January weather forecast
Hakodate, Japan

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Weather in January

The year in Hakodate, Japan kicks off with January characterized by cold temperatures that hover between -3.2°C (26.2°F) and 0.1°C (32.2°F), additionally, with 77% relative humidity, it adds feel to the chill. Despite the cold weather, January still offers 9.5 daylight hours, providing plenty of opportunities for winter activities. It is good to note that Hakodate's January weather conditions are suited for people who enjoy the winter season. Compared to the following month, the weather in January experiences a higher number of snowfall days hence, adding to the magical winter spectacle of the city. However, residents and visitors should brace themselves for the gusty winds that January brings.

Temperature

Hakodate's coldest temperatures are experienced in January, with average high temperatures of -0.1°C (31.8°F) and lows of -3.2°C (26.2°F).

Humidity

In Hakodate, the average relative humidity in January is 77%.

Rainfall

In Hakodate, in January, during 4.8 rainfall days, 13mm (0.51") of precipitation is typically accumulated. In Hakodate, during the entire year, the rain falls for 112.7 days and collects up to 203mm (7.99") of precipitation.

Snowfall

Months with snowfall in Hakodate, Japan, are January through April, November and December. In January, in Hakodate, it is snowing for 15.3 days. Throughout January, 45mm (1.77") of snow is accumulated. Throughout the year, there are 57.1 snowfall days, and 179mm (7.05") of snow is accumulated.

Sea temperature

In Hakodate, the average seawater temperature in January is 7.3°C (45.1°F).
Note: Entering waters of 7.3°C (45.1°F) is life-endangering. A mere moment in 13°C (55.4°F) waters feels piercing cold, and below 10°C (50°F) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.

Daylight

In Hakodate, the average length of the day in January is 9h and 32min.
On the first day of January, sunrise is at 07:04 and sunset at 16:16. On the last day of the month, sunrise is at 06:50 and sunset at 16:49 JST.

Sunshine

January and February, with an average of 3.1h of sunshine, are months with the least sunshine in Hakodate.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In January, an average UV index of 1 transforms into the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoiding the Sun during its peak radiation time around midday is a healthy practice. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

What are the coldest months in Hakodate?

January is the coldest month in Hakodate, Japan, with the temperature often reaching an average high of -0.1°C (31.8°F) and an average low of -3.2°C (26.2°F).

How cold is January in Hakodate?

The average high-temperature and low-temperature during January are -0.1°C (31.8°F) and -3.2°C (26.2°F) respectively.

What is the average humidity in January in Hakodate?

In Hakodate, Japan, the average relative humidity in January is 77%.

How many days does it rain in January in Hakodate?

In Hakodate, in January, it is raining for 4.8 days, with typically 13mm (0.51") of accumulated precipitation.

How much does it snow in Hakodate in January?

In Hakodate, Japan, in January, during 15.3 snowfall days, 45mm (1.77") of snow is typically accumulated.

What is the sea water temperature in January in Hakodate?

In Hakodate, the average seawater temperature in January is 7.3°C (45.1°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

How many hours of daylight does Hakodate have in January?

In Hakodate, Japan, the average day length in January is 9h and 32min.

What time are sunrise and sunset in January in Hakodate?

On the first day of January, sunrise is at 07:04 and sunset at 16:16. On the last day of the month, sunrise is at 06:50 and sunset at 16:49 JST.

What is the month with the least sunshine in Hakodate?

The months with the least sunshine in Hakodate, Japan, are January and February, with an average of 3.1h of sunshine.

How many hours of sunshine does Hakodate have in January?

In January, the average sunshine duration is 3.1h.

When is the lowest UV index in Hakodate?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Hakodate, Japan.

What is the UV index reading in January in Hakodate?

The average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.

Average temperature in January
Hakodate, Japan

Average temperature in January - Hakodate, Japan
  • Average high temperature in January: -0.1°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 January: -3.2°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).

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Average pressure in January
Hakodate, Japan

Average pressure in January - Hakodate, Japan
  • Average pressure in January: 1014.2mbar

The month with the highest atmospheric pressure is November (1017mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).

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Average wind speed in January
Hakodate, Japan

Average wind speed in January - Hakodate, Japan
  • Average wind speed in January: 23.2km/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).

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Average humidity in January
Hakodate, Japan

Average humidity in January - Hakodate, Japan
  • Average humidity in January: 77%

The month with the highest relative humidity is July (89%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in January
Hakodate, Japan

Average rainfall in January - Hakodate, Japan
  • Average rainfall in January: 13mm

The wettest month (with the highest rainfall) is August (25mm).
The driest month (with the least rainfall) is May (12mm).

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Average rainfall days in January
Hakodate, Japan

Average rainfall days in January - Hakodate, Japan
  • Average rainfall days in January: 4.8 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).

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Average snowfall in January
Hakodate, Japan

Average snowfall in January - Hakodate, Japan
  • Average snowfall in January: 45mm

The month with the highest snowfall is February (52mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in January
Hakodate, Japan

Average snowfall days in January - Hakodate, Japan
  • Average snowfall days in January: 15.3 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).

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Average sea temperature in January
Hakodate, Japan

Average sea temperature in January - Hakodate, Japan
  • Average sea temperature in January: 7.3°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).

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Average daylight in January /
Average sunshine in January
Hakodate, Japan

Average daylight in January / Average sunshine in January - Hakodate, Japan
  • Average daylight in January: 9h and 3min

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 January: 3h and 1min

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).

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Average sunshine days in January
Hakodate, Japan

Average sunshine days in January - Hakodate, Japan
  • Average sunshine days in January: 12.8 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).

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Average UV index in January
Hakodate, Japan

Average UV index in January - Hakodate, Japan
  • Average UV index in January: 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).

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Average cloud cover in January
Hakodate, Japan

Average cloud cover in January - Hakodate, Japan
  • Average cloud cover in January: 69

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).

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Average visibility in January
Hakodate, Japan

Average visibility in January - Hakodate, Japan
  • Average visibility in January: 9km

The months with the highest visibility are September and October (10km).
The month with the lowest visibility is July (8km).

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Hakodate, Japan

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