Sønderborg weather in July

In July, Sønderborg sees average daytime highs of 21°C and overnight lows near 14°C, with 63 mm of rain across 12.1 wet days and about 16.5 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 22°C by the end. The sky is clear or mostly clear about 21% of the time in July, and the air most often feels dry.

Daylight stretches from about 17 hours at the start of July to 15 h 48 min by month's end. Set against the rest of the year, July is Sønderborg's 3rd-clearest and 11th-windiest month. For the whole year in context, see Sønderborg's year-round climate.

Daytime high
21°
1st warmest
Overnight low
14°
11th coldest
Rainfall
63 mm
12.1 wet days
Daylight
16 h 36 min
4:10 AM – 8:43 PM
Cloud cover
64%
3rd clearest
Wind
15 km/h
11th windiest
Solar energy
5.34 kWh/m²
Travel score
6.1
out of 10

Sønderborg is town in Denmark.

Density
2,072/km²
people per km²
Founded
1256

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

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 22°C by the end.

A typical July day in Sønderborg reaches about 21°C in the afternoon and slips back to 14°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°C. Set against its neighbours, July runs about 3°C warmer than June and on par with August.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12013
22013
32013
42013
52013
62013
72013
82013
92113
102113
112113
122113
132113
142114
152114
162114
172114
182114
192114
202114
212114
222214
232214
242214
252214
262214
272214
282214
292214
302214
312214

How July really feels in Sønderborg

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.

Sønderborg weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 5611.637.60.0
Feb / 439.53.29.30.0
Mar / 4610.11.811.40.7
Apr11° / 399.30.313.82.7
May15° / 5110.3015.84.7
Jun19° / 11°6111.40175.7
Jul21° / 14°6312.1016.56.1
Aug21° / 14°6711.8014.76.1
Sep17° / 11°5510.2012.55.2
Oct12° / 5811.9010.23.1
Nov / 5111.10.68.11.1
Dec / 5611.62.170.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 17% of July, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33961
43961
53862
63862
73862
83763
93862
103862
113763
123763
133763
143763
153763
163763
173862
183862
193862
203862
213862
223862
233862
243862
253862
263862
273961
283961
293961
304060
314060

Chance of precipitation in July

Any precipitation

Sønderborg gets around 63 mm of rain over 12.1 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
239
339
439
539
639
739
838
938
1038
1137
1237
1337
1437
1537
1637
1737
1838
1938
2038
2138
2239
2339
2440
2540
2640
2740
2840
2939
3039
3139

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 52% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1672760
2662860
3652870
4642970
5642970
6623080
7623080
8623080
9613180
10613180
11593290
12583390
13583390
14573490
15563590
165436100
175337100
185238100
194939111
204740121
214641121
224442131
234243141
244144141
254044152
263845152
273845152
283746162
293646162
303646162
313547162

Wind in July

Winds average 15 km/h in July.

Across July, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light 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
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in July

DaylightNight

Daylight runs from about 17 hours at the start of July to 15 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over July. Sunrise moves from 3:54 AM to 4:33 AM, and sunset from 8:54 PM to 8:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
117.03:548:54
217.03:558:54
317.03:558:54
417.03:568:53
516.93:578:53
616.93:588:52
716.93:598:52
816.84:008:51
916.84:018:50
1016.84:028:49
1116.84:038:48
1216.74:058:47
1316.74:068:47
1416.64:078:45
1516.64:088:44
1616.64:108:43
1716.54:118:42
1816.54:128:41
1916.44:148:40
2016.44:158:38
2116.34:178:37
2216.34:188:35
2316.24:208:34
2416.24:228:32
2516.14:238:31
2616.14:258:29
2716.04:278:28
2816.04:288:26
2915.94:308:24
3015.84:328:22
3115.84:338:21

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.34 kWh/m².

For context, solar energy here swings from a low near 0.4 kWh/m² to a high of 5.62 kWh/m² in June across the year — July's 5.34 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.1Bright
285.1Bright
295.1Bright
305.0Bright
315.0Bright
Planning a trip in July

Is July a good time to visit Sønderborg?

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

6.1
Sightseeing
1st-best month of the year
3.7
Beach & pool
1st-best month of the year

July is a reasonable time to visit Sønderborg for sightseeing.

What to pack for Sønderborg in July

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

In July, Sønderborg sees daytime highs around 21°C and nights near 14°C. Worth packing: rain gear and sun protection. About 12 days see rain.

rain gearsun protection

Sea temperature near Sønderborg in July

The nearest coast averages about 18°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 22 km away) is warmest in August at about 19°C and coldest in February near 2°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
Jan3Bracing
Feb2Bracing
Mar3Bracing
Apr5Bracing
May11Bracing
Jun15Cool
Jul18Cool
Aug19Cool
Sep16Cool
Oct12Bracing
Nov9Bracing
Dec4Bracing

UV index in Sønderborg in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 Sønderborg peaks around July 17 at about 5 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 17UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5High
Jun5High
Jul5High
Aug5High
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Sønderborg?

Sønderborg sits at 54.9°N, 9.8°E, 15 m above sea level, in Denmark. The nearest listed city is Flensburg, 26 km away.

FlensburgAabenraaHaderslevSchleswigEckernfördeSvendborgTønderOdense

Topography around Sønderborg

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

Within 3 km, the terrain around Sønderborg has only modest variations in elevation — a maximum elevation change of 66 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 92 m; within 80 km, only modest variations in elevation — a maximum elevation change of 147 m.

The land around Sønderborg is covered by water (31%), grassland (23%) and artificial surfaces (22%) within 3 km, water (39%) and cropland (34%) within 16 km, and cropland (35%) and water (33%) within 80 km.

3 km
66 m
16 km
92 m
80 km
147 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Flensburg 26 km · Aabenraa 28 km · Haderslev 42 km · Schleswig 46 km · Eckernförde 49 km · Svendborg 55 km · Tønder 59 km · Odense 66 km

Denmark travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E / F / K
230 V · 50 Hz
Prices
≈ 92% of US
price level, 2025
GDP per capita
$76,970
2025
Happiness
7.5 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
3.7
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 611
Religion
Evangelical Lutheran 71%other/none/unspecified 24%Muslim 4%

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 Sønderborg (54.909°, 9.7892°, elevation 15 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).