Climate and monthly weather forecast
Merimasku, Finland

Merimasku, a quaint town in Finland, is primarily classified under the Dfb or Humid Continental climate category according to the Köppen Climate Classification System. This type of climate indicates no dry season, with warm summers that are complemented by cold, icy winters. The position of this town, on the southwestern coast of Finland, significantly influences the climate patterns experienced here.

One can expect significant changes in seasonal temperatures throughout the year. The sea temperature moderates from slightly chilly 0.8°C (33.4°F) in January, dropping further to -0.2°C (31.6°F) from February to March, before gradually rising to reach a peak of 12.4°C (54.3°F) in August. The daylight hours vary widely, ranging from a lowly 5.9 hours in December to a grand 18.9 hours in June. The fluctuation in both sea temperature and daylight hours signifies the region's transition between the chilling winter months and the sun-drenched summer.

Unique patterns can be identified in the climate of Merimasku. It is worth noting that the sea remains at a below freezing temperature for the first three months of the year, reaching the freezing point again in December. This period typically signifies an ice-covered sea, posing several marine challenges. On the contrary, the warmest sea temperatures coincide with the most extended daylight hours from June to August, indicating a pleasant summer period with ample sunshine.

The window to visit Merimasku when the weather is most welcoming falls during the summer period, from June to August. During this time, the sea temperature elevates from 8.7°C (47.7°F) to 12.4°C (54.3°F), making it an excellent time for water-based activities and beach leisure. The summer period is also graced with long daylight hours, peaking at 18.9 hours in June. The elongated sunlight exposure during these months provides the perfect opportunity to engage in outdoor pursuits or explore the local sights.

The winter months of January, February, and December are better to be avoided if planning a trip to Merimasku. The sea temperature plunges to below freezing, and daylight is limited to between 5.9 hours to 6.7 hours. These conditions can make travel challenging and limit outdoor activities, thereby significantly curbing the overall visitor experience.

Spring in Merimasku, covering the months of April and May, signals a gradual shift from the frozen winter towards the more temperate summer. The sea temperature increases from 0.6°C (33.1°F) in April to 3.8°C (38.8°F) in May. Meanwhile, daylight hours extend from 14.7 hours to 17.3 hours over the same period. The overall climate remains relatively cold, but the expanding daylight provides room for increased outdoor activity.

The summer period in Merimasku, extending from June to August, offers warm sea temperatures and long daylight hours. The stretch from June to August sees the sea temperature rise from 8.7°C (47.7°F) to a yearly peak of 12.4°C (54.3°F). Meanwhile, daylight hours reach their apex at 18.9 hours in June, slowly decreasing to 15.6 hours in August. This combination of warm sea temperatures and abundant daylight makes the summer period ideal for outdoors exploring and sea-side activities.

Autumn in Merimasku spans from September to November, characterized by reducing sea temperatures and shortened daylight hours. The sea temperature drops from 9.8°C (49.6°F) in September to 4.1°C (39.4°F) in November. Concurrently, daylight hours are reduced from 12.9 hours to 7.5 hours during the same period. This time signifies a transition from the warm summer to the colder winter season.

Winter in Merimasku, running from December to March, brings a cold climate paired with limited daylight hours. The sea temperature hovers between -0.2°C (31.6°F) to 0.8°C (33.4°F) and the sea surface usually freezes, creating a mesmerizing icy panorama. Daylight hours are at their annual lowest, with only 5.9 hours in December to 6.7 hours in January. Despite the cold, the winter scenery can be immensely captivating, adding a unique charm to this Finnish town.

January marks the threshold of the year in Merimasku, Finland, with winter exhibiting its full prowess. Severe cold engulfs the region, freezing lakes and rivers, with an average seawater temperature settling at a chilly 0.8°C (33.4°F). Weather in January »

February continues the kingdom of winter's reign in Merimasku. The seawater temperature dips slightly from January to -0.2°C (31.6°F), extending the life of ice sculptures crafted by nature. The daylight hours extend marginally from the previous month, yet the essence of the Nordic winter persists. Weather in February »

March brings a gradual end to the long, cold winters of Merimasku. The seawater temperature remains stagnant at -0.2°C (31.6°F), parallel to February, still preserving winter’s icy allure. However, daylight hours progressively increase, hinting at the onset of spring. Weather in March »

April ushers in a vivacious spring season in Merimasku. The average seawater temperature records a significant rise to 0.6°C (33.1°F), an initial step towards freedom from winter's icy grip. Shifting daylight hours underscore the changing season, providing ample opportunities for outdoor adventures. Weather in April »

May strengthens the momentum of the spring season in Merimasku. The dramatic amelioration in seawater temperature to 3.8°C (38.8°F), casts a decisive break away from the icy cold days of winter. Daylight hours increase and extend, enriching the city's vibrant and soothing landscapes. Weather in May »

June commences the summer season in Merimasku, signifying longer days filled with sunshine. The average seawater temperature escalates to a balmy 8.7°C (47.7°F), rendering the environment conducive for water-based recreational activities. Weather in June »

July showcases the heart of summer in Merimasku, characterized by extended daylight and improving seawater temperatures. The seawater heats up to an average of 11.9°C (53.4°F), nearly 10°C (50°F) higher than the January lows, facilitating a myriad of watersport opportunities. Weather in July »

August, despite being part of the summer season in Merimasku, subtly begins to indicate the impending transition to fall. The warmest seawater temperature of the year is documented at 12.4°C (54.3°F), giving way to pleasant swimming conditions, despite a very slight decrease from July. Weather in August »

September arrives in Merimasku with signs of autumn filling the air. The seawater temperature drops to 9.8°C (49.6°F), down from the summertime highs of August, directing towards the onset of the cooler months. Daylight hours decrease quite noticeably from the previous month, leaving fewer hours for sunbathing and outdoor activities. Weather in September »

October fully immerses Merimasku in the depths of autumn. Seawater temperature continues its descent and reaches 6.2°C (43.2°F), signaling the approach of winter. Receding daylight hours further enhance the indication of the impending winter. Weather in October »

November in Merimasku marks the transition from autumn towards the colder winter months. The seawater temperature descends to 4.1°C (39.4°F), compared to October's temperature, underlining the inevitable approach of winter. The decline in daylight hours continues its trend from October, with shorter days and even cooler nights predominating. Weather in November »

December announces the arrival of winter in Merimasku, Finland. The seawater temperature dips down to 1.8°C (35.2°F), returning to near-January levels and confirming the prevalence of cold conditions. Daylight hours shrink considerably from November, being briefest in the year, defining the typical Nordic winter. Weather in December »