December weather forecast
Oi, Japan

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Weather in December

The first month of the winter, December, is still a cool month in Oi, Japan, with an average temperature fluctuating between 10.5°C (50.9°F) and 4.3°C (39.7°F).

Temperature

Oi's progression into December includes a drop in the average high-temperature, from a refreshing 15.8°C (60.4°F) in November to a cool 10.5°C (50.9°F). Oi witnesses an average low-temperature of 4.3°C (39.7°F) throughout the month of December.

Humidity

In Oi, the average relative humidity in December is 61%.

Rainfall

The month with the least rainfall in Oi, Japan, is December, when the rain falls for 5.8 days and typically collects 21mm (0.83") of precipitation.

Snowfall

April through October and December are months without snowfall.

Daylight

December has the shortest days of the year in Oi, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 06:32 and sunset at 16:28. On the last day of December, in Oi, Japan, sunrise is at 06:50 and sunset at 16:37 JST.

Sunshine

In December, the average sunshine is 6.5h.

UV index

In Oi, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 3 in December translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.

Frequently asked questions

What are the temperatures in Oi in December?

In December, in Oi, the average high-temperature is 10.5°C (50.9°F), and the average low-temperature is 4.3°C (39.7°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 30°C (86°F).

What is the average humidity in December in Oi?

In December, the average relative humidity in Oi, Japan, is 61%.

What is the driest month in Oi?

December is the month with the least rainfall in Oi, Japan. Rain falls for 5.8 days and accumulates 21mm (0.83") of precipitation.

How much does it rain in Oi in December?

In Oi, Japan, in December, during 5.8 rainfall days, 21mm (0.83") of precipitation is typically accumulated.

When it does not snow in Oi?

April through October and December are months without snowfall in Oi, Japan.

Does it snow in Oi in December?

In December, in Oi, it doesn't snow. November is the latest month when it typically snows.

What is the month with the shortest days in Oi?

With an average of 9h and 48min of daylight, December has the shortest days of the year in Oi, Japan.

How many hours of daylight does Oi have in December?

In Oi, Japan, the average day length in December is 9h and 48min.

When are sunrise and sunset in December in Oi?

On the first day of December, sunrise is at 06:32 and sunset at 16:28. On the last day of the month, sunrise is at 06:50 and sunset at 16:37 JST.

How long on average sun shines in December in Oi?

The average sunshine duration in December in Oi, Japan, is 6.5h.

What is the UV index reading in December in Oi?

In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Oi, Japan

Average temperature in December - Oi, Japan
  • Average high temperature in December: 10.5°C

The warmest month (with the highest average high temperature) is August (32°C).
The month with the lowest average high temperature is January (8.4°C).

  • Average low temperature in December: 4.3°C

The month with the highest average low temperature is August (24.7°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).

Average pressure in December
Oi, Japan

Average pressure in December - Oi, Japan
  • Average pressure in December: 1016.6mbar

The month with the highest atmospheric pressure is November (1018.4mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).

Average wind speed in December
Oi, Japan

Average wind speed in December - Oi, Japan
  • Average wind speed in December: 10.3km/h

The windiest month (with the highest average wind speed) is April (11.5km/h).
The calmest month (with the lowest average wind speed) is July (8.7km/h).

Average humidity in December
Oi, Japan

Average humidity in December - Oi, Japan
  • Average humidity in December: 61%

The months with the highest relative humidity are June and July (73%).
The month with the lowest relative humidity is January (58%).

Average rainfall in December
Oi, Japan

Average rainfall in December - Oi, Japan
  • Average rainfall in December: 21mm

The wettest month (with the highest rainfall) is October (102mm).
The driest month (with the least rainfall) is December (21mm).

Average rainfall days in December
Oi, Japan

Average rainfall days in December - Oi, Japan
  • Average rainfall days in December: 5.8 days

The month with the highest number of rainy days is June (18.5 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in December
Oi, Japan

Average snowfall in December - Oi, Japan
  • Average snowfall in December: 0mm

The month with the highest snowfall is February (39mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).

Average snowfall days in December
Oi, Japan

Average snowfall days in December - Oi, Japan
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).

Average daylight in December /
Average sunshine in December
Oi, Japan

Average daylight in December / Average sunshine in December - Oi, Japan
  • Average daylight in December: 9h and 5min

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 December: 6h and 3min

The month with the most sunshine is August (Average sunshine: 9h and 48min).
The months with the least sunshine are February and November (Average sunshine: 6h and 12min).

Average sunshine days in December
Oi, Japan

Average sunshine days in December - Oi, Japan
  • Average sunshine days in December: 24.5 days

The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is June (9.1 days).

Average UV index in December
Oi, Japan

Average UV index in December - Oi, Japan
  • Average UV index in December: 3

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).

Average cloud cover in December
Oi, Japan

Average cloud cover in December - Oi, Japan
  • Average cloud cover in December: 28

The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 26).

Average visibility in December
Oi, Japan

Average visibility in December - Oi, Japan
  • Average visibility in December: 10km

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

Oi, Japan

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