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Contents
- The climate of Lahti
- The best time to visit Lahti
- The worst time to visit Lahti
- Spring weather in Lahti
- Summer weather in Lahti
- Autumn weather in Lahti
- Winter weather in Lahti
- 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 Lahti
Situated in a northern latitude, Lahti, Finland, experiences a Humid Continental Climate, as indicated by the Köppen climatic classification of Dfb. This classification implies that the city does not undergo a dry season but experiences warm summers. The geographical location of Lahti contributes to the city's climatic conditions' unique traits, with the temperatures registering on both ends of the spectrum.
Throughout the year, Lahti experiences considerable fluctuations in temperature, ranging from a low of -8.9°C (16°F) during the colder months to a high of 22°C (71.6°F) during the warmer months. Relative humidity generally remains high, swinging between 67% and 95%. It is important to note that precipitation comes in two forms in Lahti - rain and snowfall. Rainfall ranges from 24mm (0.94") (lowest in April) to 46mm (1.81") (highest in July), while snowfall is mainly concentrated in the winter months, peaking at 196mm (7.72") in January and falling to negligible amounts from May to September.
The amount of daylight the city receives throughout the year alters significantly, varying from 5.7 hours in December to a maximum of 19.1 hours in June. Coupled with the daylight, the hours of sunshine also exhibit a notable shift, ranging from a low of 1.4 hours in December to a high of 11.6 hours in June. The UV index, on average, remains at a modest level, peaking at 5 in July.
Throughout the year, Lahti experiences considerable fluctuations in temperature, ranging from a low of -8.9°C (16°F) during the colder months to a high of 22°C (71.6°F) during the warmer months. Relative humidity generally remains high, swinging between 67% and 95%. It is important to note that precipitation comes in two forms in Lahti - rain and snowfall. Rainfall ranges from 24mm (0.94") (lowest in April) to 46mm (1.81") (highest in July), while snowfall is mainly concentrated in the winter months, peaking at 196mm (7.72") in January and falling to negligible amounts from May to September.
The amount of daylight the city receives throughout the year alters significantly, varying from 5.7 hours in December to a maximum of 19.1 hours in June. Coupled with the daylight, the hours of sunshine also exhibit a notable shift, ranging from a low of 1.4 hours in December to a high of 11.6 hours in June. The UV index, on average, remains at a modest level, peaking at 5 in July.
The best time to visit Lahti
Taking into account the weather parameters, the best time to visit Lahti would arguably be from June to August. During this period, the city experiences its warmest temperatures, with highs averaging between 18.9°C (66°F) and 22°C (71.6°F) and lows staying between 9.3°C (48.7°F) and 12.4°C (54.3°F). The days are long, with daylight hours ranging from 15.7 hours to 19.1 hours, and considerable sunshine, a high of 11.6 hours in June. Consequently, this period offers the most favorable conditions for outdoor activities and sightseeing.
The worst time to visit Lahti
The period between December and February might prove to be the least favorable for a visit due to severe weather conditions. The temperatures during this time hover between lows of -8.9°C (16°F) and highs of -1.4°C (29.5°F). Additionally, daylight is scarce, with the city getting only between 5.7 and 9.1 hours of light each day. The critical factor, however, could be the high snowfall, which peaks at 196mm (7.72") in January, making travel difficult.
Spring weather in Lahti
Spring, from March to May, witnesses a gradual increase in temperature. In March, the temperatures rise from lows of -5.7°C (21.7°F) to highs of 0°C (32°F), reaching between 5.9°C (42.6°F) and 15.5°C (59.9°F) by May. Along with the rise in temperature, the city also witnesses a rise in daylight hours from 11.8 hours in March to 17.5 hours in May. Though snowfall experienced in March dwindles down to 37mm (1.46") by May, rainfall shows an increasing trend, spiking at 36mm (1.42") in May.
Summer weather in Lahti
Following Spring, the summer season from June to August showcases a further increase in temperatures, peaking at 22°C (71.6°F) in July with lows of 12.4°C (54.3°F) making it pleasant and inviting. Daylight hours are at their highest, reaching up to 19.6 hours in June, accompanied by abundant sunshine hours. Although rainfall also peaks during this period, averaging 39mm (1.54"), it does not significantly affect the overall warm and generally sunny weather conditions.
Autumn weather in Lahti
Autumn, covering the months from September to November, marks the transition from warmer to colder months. The temperatures during this period gradually decrease from highs of 14.9°C (58.8°F) in September to 2.3°C (36.1°F) in November. Similarly, the daylight hours also reduce from 12.9 hours in September to 7.3 in November. Precipitation, represented by both rainfall and snowfall, shows a marked escalation, with rainfall peaking at 39mm (1.54") in October and snowfall increasing to 66mm (2.6") by November.
Winter weather in Lahti
The winter months of December to February introduce harsh weather conditions, characterized by significantly low temperatures ranging from -8.9°C (16°F) to -1.4°C (29.5°F). Daylight hours are at a minimum, averaging between 5.7 hours to 9.1 hours. The winter months also bring a high incidence of snowfall, with January witnessing the maximum of 196mm (7.72"). Despite the cold and snow, the winter months create a picturesque setting, transforming Lahti into a winter wonderland.
Weather in January
January in Lahti, Finland typically experiences a harsh winter held in a rigid grip of icy temperatures that induce abundant snowfall. This is signified with notable snowfall accumulation at 196mm (7.72") marking the highest for the year. Weather in January »
Weather in February
The short period of daylight marginally prolongs as the city transitions into February. Despite the slight temperature increment, February retains the harsh winter touch of its predecessor. The visible difference is observed in a minor decrease in snowfall, yet it is sizeable to make February the second highest in accumulative snowfall. Weather in February »
Weather in March
As March dawns, Lahti begins to subtly taunt the persistent frost as an expected transformation to a warmer season approaches. March is significant as it signifies a decrease in both the frequency and quantity of snowfall. Despite being a month commonly associated with an impending spring, the hints of winter are not easily dismissed. Weather in March »
Weather in April
April ushers the celebrated spring into Lahti as the grip of winter relaxes. It however doesn't mark the end of snowfall, the city receives a trifling 52mm (2.05") snowfall, distinguishing it as the last month with measurable snowfall. Weather in April »
Weather in May
May solidifies the prominence of spring, with multiplying daylight hours and multiplying sunshine hours. It witnesses a marked departure from April with the commencement of rainfall, replacing the winter-endowed snow. This changeover is evident as the city's landscape dons a lush green blanketed by wildflowers in plentiful. Weather in May »
Weather in June
As summer approaches, June in Lahti encapsulates the joy of longer days and ample sunshine. This is depicted by a peak in daylight hours reaching 19.1h, the highest for the year. The elevated temperatures significantly reduce the relative humidity, making June one of the driest months. Weather in June »
Weather in July
July in Lahti presents a full-blown summer with the city basking under the generous sunshine. Reaching its zenith, July is marked as the warmest month of the year, featuring temperatures lingering close to 22°C (71.6°F). The extended daylight results in vibrant social calendar brimming with events and festivities. Weather in July »
Weather in August
August carries forward the warmth from July, aligning it as a summer month, albeit with a slight dip in temperature. Though the temperature decline is marginal, it is considered a prelude to the impending autumn. Wrap your summer with brimming daylight hours and clear visibility, making it perfect for outdoor adventures. Weather in August »
Weather in September
In the transition from summer to autumn, September in Lahti experiences a notable downturn in temperatures. Though cooler than August, September still allows for pleasant weather conditions suitable for outdoor activities. This is the last month where the average maximum temperature ascends to two-digit figures. Weather in September »
Weather in October
As autumn takes a firm hold in October, Lahti experiences a further plunge in average temperatures. Depositing 39mm (1.54") of rain, October arrives as the wettest month of the year. While the chilly winds start to pick up, the autumn leaves begin to give way, gracing the paths with a beautiful carpet of russets and golds. Weather in October »
Weather in November
November in Lahti is blanketed under the grey skies of late autumn as the city observes the first flakes of snow. The drop in temperature is much steeper than the previous months, serving as the onset of winter. This contrasts with October, featuring the start of snowfall which typically extends to accumulating 66mm (2.6") snow. Weather in November »
Weather in December
December in Lahti is draped in winter white as the month records one of the highest amounts of snowfall, with 189mm (7.44") accumulated. Distinguished by its short daylight hours, the city compensates with delightful holiday festivities. 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 month in Lahti?
January is the coldest month of the year in Lahti, Finland, registering average temperatures as high as -4.5°C (23.9°F) and as low as -8.9°C (16°F).
How many days does it rain in Lahti?
Throughout the year, in Lahti, Finland, there are 118.7 rainfall days, and 398mm (15.67") of precipitation is accumulated.
When does it snow in Lahti?
Months with snowfall in Lahti are January through May, September through December.
What is the snowiest month in Lahti?
The month with the most snowfall in Lahti, Finland, is January, when snow falls for 18.9 days and typically aggregates up to 196mm (7.72") of snow.
How much does it snow in Lahti?
Throughout the year, in Lahti, Finland, there are 93.7 snowfall days, and 918mm (36.14") of snow is accumulated.
What is the month with the lowest UV index in Lahti?
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Lahti, Finland.
What is the most humid month in Lahti?
The most humid month in Lahti, Finland, is February, with an average relative humidity of 95%.
What is the driest month in Lahti?
The month with the least rainfall in Lahti is April, when the rain falls for 11.6 days and typically collects 24mm (0.94") of precipitation.
What is the least humid month in Lahti?
With an average relative humidity of 67%, May is the least humid month in Lahti, Finland.
When it does not snow in Lahti?
June through August are months without snowfall in Lahti, Finland.
When are the longest days in Lahti?
With an average of 19h and 6min of daylight, June has the longest days of the year in Lahti, Finland.
What month has the most sunshine in Lahti?
June has the most sunshine of the year, with an average of 11.6h of sunshine.
What month is the hottest in Lahti?
The month of July, characterized by an average high of 22°C (71.6°F) and a low of 12.4°C (54.3°F), is recognized as the warmest.
What is the rainiest month in Lahti?
The month with the most rainfall is July, when the rain falls for 14.3 days and typically aggregates up to 46mm (1.81") of precipitation.
What is the month with the highest UV index in Lahti?
July is the month with the highest UV index in Lahti, Finland, with an average maximum UV index of 5.
When is Daylight Saving Time (DST) in Lahti?
On Sunday, 27. October 2024, at 04:00, Daylight Saving Time ends in Lahti, 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 Lahti?
With an average of 5h and 42min of daylight, December has the shortest days of the year.
What is the month with the least sunshine in Lahti?
With an average of 1.4h of sunshine, December has the least sunshine of the year in Lahti, Finland.
Average temperature
Lahti, Finland
The warmest month (with the highest average high temperature) is July (22°C).
The month with the lowest average high temperature is January (-4.5°C).
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is January (-8.9°C).
Average pressure
Lahti, Finland
- Average pressure in January:
1011.7mbar - Average pressure in February:
1012.5mbar - Average pressure in March:
1011mbar - Average pressure in April:
1013.2mbar - Average pressure in May:
1014.8mbar - Average pressure in June:
1011.9mbar
- Average pressure in July:
1011.1mbar - Average pressure in August:
1013.2mbar - Average pressure in September:
1013.2mbar - Average pressure in October:
1014mbar - Average pressure in November:
1012.1mbar - Average pressure in December:
1008.4mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008.4mbar).
Average wind speed
Lahti, 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:
10.4km/h - Average wind speed in May:
10.5km/h - Average wind speed in June:
10.4km/h
- Average wind speed in July:
9.6km/h - Average wind speed in August:
9.4km/h - Average wind speed in September:
10.4km/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 (9.4km/h).
Average humidity
Lahti, Finland
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (67%).
Average rainfall
Lahti, Finland
The wettest month (with the highest rainfall) is July (46mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days
Lahti, Finland
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
3.7 days - Average rainfall days in March:
6.5 days - Average rainfall days in April:
11.6 days - Average rainfall days in May:
11.7 days - Average rainfall days in June:
12.3 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
11.7 days - Average rainfall days in September:
11.2 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
10.7 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (3.7 days).
Average snowfall
Lahti, Finland
- Average snowfall in January:
196mm - Average snowfall in February:
179mm - Average snowfall in March:
162mm - Average snowfall in April:
52mm - Average snowfall in May:
37mm - Average snowfall in June:
0mm
The month with the highest snowfall is January (196mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days
Lahti, Finland
- Average snowfall days in January:
18.9 days - Average snowfall days in February:
18.5 days - Average snowfall days in March:
17.5 days - Average snowfall days in April:
7.5 days - Average snowfall days in May:
1 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:
3.5 days - Average snowfall days in November:
7.8 days - Average snowfall days in December:
18.9 days
The months with the highest number of snowfall days are January and December (18.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Lahti, 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 2min - 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 3min - Average sunshine in February:
2h and 0min - Average sunshine in March:
3h and 1min - Average sunshine in April:
5h and 5min - Average sunshine in May:
9h and 2min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
9h and 1min - Average sunshine in September:
6h and 3min - 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 36min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).
Average sunshine days
Lahti, Finland
- Average sunshine days in January:
11.3 days - Average sunshine days in February:
10.1 days - Average sunshine days in March:
10.3 days - Average sunshine days in April:
12.4 days - Average sunshine days in May:
17.6 days - Average sunshine days in June:
15.8 days
- Average sunshine days in July:
15.1 days - Average sunshine days in August:
17.6 days - Average sunshine days in September:
16.8 days - Average sunshine days in October:
13.3 days - Average sunshine days in November:
12.1 days - Average sunshine days in December:
8.4 days
The months with the most sunshine days are May and August (17.6 days).
The month with the least sunshine days is December (8.4 days).
Average UV index
Lahti, 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
Lahti, Finland
The months with the most cloud cover are January and February (Cloud cover 81).
The month with the least cloud cover is August (Cloud cover 44).
Average visibility
Lahti, Finland
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (5km).
