Raseborg weather in May

In May, Raseborg sees average daytime highs of 13°C and overnight lows near 5°C, with 37 mm of precipitation across 8.1 wet days and about 16.7 hours of daylight. It is the 5th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 11°C in the first days to 15°C by the end. The sky is clear or mostly clear about 34% of the time in May, and the air most often feels dry.

Daylight stretches from about 15 h 30 min at the start of May to 17 h 48 min by month's end. Set against the rest of the year, May is Raseborg's 1st-clearest and 10th-windiest month. For the whole year in context, see Raseborg's year-round climate.

Daytime high
13°
5th warmest
Overnight low
8th coldest
Precipitation
37 mm
8.1 wet days
Daylight
16 h 48 min
3:59 AM – 8:46 PM
Cloud cover
55%
1st clearest
Wind
14 km/h
10th windiest
Solar energy
5.59 kWh/m²
Travel score
4.0
out of 10

Raseborg is town in the region of Uusimaa in Finland.

Density
22/km²
people per km²
Founded
2009

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 15°C by the end.

A typical May day in Raseborg reaches about 13°C in the afternoon and slips back to 5°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 19°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
3113
4113
5113
6123
7124
8124
9124
10124
11134
12134
13134
14135
15135
16135
17135
18145
19145
20146
21146
22146
23146
24156
25156
26157
27157
28157
29157
30167
31167

How May really feels in Raseborg

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 6 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
6
wind chill below the day's low

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

Raseborg weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -5°5110.98.96.40.0
Feb-2° / -6°4097.98.60.0
Mar / -4°378.15.711.30.0
Apr / 348.31.914.11.1
May13° / 378.10.116.74.0
Jun18° / 10°539.4018.35.7
Jul21° / 13°579.5017.76.6
Aug20° / 13°6611.4015.46.1
Sep15° / 5310.1012.64.5
Oct / 6510.90.59.81.8
Nov / 63123.87.20.1
Dec / -2°5912.875.70.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25149
35149
45248
55149
65248
75347
85446
95446
105446
115545
125545
135446
145446
155446
165347
175347
185347
195248
205248
215248
225149
235149
245149
255149
265248
275248
285248
295248
305347
315347

Chance of precipitation in May

Any precipitationSnow

Raseborg gets around 37 mm of rain and snow over 8.1 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 26% and peaks near 28% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1252
2252
3252
4252
5251
6251
7241
8241
9241
10241
11241
12241
13251
14251
15251
16251
17261
18261
19270
20270
21270
22280
23280
24280
25280
26280
27280
28270
29270
30270
31270

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
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23982
24982
25982
26982
27982
28973
29973
30973
31973

Wind in May

Winds average 14 km/h in May.

Across May, daily wind ranges from about 14 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 15 h 30 min at the start of May to 17 h 48 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 4:37 AM to 3:29 AM, and sunset from 8:10 PM to 9:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.54:378:10
215.64:348:12
315.74:328:15
415.84:298:17
515.94:268:20
616.04:248:22
716.14:218:25
816.14:188:27
916.24:168:29
1016.34:138:32
1116.44:118:34
1216.54:088:37
1316.64:068:39
1416.64:048:41
1516.74:018:44
1616.83:598:46
1716.93:578:48
1816.93:548:51
1917.03:528:53
2017.13:508:55
2117.23:488:57
2217.23:469:00
2317.33:449:02
2417.43:429:04
2517.43:409:06
2617.53:389:08
2717.63:369:10
2817.63:349:12
2917.73:339:14
3017.73:319:16
3117.83:299:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.59 kWh/m².

For context, solar energy here swings from a low near 0.17 kWh/m² to a high of 5.95 kWh/m² in June across the year — May's 5.59 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.1Bright
45.1Bright
55.2Bright
65.2Bright
75.3Bright
85.3Bright
95.4Bright
105.4Bright
115.5Bright
125.5Bright
135.5Bright
145.6Bright
155.6Bright
165.6Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
306.0Bright
316.0Bright
Planning a trip in May

Is May a good time to visit Raseborg?

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 Raseborg for sightseeing.

What to pack for Raseborg in May

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

In May, Raseborg sees daytime highs around 13°C and nights near 5°C. Worth packing: a warm layer, rain gear and sun protection. About 8 days see rain.

a warm layerrain gearsun protection

Sea temperature near Raseborg 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
Jan3Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May6Bracing
Jun11Bracing
Jul16Cool
Aug17Cool
Sep15Bracing
Oct11Bracing
Nov8Bracing
Dec5Bracing

UV index in Raseborg 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 Raseborg 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 17UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Raseborg?

Raseborg sits at 60.0°N, 23.4°E, 19 m above sea level, in Finland. The nearest listed city is Lohja, 46 km away.

VihtiVäståbolandOlari

Topography around Raseborg

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

Within 3 km, the terrain around Raseborg has only modest variations in elevation — a maximum elevation change of 53 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 90 m; within 80 km, significant variations in elevation — a maximum elevation change of 286 m.

The land around Raseborg is covered by trees (46%) and water (34%) within 3 km, trees (57%) and water (28%) within 16 km, and water (53%) and trees (36%) within 80 km.

3 km
53 m
16 km
90 m
80 km
286 m
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Lohja 46 km · Salo 48 km · Kirkkonummi 58 km · Vihti 69 km · Espoonlahti 70 km · Espoo 72 km · Väståboland 73 km · Olari 75 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 Raseborg (59.9774°, 23.4397°, elevation 19 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).