Karlskrona weather in August

In August, Karlskrona sees average daytime highs of 20°C and overnight lows near 14°C, with 64 mm of rain across 11.6 wet days and about 14.9 hours of daylight. It is the 2nd-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 18°C by the end. The sky is clear or mostly clear about 24% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 15 h 54 min at the start of August to 13 h 42 min by month's end. Set against the rest of the year, August is Karlskrona's 5th-clearest and 11th-windiest month. For the whole year in context, see Karlskrona's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
14°
12th coldest
Rainfall
64 mm
11.6 wet days
Daylight
14 h 54 min
4:35 AM – 7:28 PM
Cloud cover
61%
5th clearest
Wind
15 km/h
11th windiest
Solar energy
4.39 kWh/m²
Travel score
6.1
out of 10

Karlskrona is urban area in Karlskrona Municipality, Sweden.

Air quality
Good
PM10 17.1 µg/m³ · 2019
Founded
1680

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 18°C by the end.

A typical August day in Karlskrona reaches about 20°C in the afternoon and slips back to 14°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 23°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12114
22114
32114
42114
52114
62114
72114
82114
92014
102014
112014
122014
132014
142014
152014
162014
172014
182014
192014
202014
211913
221913
231913
241913
251913
261913
271913
281913
291813
301813
311812

How August really feels in Karlskrona

Once humidity and wind are folded in, August 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

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

Karlskrona weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°4710.65.57.30.0
Feb / -2°409.25.89.10.0
Mar / -0°348.73.511.40.2
Apr / 327.50.913.81.9
May14° / 4490164.1
Jun17° / 11°559.7017.25.6
Jul20° / 14°6710.3016.86.3
Aug20° / 14°6411.6014.96.1
Sep16° / 11°539.6012.54.9
Oct11° / 5810.80.210.12.6
Nov / 56121.37.90.6
Dec / 5311.43.76.70.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45050
54951
64951
74951
84951
94951
104951
114852
124852
134753
144852
154753
164654
174654
184654
194654
204555
214555
224555
234555
244555
254555
264555
274555
284654
294654
304654
314753

Chance of precipitation in August

Any precipitation

Karlskrona gets around 64 mm of rain over 11.6 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 40% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
131
231
332
432
532
633
733
834
934
1035
1135
1235
1336
1436
1537
1637
1738
1838
1938
2039
2139
2239
2339
2440
2540
2640
2740
2839
2939
3039
3138

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 44% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13249182
23149182
33149182
43249172
53249172
63349172
73348171
83448171
93548171
103547171
113647161
123746160
133746160
143846160
153945160
164045150
174045150
184145140
194244140
204344130
214443130
224543120
234642120
244841110
254940110
265139100
27543790
28553690
29573580
30603370
31613270

Wind in August

Winds average 15 km/h in August.

Across August, daily wind ranges from about 14 km/h on the calmest days to 15 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
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 h 54 min at the start of August to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 132 minutes over August. Sunrise moves from 4:06 AM to 5:06 AM, and sunset from 8:01 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.94:068:01
215.94:087:59
315.84:107:57
415.74:127:55
515.74:147:53
615.64:167:51
715.54:187:49
815.54:197:47
915.44:217:44
1015.34:237:42
1115.24:257:40
1215.24:277:38
1315.14:297:35
1415.04:317:33
1515.04:337:31
1614.94:357:28
1714.84:377:26
1814.74:397:23
1914.74:417:21
2014.64:437:18
2114.54:457:16
2214.44:477:13
2314.44:507:11
2414.34:527:08
2514.24:547:05
2614.14:567:03
2714.04:587:00
2814.05:006:58
2913.95:026:55
3013.85:046:52
3113.75:066:50

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.39 kWh/m².

For context, solar energy here swings from a low near 0.33 kWh/m² to a high of 5.86 kWh/m² in June across the year — August's 4.39 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.4Bright
164.4Bright
174.3Bright
184.3Bright
194.2Bright
204.2Bright
214.2Bright
224.1Bright
234.0Bright
244.0Bright
254.0Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.8Moderate
303.7Moderate
313.7Moderate
Planning a trip in August

Is August a good time to visit Karlskrona?

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

6.1
Sightseeing
2nd-best month of the year
3.0
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Karlskrona for sightseeing.

What to pack for Karlskrona in August

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

In August, Karlskrona sees daytime highs around 20°C and nights near 14°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Karlskrona in August

The nearest coast averages about 18°C in August — 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 18°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°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr5Bracing
May8Bracing
Jun13Bracing
Jul17Cool
Aug18Cool
Sep15Cool
Oct12Bracing
Nov8Bracing
Dec6Bracing

UV index in Karlskrona in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Karlskrona peaks around June 18 at about 5 (high) — a little sun protection helps at midday. 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 5Dec 20UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5Moderate
Jun5High
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Karlskrona?

Karlskrona sits at 56.2°N, 15.6°E, 18 m above sea level, in Sweden. The nearest listed city is Karlshamn, 45 km away.

VäxjöHässleholmLjungbyOskarshamnYstad

Topography around Karlskrona

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

Within 3 km, the terrain around Karlskrona has only modest variations in elevation — a maximum elevation change of 36 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 124 m; within 80 km, significant variations in elevation — a maximum elevation change of 276 m.

The land around Karlskrona is covered by water (76%) within 3 km, water (42%) and trees (40%) within 16 km, and water (47%) and trees (43%) within 80 km.

3 km
36 m
16 km
124 m
80 km
276 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Karlshamn 45 km · Kalmar 73 km · Kristianstad 90 km · Växjö 93 km · Hässleholm 113 km · Ljungby 126 km · Oskarshamn 133 km · Ystad 137 km

Sweden travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 87% of US
price level, 2025
GDP per capita
$63,133
2025
Happiness
7.3 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2023
Road deaths
3.1
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 609
Religion
Church of Sweden 54%none or unspecified 37%other 9%

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 Karlskrona (56.1616°, 15.5866°, 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).