Naantali weather in July

In July, Naantali sees average daytime highs of 21°C and overnight lows near 13°C, with 76 mm of rain across 11.8 wet days and about 17.8 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 21°C by the end. The sky is clear or mostly clear about 30% of the time in July, and the air most often feels dry.

Daylight stretches from about 18 h 36 min at the start of July to 16 h 48 min by month's end. Set against the rest of the year, July is Naantali's 2nd-clearest and 12th-windiest month. For the whole year in context, see Naantali's year-round climate.

Daytime high
21°
1st warmest
Overnight low
13°
12th coldest
Rainfall
76 mm
11.8 wet days
Daylight
17 h 54 min
3:41 AM – 9:34 PM
Cloud cover
57%
2nd clearest
Wind
13 km/h
12th windiest
Solar energy
5.66 kWh/m²
Travel score
6.2
out of 10

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 21°C by the end.

A typical July day in Naantali reaches about 21°C in the afternoon and slips back to 13°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°C. Set against its neighbours, July runs about 3°C warmer than June and about 1°C warmer than August.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
11912
21912
32012
42012
52012
62012
72013
82013
92013
102013
112013
122113
132113
142113
152113
162113
172113
182113
192113
202113
212114
222114
232114
242114
252114
262114
272114
282114
292114
302114
312114

How July really feels in Naantali

Once humidity and wind are folded in, July 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

July 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 July compares with the rest of the year at a glance. July is the 1st-warmest and 1st-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 21% of July, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15050
25050
35050
45149
55149
65149
75149
85149
95248
105347
115347
125347
135347
145248
155248
165248
175248
185248
195149
205149
215149
225149
235149
245149
255149
265149
275149
285149
295149
305248
315248

Chance of precipitation in July

Any precipitation

Naantali gets around 76 mm of rain over 11.8 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 38% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
237
337
437
538
638
738
838
938
1038
1138
1238
1338
1439
1539
1639
1739
1839
1939
2038
2138
2238
2338
2438
2538
2638
2738
2838
2938
3038
3138

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 57% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1791731
2761941
3752041
4742141
5712351
6702451
7682651
8662761
9652861
10642961
11623071
12613171
13593281
14583381
15573481
16553591
17543592
185236102
195236102
205037112
214937112
224937123
234837123
244737133
254637133
264637144
274536144
284536154
294536154
304536164
314535164

Wind in July

Winds average 13 km/h in July, the calmest month.

Across July, daily wind ranges from about 12 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
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 18 h 36 min at the start of July to 16 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over July. Sunrise moves from 3:19 AM to 4:13 AM, and sunset from 9:52 PM to 9:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
118.63:199:52
218.53:209:51
318.53:219:50
418.53:229:50
518.43:239:49
618.43:249:48
718.43:269:47
818.33:279:46
918.33:299:45
1018.23:309:43
1118.23:329:42
1218.13:349:41
1318.13:359:39
1418.03:379:38
1518.03:399:36
1617.93:419:34
1717.83:439:33
1817.83:459:31
1917.73:479:29
2017.63:499:27
2117.63:519:25
2217.53:539:23
2317.43:559:21
2417.43:579:19
2517.34:009:17
2617.24:029:14
2717.14:049:12
2817.14:069:10
2917.04:099:07
3016.94:119:05
3116.84:139:03

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.66 kWh/m².

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 — July's 5.66 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.6Bright
195.6Bright
205.6Bright
215.5Bright
225.5Bright
235.5Bright
245.4Bright
255.4Bright
265.3Bright
275.3Bright
285.3Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in July

Is July a good time to visit Naantali?

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

6.2
Sightseeing
1st-best month of the year
3.6
Beach & pool
1st-best month of the year

July is a reasonable time to visit Naantali for sightseeing.

What to pack for Naantali in July

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

In July, Naantali sees daytime highs around 21°C and nights near 13°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Naantali in July

The nearest coast averages about 16°C in July — 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 July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 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
July 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).