Climate and monthly weather forecast
Vantaa, Finland

As stated by the Köppen climate classification, Vantaa, Finland enjoys a Dfb climate - a humid continental climate with no dry season and a warm summer. Geographically positioned in the Northern European region, Vantaa is dictated by weather patterns that provide significant variance in temperature, precipitation, and sunlight throughout the year.

A survey of the recorded climatological data reveals a drastic temperature shift between winter's chilling -8.1°C (17.4°F) to summer's pleasant 22.5°C (72.5°F). The change in rainfall is somewhat subtler but still noticeable, with a low of 32mm (1.26") in April to as high as 82mm (3.23") in October. Daylight hours also follow a significant annual variation - ranging from a short 5.9 hours in the dark winter days of December to a long 18.8 hours during June's extended summer daylight. Sunshine hours, the representative of actual sun exposure, vary between a meager 0.8 hours in December to a lavish 9.4 hours in July.

Unique to Vantaa is its concentration of rainfall in autumn compared to other seasons. October features the year's maximum rainfall at 82mm (3.23"), followed closely by November's 73mm (2.87"). Meanwhile, February is the coldest month, with average high and low temperatures of -2.7°C (27.1°F) and -8.9°C (16°F) respectively.

Based on the overall weather conditions and specific climatological parameters, a visit to Vantaa is most enjoyable from June to August. These months witness the warmest temperatures, varying from an average high of 19.6°C (67.3°F) in June up to 22.5°C (72.5°F) in July and remaining relatively high at 20.5°C (68.9°F) in August. In parallel, sunshine hours peak during these months, delivering between 8.9 hours to 9.4 hours of sunshine each day. Daylight hours are also notably extended during this time, offering between 15.6 hours to 18.8 hours of daylight to explore the city and its surroundings.

Winter spells harsh weather conditions in Vantaa, hence, December, January, and February mark less ideal times for a visit. The average high temperatures during these months hover between -2.4°C (27.7°F) to -0.7°C (30.7°F), and the lows plunge down from -6°C (21.2°F) to -8.9°C (16°F). These cold temperatures are accompanied by short daylight hours, from 5.9 hours in December to 9.1 hours in February. Additionally, sunshine hours remain quite limited, with a low of 0.8 hours in December gradually increasing to 2.6 hours in February.

Spring weather in Vantaa sees gradual improvement from the lingering winter chill. March is cold but temperatures slowly rise from a high of 1.5°C (34.7°F) to 15.8°C (60.4°F) by May. The season also offers increasing daylight hours, expanding from 11.8 hours in March to 17.3 hours by May. Rainfall remains consistent at approximately 40mm (1.57"), while sunshine hours significantly rise from a low of 4.2 hours in March up to 8.9 hours by May's end.

Summer graces Vantaa with the most pleasant weather conditions, with daily high temperatures ranging from 19.6°C (67.3°F) in June to 22.5°C (72.5°F) in July, thereafter gradually dropping to 20.5°C (68.9°F) in August. Contrastingly, rainfall increments throughout the summer, starting at 61mm (2.4") in June, increasing to 66mm (2.6") in July, and peaking at 79mm (3.11") in August. Despite the increasing rain, the sunshine hours maintain a maximum, ranging from 8.9 hours in June to 9.4 hours in July, before falling to 7.1 hours in August.

Autumn in Vantaa comes with the cooling of temperatures and increased precipitation. Starting with an average high of 14.8°C (58.6°F) in September, temperatures drop to 8.6°C (47.5°F) in October and further to 2.6°C (36.7°F) by November's end. Rainfall shows a similar trend, increasing across the autumn months with a high of 82mm (3.23") in October. By contrast, daylight and sunshine hours are reduced from a substantial 12.9 hours and 4.8 hours respectively in September, to a mere 7.5 hours and 1.2 hours by November.

Winter in Vantaa brings the harshness of frigid temperatures, scarce sunlight, and limited daylight. High temperatures hover just below freezing at -0.7°C (30.7°F) in December and -2.4°C (27.7°F) in January, rising slightly to -2.7°C (27.1°F) in February. The lows range from -6°C (21.2°F) in December to -8.1°C (17.4°F) in January and -8.9°C (16°F) in February. Daylight remains restricted from 5.9 hours in December to 9.1 hours in February, with sunshine hours even more limited, reaching a year-long low of 0.8 hours in December and only rising to 2.6 hours by February's end.

January, in Vantaa, Finland, is marked by a fair amount of rainfall, with an average of 54mm (2.13"). Despite the cold, the city receives a modest amount of sunlight with average daylight hours recorded at 6.8 hours. The chilly climate ensures the city is consistently blanketed in snow, creating a Winter wonderland feel. Weather in January »

As Vantaa transitions from late Winter into early Spring in February, the weather continues its cold trend. It is a period when the city's temperatures reach an all-time low with the coldest days experiencing an average low of -8.9°C (16°F). Weather in February »

The arrival of March in Vantaa signifies the beginning of exciting changes in the weather. There is a notable increase in daylight hours, with a recorded average of 11.8 hours. Additionally, March sees a much welcome temperature rise, albeit still below freezing. Weather in March »

April's weather in Vantaa is a relief after the freezing winter months experienced in the year's first quarter. Temperature averages rise from 1.5°C (34.7°F) to 8.7°C (47.7°F) bringing cheer and marking the official entry of Spring. Weather in April »

May in Vantaa offers a welcome respite from winter’s icy grip. It sees average high temperatures rising to a comfortable 15.8°C (60.4°F). The city undergoes a transformative period, moving away from the melting snow to budding flowers and green landscapes. Weather in May »

June marks the arrival of Summer in Vantaa, with significantly longer daylight hours recorded at a maximum of 18.8 hours. Substantial sunshine accompanies these long days, allowing for pleasurable strolls in parks and alongside rivers. Weather in June »

As the Summer surges forward, July in Vantaa witnesses peak warmth with average high temperatures hitting 22.5°C (72.5°F). With extended daylight hours, residents and visitors enjoy the joys of outdoor life, basking in the sunshine. Weather in July »

August in Vantaa continues the city's warm sojourn, although it records a slight dip in temperatures compared to July, experiencing a high average of 20.5°C (68.9°F). However, it continues to affirm its Summer status with plenty of daylight hours and abundant sunshine. Weather in August »

The transition from Summer to Autumn starts in September in Vantaa. The weather marks a significant decrease in temperatures, falling to the 14.8°C (58.6°F) average. This precipitous drop is more pronounced in the evenings, making them pleasingly cool. Weather in September »

October brings a considerable change in Vantaa's weather, with temperatures tipping towards the colder side. As daylight hours progressively decrease, nights get longer and cooler with a recorded average low of 2.7°C (36.9°F). Weather in October »

The arrival of November in Vantaa is likely to see the first signs of snow, indicating the early arrival of Winter. The changing weather results in a noticeable drop in average temperatures, hitting lows of -2.1°C (28.2°F). The green landscapes morphing into snow-covered vistas, providing stunning views and marking the onset of the holiday season. Weather in November »

December’s weather in Vantaa marks the full-blown arrival of Winter, with chilly winds, icy conditions, and snow-covered landscapes. The city endures the shortest daylight hours during this period, plunging it into a vast majority of darkness, averaging around 5.9 hours of light daily. Weather in December »