Sendai Weather in January

 Season: Winter
 What is the weather like in Sendai in January? 
Sendai weather in January is very cold during the day, and freezing cold during nighttime. There is no much rain throughout the month, but snowfall is very likely to occur, making the city covered in pure white.

January: Coldest Month in Sendai

Average high temperature: 5 degrees Celsius (41 degrees Fahrenheit)
Average low temperature: -2 degrees Celsius (28.4 degrees Fahrenheit)

In Sendai, there’s a distinct temperature difference between daytime and nighttime in January. During the day, the temperature generally stays above 0°C (32℉), fluctuating between 2°C (35.6℉) and 6°C (42.8℉) most of the time, with occasional highs reaching around 8°C (46.4℉). At night, the temperature often drops below freezing point, typically hovering between -2°C (℉) and -4°C (24.8℉), with occasional lows reaching -6°C (21.2℉).

Precipitation: Low Rainfall & Frequent Snowfalls; Humidity

This month’s rainfall is among the lowest of the year, averaging 37mm and only 9 rainy days. On the occasions when it does rain, drizzle is the norm. Snow lovers are in luck: according to past weather data, January is Sendai’s snowiest month, with average snowfall ranging from 21-62mm and an average of eight snowy days. So, if you visit Sendai in January 2026, you’re very likely to enjoy the magical snow-covered landscape.

Sendai is located near the sea, and the ocean provides a lot of water vapor, so it is comfortably humid even in the coldest January, with an average humidity of about 66%.

Daylength & Sunshine Hours

Sunrise time (1st – 31st): 06:54 – 06:44
Sunset time (1st – 31st): 16:27 – 16:58

Sunsets are very early throughout January, meaning daylight hours are short, ranging from 9.5 to 10 hours from the beginning to the end of the month. Fortunately, the month offers a high probability of sunshine, with approximately 17 clear days and an average of 5 hours of sunshine per day, making it ideal for outdoor sightseeing.

Although UV rays are very weak this month, with an index of only 2, if there are large areas of snow accumulations, it’s best for you to wear sunglasses to prevent glare from the snow reflection.

Warmth Measures for Sendai Trip in January

 Clothing
To withstand the cold climate of January, the core is a down jacket or thick coat with warm linings, preferably a mid-length one for greater warmth. Inner layer can be a sweater, or thermal underwear plus a vest. For the lower body, wearing thick woolen trousers with a pair of thermal pants underneath would be enough. Winter dress can be a stylish option for female tourists, but make sure you wear a pair of comfortable thermal tights.

 Footwear
Sendai in January is likely to be covered in ice and snow, so it is best to wear high-top boots with non-slip and waterproof features to ensure safety when walking around the city. In addition, mid-calf wool socks are the best choice for keeping warm in winter.

 Other Items

When going out, a woolen hat, scarf, and gloves are essential, especially when sunshine is absent. Also, pack a few warming pads in your carry-on bag and apply them to your back, waist, or soles of your feet for instant warmth.

Travel Recommendations for Sendai Trip in January

1. January is a great time to enjoy snowy scenery, especially in the mountainous areas surrounding Sendai, such as the Miyagi Zao region, where spectacular “frost-covered trees” are displayed each winter. You can take a bus from Yamagata Station or take a cable car up the mountain to enjoy the view. Skiers can also enjoy the large ski resorts there, or head to the Spring Valley Izumikogen, which is closer to Sendai city center.

2. In this cold weather, soaking in a warm hot spring is a very enjoyable thing. Akiu Onsen and Sakunami Onsen are both famous hot spring resorts with a long history, only a 30-minute drive from Sendai city.

Travel Tips

1. Since it gets dark very early in January, if you want to see more places during the day, it’s best to start your trip early to avoid missing the opening hours of some famous attractions, such as Zuihoden, which closes around 4:30 p.m.

2. To ensure a smooth viewing experience in the Miyagi Zao region, you’d better check the weather forecast in advance especially if you want to take the cable car, which will be unavailable during snowstorms.

Sendai Weather by Month