January weather forecast
Kumamoto, Japan

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Weather in January

Kumamoto's weather space in January is somewhat chilly, with an observable fluctuation between the high of 8.3°C (46.9°F) and a low of 1.7°C (35.1°F). Compared to many parts of the world, Kumamoto experiences a near-moderate winter. Expect layers of white fluff in January as there are some light snowfalls that may blanket the city for roughly three days. As the new year begins, rush outdoors during the day and seize the moderate sunshine before the cold of the night sets in. The changeover from January to February brings a slight escalation of warmth although the local weather remains relatively cold.

Temperature

January is the month when Kumamoto experiences its coldest temperatures, averaging a high of 8.3°C (46.9°F) and a low of 1.7°C (35.1°F).

Humidity

In Kumamoto, the average relative humidity in January is 74%.

Rainfall

January is the month with the least rainfall. Rain falls for 10.5 days and accumulates 36mm (1.42") of precipitation.

Snowfall

Months with snowfall are January through March and December. January is the month with the most snowfall in Kumamoto. Snow falls for 3.3 days and accumulates 16mm (0.63") of snow.

Sea temperature

In January, the average sea temperature is 19°C (66.2°F).
Note: Most people find swimming in 19°C (66.2°F) to be not enjoyable. The control of one's breathing becomes more challenging as the water temperature drops below 21°C (69.8°F).

Daylight

In Kumamoto, the average length of the day in January is 10h and 16min.
On the first day of January in Kumamoto, Japan, sunrise is at 07:19 and sunset at 17:21. On the last day of the month, sunrise is at 07:13 and sunset at 17:47 JST.

Sunshine

January has the least sunshine of the year, with an average of 5.1h of sunshine.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 2 during January leads to these instructions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What part of the year is the coldest in Kumamoto?

In Kumamoto, January is the month with the lowest recorded average temperatures, measuring a high of 8.3°C (46.9°F) and a low of 1.7°C (35.1°F).

What are January temperatures in Kumamoto?

The high-temperature, in January, in Kumamoto, is 8.3°C (46.9°F), while the low-temperature averages to 1.7°C (35.1°F).

What is the average humidity in January in Kumamoto?

In January, the average relative humidity in Kumamoto, Japan, is 74%.

What is the driest month in Kumamoto?

January is the month with the least rainfall in Kumamoto, Japan. Rain falls for 10.5 days and accumulates 36mm (1.42") of precipitation.

How much does it rain in Kumamoto in January?

In Kumamoto, Japan, during January, the rain falls for 10.5 days and regularly aggregates up to 36mm (1.42") of precipitation.

When does it snow the most in Kumamoto?

January is the month with the most snowfall in Kumamoto, Japan. Snow falls for 3.3 days and accumulates 16mm (0.63") of snow.

How many days does it snow in January in Kumamoto?

In January, in Kumamoto, Japan, it is snowing for 3.3 days. Throughout January, 16mm (0.63") of snow is accumulated.

What is the sea temperature in January in Kumamoto?

In January, the average sea temperature in Kumamoto is 19°C (66.2°F). Swimming in 19°C (66.2°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Kumamoto have in January?

The average day length in January in Kumamoto is 10h and 16min.

What time are sunrise and sunset in January in Kumamoto?

On the first day of January in Kumamoto, sunrise is at 07:19 and sunset at 17:21. On the last day of the month, sunrise is at 07:13 and sunset at 17:47 JST.

What is the month with the least sunshine in Kumamoto?

The month with the least sunshine in Kumamoto is January, with an average of 5.1h of sunshine.

How many hours of sunshine does Kumamoto have in January?

In January, the average sunshine duration is 5.1h.

When is the lowest UV index in Kumamoto?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Kumamoto, Japan.

What is the UV index intensity in January in Kumamoto?

In January, the average daily maximum UV index in Kumamoto is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
10.4°C 50.7°F
8.3°C 46.9°F
10.3°C 50.5°F
Average low temperature
4.4°C 39.9°F
1.7°C 35.1°F
3.1°C 37.6°F
Average pressure
1021.2mbar 30.16inHg
1021.8mbar 30.17inHg
1020.7mbar 30.14inHg
Average wind speed
8.1km/h 5mph
7.9km/h 4.9mph
8.5km/h 5.3mph
Average max. wind speed
8.8km/h 5.5mph
8.6km/h 5.3mph
9.2km/h 5.7mph
Average wind speed gusts
11.8km/h 7.3mph
11.6km/h 7.2mph
12.5km/h 7.8mph
Average humidity
75%
74%
74%
Average rainfall
49mm 1.93"
36mm 1.42"
62mm 2.44"
Average rainfall days
12.1
10.5
12.1
Average snowfall
13mm 0.51"
16mm 0.63"
6mm 0.24"
Average snowfall days
1.6
3.3
1.8
Average sea temperature
21°C 69.8°F
19°C 66.2°F
18°C 64.4°F
Average daylight
10h 0min
10h 2min
11h 0min
Average sunshine
5h 2min
5h 1min
6h 1min
Average sunshine days
16
16.4
13.5
Average UV index
2
2
3
Average cloud cover
41%
43%
44%
Average visibility
9km 5.6mi
9km 5.6mi
9km 5.6mi

Average temperature in January
Kumamoto, Japan

Average temperature in January - Kumamoto, Japan
  • Average high temperature in January: 8.3°C

The warmest month (with the highest average high temperature) is August (30.4°C).
The month with the lowest average high temperature is January (8.3°C).

  • Average low temperature in January: 1.7°C

The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).

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Average pressure in January
Kumamoto, Japan

Average pressure in January - Kumamoto, Japan
  • Average pressure in January: 1021.8mbar

The month with the highest atmospheric pressure is January (1021.8mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).

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Average wind speed in January
Kumamoto, Japan

Average wind speed in January - Kumamoto, Japan
  • Average wind speed in January: 7.9km/h

The windiest month (with the highest average wind speed) is March (8.7km/h).
The calmest month (with the lowest average wind speed) is June (7km/h).

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Average humidity in January
Kumamoto, Japan

Average humidity in January - Kumamoto, Japan
  • Average humidity in January: 74%

The month with the highest relative humidity is July (83%).
The months with the lowest relative humidity are March and April (72%).

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Average rainfall in January
Kumamoto, Japan

Average rainfall in January - Kumamoto, Japan
  • Average rainfall in January: 36mm

The wettest month (with the highest rainfall) is June (216mm).
The driest month (with the least rainfall) is January (36mm).

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Average rainfall days in January
Kumamoto, Japan

Average rainfall days in January - Kumamoto, Japan
  • Average rainfall days in January: 10.5 days

The month with the highest number of rainy days is July (23.4 days).
The month with the least rainy days is January (10.5 days).

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Average snowfall in January
Kumamoto, Japan

Average snowfall in January - Kumamoto, Japan
  • Average snowfall in January: 16mm

The month with the highest snowfall is January (16mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in January
Kumamoto, Japan

Average snowfall days in January - Kumamoto, Japan
  • Average snowfall days in January: 3.3 days

The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in January
Kumamoto, Japan

Average sea temperature in January - Kumamoto, Japan
  • Average sea temperature in January: 19°C

The best month for swimming (with the highest average sea temperature) is August (28°C).
The coldest months (with the lowest average sea temperature) are February and March (18°C).

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

Average daylight in January / Average sunshine in January - Kumamoto, Japan
  • Average daylight in January: 10h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in January
Kumamoto, Japan

Average sunshine days in January - Kumamoto, Japan
  • Average sunshine days in January: 16.4 days

The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is July (4.9 days).

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Average UV index in January
Kumamoto, Japan

Average UV index in January - Kumamoto, 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 and December (UV index 2).

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Average cloud cover in January
Kumamoto, Japan

Average cloud cover in January - Kumamoto, Japan
  • Average cloud cover in January: 43

The month with the most cloud cover is June (Cloud cover 50).
The month with the least cloud cover is October (Cloud cover 31).

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Average visibility in January
Kumamoto, Japan

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

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

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Kumamoto, Japan

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