Kaarina weather in May

In May, Kaarina sees average daytime highs of 15°C and overnight lows near 5°C, with 41 mm of precipitation across 8.9 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 17°C by the end. The sky is clear or mostly clear about 33% 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 Kaarina's 1st-clearest and 9th-windiest month. For the whole year in context, see Kaarina's year-round climate.

Daytime high
15°
5th warmest
Overnight low
8th coldest
Precipitation
41 mm
8.9 wet days
Daylight
16 h 54 min
4:00 AM – 8:53 PM
Cloud cover
57%
1st clearest
Wind
12 km/h
9th windiest
Solar energy
5.55 kWh/m²
Travel score
4.6
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 17°C by the end.

A typical May day in Kaarina reaches about 15°C in the afternoon and slips back to 5°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 21°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)
1122
2122
3133
4133
5133
6133
7133
8133
9143
10144
11144
12144
13144
14144
15154
16155
17155
18155
19155
20155
21166
22166
23166
24166
25166
26166
27177
28177
29177
30177
31177

How May really feels in Kaarina

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 7 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
7
wind chill below the day's low

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

Kaarina 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-1° / -6°4910.18.66.30.0
Feb-2° / -7°378.57.28.60.0
Mar / -5°368.25.711.30.0
Apr / -0°3381.814.21.7
May15° / 418.90.116.84.6
Jun19° / 6810.8018.55.9
Jul22° / 12°8512.3017.86.2
Aug20° / 11°8012.6015.46.0
Sep15° / 589.5012.64.5
Oct / 5910.40.69.71.6
Nov / -0°5510.93.47.10.0
Dec / -4°5611.66.85.50.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24852
34852
45050
55050
65050
75149
85248
95248
105347
115347
125347
135347
145347
155347
165347
175248
185248
195248
205149
215149
225149
235149
245248
255248
265248
275347
285347
295347
305347
315347

Chance of precipitation in May

Any precipitationSnow

Kaarina gets around 41 mm of rain and snow over 8.9 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 32% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1282
2282
3282
4282
5281
6271
7271
8271
9271
10261
11261
12260
13260
14260
15260
16260
17270
18270
19280
20290
21290
22300
23300
24310
25310
26310
27320
28320
29320
30320
31320

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 (%)Humid (%)
110000
210000
310000
410000
510000
610000
710000
810000
910000
109910
119910
129910
139910
149910
159820
169820
179820
189820
199820
209820
219820
229820
239721
249721
259721
269721
279721
289721
299631
309631
319631

Wind in May

Winds average 12 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
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

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 4:39 AM to 3:30 AM, and sunset from 8:16 PM to 9:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.64:398:16
215.74:378:19
315.84:348:21
415.94:318:24
516.04:288:26
616.14:268:29
716.14:238:31
816.24:208:34
916.34:188:36
1016.44:158:39
1116.54:128:41
1216.64:108:44
1316.64:078:46
1416.74:058:49
1516.84:038:51
1616.94:008:53
1717.03:588:56
1817.03:568:58
1917.13:539:00
2017.23:519:03
2117.33:499:05
2217.33:479:07
2317.43:459:09
2417.53:439:12
2517.63:419:14
2617.63:399:16
2717.73:379:18
2817.83:359:20
2917.83:339:22
3017.93:329:24
3117.93:309:26

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.55 kWh/m².

For context, solar energy here swings from a low near 0.15 kWh/m² to a high of 5.89 kWh/m² in June across the year — May's 5.55 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
105.4Bright
115.4Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.6Bright
175.6Bright
185.6Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Is May a good time to visit Kaarina?

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

4.6
Sightseeing
4th-best month of the year
0.4
Beach & pool
5th-best month of the year

May is a reasonable time to visit Kaarina for sightseeing.

What to pack for Kaarina in May

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

In May, Kaarina sees daytime highs around 15°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 Kaarina 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 at the nearest coast (about 31 km away) 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
Jun12Bracing
Jul16Cool
Aug17Cool
Sep14Bracing
Oct10Bracing
Nov7Bracing
Dec5Bracing

UV index in Kaarina 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 Kaarina peaks around June 17 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateModerateLowJun 17UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Kaarina?

Kaarina sits at 60.4°N, 22.4°E, 31 m above sea level, in Finland. The nearest listed city is Turku, 7.0 km away.

Raseborg

Topography around Kaarina

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

Within 3 km, the terrain around Kaarina has only modest variations in elevation — a maximum elevation change of 60 m around an average of 27 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 191 m; within 80 km, significant variations in elevation — a maximum elevation change of 276 m.

The land around Kaarina is covered by trees (58%) within 3 km, trees (51%) within 16 km, and trees (46%) and water (36%) within 80 km.

3 km
60 m
16 km
191 m
80 km
276 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Turku 7.0 km · Väståboland 13 km · Lieto 13 km · Raisio 14 km · Naantali 20 km · Salo 42 km · Loimaa 62 km · Raseborg 76 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 Kaarina (60.4072°, 22.369°, elevation 31 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).