September weather forecastOrio, Japan

September

Weather in September

September, the first month of the autumn in Orio, is still a warm month, with an average temperature fluctuating between 25.9°C (78.6°F) and 21.3°C (70.3°F).

Temperature

In Orio, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's 29.7°C (85.5°F) to a still moderately hot 25.9°C (78.6°F). Orio's nighttime temperatures in September reveal a minimal variation from the daytime highs, averaging at a pleasant 21.3°C (70.3°F).

Humidity

In September, the average relative humidity in Orio is 78%.

Rainfall

In September, the rain falls for 15.7 days. Throughout September, 87mm (3.43") of precipitation is accumulated. In Orio, during the entire year, the rain falls for 188 days and collects up to 1127mm (44.37") of precipitation.

Snowfall

March through November are months without snowfall in Orio.

Daylight

The average length of the day in September in Orio is 12h and 23min.
On the first day of the month, sunrise is at 05:50 and sunset at 18:43. On the last day of September, sunrise is at 06:10 and sunset at 18:03 JST.

Sunshine

The average sunshine in September in Orio is 8.5h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

In September, in Orio, the average high-temperature is 25.9°C (78.6°F), and the average low-temperature is 21.3°C (70.3°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 36°C (96.8°F).

The average relative humidity in September in Orio is 78%.

In Orio, Japan, in September, during 15.7 rainfall days, 87mm (3.43") of precipitation is typically accumulated.

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

The average day length in September in Orio, Japan, is 12h and 23min.

In September, on the first day of the month, sunrise is at 05:50 and sunset at 18:43. On the last day of the month, sunrise is at 06:10 and sunset at 18:03 JST.

The average sunshine duration in September is 8.5h.

The average daily maximum UV index in September in Orio is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to 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
Orio, Japan

  • Average high temperature in September: 25.9°C

The warmest month (with the highest average high temperature) is August (29.7°C).
The month with the lowest average high temperature is January (8.6°C).

  • Average low temperature in September: 21.3°C

The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (5°C).

Average pressure in September
Orio, Japan

  • Average pressure in September: 1012.4mbar

The month with the highest atmospheric pressure is January (1021.9mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).

Average wind speed in September
Orio, Japan

  • Average wind speed in September: 13km/h

The windiest month (with the highest average wind speed) is December (17.2km/h).
The calmest month (with the lowest average wind speed) is June (10.7km/h).

Average humidity in September
Orio, Japan

  • Average humidity in September: 78%

The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January and March (69%).

Average rainfall in September
Orio, Japan

  • Average rainfall in September: 87mm

The wettest month (with the highest rainfall) is July (215mm).
The driest month (with the least rainfall) is November (56mm).

Average rainfall days in September
Orio, Japan

  • Average rainfall days in September: 15.7 days

The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is May (11.4 days).

Average snowfall in September
Orio, Japan

  • Average snowfall in September: 0mm

The month with the highest snowfall is January (17mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).

Average snowfall days in September
Orio, Japan

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (4.3 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
Orio, Japan

  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 8h and 30min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in September
Orio, Japan

  • Average sunshine days in September: 12.4 days

The month with the most sunshine days is May (17.8 days).
The month with the least sunshine days is July (7.5 days).

Average UV index in September
Orio, 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 and December (UV index 2).

Average cloud cover in September
Orio, Japan

  • Average cloud cover in September: 37

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in September
Orio, Japan

  • Average visibility in September: 10km

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