September weather forecast
Nagoya, Japan

Weather in September

September, the first month of the autumn, in Nagoya, is also a moderately hot month, with average temperature fluctuating between 20.7°C (69.3°F) and 28.6°C (83.5°F).

Temperature

In September, the average high-temperature marginally drops, from a tropical 32.8°C (91°F) in August, to a warm 28.6°C (83.5°F). The average low-temperature, in Nagoya, is 20.7°C (69.3°F).

Heat index

In September, the average heat index is calculated to be a hot 32°C (89.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, differences in body mass, height, and shape, pregnancy), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in Nagoya is 71%.

Rainfall

The month with the most rainfall in Nagoya is September when the rain falls for 11.9 days and typically aggregates up to 234.4mm (9.23") of precipitation.

Snowfall

In Nagoya snow does not fall in March through November.

Sea temperature

In September, the average sea temperature is 27°C (80.6°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Nagoya, the average length of the day in September is 12.4h.

Sunshine

June and September, with an average of 5h of sunshine, are months with the least sunshine in Nagoya.

UV index

The average daily maximum UV index in September is 8. A UV Index value of 8 to 10 symbolizes a very high health risk from unsafe exposure to the UV radiation for average individuals.
Note: In September, the average maximum UV index of 8 translate into the following recommendations:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the temperature in September in Nagoya?

In September, the average high-temperature is 28.6°C (83.5°F), and the average low-temperature is 20.7°C (69.3°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in September is calculated to be 32°C (89.6°F).

What is the average humidity in September in Nagoya?

The average relative humidity in September is 71%.

What is the rainiest month in Nagoya?

The month with the most rainfall in Nagoya, Japan, is September when the rain falls for 11.9 days and typically aggregates up to 234.4mm (9.23") of precipitation.

How much does it rain in Nagoya in September?

In Nagoya, Japan, during September, the rain falls for 11.9 days and regularly aggregates up to 234.4mm (9.23") of precipitation.

When it does not snow in Nagoya?

March through November are months without snowfall in Nagoya, Japan.

How warm is the water in September in Nagoya?

In September, the average sea temperature is 27°C (80.6°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in September in Nagoya?

The average length of the day in September in Nagoya is 12.4h.

What is the month with the least sunshine in Nagoya?

Months with the least sunshine are June and September, with an average of 5h of sunshine.

How many hours of sunshine does Nagoya have in September?

In September, the average sunshine in Nagoya is 5h.

How high is the UV index in September in Nagoya?

In Nagoya, the average daily maximum UV index in September is 8. A UV Index value of 8 to 10 symbolizes a very high hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
Nagoya, Japan

Average temperature in September - Nagoya, Japan
  • Average high temperature in September: 28.6°C

The warmest month (with the highest average high temperature) is August (32.8°C).
The month with the lowest average high temperature is January (9°C).

  • Average low temperature in September: 20.7°C

The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).

[Resources]

Average humidity in September
Nagoya, Japan

Average humidity in September - Nagoya, Japan
  • Average humidity in September: 71%

The month with the highest relative humidity is July (74%).
The month with the lowest relative humidity is March (59%).

[Resources]

Average rainfall in September
Nagoya, Japan

Average rainfall in September - Nagoya, Japan
  • Average rainfall in September: 234.4mm

The wettest month (with the highest rainfall) is September (234.4mm).
The driest month (with the least rainfall) is December (45mm).

[Resources]

Average rainfall days in September
Nagoya, Japan

Average rainfall days in September - Nagoya, Japan
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is July (13 days).
The month with the least rainy days is January (6.8 days).

[Resources]

Average snowfall in September
Nagoya, Japan

Average snowfall in September - Nagoya, Japan
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (80mm).
Months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).

[Resources]

Average snowfall days in September
Nagoya, Japan

Average snowfall days in September - Nagoya, Japan
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.4 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

[Resources]

Average sea temperature in September
Nagoya, Japan

Average sea temperature in September - Nagoya, Japan
  • Average sea temperature in September: 27°C

The best month for swimming (with the highest average sea temperature) is August (28°C).
The coldest month (with the lowest average sea temperature) is February (16°C).

[Resources]

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

Average daylight in September / Average sunshine in September - Nagoya, Japan
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in September: 5h

The month with the most sunshine is April (Average sunshine: 6.6h).
Months with the least sunshine are June and September (Average sunshine: 5).

[Resources]

Average UV index in September
Nagoya, Japan

Average UV index in September - Nagoya, Japan
  • Average UV index in September: 8

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 2).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location