September weather forecastNamegata, Japan

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Namegata, Japan, with an average temperature varying between 21.8°C (71.2°F) and 25.5°C (77.9°F).

Temperature

The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's 28.8°C (83.8°F) to a still moderately hot 25.5°C (77.9°F). September's average low-temperature is an agreeable 21.8°C (71.2°F), reflecting a minor difference from the day's peak temperatures.

Humidity

In September, the average relative humidity in Namegata is 79%.

Rainfall

In Namegata, in September, it is raining for 14.9 days, with typically 43mm (1.69") of accumulated precipitation. In Namegata, during the entire year, the rain falls for 148.8 days and collects up to 368mm (14.49") of precipitation.

Snowfall

In Namegata, snow does not fall in March through December.

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of September, sunrise is at 05:09 and sunset at 18:06. On the last day of the month, sunrise is at 05:32 and sunset at 17:23 JST.

Sunshine

In Namegata, the average sunshine in September is 7.2h.

UV index

In Namegata, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 5 in September leads to these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Frequently asked questions

The average high-temperature, in September, in Namegata, is 25.5°C (77.9°F), while the average low-temperature is 21.8°C (71.2°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is computed to be 35°C (95°F).

The average relative humidity in September is 79%.

In September, the rain falls for 14.9 days. Throughout September, 43mm (1.69") of precipitation is accumulated.

March through December are months without snowfall.

The average day length in September is 12h and 25min.

In September, on the first day of the month, sunrise is at 05:09 and sunset at 18:06. On the last day of the month, sunrise is at 05:32 and sunset at 17:23 JST.

In September, the average sunshine duration is 7.2h.

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Namegata, Japan

  • Average high temperature in September: 25.5°C

The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (8.8°C).

  • Average low temperature in September: 21.8°C

The month with the highest average low temperature is August (24.5°C).
The coldest month (with the lowest average low temperature) is January (4.4°C).

Average pressure in September
Namegata, Japan

  • Average pressure in September: 1013.4mbar

The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).

Average wind speed in September
Namegata, Japan

  • Average wind speed in September: 16.4km/h

The windiest month (with the highest average wind speed) is March (19.8km/h).
The calmest month (with the lowest average wind speed) is June (14.5km/h).

Average humidity in September
Namegata, Japan

  • Average humidity in September: 79%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is January (62%).

Average rainfall in September
Namegata, Japan

  • Average rainfall in September: 43mm

The wettest month (with the highest rainfall) is October (45mm).
The driest month (with the least rainfall) is January (18mm).

Average rainfall days in September
Namegata, Japan

  • Average rainfall days in September: 14.9 days

The month with the highest number of rainy days is October (15.4 days).
The month with the least rainy days is January (9.1 days).

Average snowfall in September
Namegata, Japan

  • Average snowfall in September: 0mm

The month with the highest snowfall is February (10mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in September
Namegata, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

Average daylight in September /
Average sunshine in September
Namegata, Japan

  • Average daylight in September: 12h and 24min

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 48min).

  • Average sunshine in September: 7h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).

Average sunshine days in September
Namegata, Japan

  • Average sunshine days in September: 12.4 days

The month with the most sunshine days is January (18.7 days).
The month with the least sunshine days is September (12.4 days).

Average UV index in September
Namegata, 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, February, March, November and December (UV index 3).

Average cloud cover in September
Namegata, Japan

  • Average cloud cover in September: 44

The month with the most cloud cover is October (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 34).

Average visibility in September
Namegata, Japan

  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).