Lappeenranta weather in May

In May, Lappeenranta sees average daytime highs of 14°C and overnight lows near 5°C, with 46 mm of precipitation across 9.2 wet days and about 17 hours of daylight. It is the 4th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 12°C in the first days to 17°C by the end. The sky is clear or mostly clear about 26% of the time in May, and the air most often feels dry.

Daylight stretches from about 15 h 42 min at the start of May to 18 h 06 min by month's end. Set against the rest of the year, May is Lappeenranta's 1st-clearest and 10th-windiest month. For the whole year in context, see Lappeenranta's year-round climate.

Daytime high
14°
4th warmest
Overnight low
8th coldest
Precipitation
46 mm
9.2 wet days
Daylight
17 hours
3:32 AM – 8:35 PM
Cloud cover
61%
1st clearest
Wind
11 km/h
10th windiest
Solar energy
5.26 kWh/m²
Travel score
4.3
out of 10

Lappeenranta is urban settlement in South Karelia, Finland.

Air quality
Excellent
PM2.5 4.9 µg/m³ · 2019
Density
1,335/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 12°C in the first days to 17°C by the end.

A typical May day in Lappeenranta reaches about 14°C in the afternoon and slips back to 5°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 21°C. Set against its neighbours, May runs about 7°C warmer than April and about 5°C cooler than June.

10°20°151015202531
Avg high (°C)Avg low (°C)
1112
2113
3123
4123
5123
6123
7133
8134
9134
10134
11134
12144
13145
14145
15145
16145
17155
18156
19156
20156
21156
22156
23167
24167
25167
26167
27167
28178
29178
30178
31178

How May really feels in Lappeenranta

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 5 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
5
wind chill below the day's low

The story in May is cold — wind chill drags the overnight "feels like" below the raw low.

Lappeenranta weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-4° / -8°4210.311.66.10.0
Feb-4° / -9°3899.48.50.0
Mar / -6°3698.311.30.0
Apr / -1°338.43.314.21.0
May14° / 469.20.3174.3
Jun19° / 11°6611.9018.75.7
Jul22° / 14°73120186.2
Aug20° / 12°7512.4015.55.8
Sep14° / 5610.7012.64.0
Oct / 5711.21.69.71.0
Nov / -2°5411.26.16.90.0
Dec-2° / -6°5211.310.25.30.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
24060
34060
44060
54060
64159
74258
84357
94357
104357
114456
124456
134456
144456
154456
164357
174456
184456
194357
204357
214357
224357
234258
244258
254258
264258
274258
284258
294258
304258
314258

Chance of precipitation in May

Any precipitationSnow

Lappeenranta gets around 46 mm of rain and snow over 9.2 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 30% and peaks near 33% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1284
2284
3283
4283
5283
6282
7282
8282
9272
10271
11271
12281
13281
14281
15291
16291
17290
18300
19300
20310
21310
22320
23320
24320
25330
26330
27330
28330
29330
30330
31330

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
14991
15991
16991
17991
18991
19991
20982
21982
22982
23982
24973
25973
26973
27973
28973
29964
30964
31964

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 15 h 42 min at the start of May to 18 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 144 minutes over May. Sunrise moves from 4:13 AM to 3:00 AM, and sunset from 7:56 PM to 9:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.74:137:56
215.84:107:59
315.94:078:01
416.04:048:04
516.14:018:06
616.23:598:09
716.33:568:12
816.43:538:14
916.43:508:17
1016.53:488:19
1116.63:458:22
1216.73:428:25
1316.83:408:27
1416.93:378:30
1517.03:358:32
1617.03:328:35
1717.13:308:37
1817.23:278:40
1917.33:258:42
2017.43:238:44
2117.43:208:47
2217.53:188:49
2317.63:168:52
2417.73:148:54
2517.73:128:56
2617.83:108:58
2717.93:089:00
2817.93:069:03
2918.03:049:05
3018.13:029:07
3118.13:009:09

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.26 kWh/m².

For context, solar energy here swings from a low near 0.12 kWh/m² to a high of 5.55 kWh/m² in June across the year — May's 5.26 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.7Bright
34.7Bright
44.8Bright
54.8Bright
64.9Bright
74.9Bright
85.0Bright
95.0Bright
105.1Bright
115.1Bright
125.2Bright
135.2Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in May

Is May a good time to visit Lappeenranta?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.3
Sightseeing
4th-best month of the year
0.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Lappeenranta for sightseeing.

What to pack for Lappeenranta in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Lappeenranta sees daytime highs around 14°C and nights near 5°C. Worth packing: a warm layer, rain gear and sun protection. About 9 days see rain.

a warm layerrain gearsun protection

Sea temperature near Lappeenranta in May

The nearest coast averages about 7°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 49 km away) is warmest in August at about 18°C and coldest in February near -0°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan1Bracing
Feb0Bracing
Mar0Bracing
Apr1Bracing
May7Bracing
Jun13Bracing
Jul17Cool
Aug18Cool
Sep15Bracing
Oct10Bracing
Nov6Bracing
Dec3Bracing

UV index in Lappeenranta in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lappeenranta peaks around June 22 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 22UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5Moderate
Jul5Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Lappeenranta?

Lappeenranta sits at 61.1°N, 28.2°E, 104 m above sea level, in Finland. The nearest listed city is Imatra, 33 km away.

HaminaKouvolaAnjalaMikkeliKarhula

Topography around Lappeenranta

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Lappeenranta.

Within 3 km, the terrain around Lappeenranta has only modest variations in elevation — a maximum elevation change of 180 m around an average of 85 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 188 m; within 80 km, only modest variations in elevation — a maximum elevation change of 242 m.

The land around Lappeenranta is covered by trees (36%), artificial surfaces (29%) and water (27%) within 3 km, trees (63%) and water (20%) within 16 km, and trees (72%) and water (22%) within 80 km.

3 km
180 m
16 km
188 m
80 km
242 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Imatra 33 km · Svetogorsk 37 km · Vyborg 50 km · Hamina 76 km · Kouvola 83 km · Anjala 84 km · Mikkeli 85 km · Karhula 91 km

Finland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 85% of US
price level, 2025
GDP per capita
$56,149
2025
Happiness
7.8 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 603
Religion
Lutheran 67%none 31%other 2%Greek Orthodox 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Lappeenranta (61.0587°, 28.1887°, elevation 104 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).