Last updated: January 18, 2025
South Ostrobothnia, Finland, exhibits a Dfc climate classification according to the Köppen-Geiger system, characterized by cool summers and cold winters. Temperatures in this region can be extreme; in January, the minimum can plummet to -30°C (-22°F), while in the height of summer, average highs reach around 32°C (91°F) in July. The annual average temperature hovers around 5°C (41°F), highlighting the pronounced seasonal variability that defines this northern landscape. This unique climatic pattern plays a vital role in shaping the region's ecology and agricultural practices.
In South Ostrobothnia, Finland, temperature patterns exhibit a striking seasonal variability, with harsh winters giving way to milder summers. January and February experience some of the coldest conditions, with minimum temperatures often plummeting below -28°C and average lows hovering around -5°C to -6°C. As spring approaches in March and April, temperatures begin to rise, with March seeing average highs reach 13°C and April breaking into the 20s during the day, signaling the transition to warmer weather. May introduces more considerable warmth, with temperatures peaking at 28°C, while June and July are characterized by warm to hot conditions, consistently reaching 32°C. The trend begins to reverse in August as temperatures start to cool, followed by the crisp transition of fall in September, which sees average temperatures decline to 10°C. By the time winter returns in October through December, the cycle completes, descending into frigid temperatures once again, reinforcing the region's extreme seasonal contrasts.
Ilmajoki, Seinaejoki, and Kauhajoki share similar temperature extremes, with winter lows hitting -28°C (-17°F to -19°F) in January for Ilmajoki and Seinaejoki, while Kauhajoki experiences this minimum in February. In the summer, all three towns see highs around 31°C (88°F to 89°F) in June. For detailed monthly temperatures, visit monthly temperatures in Ilmajoki, monthly temperatures in Seinaejoki, and monthly temperatures in Kauhajoki.
Precipitation patterns in South Ostrobothnia, Finland, exhibit a gradual increase from winter through summer, with the wettest months occurring in late summer and early fall. January starts with 39 mm (1.5 in) of precipitation, which slightly rises in February to 41 mm (1.6 in), culminating in 42 mm (1.7 in) by March. As the region transitions into spring, precipitation remains fairly consistent, peaking at 45 mm (1.8 in) during April and increasing to 57 mm (2.3 in) in May. June and July mark a further rise, with July receiving about 65 mm (2.6 in), reinforcing the notion that summer hosts a significant portion of the annual rainfall.
As the summer wanes, August experiences a notable spike in precipitation, with totals reaching 94 mm (3.7 in), signaling the arrival of the wetter fall season. Subsequently, September and October maintain elevated levels of rainfall at 73 mm (2.9 in) and 79 mm (3.1 in), respectively. The frequency of rainy days also aligns with this trend, peaking in August with 14 days of precipitation, while winter months see fewer rainy days, averaging around 8 to 12 days from January through March. This seasonal fluctuation in precipitation plays a crucial role in the region's ecosystem and agricultural dynamics.
In South Ostrobothnia, Finland, sunshine duration follows a striking seasonal pattern, characterized by a gradual increase from the dark days of winter to the bright months of summer. January offers a mere 41 hours of sunshine, providing a stark contrast to February's increase to 143 hours as daylight begins to return. This upward trend continues into spring, with March accumulating 263 hours, and April further enhancing daylight to 353 hours. By May, residents can enjoy an impressive 445 hours of sunshine, setting the stage for the sun-soaked days of summer.
The peak sunshine occurs in June, reaching 500 hours, followed closely by July with 478 hours—the two brightest months of the year. As summer transitions into fall, however, sunshine hours begin to decline steadily, with August dropping to 406 hours and September seeing a further reduction to 270 hours. The trend of decreasing sunlight is particularly pronounced as autumn progresses into October, November, and December, where sunshine durations plummet to 172 hours, 88 hours, and again to 41 hours, respectively. This seasonal cycle highlights the dramatic contrasts in daylight that South Ostrobothnia experiences, shaping both the climate and lifestyle of its inhabitants throughout the year.
In South Ostrobothnia, Finland, the UV Index exhibits distinct seasonal variations that influence sun exposure and skin protection recommendations throughout the year. During the winter months of January and February, the UV Index remains relatively low at 1, indicating minimal risk of harm from unprotected sun exposure, with a notable burn time of 45 minutes. As spring arrives, there is a shift; by March, the UV Index rises to 3, characterized as moderate, prompting a reduction in burn time to 30 minutes. April sees a further increase to 4, maintaining the moderate exposure category, while May reaches an index of 5, reflecting the steadily increasing intensity of sunlight.
The summer months bring the highest UV Index values, with June and July peaking at 6, which is classified as high risk, thereby reducing safe exposure time to just 25 minutes. Following this peak, August sees a slight decrease to 5, while September returns to the moderate category with an index of 3. As autumn sets in, the UV Index decreases again, with October falling to 2, and both November and December returning to a 1, resembling the conditions of early winter. This significant seasonal progression underscores the importance of adapting sun safety practices, especially during the sunnier months when UV exposure poses a greater risk to skin health.
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In South Ostrobothnia, Finland, daylight duration showcases a remarkable seasonal transformation, beginning with the deep winter months when January offers a mere 5 hours of sunlight. As February unfolds, daylight increases to 8 hours, marking the hopeful slow return of brightness. This upward trend continues through March, accumulating 11 hours, and significantly heightening in April to 14 hours. By May, residents can bask in nearly 18 hours of daylight, culminating in June, the sunniest month, which boasts nearly 19 hours of daylight—a time when the region flourishes under the extended sunlight.
As summer progresses into July, daylight remains plentiful at 18 hours, but begins to wane in August, dropping to 15 hours. September witnesses a further reduction to 12 hours, signaling the onset of autumn. This decline continues through October, where daylight dips to 9 hours, and further descends into winter with November offering only 6 hours and December providing a scant 4 hours. This profound fluctuation in daylight duration not only influences daily life and activities in South Ostrobothnia but also deeply impacts the region's flora, fauna, and cultural practices throughout the year.
The climate in AEhtaeri, Finland, is characterized by cold winters and mild summers. January and February experience the coldest temperatures, with averages around -6°C (21°F) and maximums reaching 7°C (44°F). As spring approaches, temperatures gradually rise, peaking in July with averages of 17°C (62°F) and maximums of 31°C (88°F). Precipitation is moderate throughout the year, with August recording the highest monthly rainfall of 92 mm (3.6 in). For more detailed information, visit AEhtaeri climate.
Alahaermae, Finland experiences a subarctic climate characterized by cold winters and mild summers. January and February feature minimum temperatures plummeting to -28°C (-18°F), while July sees warm averages around 17°C (63°F). Precipitation is moderate, peaking in August with 96 mm (3.8 in), and sunshine hours significantly increase from 39 hours in January to 502 hours in June. This unique climate supports a diverse range of seasonal activities and environments. For more details, visit Alahaermae climate.
Alajaervi, Finland, experiences a subarctic climate characterized by long, cold winters and short, warm summers. January temperatures can plunge as low as -29°C (-19°F), gradually rising to average highs of 17°C (62°F) in July. Precipitation varies throughout the year, peaking in August with 92 mm (3.6 in), while annual sunshine highlights a significant increase from 36 hours in January to 502 hours in June. This variation presents a diverse climate conducive to various seasonal activities. For more detailed information, visit Alajaervi climate.
Alavus, Finland experiences a diverse climate with cold winters and mild summers. Winter temperatures range from a chilling -30°C in January to around -15°C in April, while summer months see averages between 15°C and 17°C. Precipitation peaks in August at 83 mm, with the wettest months overall being June and September. Sunshine hours vary significantly, with June enjoying up to 487 hours, contrasting sharply with just 37 hours in January. For more details, visit Alavus climate.
Evijaervi, Finland experiences a continental climate with cold winters and mild summers. January temperatures can plunge to a minimum of -28°C (-18°F), while July reaches pleasant highs around 31°C (89°F). Precipitation peaks in August with 90 mm (3.5 in), and the region receives ample sunshine, especially in May with 438 hours. Visitors can expect a diverse climate throughout the year, ideal for enjoying both winter sports and summer activities. For more details, check the Evijaervi climate.
Ilmajoki, Finland experiences a diverse climate with distinct seasonal changes. Winter months, especially January and February, are notably cold, with average temperatures reaching around -4°C (25°F) and -5°C (23°F), while summers are mild to warm, peaking in July with averages of 17°C (63°F). Precipitation varies throughout the year, with a notable increase during the summer months, particularly in August, receiving about 90 mm (3.5 in). Sunshine hours are more abundant from late spring to summer, with June recording the highest at 503 hours. For more detailed information, visit Ilmajoki climate.
Isojoki, Finland experiences a diverse climate with cold, snowy winters and warm summers. Temperatures in January can drop as low as -26°C (-14°F), while July sees averages around 17°C (63°F) with maximums reaching up to 32°C (91°F). Precipitation varies throughout the year, peaking in August at 113 mm (4.5 in), and summer months tend to have the most sunshine, with June enjoying nearly 499 hours. The transition from stark winter to vibrant summer is accompanied by distinct shifts in both temperature and daylight. For more details, visit Isojoki climate.
Isokyroe, Finland experiences a diverse climate characterized by cold winters and mild summers. January and February are the coldest months, with temperatures often plunging below -20°C (-4°F), while July sees averages around 17°C (63°F) with maximums reaching 32°C (90°F). Precipitation peaks in August, accumulating around 98 mm (3.9 in), and sunshine hours are highest in June with 502 hours. This variation in temperature and rainfall contributes to a unique seasonal cycle in the region. For more details, visit Isokyroe climate.
Jalasjärvi, Finland experiences a continental climate characterized by cold winters and mild summers. January and February see extreme lows of around -28°C (-19°F), with average winter temperatures hovering around -4°C (24°F). In contrast, summer months such as July boast averages of 17°C (62°F) and highs up to 31°C (88°F). Precipitation is highest in August, reaching 92 mm (3.6 in), while sunshine hours peak in June with 496 hours. For more detailed climate information, visit Jalasjaervi climate.
The climate in Jurva, Finland, features distinct seasonal variations with cold winters and mild summers. January is particularly frigid, with average temperatures around -4°C (25°F) and lows reaching -27°C (-16°F), while July experiences milder conditions, averaging 17°C (63°F). Precipitation rises steadily from 37 mm (1.4 in) in January to a peak of 96 mm (3.8 in) in August, making late summer the wettest period. Sunshine hours are most abundant in late spring and summer, peaking at 504 hours in June. For more detailed information, visit Jurva climate.
Karijoki, Finland experiences a temperate climate with distinct seasons, marked by cold winters and mild summers. January and February are the coldest months, averaging around -5°C (24°F) and featuring significant snowfall. Summers, particularly from June to August, see average temperatures rise to about 15°C to 17°C (60°F to 63°F), with July being the warmest month. Precipitation is highest in late summer and early autumn, peaking in August at 107 mm (4.2 in), while sunshine hours vary significantly, with the longest days in June. For more details, visit Karijoki climate.
Kauhajoki, Finland experiences a starkly varied climate throughout the year, with winter temperatures plunging as low as -28°C in February and highs averaging around -4°C. As spring unfolds, temperatures gradually rise, peaking in July with averages of 17°C and maximums reaching up to 31°C. Precipitation levels are highest in August, totaling 100 mm, while sunshine hours peak in June with 497 hours. This combination of cold winters and mild summers, along with significant precipitation, characterizes the region's distinct weather patterns. For more detailed information, visit Kauhajoki climate.
Kauhava, Finland experiences a continental climate characterized by cold winters and mild summers. January and February see minimum temperatures as low as -29°C (-19°F) and average around -5°C (24°F), while July is the warmest month, with average temperatures reaching 17°C (63°F). Precipitation varies throughout the year, peaking in August at 87 mm (3.4 in), with overall higher amounts in summer. Sunshine hours are lowest in January at just 39 hours and peak in June with 502 hours. For more details, visit Kauhava climate.
Kortesjaervi, Finland experiences a diverse climate characterized by cold winters and mild summers. January and February see temperatures plummeting to lows of -28°C (-18°F) and averages around -6°C (22°F), while July peaks at an average of 17°C (63°F). Precipitation varies throughout the year, with the wettest months being August and October, receiving 88 mm (3.5 in) and 86 mm (3.4 in) respectively. Sunshine hours peak in June with 503 hours, contrasting significantly with January's mere 38 hours. For more detailed information, visit Kortesjaervi climate.
Kuortane, Finland experiences a cold and snowy climate, with harsh winters characterized by temperatures plunging to -29°C (-20°F) in January, while summer months can reach up to 32°C (89°F) in June. Precipitation is moderate throughout the year, peaking in August with 89 mm (3.5 in) and remaining substantially lower during the winter months. Sunshine is limited in winter, with only 36 hours in January, but increases significantly during the summer, peaking at 501 hours in June. For more detailed climate information, visit Kuortane climate.
Kurikka, Finland experiences a continental climate with cold winters and mild summers. January and February are the coldest months, featuring minimum temperatures dropping to -28°C (-17°F) and average highs around -5°C (23°F). Precipitation peaks in August with 97 mm (3.8 in), while the sunniest month is June, boasting 497 hours of sunshine. The significant temperature variations and seasonal changes make Kurikka's climate unique, influencing both outdoor activities and local agriculture. For more detailed information, visit Kurikka climate.
Lappajaervi, Finland experiences a temperate climate with significant seasonal variations. Winters are harsh, with January temperatures averaging around -5°C (23°F) and reaching lows of -27°C (-17°F). Summers are mild, peaking in July with average temperatures of 17°C (62°F) and highs of 31°C (88°F). Precipitation is abundant, especially in late summer, while sunshine hours peak in June, offering a bright and pleasant environment. For more details on the local climate, visit Lappajaervi climate.
Lapua, Finland experiences a continental climate with cold winters and mild summers. In January, temperatures can plunge to a minimum of -29°C (-19°F), gradually warming to an average of -5°C (24°F) by March. The warmest month is July, where average temperatures rise to 17°C (63°F), complemented by substantial rainfall peaking in August at 87 mm (3.4 in). Despite limited sunshine during winter months, Lapua enjoys long daylight hours in summer, with June offering up to 502 hours of sunlight. For more details, visit Lapua climate.
Seinäjoki, Finland, experiences a range of temperatures throughout the year, with January averaging -4°C and peaks in July around 17°C. The summer months from June to August are the warmest and sunniest, offering between 479 and 503 hours of sunshine, while winter months are characterized by lower temperatures, often dropping below -20°C. Precipitation is relatively consistent, with a peak of 90 mm in August and averages ranging from 37 mm in January to 75 mm in October. For more detailed climate information, visit Seinaejoki climate.
Soini, Finland experiences a temperate climate characterized by cold winters and mild summers. January sees frigid temperatures, with an average of -6°C (22°F) and minimal sunshine, accumulating only 34 hours. As the year progresses, temperatures rise, peaking in July with averages around 16°C (62°F) and 468 hours of sunshine, while precipitation gradually increases, especially in late summer. Notably, August is the wettest month, receiving 93 mm (3.7 in) of rain. For more detailed information, visit Soini climate.
Teuva, Finland experiences a cold temperate climate with distinct seasonal variations. Winters are frigid, with January and February offering temperatures as low as -26°C (-14°F) and averaging around -5°C (23°F). As summer approaches, temperatures can rise to a maximum of 31°C (89°F) in July, accompanied by peak precipitation in August, reaching 103 mm (4.1 in). The region enjoys ample sunshine during the summer months, particularly in June with 503 hours, while winter months see significantly less sunlight. For more details, visit Teuva climate.
Toeysae, Finland experiences a distinct climate characterized by cold winters and mild summers. January sees temperatures drop to a minimum of -29°C (-21°F), while July peaks at a comfortable 31°C (88°F). Precipitation varies throughout the year, with the wettest month being August, receiving 90 mm (3.5 in) of rain, and the driest months being January and February, each with 41 mm (1.6 in). Sunshine is most abundant in late spring and summer, peaking at 501 hours in June. For more detailed information, visit Toeysae climate.
Vimpeli, Finland experiences a diverse climate characterized by cold winters and mild summers. January and February are the coldest months, with average temperatures around -5°C (23°F) and significant snowfall, while July and August are the warmest, reaching averages of approximately 17°C (62°F). Notably, Vimpeli receives the highest precipitation in August, totaling 92 mm (3.6 in), with a gradual increase from spring to summer. The region enjoys ample sunshine during the summer months, peaking at 502 hours in June. For more detailed information, visit Vimpeli climate.
Ylihaermae, Finland experiences a diverse climate characterized by cold winters and mild summers. January temperatures can plummet to a minimum of -28°C (-18°F) while reaching a maximum of 8°C (46°F) in warmer months like June and July, where highs can hit 32°C (90°F). Precipitation is highest in late summer, peaking in August at 96 mm (3.8 in), while sunshine hours are most abundant in June with 502 hours. For more detailed climatic information, visit Ylihaermae climate.
In conclusion, the climatic characteristics of South Ostrobothnia, Finland, highlight the region's distinctive seasonal patterns, from temperature fluctuations and varying precipitation rates to significant changes in sunshine duration and UV Index. These elements collectively influence both the natural environment and the daily lives of the inhabitants. The long, sun-drenched summer days contrast sharply with the dark, cold winters, impacting agricultural practices, outdoor activities, and overall well-being. Understanding these climatic dynamics is essential for residents and policymakers alike, as it fosters better preparation for seasonal changes and encourages sustainable living practices that align with the rhythm of nature in this unique northern landscape.