Sumoto

Stay up to date with the latest weather conditions in Sumoto. Below you will find current data, forecasts, and helpful weather information.

The climate in Sumoto can be described as temperate, with four distinct seasons. The city offers travelers a variety of weather conditions throughout the year, from cool winters to warm and humid summers. Spring and autumn are pleasant transitional seasons, each with its own unique atmosphere.

Winters in Sumoto (December–February) are fairly mild, with average temperatures around 7–9.5°C. Despite the low total precipitation (about 2 mm per month), there can be around ten cloudy or rainy days, creating a damp rather than dry feel. Summers (June–August) are warm and occasionally hot, with average temperatures reaching 27.3°C in August. The summer months, especially July, as well as September, see the highest number of rainy days (up to 14 days per month), indicating high humidity and the likelihood of frequent, though not necessarily heavy, rain (maximum monthly precipitation is 7 mm).

Spring (March–May) brings gradual warming: the average temperature rises from 10°C in March to a comfortable 17.7°C in May. Autumn (September–November) starts with a warm 25°C in September and gently transitions to a cooler 15°C by November. A characteristic feature of Sumoto's weather is the relatively low monthly rainfall year-round, yet the number of "wet days" remains quite stable, ranging from 9 to 14 days per month. This means light precipitation is possible quite often, even if the total volume is small.

Sumoto experiences a noticeable change of seasons with distinct temperature fluctuations throughout the year. The coldest months are January and February, when the average temperature stays around 7.2°C. During these months, nighttime lows are approximately 5.3–5.5°C, and daytime highs rarely exceed 9.0–9.1°C. The hottest period is August, with an average temperature of 27.3°C. In August, daytime heat can reach 28.5°C, while nights remain very warm at around 26.2°C. July also features high temperatures, with an average of 25.7°C, nearing August's levels.

Summer months in Sumoto, especially July and August, are characterized as hot. The average temperature in June is about 21.5°C, gradually rising to peak values in August. A feature of the summer period is the relatively small difference between day and night temperatures. For example, in August, the difference between the maximum (28.5°C) and minimum (26.2°C) temperature is just over 2 degrees. A similar pattern is seen in July (26.7°C max and 24.7°C min). This may indicate high air humidity, typical of the Japanese summer, which helps retain heat at night.

Winter in Sumoto is generally mild and cool, without severe frosts. In December, the average temperature is about 9.5°C, dropping to 7.2°C in January and February. Nighttime temperatures in the coldest months usually do not fall below 5.3°C, and during the day, the air warms up to an average of 9–11°C. The difference between day and night temperatures in winter is also small, usually within 3–4°C (for example, in January from 5.5°C to 9.0°C). This indicates an absence of sharp temperature swings and fairly stable weather. Spring and autumn months offer pleasant, moderate temperatures, creating comfortable conditions for visiting the city.

Precipitation in Sumoto occurs throughout the year, but its intensity and frequency vary slightly. There is no pronounced monsoon season with heavy downpours; rather, there are periods with more frequent but mostly light precipitation. The average monthly rainfall remains low year-round.

The highest amount of precipitation, about 7 mm, usually falls in June, July, and October. July and September also stand out as the months with the highest number of rainy days—averaging 14 days. The "driest" months in terms of precipitation volume are January, February, November, and December, with only about 2 mm falling. Meanwhile, the lowest number of rainy days (around 9) is observed in April and November.

Thus, rain in Sumoto is a regular occurrence, happening roughly 9 to 14 days per month. Given the small total number of millimeters, this is most often light rain or drizzle. Winter temperatures are usually above freezing, so snowfall is uncommon for the city.

When planning a trip to Sumoto, it is important to account for the changeable weather and frequent precipitation throughout the year. Regardless of the season, comfortable waterproof walking shoes will be your best friend, as the number of rainy days is quite high every month. Always carry a compact umbrella or a light raincoat. Layering is the key to comfort, as it allows you to easily adapt to temperature changes during the day, especially during the transitional seasons.

In summer, from June to August, as well as in warm September, Sumoto experiences warm and humid weather with average temperatures ranging from 21.5°C to 27.3°C. During this period, rainfall and wet days reach their peak, so light, breathable clothing made of natural fabrics, along with reliable rain protection (an umbrella or raincoat), will be essential. Don't forget sunscreen and a hat for clear days. In May and October, the weather is also quite warm, so summer advice applies, but it's worth adding a light sweater or cardigan for evening walks.

The winter months, from December to February, are characterized by cool weather with average temperatures around 7–9°C. Although there are no severe frosts, you will need warm clothes: sweaters, fleeces, a mid-season jacket (preferably windproof and water-repellent, given the 10 wet days per month), as well as a hat and gloves. In spring (March–April) and late autumn (November), temperatures gradually rise or fall respectively, ranging from 10°C to 15°C. Layered clothing is ideal for these periods: T-shirts, long-sleeves, light sweaters, and a jacket that can be taken off or put on depending on the weather. Given the low total rainfall but the presence of wet days, a light waterproof jacket or umbrella will still come in handy.