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Lappeenranta, Finland climate
Dfb Warm-summer humid continental
Lappeenranta has a seasonal cold-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 22°C, while the coldest is January averaging around −9°C at night. Around 665 mm of precipitation falls each year, peaking in July (78 mm) and easing off in April (29 mm). At latitude 61°N, day length swings from 5.2 hours in midwinter to 18.8 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsLappeenranta climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −4 | −4 | 1 | 8 | 15 | 20 | 22 | 20 | 14 | 7 | 2 | −2 |
| Avg temp (°C) | −7 | −7 | −3 | 4 | 10 | 15 | 18 | 16 | 11 | 5 | 0 | −4 |
| Avg low (°C) | −9 | −10 | −6 | −1 | 5 | 10 | 13 | 12 | 7 | 2 | −2 | −6 |
| Precipitation (mm) | 56 | 41 | 44 | 29 | 38 | 56 | 78 | 76 | 54 | 67 | 67 | 60 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −4 | −4 | 1 | 8 | 15 | 20 |
| Avg temp (°C) | −7 | −7 | −3 | 4 | 10 | 15 |
| Avg low (°C) | −9 | −10 | −6 | −1 | 5 | 10 |
| Precipitation (mm) | 56 | 41 | 44 | 29 | 38 | 56 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 20 | 14 | 7 | 2 | −2 |
| Avg temp (°C) | 18 | 16 | 11 | 5 | 0 | −4 |
| Avg low (°C) | 13 | 12 | 7 | 2 | −2 | −6 |
| Precipitation (mm) | 78 | 76 | 54 | 67 | 67 | 60 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 8 | 7 | 5 | 5 | 7 | 7 | 7 | 6 | 8 | 8 | 9 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.0 | 0.2 | 0.1 | — | — | — | — |
| Days with low ≤ 0°C (days) | 29 | 26 | 28 | 17 | 4 | 0.1 | — | — | 1 | 10 | 20 | 27 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 8 | 7 | 5 | 5 | 7 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | 0.0 |
| Days with low ≤ 0°C (days) | 29 | 26 | 28 | 17 | 4 | 0.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 7 | 6 | 8 | 8 | 9 |
| Days with high ≥ 32°C (days) | 0.2 | 0.1 | — | — | — | — |
| Days with low ≤ 0°C (days) | — | — | 1 | 10 | 20 | 27 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 67 | 72 | 69 | 69 | 67 | 67 | 70 | 78 | 78 | 77 |
| Clear days (≤ 30% cloud) | 3 | 3 | 4 | 2 | 3 | 3 | 3 | 4 | 3 | 1 | 2 | 2 |
| Partly cloudy days (30–70%) | 8 | 8 | 11 | 10 | 11 | 11 | 12 | 10 | 10 | 7 | 6 | 7 |
| Cloudy days (≥ 70%) | 20 | 17 | 16 | 18 | 17 | 16 | 16 | 17 | 17 | 22 | 21 | 22 |
| Relative humidity (%) | 98 | 98 | 95 | 84 | 77 | 76 | 78 | 81 | 86 | 92 | 97 | 98 |
| Wind speed (mph) | 2.9 | 3.1 | 3.7 | 3.8 | 3.7 | 3.5 | 3.4 | 3.4 | 3.5 | 3.3 | 2.8 | 3.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 72 | 67 | 72 | 69 | 69 |
| Clear days (≤ 30% cloud) | 3 | 3 | 4 | 2 | 3 | 3 |
| Partly cloudy days (30–70%) | 8 | 8 | 11 | 10 | 11 | 11 |
| Cloudy days (≥ 70%) | 20 | 17 | 16 | 18 | 17 | 16 |
| Relative humidity (%) | 98 | 98 | 95 | 84 | 77 | 76 |
| Wind speed (mph) | 2.9 | 3.1 | 3.7 | 3.8 | 3.7 | 3.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 67 | 70 | 78 | 78 | 77 |
| Clear days (≤ 30% cloud) | 3 | 4 | 3 | 1 | 2 | 2 |
| Partly cloudy days (30–70%) | 12 | 10 | 10 | 7 | 6 | 7 |
| Cloudy days (≥ 70%) | 16 | 17 | 17 | 22 | 21 | 22 |
| Relative humidity (%) | 78 | 81 | 86 | 92 | 97 | 98 |
| Wind speed (mph) | 3.4 | 3.4 | 3.5 | 3.3 | 2.8 | 3.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Lappeenranta Lentoasema, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.