Yamagata, Japan, features a humid continental climate with four distinct seasons, marked by hot, humid summers and cold, snowy winters. The region is famous for heavy snowfall, vibrant seasonal festivals, and beautiful natural scenery, including cherry blossoms in spring and colourful foliage in autumn. Each season offers unique experiences for travellers.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Yamagata’s climate is characterised by significant seasonal variation, shaped by its inland location and proximity to the Sea of Japan. Winters (December–February) are cold and snowy, with average daily highs around 3–4°C and lows dipping to -6°C. Snowfall is heavy, especially inland and in mountainous areas, making Yamagata a renowned destination for winter sports and hot springs. January is typically the snowiest month, with snow depths often exceeding 1 metre in some areas.
Summers (June–August) are warm and humid, with average highs reaching 27–30°C in August. The rainy season, or tsuyu, occurs from mid-June to mid-July, bringing frequent showers and high humidity. July and August are the wettest months, while autumn (September–November) brings cooler, pleasant weather with highs from 24°C in September to 12°C in November. Spring (March–May) is chilly at first, gradually warming to 20°C by May, and is celebrated for cherry blossoms blooming from mid-April to early May. Sunshine hours peak in spring and early summer, with daylight ranging from 10 hours in winter to 15 hours in summer. Winds are generally light to moderate, but can feel brisk in winter.
Yamagata’s climate supports a rich tapestry of outdoor activities year-round, from skiing and snowboarding in winter to hiking, onsen bathing, and festival-going in other seasons. The city’s distinct seasons and dramatic weather changes make it a fascinating destination for travellers seeking both adventure and natural beauty.
| Average climate data for Yamagata, Japan | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 3 | 4 | 8 | 16 | 22 | 25 | 28 | 30 | 25 | 19 | 12 | 6 | 30 |
| Average minimum temperature (°C) | -4 | -4 | -1 | 4 | 10 | 15 | 19 | 20 | 16 | 9 | 3 | -1 | -4 |
| Average precipitation (mm) | 75 | 71 | 66 | 68 | 82 | 104 | 142 | 148 | 133 | 77 | 82 | 77 | 1,125 |
| Average rainfall days (days) | 29 | 25 | 24 | 18 | 17 | 19 | 21 | 19 | 20 | 19 | 22 | 27 | 261 |
| Average snowfall (mm) | 1,653 | 1,484 | 703 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 121 | 933 | 4,925 |
| Average daily daylight hours (h) | 9 | 10 | 12 | 13 | 14 | 14 | 14 | 13 | 12 | 11 | 10 | 9 | 12 |
| Average daily sunshine hours (h) | 4 | 4 | 5 | 6 | 7 | 5 | 5 | 6 | 4 | 4 | 4 | 3 | 5 |
| Average UV index | 2 | 3 | 4 | 6 | 8 | 9 | 10 | 9 | 7 | 5 | 3 | 2 | 6 |
The best time to visit Yamagata is in spring (mid-April to early June) and autumn (late September to early November). These periods offer mild temperatures, minimal rainfall, and spectacular natural scenery, including cherry blossoms and autumn foliage. Outdoor activities are especially enjoyable, and the weather is comfortable for sightseeing.
The most challenging time to visit Yamagata is during the peak of winter (January–February) if you are not interested in snow activities. Heavy snowfall can disrupt transport and outdoor plans, while cold temperatures require proper preparation. The rainy season in late June to July can also limit outdoor activities due to frequent showers and high humidity.
Winters in Yamagata are cold and snowy, with average daytime highs around 3–4°C and nighttime lows often reaching -6°C. Snowfall is heavy, especially in inland and mountainous areas, making it a popular destination for winter sports.
Yamagata’s rainy season, known as tsuyu, typically occurs from mid-June to mid-July. This period brings frequent showers and high humidity, especially in July, which is usually the wettest month of the year.
Cherry blossoms in Yamagata generally bloom from mid-April to early May. This is a popular time for hanami (blossom viewing) and outdoor activities, as temperatures are mild and the region’s parks and landscapes are especially scenic.
Yes, Yamagata is known for its heavy snowfall, particularly in winter months from December to February. Snow depths can exceed 1 metre in some areas, attracting visitors for skiing, snowboarding, and onsen experiences.
Pack warm clothing, boots, and snow gear for winter visits. In spring and autumn, bring layers for variable temperatures. For summer, light, breathable clothing and rain gear are recommended due to humidity and frequent showers.
Check weather forecasts regularly, especially in winter and during the rainy season. Snow can disrupt public transport and driving, so plan accordingly. In mountainous areas, be prepared for sudden weather changes and carry appropriate gear.
Sunshine hours are highest in spring and early summer, with daily daylight ranging from about 10 hours in winter to up to 15 hours in summer. Cloudy days are common in winter, while spring and autumn offer more clear skies.
The warmest month, with the highest average maximum temperature, is August (30 °C). The month with the lowest average maximum temperature is January (2.9 °C). Overall, the average maximum temperature over the whole year is 16.5 °C.
The month with the highest average minimum temperature is August (20 °C). The coldest month, with the lowest average minimum temperature, is February (-3.9 °C). Overall, the average minimum temperature over the whole year is 7.2 °C.
The wettest month, with the highest amount of precipitation, is August (148.2 mm). The driest month, with the least amount of precipitation, is March (66.4 mm). Over the whole year there are 1,125.1 mm of rainfall on average.
The month with the most days of rain is January (29.1 days). The month with the fewest days of rain is May (17 days). Over the whole year there are 260.5 days of rain on average.
The month with the most snowfall is January (1,653.2 mm). The months with the least snowfall are May, June, July, August, September and October (0 mm). Over the whole year there are 4,925 mm of snowfall on average.
The month with the longest days, so the most daylight, is June (Average daylight: 14.1 h). The month with the shortest days, so the least daylight, is December (Average daylight: 9.1 h). Over the whole year there are 11.8 h of daylight per day on average.
The month with the most sunshine per day is May (Average sunshine: 7.1 h). The month with the least sunshine per day is December (Average sunshine: 3.1 h). Over the whole year there are 4.7 h of sunlight per day on average.
The month with the highest average UV index is July (UV index: 10). The months with the lowest average UV index are January and December (UV index: 2). Over the whole year the average UV index is 5.7.
