December weather forecastMinamata, Japan

December

Weather in December

The first month of the winter, December, is also a fresh month in Minamata, Japan, with an average temperature varying between 12.8°C (55°F) and 9.1°C (48.4°F).

Temperature

With the onset of December, Minamata's average high-temperature adjusts, receding from November's refreshing 17.9°C (64.2°F) to a fresh 12.8°C (55°F). Minamata records a consistent average nighttime temperature of 9.1°C (48.4°F) in December, slightly lower than the daytime high.

Humidity

In December, the average relative humidity in Minamata is 74%.

Rainfall

In December, the rain falls for 16.2 days. Throughout December, 58mm (2.28") of precipitation is accumulated. In Minamata, during the entire year, the rain falls for 190.1 days and collects up to 1194mm (47.01") of precipitation.

Snowfall

In Minamata, snow does not fall in March through December.

Sea temperature

In Minamata, in December, the average water temperature is 19.3°C (66.7°F).
Note: In 19.3°C (66.7°F), swimming is not an enjoyable activity for most. As the temperature decreases from 21°C (69.8°F) to 15°C (59°F), it becomes harder to control breathing.

Daylight

The month with the shortest days is December, with an average of 10h and 6min of daylight.
On the first day of December, sunrise is at 07:01 and sunset at 17:13. On the last day of the month, sunrise is at 07:19 and sunset at 17:23 JST.

Sunshine

In Minamata, Japan, the average sunshine in December is 4.5h.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily high UV index of 3 in December leads to these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Frequently asked questions

An average high-temperature, in December, in Minamata, is 12.8°C (55°F) and the average low-temperature is 9.1°C (48.4°F). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is estimated at 30°C (86°F).

In December, the average relative humidity in Minamata, Japan, is 74%.

In Minamata, Japan, during December, the rain falls for 16.2 days and regularly aggregates up to 58mm (2.28") of precipitation.

March through December are months without snowfall in Minamata.

In Minamata, in December, it doesn't snow. In January, it regularly snows.

In Minamata, the average seawater temperature in December is 19.3°C (66.7°F). For swimming, a surface water temperature of 19.3°C (66.7°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

December has the shortest days of the year in Minamata, with an average of 10h and 6min of daylight.

In Minamata, the average day length in December is 10h and 5min.

In December, on the first day of the month, sunrise is at 07:01 and sunset at 17:13. On the last day of the month, sunrise is at 07:19 and sunset at 17:23 JST.

In December, the average sunshine duration in Minamata is 4.5h.

The months with the lowest UV index in Minamata, Japan, are January, February and December, with an average maximum UV index of 3.

In December, the average daily maximum UV index in Minamata, Japan, is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat 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 sea temperature
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Minamata, Japan

  • Average high temperature in December: 12.8°C

The warmest month (with the highest average high temperature) is August (29.4°C).
The month with the lowest average high temperature is January (10.8°C).

  • Average low temperature in December: 9.1°C

The month with the highest average low temperature is August (25.3°C).
The coldest month (with the lowest average low temperature) is January (6.8°C).

Average pressure in December
Minamata, Japan

  • Average pressure in December: 1021.2mbar

The month with the highest atmospheric pressure is January (1021.7mbar).
The month with the lowest atmospheric pressure is June (1008mbar).

Average wind speed in December
Minamata, Japan

  • Average wind speed in December: 19.8km/h

The windiest month (with the highest average wind speed) is December (19.8km/h).
The calmest month (with the lowest average wind speed) is June (11.2km/h).

Average humidity in December
Minamata, Japan

  • Average humidity in December: 74%

The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is March (72%).

Average rainfall in December
Minamata, Japan

  • Average rainfall in December: 58mm

The wettest month (with the highest rainfall) is June (261mm).
The driest month (with the least rainfall) is January (44mm).

Average rainfall days in December
Minamata, Japan

  • Average rainfall days in December: 16.2 days

The month with the highest number of rainy days is July (22.2 days).
The month with the least rainy days is October (11.2 days).

Average snowfall in December
Minamata, Japan

  • Average snowfall in December: 0mm

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

Average snowfall days in December
Minamata, Japan

  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is January (1.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

Average sea temperature in December
Minamata, Japan

  • Average sea temperature in December: 19.3°C

The best month for swimming (with the highest average sea temperature) is August (27.9°C).
The coldest month (with the lowest average sea temperature) is March (16.2°C).

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

  • Average daylight in December: 10h and 6min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in December: 4h and 30min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in December
Minamata, Japan

  • Average sunshine days in December: 10.5 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (7.5 days).

Average UV index in December
Minamata, Japan

  • Average UV index in December: 3

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 December
Minamata, Japan

  • Average cloud cover in December: 52

The month with the most cloud cover is June (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in December
Minamata, Japan

  • Average visibility in December: 10km

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