Lauttasaari weather in May

In May, Lauttasaari sees average daytime highs of 14°C and overnight lows near 5°C, with 43 mm of precipitation across 8.7 wet days and about 16.8 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 12°C in the first days to 16°C by the end. The sky is clear or mostly clear about 30% of the time in May, and the air most often feels dry.

Daylight stretches from about 15 h 36 min at the start of May to 17 h 54 min by month's end. Set against the rest of the year, May is Lauttasaari's 1st-clearest and 9th-windiest month. For the whole year in context, see Lauttasaari's year-round climate.

Daytime high
14°
5th warmest
Overnight low
8th coldest
Precipitation
43 mm
8.7 wet days
Daylight
16 h 48 min
3:52 AM – 8:42 PM
Cloud cover
58%
1st clearest
Wind
13 km/h
9th windiest
Solar energy
5.52 kWh/m²
Travel score
4.1
out of 10

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 16°C by the end.

A typical May day in Lauttasaari 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 9°C and 20°C. Set against its neighbours, May runs about 6°C warmer than April and about 4°C cooler than June.

10°20°151015202531
Avg high (°C)Avg low (°C)
1113
2113
3123
4123
5124
6124
7124
8134
9134
10134
11134
12135
13135
14145
15145
16145
17146
18146
19146
20146
21156
22156
23157
24157
25157
26157
27167
28167
29168
30168
31168

How May really feels in Lauttasaari

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 3 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
3
wind chill below the day's low

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

Lauttasaari weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -6°5011.110.26.40.0
Feb-2° / -7°418.98.88.60.0
Mar / -5°378.26.911.30.0
Apr / 378.82.414.21.2
May14° / 438.70.216.84.1
Jun18° / 10°6611.4018.45.5
Jul21° / 13°6911.2017.76.3
Aug20° / 12°7012.2015.45.9
Sep15° / 5510.1012.64.3
Oct / 5910.90.79.71.5
Nov / -0°5911.64.77.10.0
Dec / -4°5712.48.75.60.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24555
34654
44654
54654
64753
74753
84753
94852
104852
114852
124852
134852
144852
154852
164852
174852
184753
194753
204753
214654
224753
234852
244753
254753
264753
274753
284852
294753
304753
314753

Chance of precipitation in May

Any precipitationSnow

Lauttasaari gets around 43 mm of rain and snow over 8.7 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 28% and peaks near 31% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1273
2273
3272
4272
5272
6262
7261
8261
9261
10261
11261
12261
13261
14261
15261
16271
17271
18281
19281
20291
21290
22300
23300
24300
25310
26310
27310
28310
29310
30310
31310

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 98% 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
10991
11991
12991
13991
14991
15982
16982
17982
18982
19982
20982
21982
22973
23973
24973
25973
26973
27973
28973
29973
30964
31964

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 15 h 36 min at the start of May to 17 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 138 minutes over May. Sunrise moves from 4:31 AM to 3:22 AM, and sunset from 8:05 PM to 9:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.64:318:05
215.74:288:07
315.74:258:10
415.84:228:12
515.94:208:15
616.04:178:17
716.14:148:20
816.24:128:22
916.34:098:25
1016.34:078:27
1116.44:048:30
1216.54:028:32
1316.63:598:35
1416.73:578:37
1516.83:548:39
1616.83:528:42
1716.93:508:44
1817.03:478:46
1917.13:458:49
2017.13:438:51
2117.23:418:53
2217.33:398:55
2317.33:378:58
2417.43:359:00
2517.53:339:02
2617.63:319:04
2717.63:299:06
2817.73:279:08
2917.73:259:10
3017.83:249:12
3117.93:229:14

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.52 kWh/m².

For context, solar energy here swings from a low near 0.16 kWh/m² to a high of 5.79 kWh/m² in June across the year — May's 5.52 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
25.0Bright
35.0Bright
45.1Bright
55.1Bright
65.2Bright
75.2Bright
85.3Bright
95.3Bright
105.3Bright
115.4Bright
125.4Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.6Bright
185.6Bright
195.6Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.9Bright
Planning a trip in May

Is May a good time to visit Lauttasaari?

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

4.1
Sightseeing
5th-best month of the year
0.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Lauttasaari for sightseeing.

What to pack for Lauttasaari in May

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

In May, Lauttasaari 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 Lauttasaari in May

The nearest coast averages about 6°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 17°C and coldest in March near 1°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
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May6Bracing
Jun11Bracing
Jul16Cool
Aug17Cool
Sep14Bracing
Oct10Bracing
Nov7Bracing
Dec4Bracing

UV index in Lauttasaari 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 Lauttasaari peaks around June 18 at about 5 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 18UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Lauttasaari?

Lauttasaari sits at 60.2°N, 24.9°E, 16 m above sea level, in Finland. The nearest listed city is Helsinki, 4.0 km away.

Topography around Lauttasaari

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

Within 3 km, the terrain around Lauttasaari has only modest variations in elevation — a maximum elevation change of 36 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 83 m; within 80 km, only modest variations in elevation — a maximum elevation change of 195 m.

The land around Lauttasaari is covered by water (70%) within 3 km, water (49%) and trees (29%) within 16 km, and water (49%) and trees (40%) within 80 km.

3 km
36 m
16 km
83 m
80 km
195 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Helsinki 4.0 km · Taka-Töölö 4.0 km · Munkkiniemi 4.0 km · Kallio 5.0 km · Suomenlinna 7.0 km · Leppävaara 7.0 km · Matinkylä 7.0 km · Pitäjänmäki 7.0 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 Lauttasaari (60.159°, 24.868°, elevation 16 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).