it rain in Namerikawa in September?
When it does not snow in Namerikawa?
What is the sea water temperature in September in Namerikawa?
What is the average length of the day in September in Namerikawa?
What time are sunrise and sunset in September in Namerikawa?
How many hours of sunshine does Namerikawa have in September?
How high is the UV index in September in Namerikawa?
Average temperature in September
Namerikawa, Japan
- Average high temperature in September: 23°C
The warmest month (with the highest average high temperature) is August (27.9°C).
The month with the lowest average high temperature is January (2.6°C).
- Average low temperature in September: 16.7°C
The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is February (-2.8°C).
Average pressure in September
Namerikawa, Japan
- Average pressure in September: 1013.7mbar
The months with the highest atmospheric pressure are February and November (1019.4mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Namerikawa, Japan
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is December (12km/h).
The calmest months (with the lowest average wind speed) are June and August (7.4km/h).
Average humidity in September
Namerikawa, Japan
- Average humidity in September: 80%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Namerikawa, Japan
- Average rainfall in September: 97mm
The wettest month (with the highest rainfall) is July (179mm).
The driest month (with the least rainfall) is May (64mm).
Average rainfall days in September
Namerikawa, Japan
- Average rainfall days in September: 16.4 days
The month with the highest number of rainy days is July (24.8 days).
The month with the least rainy days is May (14.4 days).
Average snowfall in September
Namerikawa, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (469mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Namerikawa, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Namerikawa, Japan
- Average sea temperature in September: 25.5°C
The best month for swimming (with the highest average sea temperature) is August (27°C).
The coldest month (with the lowest average sea temperature) is March (10.8°C).
Average daylight in September /
Average sunshine in September
Namerikawa, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Namerikawa, Japan
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is May (13.6 days).
The month with the least sunshine days is January (3.5 days).
Average UV index in September
Namerikawa, Japan
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Namerikawa, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 33).
Average visibility in September
Namerikawa, Japan
- Average visibility in September: 9km
The month with the highest visibility is October (10km).
The month with the lowest visibility is January (8km).
