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Contents
- The climate of Hämeenlinna
- The best time to visit Hämeenlinna
- The worst time to visit Hämeenlinna
- Spring weather in Hämeenlinna
- Summer weather in Hämeenlinna
- Autumn weather in Hämeenlinna
- Winter weather in Hämeenlinna
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
The climate of Hämeenlinna
Hämeenlinna, a vibrant city nestled in the heart of Finland, experiences a predominantly Dfb, or Humid Continental, climate. This meteorological classification signifies significant temperature variations throughout the year, with warm summers, cold winters, and no dry season.
The annual temperature swings between a low of -8.5°C (16.7°F) in January and a high of 21.8°C (71.2°F) in July. January and February remain the coldest months, while July and August offer generous warmth. One notable trait is the pronounced change in daylight hours from a mere 5.7 hours in December to a lengthy 19.1 hours in June, demonstrating the city's geographical position close to the Arctic Circle.
Rainfall is rather evenly distributed throughout the year, with monthly precipitations oscillating from 25mm (0.98") in March to a peak of 54mm (2.13") in July. However, the city doesn't go through a rain-free period. It's also worth emphasizing that in the winter months, the majority of the precipitation transforms into snowfall, peaking from December to February with around 150mm (5.91") monthly average.
The annual temperature swings between a low of -8.5°C (16.7°F) in January and a high of 21.8°C (71.2°F) in July. January and February remain the coldest months, while July and August offer generous warmth. One notable trait is the pronounced change in daylight hours from a mere 5.7 hours in December to a lengthy 19.1 hours in June, demonstrating the city's geographical position close to the Arctic Circle.
Rainfall is rather evenly distributed throughout the year, with monthly precipitations oscillating from 25mm (0.98") in March to a peak of 54mm (2.13") in July. However, the city doesn't go through a rain-free period. It's also worth emphasizing that in the winter months, the majority of the precipitation transforms into snowfall, peaking from December to February with around 150mm (5.91") monthly average.
The best time to visit Hämeenlinna
For travelers seeking comfortable temperatures and abundant sunshine, the best period to visit Hämeenlinna is from June to August. During this period, the temperature ranges from 19.3°C (66.7°F) to 21.8°C (71.2°F), and daylight extends to 18.3 to 19.1 hours per day. This allows ample daylight for sight-seeing and outdoor activities. During these months, the city also enjoys the maximum sunshine hours, with an average of 10.5 to 11.2 hours per day.
The worst time to visit Hämeenlinna
Visitors might find the winter months, between December and February, the most challenging time to visit Hämeenlinna. During this period, temperatures tumble down to -8.5°C (16.7°F) to -1.5°C (29.3°F). Complemented by substantial snowfall between 143mm (5.63") to 157mm (6.18"), these conditions may not be suitable for those who are not accustomed to cold climates. Moreover, the days are significantly shorter, with daylight ranging from 5.7 hours to 6.6 hours, limiting the time available for outdoor activities.
Spring weather in Hämeenlinna
Spring in Hämeenlinna runs from March to May and is characterized by steadily increasing temperatures. March starts off with a slight chill, with temperatures ranging from -5.4°C (22.3°F) to 0.4°C (32.7°F). However, by May, the temperature ranges from 5.8°C (42.4°F) to 15.7°C (60.3°F), signaling the arrival of warmer days. This season does bring more rain, with precipitation levels rising from 25mm (0.98") in March to 33mm (1.3") in May.
Summer weather in Hämeenlinna
Summer in Hämeenlinna, from June to August, comes with a welcome warmth and longer daylight hours. Temperatures range from 9.3°C (48.7°F) to 21.8°C (71.2°F) during this period, providing suitable conditions for outdoor exploration. It’s also the rainiest season, with monthly rainfall averages peaking at 54mm (2.13") in July. Nevertheless, the city also records maximum annual sunlight during these months, with up to 11.2 hours of sunshine per day.
Autumn weather in Hämeenlinna
Autumn descends on Hämeenlinna in September and continues until November. During this period, temperatures gradually decrease from 7.5°C (45.5°F) to 2.3°C (36.1°F). Rainfall remains relatively stable, with monthly averages fluctuating around 33mm (1.3") to 35mm (1.38"), while daylight hours decrease notably. September still enjoys about 12.9 hours of daylight, which reduces to 7.3 hours by November's end.
Winter weather in Hämeenlinna
Winter in Hämeenlinna, spanning from December to February, is characterized by freezing temperatures, significant snowfall, and short daylight hours. January is the coldest month, with temperatures falling between -8.5°C (16.7°F) to -4.4°C (24.1°F), accompanied by a hefty snowfall averaging 157mm (6.18"). Daylight hours dwindle down to a minimum of 5.7 hours per day in December, creating a unique winter Arctic atmosphere.
Weather in January
January in Hämeenlinna, Finland presents itself as the deepest period of the winter season, displaying a startling contrast to the mild, temperate climate of the incoming spring months. Characterised by frequent snowfall, low daylight hours, and consistent cloud cover, it exhibits a classic winter landscape. Weather in January »
Weather in February
February in Hämeenlinna manifests a weather pattern quite akin to January, upholding the cold, snowy scenario of the ongoing European winter. As compared to January, the temperature difference is marginal, thus preserving a justified continuity in the winter season. Weather in February »
Weather in March
In Hämeenlinna, the weather in March marks a notable shift from its strenuous winter months. Transitioning from freezing temperatures, the city starts to experience a gradual rise in the mercury levels. However, snowfall remains persistent at 138mm (5.43"), laying down a scenic carpet of white, challenging the emerging hints of spring. Weather in March »
Weather in April
April’s arrival in Hämeenlinna brings about a much-awaited change in the weather, steering the path toward the mildness of spring. Temperatures escalate considerably, peaking at an average high of 7.5°C (45.5°F), and the snow cover dramatically recedes to 61mm (2.4"), rendering a stark interseasonal variation. Weather in April »
Weather in May
May introduces Hämeenlinna to the heart of spring. The city experiences a noticeable rise in temperatures, sunlight, and a surge in atmospheric pressure. The rather mild landscape is then permeated with a youthful fragrance, characteristic to the spring season. Weather in May »
Weather in June
June rings in the start of summer in Hämeenlinna, with the pleasant warmth becoming the new weather paradigm. Marked by a steady temperature profile, it maintains an equilibrium between day and night temperatures. The landscape experiences its maximum daylight duration of 19.1 hours, promising long, illuminating days. Weather in June »
Weather in July
The peak of the summer season hits Hämeenlinna in July. The city basks under sunlight for about 18.3 hours, the highest annually, featuring the longest, warmest days and balmy nights. However, July doesn't shy away from asserting its stature as the wettest month, with the rainfall reaching its annual peak of 54mm (2.13"). Weather in July »
Weather in August
August in Hämeenlinna manifests as a prelude to the fall season, displaying signs of a receding summer. Despite the ushers of warmth continuing to prevail, temperatures experience a slight decrease from the preceding month. The rain show abates to 33mm (1.3"), signalling the onset of the dry season. Weather in August »
Weather in September
September marks the arrival of autumn in Hämeenlinna, with a significant dip in temperatures and a dwindling duration of daylight hours. The wildlife gears up for the approaching winter, and the city's greenery starts preparing for dormancy. Weather in September »
Weather in October
October continues the march of autumn in Hämeenlinna. Atmospheric pressure remains high, alongside the brisk winds, delineating the shifting scenario from lush greens to earthy tones and bare branches. Bucking the trend, the rainfall remains consistent at 33mm (1.3"), maintaining the air's freshness amidst the falling leaves. Weather in October »
Weather in November
November takes a dramatic turn in Hämeenlinna's weather narrative as it provides a stark transition from autumn to winter. The temperatures dip significantly and the city starts receiving its first potent doses of snowfall at 71mm (2.8"). Weather in November »
Weather in December
December ushers in the prime of winter in Hämeenlinna, with a huge jump in snowfall reaching 143mm (5.63"), the maximum annual measurement. The city plunges into the white glory of winter, with trees surrendering to the frosty cover. Weather in December »
Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Hämeenlinna?
In Hämeenlinna, January registers the lowest temperatures, averaging -4.4°C (24.1°F) at the peak and -8.5°C (16.7°F) at the lowest.
How many days does it rain in Hämeenlinna?
Throughout the year, there are 129.3 rainfall days, and 403mm (15.87") of precipitation is accumulated.
When does it snow in Hämeenlinna?
January through May, October through December are months with snowfall in Hämeenlinna.
What is the snowiest month in Hämeenlinna?
January is the month with the most snowfall in Hämeenlinna. Snow falls for 18.6 days and accumulates 157mm (6.18") of snow.
How many days does it snow in Hämeenlinna?
In Hämeenlinna, Finland, during the entire year, snow falls for 90.6 days and aggregates up to 766mm (30.16") of snow.
What are the months with the lowest UV index in Hämeenlinna?
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
What is the most humid month in Hämeenlinna?
The most humid month is February, with an average relative humidity of 95%.
What is the driest month in Hämeenlinna?
The months with the least rainfall are March and April Rain falls for 6.3 days and accumulates 25mm (0.98") of rain.
What is the least humid month in Hämeenlinna?
May is the least humid month, with an average relative humidity of 66%.
When it does not snow in Hämeenlinna?
In Hämeenlinna, snow does not fall in June through September.
When are the longest days in Hämeenlinna?
With an average of 19h and 6min of daylight, June has the longest days of the year.
What month has the most sunshine in Hämeenlinna?
The month with the most sunshine is June, with an average of 11.2h of sunshine.
What is the hottest time of year in Hämeenlinna?
July is the month when Hämeenlinna, Finland, experiences its warmest temperatures, averaging a high of 21.8°C (71.2°F) and a low of 12.1°C (53.8°F).
What is the wettest month in Hämeenlinna?
The month with the most rainfall in Hämeenlinna, Finland, is July, when the rain falls for 18.1 days and typically aggregates up to 54mm (2.13") of precipitation.
What is the month with the highest UV index in Hämeenlinna?
July is the month with the highest UV index in Hämeenlinna, with an average maximum UV index of 5.
When is Daylight Saving Time (DST) in Hämeenlinna?
On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends in Hämeenlinna, Finland, and the time zone changes from EEST to EET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 03:00, and the time zone reverts from EET to EEST.
What is the month with the shortest days in Hämeenlinna?
With an average of 5h and 42min of daylight, December has the shortest days of the year in Hämeenlinna, Finland.
What is the month with the least sunshine in Hämeenlinna?
The month with the least sunshine in Hämeenlinna is December, with an average of 1.4h of sunshine.
Average temperature
Hämeenlinna, Finland
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (-4.4°C).
The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is January (-8.5°C).
Average pressure
Hämeenlinna, Finland
- Average pressure in January:
1011.5mbar - Average pressure in February:
1012.2mbar - Average pressure in March:
1010.9mbar - Average pressure in April:
1013.3mbar - Average pressure in May:
1014.8mbar - Average pressure in June:
1012mbar
- Average pressure in July:
1011.1mbar - Average pressure in August:
1013.1mbar - Average pressure in September:
1013.1mbar - Average pressure in October:
1013.9mbar - Average pressure in November:
1011.7mbar - Average pressure in December:
1008mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed
Hämeenlinna, Finland
- Average wind speed in January:
11.3km/h - Average wind speed in February:
10.9km/h - Average wind speed in March:
11.3km/h - Average wind speed in April:
10.5km/h - Average wind speed in May:
10.5km/h - Average wind speed in June:
10.3km/h
- Average wind speed in July:
9.7km/h - Average wind speed in August:
9.6km/h - Average wind speed in September:
10.5km/h - Average wind speed in October:
10.9km/h - Average wind speed in November:
11.1km/h - Average wind speed in December:
12km/h
The windiest month (with the highest average wind speed) is December (12km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).
Average humidity
Hämeenlinna, Finland
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall
Hämeenlinna, Finland
The wettest month (with the highest rainfall) is July (54mm).
The driest months (with the least rainfall) are March and April (25mm).
Average rainfall days
Hämeenlinna, Finland
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
3.3 days - Average rainfall days in March:
6.3 days - Average rainfall days in April:
11.6 days - Average rainfall days in May:
13 days - Average rainfall days in June:
14.3 days
- Average rainfall days in July:
18.1 days - Average rainfall days in August:
14.3 days - Average rainfall days in September:
14.2 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
11.4 days - Average rainfall days in December:
7.1 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (3.3 days).
Average snowfall
Hämeenlinna, Finland
- Average snowfall in January:
157mm - Average snowfall in February:
154mm - Average snowfall in March:
138mm - Average snowfall in April:
61mm - Average snowfall in May:
18mm - Average snowfall in June:
0mm
The month with the highest snowfall is January (157mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Hämeenlinna, Finland
- Average snowfall days in January:
18.6 days - Average snowfall days in February:
18.2 days - Average snowfall days in March:
17.5 days - Average snowfall days in April:
6.6 days - Average snowfall days in May:
0.7 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.1 days - Average snowfall days in October:
3.3 days - Average snowfall days in November:
9.1 days - Average snowfall days in December:
16.5 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Hämeenlinna, Finland
- Average daylight in January:
6h and 4min - Average daylight in February:
9h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 4min - Average daylight in May:
17h and 3min - Average daylight in June:
19h and 1min
- Average daylight in July:
18h and 2min - Average daylight in August:
15h and 4min - Average daylight in September:
12h and 5min - Average daylight in October:
10h and 0min - Average daylight in November:
7h and 2min - Average daylight in December:
5h and 4min
The month with the longest days is June (Average daylight: 19h and 6min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in January:
1h and 4min - Average sunshine in February:
2h and 1min - Average sunshine in March:
3h and 2min - Average sunshine in April:
6h and 0min - Average sunshine in May:
9h and 1min - Average sunshine in June:
11h and 1min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
8h and 5min - Average sunshine in September:
6h and 2min - Average sunshine in October:
3h and 3min - Average sunshine in November:
2h and 2min - Average sunshine in December:
1h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).
Average sunshine days
Hämeenlinna, Finland
- Average sunshine days in January:
12.2 days - Average sunshine days in February:
9.7 days - Average sunshine days in March:
9.4 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
15.9 days - Average sunshine days in June:
13.8 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
14.1 days - Average sunshine days in September:
11.8 days - Average sunshine days in October:
14.7 days - Average sunshine days in November:
10.5 days - Average sunshine days in December:
10.5 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is March (9.4 days).
Average UV index
Hämeenlinna, Finland
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover
Hämeenlinna, Finland
The months with the most cloud cover are January and February (Cloud cover 80).
The months with the least cloud cover are May, June, July and August (Cloud cover 47).
Average visibility
Hämeenlinna, Finland
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
