October weather forecastIwakuni, Japan

October

Weather in October

October, like September, is another pleasant autumn month in Iwakuni, Japan, with temperature in the range of an average low of 15°C (59°F) and an average high of 20.9°C (69.6°F).

Temperature

In Iwakuni, the beginning of October is marked by a marginally lowered average high-temperature, shifting from September's warm 25.5°C (77.9°F) to an agreeable 20.9°C (69.6°F). During October, the average low-temperature is a moderate 15°C (59°F).

Humidity

In Iwakuni, the average relative humidity in October is 77%.

Rainfall

In Iwakuni, Japan, in October, during 9.7 rainfall days, 39mm (1.54") of precipitation is typically accumulated. In Iwakuni, during the entire year, the rain falls for 161.2 days and collects up to 650mm (25.59") of precipitation.

Snowfall

April through November are months without snowfall in Iwakuni.

Daylight

The average length of the day in October in Iwakuni is 11h and 20min.
On the first day of the month, sunrise is at 06:05 and sunset at 17:55. On the last day of October, in Iwakuni, sunrise is at 06:30 and sunset at 17:19 JST.

Sunshine

In October, the average sunshine in Iwakuni, Japan, is 6.3h.

UV index

The average daily maximum UV index in October in Iwakuni is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index, 4 during October, leads to the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Considering the Sun's intensity during midday, it's wise to minimize 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 October, the average high-temperature and low-temperature in Iwakuni are 20.9°C (69.6°F) and 15°C (59°F) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in August is computed to be 36°C (96.8°F).

The average relative humidity in October in Iwakuni, Japan, is 77%.

In October, the rain falls for 9.7 days. Throughout October, 39mm (1.54") of precipitation is accumulated.

In Iwakuni, snow does not fall in April through November.

In Iwakuni, Japan, the average day length in October is 11h and 20min.

In October, on the first day of the month, sunrise is at 06:05 and sunset at 17:55. On the last day of the month, sunrise is at 06:30 and sunset at 17:19 JST.

In Iwakuni, Japan, the average sunshine duration in October is 6.3h.

In October, the average daily maximum UV index in Iwakuni is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
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 October
Iwakuni, Japan

  • Average high temperature in October: 20.9°C

The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (7.6°C).

  • Average low temperature in October: 15°C

The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).

Average pressure in October
Iwakuni, Japan

  • Average pressure in October: 1017mbar

The month with the highest atmospheric pressure is January (1021.2mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).

Average wind speed in October
Iwakuni, Japan

  • Average wind speed in October: 9.8km/h

The windiest month (with the highest average wind speed) is January (11.8km/h).
The calmest month (with the lowest average wind speed) is June (6.7km/h).

Average humidity in October
Iwakuni, Japan

  • Average humidity in October: 77%

The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is March (73%).

Average rainfall in October
Iwakuni, Japan

  • Average rainfall in October: 39mm

The wettest month (with the highest rainfall) is July (137mm).
The driest month (with the least rainfall) is November (24mm).

Average rainfall days in October
Iwakuni, Japan

  • Average rainfall days in October: 9.7 days

The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is October (9.7 days).

Average snowfall in October
Iwakuni, Japan

  • Average snowfall in October: 0mm

The month with the highest snowfall is January (13mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in October
Iwakuni, Japan

  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in October /
Average sunshine in October
Iwakuni, Japan

  • Average daylight in October: 11h and 18min

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 October: 6h and 18min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

Average sunshine days in October
Iwakuni, Japan

  • Average sunshine days in October: 18.4 days

The month with the most sunshine days is May (19 days).
The month with the least sunshine days is July (8.8 days).

Average UV index in October
Iwakuni, Japan

  • Average UV index in October: 4

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 October
Iwakuni, Japan

  • Average cloud cover in October: 31

The months with the most cloud cover are January and June (Cloud cover 43).
The months with the least cloud cover are August and October (Cloud cover 31).

Average visibility in October
Iwakuni, Japan

  • Average visibility in October: 10km

The months with the highest visibility are January, February, March, September, October, November and December (10km).
The month with the lowest visibility is July (8km).