Tonami

Planning a trip or just curious about the weather in Tonami? Here you will find the latest information on weather conditions, as well as forecasts and useful charts.

The climate in Tonami can be described as temperate, with four distinct seasons. The city experiences noticeable temperature fluctuations throughout the year, offering travelers a variety of weather conditions depending on the time of their visit. Overall, the weather here is characterized by a significant number of days with precipitation throughout the year.

Winter in Tonami, spanning from December to February, is quite cold: average temperatures range from 1.8°C in January to 4.3°C in December, with nightly frosts. This is also the wettest period in terms of the number of days with precipitation—up to 25 days in December and January. Summer, from June to August, by contrast, is warm and humid. Average temperatures reach 25-27°C, especially in July and August, which are the hottest months. The summer months are also characterized by frequent rain, with 17-22 rainy days.

Spring (March-May) and autumn (September-November) are pleasant transitional seasons. In spring, the temperature gradually rises from 7°C in March to 17°C in May, while the number of days with precipitation decreases. In autumn, the weather becomes cooler, dropping from 22.7°C in September to 10.5°C in November, while maintaining a moderate amount of precipitation. Travelers should be prepared for frequent, though not always heavy, precipitation at any time of year.

In Tonami, there is a pronounced change in temperature regimes throughout the year, typical of a temperate climate. The hottest month is August, when the average air temperature is 26.7°C, and daytime maximums regularly reach 30.1°C. In contrast, January is considered the coldest month: the average temperature at this time drops to 1.8°C, and nighttime minimums can reach -1.3°C. This annual temperature range indicates clearly defined seasons, each offering its own features for visitors.

The summer months in Tonami, especially July and August, are characterized by warm and sometimes hot weather. Average maximum temperatures during this period range from 28.6°C to 30.1°C, while minimum nighttime temperatures rarely drop below 22°C, creating comfortable conditions for evening walks. Winter, covering December, January, and February, brings cool weather. Average daytime temperatures stay in the range of 5.0°C to 7.5°C, and nights can be frosty, especially in January when the average minimum is -1.3°C. February is slightly warmer, with an average minimum of -0.4°C.

The transitional seasons—spring and autumn—offer more moderate temperatures. In spring, from March to May, there is a gradual warming: from an average of 7.1°C in March to a comfortable 17.1°C in May. In autumn, from September to November, the temperature gradually decreases: from a warm 22.7°C in September to a cool 10.5°C in November. Daily temperature fluctuations in Tonami are noticeable but not extreme: the difference between daytime maximums and nighttime minimums is usually between 6°C and 9°C depending on the month, which should be considered when planning outdoor activities.

In Tonami, precipitation falls throughout the year, and there is no pronounced dry season. However, the amount and nature of precipitation change noticeably depending on the time of year. The highest number of days with precipitation occurs in the winter months and the middle of summer.

The winter period, especially December (about 25 wet days) and January (about 24 wet days), is characterized by frequent but not very heavy precipitation. In January, with an average temperature of 1.8°C and minimum values below freezing, there is a high probability of snowfall. In December (about 25 wet days) and February (17 wet days), precipitation may also fall as snow or sleet. The total amount of precipitation in these months ranges from 5 to 7 mm.

Summer months, especially July, bring the largest amount of precipitation by volume—about 10 mm—while rainy days are also numerous (approximately 22 days). In August, about 8 mm of precipitation falls over approximately 20 days. June and September are also quite wet, with 7 mm of precipitation and 17-18 rainy days, respectively. Summer precipitation usually falls as rain.

Spring and autumn months can be considered relatively drier. The lowest number of rainy days is observed in April and May (13 days each), when 6 mm and 5 mm of precipitation fall, respectively. March, October, and November also show moderate amounts of precipitation (5-6 mm) and between 15 and 16 wet days, making these periods more comfortable for walking with a lower chance of being caught in the rain.

When planning a trip to Tonami, it is important to consider the changeable weather and the significant amount of precipitation throughout the year. Regardless of the season, indispensable companions will be comfortable waterproof shoes for long walks and a reliable umbrella or raincoat, as the number of rainy days is quite high, especially in the winter months (December-January) and in July. In winter, from December to February, expect cold weather with average temperatures around 1.8-4.3°C, and nighttime temperatures can drop below freezing. Therefore, be sure to take warm, layered clothing: thermal underwear, fleece jackets, sweaters, a winter jacket (preferably windproof and waterproof), a hat, gloves, and a scarf.

Spring (March-May) and autumn (September-November) in Tonami are characterized by milder but still changeable weather. Temperatures gradually rise in spring (from 7°C to 17°C) and decrease in autumn (from 22°C to 10°C). During these periods, layering is the ideal solution: light sweaters, T-shirts, jeans or thick trousers, as well as a mid-season jacket or trench coat to protect against wind and rain. Don't forget comfortable shoes, as the weather may be perfect for long explorations of the city and its surroundings.

The summer months, from June to August, in Tonami are warm and humid, with average temperatures ranging from 20.9°C to 26.7°C, and maximums can reach 30°C. Despite the warmth, summer is also a period with high precipitation and many rainy days, especially in July. It is recommended to bring light, breathable clothing made of natural fabrics, shorts, T-shirts, and sandals. However, don't forget a light jacket or windbreaker in case of rain or evening coolness. Sunscreen and a hat will also come in handy on clear days. In general, for Tonami, the best advice is to dress in layers to easily adapt to temperature changes and sudden precipitation at any time of year.