Aizuwakamatsu

Stay up to date with the latest weather conditions in Aizuwakamatsu. Below you will find current data, forecasts, and helpful weather charts to ensure your stay here is as comfortable as possible.

The climate in Aizuwakamatsu, Japan, can be described as humid continental, with four distinct seasons. The city experiences significant temperature fluctuations throughout the year, allowing tourists to enjoy a variety of weather conditions depending on the timing of their visit.

Winters in Aizuwakamatsu (December to February) are quite cold, with average temperatures around 0°C and frequent precipitation, which likely falls as snow during this period given the high number of "wet days." Summers (June to August) are warm and humid, with average temperatures reaching 23-24°C, especially in July and August. July also stands out for having the highest amount of precipitation and "wet days" during the summer, which may indicate the rainy season or frequent summer showers.

Spring (March–May) and autumn (September–November) are transitional seasons with milder temperatures. Spring brings a gradual warming, while autumn sees a steady cooling. Precipitation during these periods is moderate, but "wet days" still occur quite regularly, which is typical for the region as a whole. Travelers should be prepared for changeable weather and frequent, though not always heavy, precipitation at any time of year.

The climate in Aizuwakamatsu features noticeable seasonal temperature changes throughout the year. The hottest month is typically August, with an average temperature of 24.1°C and highs that can reach 27.5°C. In contrast, January is the coldest month, with an average temperature of -1.6°C and lows dropping to -4.3°C. This annual temperature range offers a variety of weather conditions for visitors.

Summer months in Aizuwakamatsu, particularly July and August, are quite warm and occasionally hot. In July, the average temperature stays around 22.9°C (with a low of 19.6°C and a high of 26.2°C), while in August it rises to 24.1°C (low of 20.8°C, high of 27.5°C). June is slightly cooler, with an average temperature of 18.4°C. Given the significant number of precipitation days in the summer, the weather can feel warm and humid.

Winter in Aizuwakamatsu is cold, with temperatures often dropping below freezing. In December, the average temperature is 0.9°C, falling to -2.0°C at night. January and February are the frostiest months, with average temperatures of -1.6°C and -0.8°C respectively, and nightly lows around -4°C. Daytime highs during these months rarely rise above 1–2°C. The temperature fluctuation between day and night in winter is approximately 5–6°C. In spring, for example in April and May, the difference between day and night temperatures is more pronounced and can reach up to 9°C, when average daytime temperatures range from 14°C to 19°C.

In Aizuwakamatsu, precipitation occurs quite frequently throughout the year, though its intensity, based on monthly averages, is relatively low. The wettest month by total volume is July, with about 7 mm of rainfall. However, the winter months lead in terms of the frequency of precipitation days: January and December each count 25 days with precipitation. While there is no clearly defined dry season, April can be considered the least wet period, with an average of 4 mm of precipitation and 14 wet days.

The winter period in Aizuwakamatsu is characterized by frequent snowfall, especially from December to February, when average monthly temperatures drop below freezing. Snow falls very often in January and December (25 days each month), and about 19 days in February. Despite the high frequency, the amount of snow—measured in millimeters of water equivalent—is usually small, totaling 4–5 mm per month. This suggests frequent but generally light to moderate snowfalls.

In summer, precipitation falls primarily as rain. July is not only the warmest but also the "wettest" month in terms of rainfall volume (7 mm), which is spread over 22 rainy days. High humidity persists in August, with about 5 mm of precipitation and 20 rainy days. In spring and autumn, both the amount and frequency of precipitation decrease slightly. For example, May and October see 4 mm of precipitation each, with 15–16 wet days.

When planning a trip to Aizuwakamatsu, it is important to consider the significant seasonal variations in weather. In winter (December to February), it is quite cold here; average temperatures drop below freezing, and the number of days with precipitation (likely snow) reaches 25 per month. Therefore, you will need very warm clothing during this period: a winter jacket or down coat, hat, scarf, gloves, thermal underwear, and waterproof footwear. In spring (March to May) and autumn (September to November), the weather is milder but still cool, especially at the beginning and end of these seasons. Layering is recommended: sweaters, fleece tops, light jackets, as well as waterproof outerwear and an umbrella, as there are still many rainy days (14–17 per month).

Summer in Aizuwakamatsu (June to August) is warm, with average temperatures ranging from 18°C to 24°C. However, this is also the wettest period, especially in July, which sees up to 7 mm of precipitation and as many as 22 rainy days. Pack light, breathable clothing, but don't forget a raincoat or umbrella. Sunscreen and a hat will also come in handy on clear days. Regardless of the season, comfortable walking shoes are a must, as you will likely be doing a lot of sightseeing. The principle of layering will help you easily adapt to temperature changes throughout the day.