Weather in Forssa

Stay informed about current weather conditions in Forssa for comfortable trip planning. Below you will find the latest data, detailed forecasts, and visual charts of weather changes.

The climate in Forssa can be characterized as temperate continental, with a clear division into four seasons. The weather here is typical for the southern part of Finland: winters are quite snowy and frosty, while summer is moderately warm, without exhausting heat. This makes the city an attractive destination for those who appreciate a calm atmosphere and fresh air.

The warmest period falls during the summer months, when the daytime temperature often rises to a comfortable +20°C, which is ideal for walks and active outdoor recreation. In winter, the thermometer consistently drops below zero, reaching an average of -4...-7°C, turning the city into a picturesque snowy location.

A characteristic feature of the local climate is the fairly even distribution of precipitation throughout the year. Although the total amount is not large, "wet" days occur regularly — from 9 to 16 days a month. Therefore, when planning a trip in any season, tourists should pack waterproof clothing and footwear.

The climate in Forssa is characterized by clearly defined seasons, typical for the southern part of Finland. The coldest months of the year are January and February, when the average temperature hovers around -4.4°C, and night frosts can reach -7°C. Winter here is moderately frosty and long: freezing temperatures persist from December to March. Travellers planning a trip at this time should ensure they have warm clothing to feel comfortable in the fresh air.

Summer in the city can be described as mild and pleasant, without sweltering heat, making it the ideal time for excursions. The warmest month is July, when the air warms up during the day to an average of 21.1°C. June and August also delight with comfortable weather with daytime highs around 20°C. This is the period when nature blooms, and weather conditions are most favourable for long walks and outdoor activities.

It is important to consider noticeable temperature differences between day and night, especially during the summer period. For example, in June and July, the difference can be about 10 degrees: after a warm day (20–21°C), a rather fresh night (10–12°C) follows. Transitional seasons, such as May and September, offer cool but comfortable weather with daytime temperatures around 15°C; however, by November the thermometer tends towards zero, foreshadowing the imminent arrival of winter.

Precipitation in Forssa is distributed fairly evenly throughout the year, however, its character depends heavily on the season. In winter, when the average temperature drops below zero (in January and February around -4.4°C), the city is covered in snow. January is considered the most precipitation-heavy month: snow can fall for 16 days, creating a stable snow cover and a true winter atmosphere.

Spring marks the transition to a drier period. April is statistically the driest month of the year, when the number of days with precipitation drops to nine. At this time, the snow melts, and the probability of getting caught in prolonged rain or snowfall is minimal compared to the winter months, making mid-spring convenient for planning trips.

In summer and early autumn, rain becomes a more frequent occurrence. The peak of summer precipitation falls in July and August, when the highest volume of moisture and about 14–15 rainy days per month are recorded. In autumn, especially in October, overcast and damp weather persists, so tourists are recommended to carry an umbrella or a waterproof windbreaker at any time of the year, except, perhaps, the very middle of spring.

When preparing for a trip to Forssa, it is important to remember the variability of the Finnish climate, so the best decision when choosing a wardrobe will be the principle of layering. In winter and early spring, when the temperature often stays below zero, you will need quality thermal underwear, warm woollen sweaters, and a reliable winter jacket or down coat. Do not forget a hat, scarf, and gloves, as well as insulated waterproof footwear with non-slip soles, which will ensure comfort and safety on snowy streets.

Summer in this region is usually mild and comfortable, with daytime temperatures reaching an average of +20°C. For this time of year, t-shirts, light trousers, and comfortable trainers for long walks are suitable. However, even in July and August, evenings can be cool, so be sure to pack a fleece jacket, cardigan, or light windbreaker in your suitcase so as not to get cold after sunset.

Precipitation in Forssa falls quite regularly throughout the year, so a compact umbrella or a quality raincoat will become your faithful companions in any season. In spring and summer, it is also recommended to bring sunglasses and sunscreen, as the sun can be quite active. The main rule is to choose comfortable and practical clothing that will allow you to enjoy your journey in any weather.