Sumoto
Japan
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Sumoto, Japan

The first month of the autumn, September, is still a warm month in Sumoto, Japan, with average temperature varying between 20.1°C (68.2°F) and 26.5°C (79.7°F).

Temperature

In September, the average high-temperature marginally drops, from a hot 30.6°C (87.1°F) in August, to a moderately hot 26.5°C (79.7°F). The average low-temperature, in Sumoto, is 20.1°C (68.2°F).

Humidity

In Sumoto, Japan, the average relative humidity is 79%.

Rainfall

The month with the most rainfall in Sumoto, Japan, is September when 238.7mm (9.4") of precipitation is typically aggregated.

Snowfall

April through December are months without snowfall in Sumoto.

Sea temperature

In Sumoto, the average seawater temperature in September is 26.8°C (80.2°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

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

Sunshine

In September, the average sunshine in Sumoto is 5.2h.

What is the temperature in September in Sumoto?

In Sumoto, Japan, in September, the average high-temperature is 26.5°C (79.7°F), and the average low-temperature is 20.1°C (68.2°F).

What is the average humidity in September in Sumoto?

The average relative humidity in September in Sumoto, Japan, is 79%.

How much does it rain in Sumoto in September?

Throughout September, 238.7mm (9.4") of precipitation is accumulated.

What is the wettest month in Sumoto?

The month with the most rainfall in Sumoto is September when 238.7mm (9.4") of precipitation is typically aggregated.

When it does not snow in Sumoto?

April through December are months without snowfall in Sumoto, Japan.

What is the water temperature in September in Sumoto?

In Sumoto, Japan, the average seawater temperature in September is 26.8°C (80.2°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 Sumoto?

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

How long on average sun shines in September in Sumoto?

In September, the average sunshine in Sumoto, Japan, is 5.2h.
Average temperature in September - Sumoto, Japan
  • Average high temperature in September: 26.5°C

The warmest month (with the highest average high temperature) is August (30.6°C).
The month with the lowest average high temperature is January (8°C).

  • Average low temperature in September: 20.1°C

The month with the highest average low temperature is August (23.5°C).
The coldest month (with the lowest average low temperature) is February (1.6°C).

Average humidity in September - Sumoto, Japan
  • Average humidity in September: 79%

The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is January (66%).

Average rainfall in September - Sumoto, Japan
  • Average rainfall in September: 238.7mm

The wettest month (with the highest rainfall) is September (238.7mm).
The driest month (with the lowest rainfall) is December (41.4mm).

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

The month with the highest snowfall is February (30mm).
Months with the lowest snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average sea temperature in September - Sumoto, Japan
  • Average sea temperature in September: 26.8°C

The best month for swimming (with the highest average sea temperature) is August (27.8°C).
The coldest month (with the lowest average sea temperature) is February (15.7°C).

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

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 5.2h

The month with most sunshine is August (Average sunshine: 7.1h).
The month with least sunshine is December (Average sunshine: 4.5h).