Korsholm weather in May

In May, Korsholm sees average daytime highs of 14°C and overnight lows near 4°C, with 44 mm of precipitation across 9.2 wet days and about 17.6 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 11°C in the first days to 16°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 16 h 06 min at the start of May to 18 h 54 min by month's end. Set against the rest of the year, May is Korsholm's 1st-clearest and 9th-windiest month. For the whole year in context, see Korsholm's year-round climate.

Daytime high
14°
5th warmest
Overnight low
8th coldest
Precipitation
44 mm
9.2 wet days
Daylight
17 h 36 min
3:42 AM – 9:17 PM
Cloud cover
58%
1st clearest
Wind
12 km/h
9th windiest
Solar energy
5.39 kWh/m²
Travel score
4.0
out of 10

Korsholm is village in Korsholm, Finland.

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 11°C in the first days to 16°C by the end.

A typical May day in Korsholm reaches about 14°C in the afternoon and slips back to 4°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 8°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)
1112
2112
3112
4122
5122
6122
7123
8123
9123
10133
11133
12133
13133
14134
15134
16134
17144
18144
19144
20145
21145
22145
23155
24155
25155
26156
27156
28156
29166
30166
31166

How May really feels in Korsholm

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 11 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
11
wind chill below the day's low

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

Korsholm weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -8°349.28.75.40.0
Feb-3° / -9°277.26.98.10.0
Mar / -6°307.66.311.20.0
Apr / -1°338.43.514.51.2
May14° / 449.20.217.64.0
Jun18° / 6411.2019.65.6
Jul21° / 12°7612.4018.76.1
Aug19° / 11°7312.2015.95.8
Sep14° / 539.7012.74.1
Oct / 5410.429.41.0
Nov / -2°46104.76.30.0
Dec-1° / -5°4310.67.54.40.0

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 16% of May, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44753
54753
64753
74852
84951
95050
105050
115149
125050
135149
145248
155149
165149
175149
185149
195149
205050
215050
225050
234951
244951
255050
265050
275050
285050
295050
305050
315050

Chance of precipitation in May

Any precipitationSnow

Korsholm gets around 44 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 32% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1283
2283
3293
4292
5292
6292
7292
8292
9291
10291
11291
12291
13291
14291
15291
16291
17301
18301
19301
20311
21310
22310
23310
24310
25310
26310
27310
28310
29310
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 99% 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
1010000
1110000
1210000
1310000
1410000
1510000
1610000
1710000
1810000
1910000
2010000
2110000
2210000
2310000
249910
259910
269910
279811
289811
299811
309811
319811

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 12 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
112calm
212calm
312calm
412calm
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 16 h 06 min at the start of May to 18 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 168 minutes over May. Sunrise moves from 4:28 AM to 3:04 AM, and sunset from 8:33 PM to 9:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.14:288:33
216.24:258:36
316.34:218:39
416.44:188:42
516.54:158:45
616.64:128:48
716.74:098:51
816.84:068:54
916.94:038:57
1017.03:599:00
1117.13:569:03
1217.23:539:06
1317.33:509:09
1417.43:489:12
1517.53:459:14
1617.63:429:17
1717.73:399:20
1817.83:369:23
1917.93:339:26
2018.03:319:29
2118.13:289:31
2218.23:259:34
2318.23:239:37
2418.33:209:40
2518.43:189:42
2618.53:159:45
2718.63:139:48
2818.73:109:50
2918.73:089:53
3018.83:069:55
3118.93:049:58

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.39 kWh/m².

For context, solar energy here swings from a low near 0.07 kWh/m² to a high of 5.85 kWh/m² in June across the year — May's 5.39 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.8Bright
34.8Bright
44.9Bright
54.9Bright
65.0Bright
75.0Bright
85.1Bright
95.2Bright
105.2Bright
115.2Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.4Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.6Bright
225.6Bright
235.6Bright
245.7Bright
255.7Bright
265.7Bright
275.7Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in May

Is May a good time to visit Korsholm?

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

4.0
Sightseeing
5th-best month of the year
0.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Korsholm for sightseeing.

What to pack for Korsholm in May

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

In May, Korsholm sees daytime highs around 14°C and nights near 4°C. Worth packing: a warm layer, rain gear and sun protection. About 9 days see rain.

a warm layerrain gearsun protection

Sea temperature near Korsholm in May

The nearest coast averages about 5°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 15 km away) is warmest in August at about 16°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°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan1Bracing
Feb0Bracing
Mar0Bracing
Apr1Bracing
May5Bracing
Jun10Bracing
Jul15Bracing
Aug16Cool
Sep13Bracing
Oct9Bracing
Nov5Bracing
Dec3Bracing

UV index in Korsholm 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 Korsholm peaks around June 18 at about 4 (moderate) — 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 18UV 4Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar1Low
Apr2Moderate
May4Moderate
Jun4Moderate
Jul4Moderate
Aug4Moderate
Sep2Low
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Korsholm?

Korsholm sits at 63.1°N, 21.7°E, 15 m above sea level, in Finland. The nearest listed city is Vaasa, 4.0 km away.

KurikkaSeinäjokiKauhavaJakobstadUmeåKokkola

Topography around Korsholm

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

Within 3 km, the terrain around Korsholm has only modest variations in elevation — a maximum elevation change of 32 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 73 m; within 80 km, only modest variations in elevation — a maximum elevation change of 212 m.

The land around Korsholm is covered by trees (58%) and artificial surfaces (21%) within 3 km, trees (53%) and water (22%) within 16 km, and water (46%) and trees (40%) within 80 km.

3 km
32 m
16 km
73 m
80 km
212 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Vaasa 4.0 km · Kurikka 67 km · Seinäjoki 68 km · Kauhava 70 km · Jakobstad 80 km · Umeå 106 km · Kokkola 108 km · Örnsköldsvik 150 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 Korsholm (63.1142°, 21.6822°, elevation 15 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).