Weather in Komatsu

Find out what weather awaits you in Komatsu. This section provides current weather updates, forecasts, and useful charts to help plan your time.

The climate in Komatsu, Japan, is characterized as temperate 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 time of their visit.

Winters (December to February) in Komatsu are quite cool, with average temperatures around 3-5°C and a very high number of days with precipitation (up to 26 days in January and December), which can mean frequent rain or snow. Spring (March to May) brings gradual warming, replacing the winter chill with pleasant daytime temperatures ideal for walking, while the number of rainy days decreases. Summer (June to August) is warm and humid here, especially in July and August, when average temperatures reach 24-26°C; July also stands out with the highest amount of rainfall (10 mm) and a significant number of rainy days. Autumn (September to November) delights with mild and comfortable weather, featuring gradually decreasing temperatures and moderate precipitation.

One of the key features of the weather in Komatsu is the rather high number of precipitation days throughout the year, especially during the winter months and mid-summer. Although the absolute precipitation volumes in millimetres might not seem very large, frequent, perhaps light, precipitation is a characteristic phenomenon. Therefore, when planning a trip, it is worth being prepared for changeable weather and keeping an umbrella or raincoat with you, especially if you are travelling in January, July, or December.

The climate in Komatsu is characterized by noticeable seasonal temperature changes. Throughout the year, average temperatures fluctuate from cool winter values to warm, and sometimes hot, summers. The coldest month is usually January, when the average temperature is about 3.2°C, and minimum values can drop to 0.8°C. Conversely, August is the hottest month, with an average temperature of 26.1°C and maximum highs reaching 28.1°C.

The summer months in Komatsu, especially July and August, bring warm and hot weather. Average daytime temperatures in August hover around 28.1°C, while nights remain warm with minimum temperatures around 24.0°C. June is also warm, with average values around 20.2°C (maximum up to 22.6°C, minimum down to 17.7°C). The difference between day and night temperatures in summer is relatively small, constituting about 4-5°C, which may indicate periods of high humidity, especially considering the number of wet days in July and August.

Winter in Komatsu is cool, with temperatures often approaching the freezing point. In January, the coldest month, average maximum temperatures barely reach 5.6°C, while minimums drop on average to 0.8°C. December and February are also cold, with average temperatures of 5.6°C and 3.9°C respectively. Diurnal temperature fluctuations in winter are also small, usually within 4-5 degrees, suggesting consistently cool weather during this period. The spring and autumn months are characterized by a gradual transition in temperatures, offering more moderate and comfortable conditions.

In the city of Komatsu, precipitation is observed throughout the year, but its intensity and frequency change noticeably depending on the season. Winter months, especially January (7 mm of precipitation, 26 wet days) and December (8 mm of precipitation, 26 wet days), are characterized by a very high frequency of precipitation. Given the low average temperatures during this period (from 0.8°C to 5.6°C in January and from 3.3°C to 8.0°C in December), a significant part of it likely falls as snow or sleet. February also remains wet, with 18 days of precipitation and 6 mm.

The highest amount of precipitation falls in summer, peaking in July, when an average of 10 mm of precipitation and about 20 rainy days are recorded. August is also quite wet, with 8 mm of precipitation and 18 rainy days. This may indicate a distinct summer rainy season. Conversely, the spring months are the driest. March is the month with the lowest average rainfall (5 mm), although it counts 16 wet days. April and May stand out with the fewest number of days with precipitation – 13 days each, with a total rainfall of 6 mm.

The autumn months – September (7 mm, 17 wet days), October (6 mm, 14 wet days), and November (6 mm, 17 wet days) – represent a transitional period from summer humidity to the more frequent, but less voluminous, winter precipitation. Overall, while no month in Komatsu can be called absolutely dry, spring offers the highest number of days without precipitation compared to other seasons.

When planning a trip to Komatsu, it is important to consider the local climate features, characterized by a noticeable amount of precipitation throughout the year. Essential items in your luggage will be comfortable shoes for long walks and a reliable umbrella or a light waterproof jacket, as rainy days are not uncommon here. The principle of layering clothes will be especially relevant, allowing you to easily adapt to temperature changes that can fluctuate during the day, as well as when moving from indoors to outdoors.

In winter (December to February), Komatsu is quite cool, with average temperatures ranging from 3°C to 6°C, and precipitation occurs frequently. Therefore, be sure to bring a warm jacket (preferably waterproof), sweaters, a hat, gloves, and a scarf. In spring (March-May) and autumn (September-November), the weather becomes milder but is still changeable, with temperatures from 7°C to 23°C. For these seasons, a mid-season jacket, jumpers, and a light windbreaker will come in handy. In summer (June-August), Komatsu is warm, with average temperatures reaching 20-26°C. However, summer is also the period with the highest rainfall, especially in July. It is recommended to pack light, breathable clothing made from natural fabrics, sunscreen, and headwear, but do not forget protection against the rain.