This data the coastal Lappeenranta water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Water temperature in Lappeenranta today is 16.6°C. Based on our historical data over a period of ten years, the warmest water in this day in Lappeenranta was recorded in 2019 and was 17.5°C, and the coldest was recorded in 2012 at 14.1°C. Water temperature in Lappeenranta is expected to drop to 14.4°C in the next 10 days. September average water temperature in Lappeenranta is 14.6°C, the minimum temperature is 10°C, and the maximum is 19.3°C.
Throughout the year, the water temperature in Lappeenranta does not rise above 20°C and therefore is not suitable for comfortable swimming. But on some days of July, August, the water temperature warms up to 20°C and above. The average water temperature in Lappeenranta in winter reaches 1.3°C, in spring 2.5°C, in summer the average temperature rises to 16.7°C, and in autumn it is 9.6°C.
8 September 2025 |
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today temp |
16.6°C |
7 September 2025 |
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yesterday temp |
15.8°C |
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Lappeenranta. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Lappeenranta. Data in table shown for 8 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
0' 2" | 0' 2" | 0' 2" | 0' 2" |
0.06 m | 0.06 m | 0.06 m | 0.05 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
0' 2" | 0' 1" | 0' 1" | 0' 1" |
0.04 m | 0.03 m | 0.03 m | 0.03 m |
Data in a table show Lappeenranta temperature today (8 September 2025). For more information and forecast for a few days, go to the weather forecast Lappeenranta.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
15.8°C | 15.7°C | 15.4°C | 16.2°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
17.6°C | 18.7°C | 18.3°C | 16.8°C |
You may also be interested in other sections of our site for Lappeenranta: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly water temperature in Lappeenranta. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Lappeenranta on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve
Month | Avr | Min | Max | |
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January | 0.9°C | -0.4°C | 2.8°C | cold |
Water temperature in Lappeenranta in January | ||||
February | 0.2°C | -0.7°C | 1°C | cold |
Water temperature in Lappeenranta in February | ||||
March | 0.2°C | -0.8°C | 1.7°C | cold |
Water temperature in Lappeenranta in March | ||||
April | 0.8°C | -0.3°C | 4.8°C | cold |
Water temperature in Lappeenranta in April | ||||
May | 6.4°C | 1°C | 17.3°C | cold |
Water temperature in Lappeenranta in May | ||||
June | 13.5°C | 7.3°C | 22.4°C | cold |
Water temperature in Lappeenranta in June | ||||
July | 18°C | 10.8°C | 25.5°C | cold |
Water temperature in Lappeenranta in July | ||||
August | 18.6°C | 15.6°C | 22.6°C | cold |
Water temperature in Lappeenranta in August | ||||
September | 14.6°C | 10°C | 19.3°C | cold |
Water temperature in Lappeenranta in September | ||||
October | 9.2°C | 3.9°C | 14.1°C | cold |
Water temperature in Lappeenranta in October | ||||
November | 5.1°C | 2.7°C | 8.1°C | cold |
Water temperature in Lappeenranta in November | ||||
December | 2.7°C | 0.3°C | 4.6°C | cold |
Water temperature in Lappeenranta in December |