Naantali weather in June

In June, Naantali sees average daytime highs of 18°C and overnight lows near 10°C, with 62 mm of rain across 10.5 wet days and about 18.5 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 16°C in the first days to 19°C by the end. The sky is clear or mostly clear about 31% of the time in June, and the air most often feels dry.

Daylight stretches from about 18 hours at the start of June to 18 h 36 min by month's end. Set against the rest of the year, June is Naantali's 3rd-clearest and 9th-windiest month. For the whole year in context, see Naantali's year-round climate.

Daytime high
18°
3rd warmest
Overnight low
10°
10th coldest
Rainfall
62 mm
10.5 wet days
Daylight
18 h 36 min
3:14 AM – 9:50 PM
Cloud cover
58%
3rd clearest
Wind
13 km/h
9th windiest
Solar energy
5.97 kWh/m²
Travel score
5.6
out of 10

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 16°C in the first days to 19°C by the end.

A typical June day in Naantali reaches about 18°C in the afternoon and slips back to 10°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 23°C. Set against its neighbours, June runs about 4°C warmer than May and about 3°C cooler than July.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1168
2168
3168
4178
5178
6179
7179
8179
9179
10179
11179
12179
131710
141710
151810
161810
171810
181810
191810
201810
211811
221811
231811
241811
251811
261911
271911
281911
291912
301912

How June really feels in Naantali

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

June sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Naantali weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -5°4810.28.36.30.0
Feb-2° / -7°368.47.28.60.0
Mar / -4°348.25.411.30.0
Apr / 327.71.814.21.2
May13° / 398.60.116.94.0
Jun18° / 10°6210.5018.55.6
Jul21° / 13°7611.8017.86.2
Aug20° / 12°7512.2015.45.9
Sep15° / 589.7012.64.4
Oct / 62110.69.71.7
Nov / 5811.33.27.10.1
Dec / -3°5712.36.85.50.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 20% of June, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35545
45545
55545
65446
75347
85347
95248
105248
115149
125149
135050
144852
154951
164852
174852
184852
194852
204951
214951
224951
234951
244951
254951
264951
274951
284951
295050
305050

Chance of precipitation in June

Any precipitation

Naantali gets around 62 mm of rain over 10.5 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 38% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
130
231
331
431
531
632
732
833
933
1034
1134
1235
1335
1436
1537
1637
1738
1838
1938
2038
2138
2238
2338
2438
2538
2638
2738
2838
2937
3037

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
197300
296400
396400
496400
595500
695500
795500
894600
994600
1094600
1193700
1293700
1392800
1492800
1591900
1691900
1791900
18891010
19891010
20891010
21881110
22881110
23881110
24871210
25861220
26851320
27841321
28831421
29811531
30801631

Wind in June

Winds average 13 km/h in June.

Across June, 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.

051015151015202530
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

Sunrise & sunset in June

DaylightNight

Daylight runs from about 18 hours at the start of June to 18 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over June. Sunrise moves from 3:29 AM to 3:18 AM, and sunset from 9:30 PM to 9:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
118.03:299:30
218.13:289:31
318.13:269:33
418.23:259:35
518.23:249:37
618.33:229:38
718.33:219:40
818.43:209:41
918.43:199:42
1018.43:189:44
1118.53:179:45
1218.53:169:46
1318.53:169:47
1418.63:159:48
1518.63:159:49
1618.63:149:50
1718.63:149:51
1818.63:149:51
1918.63:149:52
2018.63:149:52
2118.73:149:53
2218.73:149:53
2318.73:149:53
2418.73:149:53
2518.63:159:53
2618.63:159:53
2718.63:169:53
2818.63:169:53
2918.63:179:53
3018.63:189:52

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.97 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 0.16 kWh/m² to a high of 5.97 kWh/m² in June across the year — June's 5.97 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.0Intense
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.0Bright
126.0Bright
136.0Bright
146.0Bright
156.0Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in June

Is June a good time to visit Naantali?

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

5.6
Sightseeing
3rd-best month of the year
1.6
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Naantali for sightseeing.

What to pack for Naantali in June

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

In June, Naantali sees daytime highs around 18°C and nights near 10°C. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

Sea temperature near Naantali in June

The nearest coast averages about 11°C in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 24 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
Jun11Bracing
Jul16Cool
Aug17Cool
Sep14Bracing
Oct10Bracing
Nov7Bracing
Dec4Bracing

UV index in Naantali in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Naantali peaks around June 16 at about 5 (high) — 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateModerateLowJun 16UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul4Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Naantali?

Naantali sits at 60.5°N, 22.0°E, 9 m above sea level, in Finland. The nearest listed city is Raisio, 8.0 km away.

LoimaaRauma

Topography around Naantali

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

Within 3 km, the terrain around Naantali has only modest variations in elevation — a maximum elevation change of 49 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 73 m; within 80 km, significant variations in elevation — a maximum elevation change of 263 m.

The land around Naantali is covered by trees (45%) and water (28%) within 3 km, trees (48%) and water (25%) within 16 km, and water (43%) and trees (41%) within 80 km.

3 km
49 m
16 km
73 m
80 km
263 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
June weather nearby: Raisio 8.0 km · Turku 14 km · Kaarina 20 km · Väståboland 24 km · Lieto 24 km · Salo 62 km · Loimaa 70 km · Rauma 78 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 Naantali (60.4674°, 22.0243°, elevation 9 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).