Kalmar weather in August

In August, Kalmar sees average daytime highs of 21°C and overnight lows near 13°C, with 59 mm of rain across 10.6 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 22°C in the first days to 19°C by the end. The sky is clear or mostly clear about 22% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 hours at the start of August to 13 h 48 min by month's end. Set against the rest of the year, August is Kalmar's 5th-clearest and 11th-windiest month. For the whole year in context, see Kalmar's year-round climate.

Daytime high
21°
2nd warmest
Overnight low
13°
11th coldest
Rainfall
59 mm
10.6 wet days
Daylight
14 h 54 min
4:31 AM – 7:27 PM
Cloud cover
62%
5th clearest
Wind
13 km/h
11th windiest
Solar energy
4.38 kWh/m²
Travel score
6.3
out of 10

Kalmar is city in Kalmar Municipality, Sweden.

Founded
1100

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 22°C in the first days to 19°C by the end.

A typical August day in Kalmar 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, August runs on par with July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12214
22214
32214
42214
52214
62214
72214
82214
92214
102214
112114
122114
132113
142113
152113
162113
172113
182113
192113
202113
212013
222013
232013
242013
252012
262012
272012
281912
291912
301912
311912

How August really feels in Kalmar

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.

Kalmar 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 / -2°369.25.37.20.0
Feb / -2°348.46.39.10.0
Mar / -1°297.6311.40.3
Apr10° / 287.2113.92.3
May15° / 459.7016.14.5
Jun19° / 11°5310.4017.45.9
Jul21° / 13°6610.3016.96.5
Aug21° / 13°5910.6014.96.3
Sep17° / 10°458.9012.55.3
Oct11° / 509.60.1102.8
Nov / 5211.11.87.80.6
Dec / -0°4410.146.60.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24654
34654
44555
54555
64555
74456
84555
94456
104456
114357
124357
134357
144357
154258
164258
174258
184258
194159
204159
214159
224060
234060
244060
254060
264159
274159
284159
294258
304258
314258

Chance of precipitation in August

Any precipitation

Kalmar gets around 59 mm of rain over 10.6 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 34% and peaks near 38% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
232
331
431
531
631
731
831
931
1031
1131
1231
1331
1432
1532
1633
1733
1834
1934
2035
2136
2236
2337
2437
2538
2638
2738
2838
2937
3037
3137

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14239163
24239163
34339163
44338163
54338162
64438162
74438152
84539152
94539152
104539151
114639141
124639141
134639141
144739141
154739131
164839131
174839131
184938121
194938120
205038120
215137120
225237110
235336110
245435110
255634100
265832100
27603190
28613090
29632980
30652780
31672670

Wind in August

Winds average 13 km/h in August.

Across August, daily wind ranges from about 12 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
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light 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
3014light breeze
3114light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 hours at the start of August to 13 h 48 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 4:00 AM to 5:02 AM, and sunset from 8:01 PM to 6:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.04:008:01
215.94:027:59
315.94:047:57
415.84:067:55
515.74:087:52
615.74:107:50
715.64:127:48
815.54:147:46
915.54:167:43
1015.44:187:41
1115.34:207:39
1215.24:227:36
1315.24:247:34
1415.14:267:32
1515.04:287:29
1614.94:317:27
1714.94:337:24
1814.84:357:22
1914.74:377:19
2014.64:397:17
2114.64:417:14
2214.54:437:12
2314.44:457:09
2414.34:477:06
2514.24:497:04
2614.24:517:01
2714.14:536:58
2814.04:556:56
2913.94:576:53
3013.85:006:50
3113.85:026:48

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.38 kWh/m².

For context, solar energy here swings from a low near 0.31 kWh/m² to a high of 5.88 kWh/m² in June across the year — August's 4.38 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
214.1Bright
224.1Bright
234.0Bright
244.0Moderate
253.9Moderate
263.9Moderate
273.8Moderate
283.8Moderate
293.7Moderate
303.7Moderate
313.6Moderate
Planning a trip in August

Is August a good time to visit Kalmar?

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

6.3
Sightseeing
2nd-best month of the year
3.7
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Kalmar for sightseeing.

What to pack for Kalmar in August

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

In August, Kalmar sees daytime highs around 21°C and nights near 13°C. Worth packing: rain gear. About 11 days see rain.

rain gear

Sea temperature near Kalmar 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
Jan3Bracing
Feb3Bracing
Mar3Bracing
Apr4Bracing
May8Bracing
Jun13Bracing
Jul16Cool
Aug18Cool
Sep15Bracing
Oct11Bracing
Nov8Bracing
Dec5Bracing

UV index in Kalmar 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 Kalmar 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
Mar2Low
Apr3Moderate
May5Moderate
Jun6High
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Kalmar?

Kalmar sits at 56.7°N, 16.4°E, 7 m above sea level, in Sweden. The nearest listed city is Oskarshamn, 67 km away.

KarlshamnVästervikLjungbyNässjöVärnamo

Topography around Kalmar

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

Within 3 km, the terrain around Kalmar has only modest variations in elevation — a maximum elevation change of 22 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, significant variations in elevation — a maximum elevation change of 306 m.

The land around Kalmar is covered by water (59%) and artificial surfaces (20%) within 3 km, water (34%), trees (26%) and grassland (22%) within 16 km, and trees (48%) and water (40%) within 80 km.

3 km
22 m
16 km
67 m
80 km
306 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Oskarshamn 67 km · Karlskrona 73 km · Växjö 98 km · Karlshamn 107 km · Västervik 123 km · Ljungby 149 km · Nässjö 149 km · Värnamo 152 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 Kalmar (56.6616°, 16.3616°, elevation 7 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).