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Tokyo in January: Weather, Average temperature and Climate

Take a look at past year’s weather for Tokyo in January and see if it is worth visiting.
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January

Weather in Tokyo in January 2025

Good Weather
Chill
☀️
Sunny
🌊
Cold water
Are you considering a trip to Tokyo in January? Well, the weather is usually on your side with an average maximum temperature of +48°F and about 11 sunny days. Just keep in mind that there may be some rain, with an average of 10 rainy days and 69 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • January is usually the coldest month of the year in Tokyo;
  • January is usually the driest month of the year in Tokyo

Average weather

☀️
+48°F
Avg. max. temperature
+21°F
Min.
+66°F
Max.
69 mm
Total precipitation
50%
Avg. humidity
4 m/s
Avg. wind
11 ☀️
Sunny Days
7 ⛅️
Cloudy
10 🌦
Rainy
Our opinion: Tokyo has good weather in January.

Average temperature in Tokyo in January

Here are the expected maximum, average and minimum temperatures in Tokyo for January based on the historical data.
Last Year
Historical Data

The temperature in January is +50°F on average, with a range between a maximum of +57°F during the day and a minimum of +28°F at night.

The average maximum temperature goes down 25% by the end of the month, compared with the beginning of the month, from +54°F to +46°F.

Is Tokyo warm or cold in January?

Tokyo is typically chill in January.

Maximum temperatures go down compared to the previous month from +54°F to +48°F. The minimum temperature also goes down from +41°F to +36°F.

Pack a jumper and a jacket as there will be cooler temperatures.

January is the coldest month in Tokyo, here is the comparison with other months:

Water temperature in Tokyo in January

Water in Tokyo in January is Cold. It varies from +57°F to +63°F, with an average of +60°F. Note that the air temperature is lower than the water temperature, averaging around +48°F.

The water temperature in January is one of the coldest of the entire year:

The warmest water temperatures in Tokyo are reached in August, when the average sea temperature rises to +78°F. The coldest water temperatures are in February, with an average of +57°F.

Can you swim in Tokyo in January?

We would not recommend swimming in Tokyo in January, the water is very cold (+60°F on average). Consider swimming only if you are an experienced cold-water swimmer with proper gear.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
You will need a full-body wetsuit, cap, gloves, a warm change of clothes, and a hot drink ready for after your swim.

Climate in Tokyo in January

Tokyo weather looks like this, on average, in January and the surrounding months.
DecemberJanuaryFebruary
Avg. temperature
+54°F+48°F+50°F
Min. temperature
+23°F+21°F+16°F
Max. temperature
+75°F+66°F+75°F
Rainfall
69 mm69 mm75 mm
Wind
4 m/s4 m/s4 m/s
Avg. water temperature
+63°F+60°F+57°F
Humidity
54%50%52%
Air pressure
1015 HPa1014 HPa1015 HPa
Sunny days
11117
Cloudy days
977
Rainy days
111012
Snowy days
022

January weather is still as good as in December. It’s getting colder in January. From +54°F in the day, the average maximum temperature lowers to +48°F. The rainfall amount in January stays the same as in the previous month with a 69 mm of total precipitation. It feels drier, as humidity decreases from 54% to 50%. The average wind speed doesn’t change much during January, staying around 4 m/s. The amount of sunny days stay about the same, averaging 11 sunny days during the month.

Next month (February) brings a further decline in the weather.

Wind

Wind speed in Tokyo in January based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 10 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Tokyo is gradually increasing during January, going from 3 m/s to 3 m/s over the course of the month.

Rain

Amount of rainfall in mm during January in Tokyo based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in January stands at 35%, leading to total precipitation of around 67 mm. The maximum amount of rainfall per day is around 18 mm, which is considered light rain. January is a pretty wet month with over 11 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how January is compared with other months in the amount of precipitation, total mm:
Tokyo wettest month is October, where a typical day has a 55% chance of precipitation and 233 mm of rainfall per day. January, on the other hand, is the driest month with a mere 32% chance of precipitation and 69 mm of rainfall per day.

Snow

Amount of snow in mm during January in Tokyo based on historical data.
Last Year
Historical Data
The chance of snow on a typical day in January is 0%, for a monthly total of around 0 mm.

January is one of the snowiest months in Tokyo.

Here’s how January is compared with other months in the amount of snow, total mm:

How was the weather last January in Tokyo?

This is the weather in Tokyo in January 2023:
1 January
☀️
+54°F
2 January
☀️
+51°F
3 January
☀️
+51°F
4 January
☀️
+51°F
5 January
☀️
+50°F
6 January
☁️
+49°F
7 January
☀️
+50°F
8 January
☀️
+54°F
9 January
☀️
+55°F
10 January
☀️
+48°F
11 January
☀️
+50°F
12 January
☀️
+54°F
13 January
☁️
+56°F
14 January
☁️
+53°F
15 January
🌧️
+53°F
16 January
☀️
+45°F
17 January
☁️
+45°F
18 January
☀️
+54°F
19 January
🌧️
+47°F
20 January
☀️
+53°F
21 January
☁️
+47°F
22 January
☁️
+47°F
23 January
☁️
+43°F
24 January
☀️
+53°F
25 January
☀️
+37°F
26 January
☀️
+46°F
27 January
🌧️
+43°F
28 January
☀️
+45°F
29 January
☀️
+46°F
30 January
☀️
+50°F
31 January
☀️
+46°F
In January 2023 Tokyo had 21 sunny days, 7 cloudy days, and 3 rainy days. The average maximum temperature was +50°F, with an absolute maximum of +57°F and a minimum of +37°F. The average humidity was 51%, with a maximum of 93% and a minimum of 21%. The average wind speed was 4 m/s, with a maximum of 17 m/s and a minimum of 0 m/s.
Are you planning a trip in January?

Climate Change Over the Years

This is how Tokyo climate has changed over the last 43 years.

The climate in Tokyo in January has not changed that much over the last 43 years.

The average temperature was the lowest in 1984 (+65°F) and the highest in 2023 (+72°F). The driest year was 1984 with only 896 mm of rainfall, and the wettest year was 2021 with 5634 mm.

FAQ

Frequently asked questions about the weather in Tokyo in January:

Is January a good time to visit Tokyo?

January is a really good time to go to Tokyo. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Tokyo.

Can you sunbathe in Tokyo in January?

Not really, January is not the best time to sunbathe, unless you visit a local solarium.

Can you swim in Tokyo in January?

Swimming in Tokyo in January is challenging and not recommended for inexperienced swimmers or without proper equipment and preparation.

Is Tokyo rainy in January?

Tokyo is often rainy in January. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Tokyo in January?

The amount of sunny days in Tokyo during January varies; prepare for a mix of clouds and sun.

Other cities in Japan

Check out the weather for other cities in Japan.

Monthly weather in Tokyo

Source of the data

For this page, we’ve looked at the typical weather in Tokyo, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.