Słupsk weather in June

In June, Słupsk sees average daytime highs of 18°C and overnight lows near 12°C, with 68 mm of rain across 11.5 wet days and about 16.9 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 19°C by the end. The sky is clear or mostly clear about 29% of the time in June, and the air most often feels dry.

Daylight stretches from about 16 h 36 min at the start of June to 16 h 54 min by month's end. Set against the rest of the year, June is Słupsk's 5th-clearest and 9th-windiest month. For the whole year in context, see Słupsk's year-round climate.

Daytime high
18°
3rd warmest
Overnight low
12°
10th coldest
Rainfall
68 mm
11.5 wet days
Daylight
16 h 54 min
3:24 AM – 8:20 PM
Cloud cover
58%
5th clearest
Wind
16 km/h
9th windiest
Solar energy
5.63 kWh/m²
Travel score
5.6
out of 10

Słupsk is city in the Pomeranian Voivodeship, in the northern part of Poland.

Density
1,870/km²
people per km²
Founded
1000

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 17°C in the first days to 19°C by the end.

A typical June day in Słupsk reaches about 18°C in the afternoon and slips back to 12°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 22°C. Set against its neighbours, June runs about 3°C warmer than May and about 3°C cooler than July.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11710
21710
31711
41711
51711
61711
71711
81711
91711
101711
111812
121812
131812
141812
151812
161812
171812
181812
191812
201812
211812
221813
231813
241813
251813
261913
271913
281913
291913
301913

How June really feels in Słupsk

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.

Słupsk weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°5912.24.77.60.0
Feb / -1°4710.95.19.30.0
Mar / 5110.53.611.50.3
Apr10° / 368.80.813.72.3
May14° / 5610.5015.74.3
Jun18° / 12°6811.5016.95.6
Jul20° / 15°9113.4016.46.0
Aug21° / 15°8513.7014.75.9
Sep17° / 12°7812.3012.55.0
Oct12° / 8013.60.110.22.8
Nov / 6513.21.48.20.7
Dec / 6613.54.57.10.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 22% of June, with mostly cloudy or overcast conditions the remaining 49%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15644
25644
35644
45644
55446
65446
75446
85347
95347
105248
115248
125149
135149
144951
154951
164852
174852
184852
194852
204852
214951
224951
234951
244951
254951
265050
275050
285050
295050
305050

Chance of precipitation in June

Any precipitation

Słupsk gets around 68 mm of rain over 11.5 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 38% and peaks near 42% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
133
233
334
434
534
634
735
835
935
1036
1136
1237
1337
1438
1539
1639
1740
1841
1941
2041
2141
2241
2341
2442
2542
2642
2742
2842
2941
3041

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 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1881020
2871120
3871120
4861220
5851320
6851320
7841420
8831520
9821620
10811720
11811720
12801820
13781930
14772030
15762130
16762130
17752230
18742330
19732340
20722440
21712540
22692650
23682750
24662860
25642970
26633070
27613180
28603280
29573391
305534101

Wind in June

Winds average 16 km/h in June.

Across June, daily wind ranges from about 15 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2617light breeze
2717light breeze
2817light breeze
2916light breeze
3016light breeze

Sunrise & sunset in June

DaylightNight

Daylight runs from about 16 h 36 min at the start of June to 16 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over June. Sunrise moves from 3:33 AM to 3:27 AM, and sunset from 8:06 PM to 8:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
116.63:338:06
216.63:328:07
316.63:318:09
416.73:308:10
516.73:298:11
616.73:288:12
716.83:288:13
816.83:278:14
916.83:268:15
1016.83:268:16
1116.93:258:17
1216.93:258:18
1316.93:258:18
1416.93:248:19
1516.93:248:20
1616.93:248:20
1717.03:248:21
1817.03:248:21
1917.03:248:22
2017.03:248:22
2117.03:248:23
2217.03:248:23
2317.03:248:23
2417.03:248:23
2517.03:258:23
2617.03:258:23
2717.03:268:23
2817.03:268:23
2916.93:278:23
3016.93:278:23

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.63 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 0.41 kWh/m² to a high of 5.63 kWh/m² in June across the year — June's 5.63 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in June

Is June a good time to visit Słupsk?

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
1.7
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Słupsk for sightseeing.

What to pack for Słupsk in June

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

In June, Słupsk sees daytime highs around 18°C and nights near 12°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Słupsk in June

The nearest coast averages about 14°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 20 km away) is warmest in August at about 19°C and coldest in February near 3°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
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr5Bracing
May9Bracing
Jun14Bracing
Jul17Cool
Aug19Cool
Sep16Cool
Oct13Bracing
Nov9Bracing
Dec6Bracing

UV index in Słupsk in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Słupsk peaks around June 18 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 18UV 6Dec 20UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5Moderate
Jun6High
Jul6High
Aug5Moderate
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Słupsk?

Słupsk sits at 54.5°N, 17.0°E, 18 m above sea level, in Poland. The nearest listed city is Ustka, 17 km away.

BytówLęborkKoszalinKościerzynaKartuzyWejherowoBiałogard

Topography around Słupsk

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

Within 3 km, the terrain around Słupsk has only modest variations in elevation — a maximum elevation change of 78 m around an average of 42 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 162 m; within 80 km, significant variations in elevation — a maximum elevation change of 339 m.

The land around Słupsk is covered by trees (45%) and artificial surfaces (33%) within 3 km, trees (40%) and cropland (39%) within 16 km, and trees (39%) and water (30%) within 80 km.

3 km
78 m
16 km
162 m
80 km
339 m
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Ustka 17 km · Bytów 44 km · Lębork 47 km · Koszalin 63 km · Kościerzyna 73 km · Kartuzy 77 km · Wejherowo 79 km · Białogard 85 km

Poland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 52% of US
price level, 2025
GDP per capita
$28,420
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
9.4
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 600
Religion
Roman Catholic 71%refused to answer 21%no religion 7%

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 Słupsk (54.4641°, 17.0287°, elevation 18 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).