The climate of Seinäjoki
Seinäjoki, a city in
Finland, follows the Köppen climate classification Dfc, indicating a predominant Subarctic climate with severe winters, no dry season, and cool summers. This geographical location significantly influences the city's climate, with wide-ranging fluctuations observable across various weather parameters throughout the year.
The city experiences a high variation in temperature, oscillating from a lowest average temperature of -8.8°C (16.2°F) in
January to a highest average of 21.4°C (70.5°F) in
July. A substantial change is also noted in the relative humidity, starting from 67% in
May shifting upwards to 94% in the colder months of January and
February. Rainfall displays a diverse pattern with the maximum precipitation of 62mm (2.44") occurring in
August, though the number of rainfall days peaks in the same month at 18.1 days.
Paralleling the rainfall, snowfall in Seinäjoki follows a similar distribution, with no snowfall from
June to
September, gradually increases towards the end of the year, reaching a yearly high of 145mm (5.71") in
December. The aforementioned data provides a clear picture of distinctive weather patterns within the city influenced by its Subarctic climatic conditions.
The best time to visit Seinäjoki
Based on the weather parameters outlined, the most favorable time to visit
Seinäjoki would seemingly be between
May and
August. During this period, the city experiences relatively warm temperatures ranging from 14.5°C (58.1°F) to 21.4°C (70.5°F), lower relative humidity levels around 67% to 72%, and longer daylight hours up to 20 hours in
June.
Although rainfall during these months does increase, it's accompanied by a higher number of sunshine hours, which peaks at 12 hours in June, and a decrease in cloud cover percentage, dropping to 43% in June, indicative of clearer skies. This time frame also avoids the heavy snowfall and extreme cold characteristic of the winter months.
The worst time to visit Seinäjoki
The least favorable time for tourists to visit
Seinäjoki spans from
November to
February. During this period, temperature averages drop significantly, plummeting to as low as -8.8°C (16.2°F) in
January. These months also see a remarkable increase in snowfall with
December witnessing a high of 145mm (5.71") of snow.
The relative humidity during these months ascends to around 91%-94%, and the average daylight spans a mere 6.1 hours in December. In addition to these factors, the pressure deviation is most significant in December, dropping to 1006mb, coupled with an average wind speed peaking at 12.1km/h (7.5mph) in December, emphasizing the intense weather conditions during this timeframe.
Spring weather in Seinäjoki
During the Spring months from
March to
May,
Seinäjoki undergoes a gradual transition from its frigid winter conditions. The temperatures experience a notable increase moving from -0.1°C (31.8°F) in March to 14.5°C (58.1°F) in May. Precipitation during this period ranges from 23mm (0.91") in March to a high of 41mm (1.61") in May, with the number of rainfall days ascending from 5.3 days to 14.2 days, respectively.
Simultaneously, a substantial decrease in snowfall from 115mm (4.53") in March to no snowfall from May forwards is observed. The longer daylight hours ranging from 11.8 hours in March to 18 hours in May and increasing visibility from 6km (3.7mi) in March to 9km (5.6mi) in May, signifies the onset of the mild and comfortable weather.
Summer weather in Seinäjoki
Seinäjoki witnesses its warmest conditions during the Summer months of
June to
August, with an average high temperature of around 19.6°C (67.3°F) to 21.4°C (70.5°F). The level of humidity remains relatively stable around 67% to 72%, and the amount of rainfall becomes prominent with a peak at 62mm (2.44") in August.
A noteworthy aspect of Seinäjoki's Summer is the long daylight hours, peaking at 20 hours in June declining to 16.1 hours in August. Simultaneously, there are high sunshine hours going from 12 hours in June to 9.5 hours in August, and a UV index reaching its annual high at 5 in
July. The absence of snowfall reflects the season's mildness, making it a favorable time for outdoor activities.
Autumn weather in Seinäjoki
The Autumn months from
September to
November in
Seinäjoki are marked by falling temperatures, from 14.5°C (58.1°F) in September and dipping to 2°C (35.6°F) in November. Accompanying this, the amount of rainfall sees a diminishing pattern from 33mm (1.3") to 37mm (1.46"), with a slight decrease in rainfall days from 15 to 13.
Concurrently, snowfall begins to make its appearance with 27mm (1.06") recorded in
October, escalating to 73mm (2.87") in November. Despite this initial snowfall, daylight hours, which drop from 13 hours in September to 6.9 hours in November, and the reduced sunshine hours from 6.9 hours to 2.5 hours, continue to provide fair visibility.
Winter weather in Seinäjoki
Winter in
Seinäjoki, occurring from
December to
February, is distinguished by its extremely low temperatures, ranging from -2°C (28.4°F) to -4.5°C (23.9°F). At the same time, the relative humidity climbs strikingly from 92% to 94%. It's during this period that snowfall is at its peak, reaching up to 145mm (5.71") in December, concomitant with an average of 16.3 snowfall days.
Additionally, daylight reduces to its annual minimum of 5 hours in December, hindering visibility. Coupled with heightened wind speeds reaching up to 12.1km/h (7.5mph) in December. This season characterizes the severity of a Subarctic winter, typifying the rugged beauty of Seinäjoki during the harshest months.
Weather in January
Seinäjoki,
Finland endures a chilly start to the calendar year in
January. The plummeting mercury paints a picture of winter, repainting landscapes with crystallized snow. Wintry woes continue to prevail as snowfall of 139mm (5.47") engulfs the city.
Weather in January » Weather in February
February in
Seinäjoki continues the cold trend set in
January. Grey skies envelop the city contributed by a cloud cover of 74%. However, there's a noticeable reduction in snowfall, inviting a slightly warmer atmosphere. Natural daylight starts to breach through the persistent overcast, increasing the sunlight hours, paving the way for spring.
Weather in February » Weather in March
March in
Seinäjoki marks the advent of spring amidst lingering traces of winter. Erratic weather patterns dominate, induced by a declining snowfall count and a temperature that hovers around sub-zero degrees. A marginal increase in sunshine hours becomes noticeable, aspiring to warm the frozen landscapes.
Weather in March »
Weather in April
April brings with it the warmthes of spring in
Seinäjoki,
Finland. A remarkable respite from the intense cold is evident as the mercury levels rise, offering a pleasant contrast to the preceding months. Daylight hours shoot up significantly, making the days brighter and longer.
Weather in April » Weather in May
May unveils the Finnish summer in
Seinäjoki, characterized by pleasantly high temperatures and prolonged sunshine. Rainfall gets frequent with an average monthly downpour of 41mm (1.61"). As the days unfold, boisterous winds make their way out, resulting in warm, tranquil evenings.
Weather in May » Weather in June
June in
Seinäjoki can be called the threshold to peak summer. This period offers the longest daylight hours of up to 20 hours paving the way for leisurely afternoons. The city also revels under a maximum number of sunshine hours keeping the weather sunny and bright.
Weather in June »
Weather in July
July in
Seinäjoki manifests classic summer temperatures with an average high of 21.4°C (70.5°F). The city witnesses a spike in rainfall during this month, a pattern typical of summer. Barring the periodic rain showers, the humidity levels drop, making the air cooler and refreshing.
Weather in July » Weather in August
August in
Seinäjoki indicates the onset of a post-summer phase. The city experiences a significant downpour with an average of 62mm (2.44") rainfall, the highest at any time of the year. Despite high rainfall days, the temperature holds firm, presenting a contrast to the damp conditions.
Weather in August » Weather in September
September in
Seinäjoki marks the transition of seasons, bringing early signs of autumn. Milder temperatures become prominent, announcing the departure of summer. Sunlight hours gradually reduce, bringing in early evenings. A decrease in pressure can be observed, a precursor to the approaching colder months.
Weather in September »
Weather in October
October sets in with autumnal hues in
Seinäjoki. A noticeable drop in temperature signals the arrival of colder days. Snowfall makes a comeback after a prolonged summer hiatus, albeit in a mild amount of 27mm (1.06"). The prevalence of clouds begins to increase, diminishing the sunlight hours.
Weather in October » Weather in November
November in
Seinäjoki is a prelude to the Finnish winter. A substantial fall in temperature is accompanied by an average snowfall of 73mm (2.87"). Shorter, colder days start setting in, contrasting with the sun-soaked summer afternoons.
Weather in November » Weather in December
December in
Seinäjoki marks the beginning of a long, severe winter. The climate takes a polar plunge as the temperature dips considerably, inundating the city with an average snowfall of 145mm (5.71"), a high not seen in any other month.
Weather in December »