January weather forecast
Koya, Japan

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Weather in January

January, like December, is a frosty winter month in Koya, Japan, with an average temperature varying between 0.1°C (32.2°F) and 6.7°C (44.1°F).

Temperature

January stands out as Koya's coldest month, with an average high-temperature of 6.7°C (44.1°F) and a low-temperature of 0.1°C (32.2°F).

Humidity

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

Rainfall

The month with the least rainfall is January, when the rain falls for 15.3 days and typically collects 56mm (2.2") of precipitation.

Snowfall

Months with snowfall are January through April and December. January is the month with the most snowfall. Snow falls for 11.1 days and accumulates 90mm (3.54") of snow.

Daylight

In Koya, the average length of the day in January is 10h and 10min.
On the first day of January, sunrise is at 07:03 and sunset at 16:58. On the last day of the month, sunrise is at 06:56 and sunset at 17:25 JST.

Sunshine

January and February, with an average of 5.2h of sunshine, are months with the least sunshine.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Koya, Japan. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily high UV index of 2 in January leads to these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the coldest month in Koya?

The coldest period in Koya tends to be January, when average temperatures fluctuate between a high of 6.7°C (44.1°F) and a low of 0.1°C (32.2°F).

Is it cold in Koya during January?

Koya in January has an average high-temperature of 6.7°C (44.1°F) and an average low-temperature of 0.1°C (32.2°F).

What is the average humidity in January in Koya?

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

What is the driest month in Koya?

The month with the least rainfall in Koya is January, when the rain falls for 15.3 days and typically collects 56mm (2.2") of precipitation.

How much does it rain in Koya in January?

In Koya, during January, the rain falls for 15.3 days and regularly aggregates up to 56mm (2.2") of precipitation.

When does it snow the most in Koya?

January is the month with the most snowfall in Koya, Japan. Snow falls for 11.1 days and accumulates 90mm (3.54") of snow.

How many days does it snow in January in Koya?

In Koya, Japan, in January, during 11.1 snowfall days, 90mm (3.54") of snow is typically accumulated.

What is the average length of the day in January in Koya?

In January, the average day length in Koya is 10h and 10min.

When is the sunrise / sunset in January in Koya?

In January, on the first day of the month, sunrise is at 07:03 and sunset at 16:58. On the last day of the month, in Koya, Japan, sunrise is at 06:56 and sunset at 17:25 JST.

What are the months with the least sunshine in Koya?

January and February, with an average of 5.2h of sunshine, are months with the least sunshine.

How long on average sun shines in January in Koya?

In January, the average sunshine duration in Koya is 5.2h.

What is the month with the lowest UV index in Koya?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Koya?

The average daily maximum UV index in January in Koya, Japan, is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Koya, Japan

Average temperature in January - Koya, Japan
  • Average high temperature in January: 6.7°C

The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (6.7°C).

  • Average low temperature in January: 0.1°C

The month with the highest average low temperature is August (22.3°C).
The coldest month (with the lowest average low temperature) is January (0.1°C).

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Average pressure in January
Koya, Japan

Average pressure in January - Koya, Japan
  • Average pressure in January: 1019.4mbar

The month with the highest atmospheric pressure is February (1019.5mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).

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Average wind speed in January
Koya, Japan

Average wind speed in January - Koya, Japan
  • Average wind speed in January: 9.5km/h

The windiest month (with the highest average wind speed) is January (9.5km/h).
The calmest months (with the lowest average wind speed) are June and August (6.2km/h).

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Average humidity in January
Koya, Japan

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

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is May (74%).

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Average rainfall in January
Koya, Japan

Average rainfall in January - Koya, Japan
  • Average rainfall in January: 56mm

The wettest month (with the highest rainfall) is July (179mm).
The driest month (with the least rainfall) is January (56mm).

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Average rainfall days in January
Koya, Japan

Average rainfall days in January - Koya, Japan
  • Average rainfall days in January: 15.3 days

The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is February (13.8 days).

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Average snowfall in January
Koya, Japan

Average snowfall in January - Koya, Japan
  • Average snowfall in January: 90mm

The month with the highest snowfall is January (90mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).

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Average snowfall days in January
Koya, Japan

Average snowfall days in January - Koya, Japan
  • Average snowfall days in January: 11.1 days

The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).

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

Average daylight in January / Average sunshine in January - Koya, Japan
  • Average daylight in January: 10h and 1min

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 January: 5h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

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Average sunshine days in January
Koya, Japan

Average sunshine days in January - Koya, Japan
  • Average sunshine days in January: 9.6 days

The month with the most sunshine days is May (14.3 days).
The month with the least sunshine days is July (7.9 days).

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Average UV index in January
Koya, Japan

Average UV index in January - Koya, Japan
  • Average UV index in January: 2

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 2).

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Average cloud cover in January
Koya, Japan

Average cloud cover in January - Koya, Japan
  • Average cloud cover in January: 46

The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in January
Koya, Japan

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

The months with the highest visibility are January, February, March, April, May, August, September, October, November and December (9km).
The months with the lowest visibility are June and July (8km).

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Koya, Japan

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