December weather forecastHakodate, Japan
December
Weather in December
December is typified by a palpable winter chill in Hakodate, with temperatures diving between -0.6°C (30.9°F) and 2.8°C (37°F). Sea temperatures also record a plunge from 13.1°C (55.6°F) in November to 9.8°C (49.6°F), leading the city to a full-blown winter. The city becomes a winter wonderland, with 31mm (1.22") of snowfall experienced in December, setting it apart from the snow-less November. The increased snowfall brings about shorter daylight hours as the year-end approaches. Admittedly, the escalated wind speeds in December make it feel much colder than November, summing up the winter-dominated weather transition in Hakodate.Temperature
December comes with a drop in the average high-temperature, falling from November's frosty 8.7°C (47.7°F) to an icy 2.8°C (37°F). Hakodate, during the nights of December, averages a temperature close to its daytime high, at a freezing cold -0.6°C (30.9°F).Humidity
In December, the average relative humidity in Hakodate is 75%.Rainfall
In Hakodate, Japan, during December, the rain falls for 7.5 days and regularly aggregates up to 20mm (0.79") of precipitation. Throughout the year, there are 112.7 rainfall days, and 203mm (7.99") of precipitation is accumulated.Snowfall
Months with snowfall in Hakodate, Japan, are January through April, November and December. In Hakodate, in December, during 11.9 snowfall days, 31mm (1.22") of snow is typically accumulated. In Hakodate, during the entire year, snow falls for 57.1 days and aggregates up to 179mm (7.05") of snow.Sea temperature
In Hakodate, the average seawater temperature in December is 9.8°C (49.6°F).Note: Dipping into 9.8°C (49.6°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 13°C (55.4°F) can be jarring.
Daylight
The month with the shortest days in Hakodate is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 06:44 and sunset at 16:07. On the last day of December, in Hakodate, sunrise is at 07:04 and sunset at 16:16 JST.
Sunshine
In Hakodate, the average sunshine in December is 3.2h.UV index
The months with the lowest UV index in Hakodate are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a regular UV index of 1 translates into these guidelines:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. When the Sun is at its strongest around midday, find shade and limit exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hakodate, Japan
- Average high temperature in December: 2.8°C
The warmest month (with the highest average high temperature) is August (23.4°C).
The month with the lowest average high temperature is January (-0.1°C).
- Average low temperature in December: -0.6°C
The month with the highest average low temperature is August (19.6°C).
The coldest month (with the lowest average low temperature) is February (-3.5°C).
Average pressure in December
Hakodate, Japan
- Average pressure in December: 1014.1mbar
The month with the highest atmospheric pressure is November (1017mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in December
Hakodate, Japan
- Average wind speed in December: 24.3km/h
The windiest month (with the highest average wind speed) is December (24.3km/h).
The calmest month (with the lowest average wind speed) is July (12.2km/h).
Average humidity in December
Hakodate, Japan
- Average humidity in December: 75%
The month with the highest relative humidity is July (89%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Hakodate, Japan
- Average rainfall in December: 20mm
The wettest month (with the highest rainfall) is August (25mm).
The driest month (with the least rainfall) is May (12mm).
Average rainfall days in December
Hakodate, Japan
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is July (13 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Hakodate, Japan
- Average snowfall in December: 31mm
The month with the highest snowfall is February (52mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Hakodate, Japan
- Average snowfall days in December: 11.9 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Hakodate, Japan
- Average sea temperature in December: 9.8°C
The best month for swimming (with the highest average sea temperature) is August (21.8°C).
The coldest month (with the lowest average sea temperature) is March (4.9°C).
Average daylight in December /
Average sunshine in December
Hakodate, Japan
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 12min
The month with the most sunshine is May (Average sunshine: 8h and 48min).
The months with the least sunshine are January and February (Average sunshine: 3h and 6min).
Average sunshine days in December
Hakodate, Japan
- Average sunshine days in December: 11 days
The months with the most sunshine days are May and October (17.3 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in December
Hakodate, Japan
- Average UV index in December: 1
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Hakodate, Japan
- Average cloud cover in December: 66
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are September and October (Cloud cover 38).
Average visibility in December
Hakodate, Japan
- Average visibility in December: 9km
The months with the highest visibility are September and October (10km).
The month with the lowest visibility is July (8km).
