Tokyo
Japan
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Tokyo, Japan

A stunning view of the cityscape of Tokyo, Japan, taken at dusk
A stunning view of the cityscape of Tokyo, Japan, taken at dusk
January is a cold month in Tokyo. The lowest temperatures average 2°C (35.6°F), while the highest average 8°C (46.4°F). Cold winds blow in January, making the weather feel even colder, especially at night when temperatures go way below the freezing point. Snow falls for an average of three days but may last for several days before clearing out.
The sun shines the most in January, lasting for up to six hours per day, making the daytimes moderately warm. Basking in the sun and skating take place, considering the sun remains steady and reliable.
January remains the driest month of the year, receiving only nine rainy days that fetch a low precipitation of 43.2mm (1.7") on average.
The ocean is mildly cold, and January is not a good period for water activities. Averaging 17°C (62.6°F), the brave still take to swimming in the cold waters and later bask in the warm sun.
Crowds are minimal due to the cold weather, but the locals go on with their daily engagements without difficulty.

What is the coldest month in Tokyo?

January is the coldest month, with an average high-temperature of 9.6°C (49.3°F) and an average low-temperature of 0.9°C (33.6°F).

What is the temperature in January in Tokyo?

In January, in Tokyo, Japan, the average high-temperature is 9.6°C (49.3°F), and the average low-temperature is 0.9°C (33.6°F).

What is the least humid month in Tokyo?

January is the least humid month in Tokyo, with an average relative humidity of 52%.

What is the average humidity in January in Tokyo?

In Tokyo, the average relative humidity in January is 52%.

How many days does it rain in January in Tokyo?

In Tokyo, in January, during 10.3 rainfall days, 65.3mm (2.6") of precipitation is typically accumulated.

When does it start to snow in Tokyo?

January is the first month it typically snows in Tokyo, Japan. Throughout January, in the average 2.8 snowfall days, it receives 50mm (2") of snow.

When does it snow the most in Tokyo?

Months with the most snowfall in Tokyo are January and February, with an average 50mm (2") of accumulated snow.

How cold is the water in January in Tokyo?

In Tokyo, Japan, in January, the average water temperature is 15.7°C (60.3°F). For swimming, a surface water temperature of 15.7°C (60.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Tokyo have in January?

In January, the average length of the day is 10.1h.

What month has the most sunshine in Tokyo?

With an average of 6h of sunshine, January has the most sunshine of the year in Tokyo, Japan.

How many hours of sunshine does Tokyo have in January?

The average sunshine in January is 6h.

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

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

How high is the UV index in January in Tokyo?

In January, the average daily maximum UV index in Tokyo is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in January - Tokyo, Japan
  • Average high temperature in January: 9.6°C

The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (9.6°C).

  • Average low temperature in January: 0.9°C

The month with the highest average low temperature is August (23°C).
The coldest month (with the lowest average low temperature) is January (0.9°C).

Average humidity in January - Tokyo, Japan
  • Average humidity in January: 52%

The month with the highest relative humidity is July (77%).
The month with the lowest relative humidity is January (52%).

Average rainfall in January - Tokyo, Japan
  • Average rainfall in January: 65.3mm

The wettest month (with the highest rainfall) is May (145.4mm).
The driest month (with the lowest rainfall) is February (58.2mm).

Average rainfall days in January - Tokyo, Japan
  • Average rainfall days in January: 10.3 days

The month with the highest number of rainy days is October (13 days).
The month with the lowest number of rainy days is July (8.4 days).

Average snowfall in January - Tokyo, Japan
  • Average snowfall in January: 50mm

Months with the highest snowfall are January and February (50mm).
Months with the lowest snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in January - Tokyo, Japan
  • Average snowfall days in January: 2.8 days

The month with the highest number of snowfall days is February (3.7 days).
Months with the lowest number of snowfall days are May, June, July, August, September, October and November (0 days).

Average sea temperature in January - Tokyo, Japan
  • Average sea temperature in January: 15.7°C

The best month for swimming (with the highest average sea temperature) is August (25.7°C).
The coldest month (with the lowest average sea temperature) is February (14°C).

Average daylight in January / Average sunshine in January - Tokyo, Japan
  • Average daylight in January: 10.1h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in January: 6h

The month with most sunshine is January (Average sunshine: 6h).
The month with least sunshine is September (Average sunshine: 4h).

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

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 2).