September weather forecastOfuna, Japan

September

Weather in September

September, the first month of the autumn in Ofuna, is also a moderately hot month, with temperature in the range of an average low of 21.7°C (71.1°F) and an average high of 26.2°C (79.2°F).

Temperature

Ofuna, Japan, records a mild change in average high-temperature during September, easing from a warm 29.8°C (85.6°F) in August to a still moderately hot 26.2°C (79.2°F). Ofuna in September observes a slight diminution in temperature from daily highs, recording a low-temperature average of 21.7°C (71.1°F).

Humidity

In September, the average relative humidity is 75%.

Rainfall

In Ofuna, during September, the rain falls for 11.1 days and regularly aggregates up to 36mm (1.42") of precipitation. Throughout the year, in Ofuna, there are 129.4 rainfall days, and 351mm (13.82") of precipitation is accumulated.

Snowfall

April through December are months without snowfall.

Daylight

In Ofuna, Japan, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 05:14 and sunset at 18:09. On the last day of September, in Ofuna, Japan, sunrise is at 05:36 and sunset at 17:27 JST.

Sunshine

The average sunshine in September in Ofuna is 8.2h.

UV index

The average daily maximum UV index in September in Ofuna is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.

Frequently asked questions

In Ofuna, in September, the average high-temperature is 26.2°C (79.2°F), and the average low-temperature is 21.7°C (71.1°F). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is appraised at 36°C (96.8°F).

In Ofuna, the average relative humidity in September is 75%.

In Ofuna, Japan, in September, during 11.1 rainfall days, 36mm (1.42") of precipitation is typically accumulated.

In Ofuna, snow does not fall in April through December.

In September, the average day length in Ofuna is 12h and 25min.

On the first day of September in Ofuna, sunrise is at 05:14 and sunset at 18:09. On the last day of the month, sunrise is at 05:36 and sunset at 17:27 JST.

In Ofuna, the average sunshine duration in September is 8.2h.

The average daily maximum UV index in September in Ofuna is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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 days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Ofuna, Japan

  • Average high temperature in September: 26.2°C

The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (9.3°C).

  • Average low temperature in September: 21.7°C

The month with the highest average low temperature is August (25.2°C).
The coldest month (with the lowest average low temperature) is January (3.9°C).

Average pressure in September
Ofuna, Japan

  • Average pressure in September: 1013.3mbar

The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in September
Ofuna, Japan

  • Average wind speed in September: 14.7km/h

The windiest month (with the highest average wind speed) is March (17.4km/h).
The calmest month (with the lowest average wind speed) is June (13.9km/h).

Average humidity in September
Ofuna, Japan

  • Average humidity in September: 75%

The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (60%).

Average rainfall in September
Ofuna, Japan

  • Average rainfall in September: 36mm

The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is February (12mm).

Average rainfall days in September
Ofuna, Japan

  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is December (6.1 days).

Average snowfall in September
Ofuna, Japan

  • Average snowfall in September: 0mm

The month with the highest snowfall is February (3mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in September
Ofuna, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in September: 8h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

Average sunshine days in September
Ofuna, Japan

  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in September
Ofuna, Japan

  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in September
Ofuna, Japan

  • Average cloud cover in September: 38

The months with the most cloud cover are March and October (Cloud cover 43).
The months with the least cloud cover are January and December (Cloud cover 29).

Average visibility in September
Ofuna, Japan

  • Average visibility in September: 10km

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