December weather forecastHamamatsu, Japan
December weather for Hamamatsu, Japan: December has the shortest days of the year in Hamamatsu, Japan, with an average of 9h and 54min of daylight. In Hamamatsu, Japan, the average seawater temperature in December is 17.4°C (63.3°F).
December
Weather in December
Come December, Hamamatsu embraces colder days and a touch of winter's chill. Temperature drops substantially from November's figures, leading to a crisp, chilly atmosphere in Hamamatsu. However, December applauds the decreasing trend in precipitation, leading to drier days. Despite the reduction in daylight hours, the city basks in a reasonable amount of sunshine. The sea temperature declines, offering a chilly embrace to anyone daring a dip.Temperature
December involves a decrease in temperature, down from an enjoyable 16.4°C (61.5°F) in November to a cool 10.8°C (51.4°F). Hamamatsu indicates a consistently low-temperature of 5.9°C (42.6°F) during the nights of December.Humidity
In Hamamatsu, the average relative humidity in December is 69%.Rainfall
In December, in Hamamatsu, the rain falls for 7.8 days. Throughout December, 47mm (1.85") of precipitation is accumulated. Throughout the year, there are 160.9 rainfall days, and 1265mm (49.8") of precipitation is accumulated.Snowfall
In Hamamatsu, snow does not fall in January, March through December.Sea temperature
In Hamamatsu, in December, the average water temperature is 17.4°C (63.3°F).Note: The majority of individuals find swimming in 17.4°C (63.3°F) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 06:38 and sunset at 16:38. On the last day of December, in Hamamatsu, sunrise is at 06:56 and sunset at 16:48 JST.
Sunshine
In December, the average sunshine in Hamamatsu is 6.3h.UV index
In Hamamatsu, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, an average UV index of 3 transforms into the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hamamatsu, Japan
- Average high temperature in December: 10.8°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 (8.5°C).
- Average low temperature in December: 5.9°C
The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (3.2°C).
Average pressure in December
Hamamatsu, Japan
- Average pressure in December: 1017.7mbar
The month with the highest atmospheric pressure is November (1018.6mbar).
The month with the lowest atmospheric pressure is June (1009mbar).
Average wind speed in December
Hamamatsu, Japan
- Average wind speed in December: 21.6km/h
The windiest month (with the highest average wind speed) is January (22.9km/h).
The calmest months (with the lowest average wind speed) are July and August (12.2km/h).
Average humidity in December
Hamamatsu, Japan
- Average humidity in December: 69%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (65%).
Average rainfall in December
Hamamatsu, Japan
- Average rainfall in December: 47mm
The wettest month (with the highest rainfall) is July (205mm).
The driest month (with the least rainfall) is January (37mm).
Average rainfall days in December
Hamamatsu, Japan
- Average rainfall days in December: 7.8 days
The month with the highest number of rainy days is July (20.4 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in December
Hamamatsu, Japan
- Average snowfall in December: 0mm
The month with the highest snowfall is February (1mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Hamamatsu, Japan
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.2 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
Hamamatsu, Japan
- Average sea temperature in December: 17.4°C
The best month for swimming (with the highest average sea temperature) is August (26.8°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).
Average daylight in December /
Average sunshine in December
Hamamatsu, Japan
- Average daylight in December: 9h and 54min
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 December: 6h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days in December
Hamamatsu, Japan
- Average sunshine days in December: 21.8 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in December
Hamamatsu, Japan
- Average UV index in December: 3
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Hamamatsu, Japan
- Average cloud cover in December: 28
The month with the most cloud cover is June (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 25).
Average visibility in December
Hamamatsu, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
