Vänersborg weather in August

In August, Vänersborg sees average daytime highs of 20°C and overnight lows near 12°C, with 88 mm of rain across 13.5 wet days and about 15.1 hours of daylight. It is the 2nd-warmest and 1st-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 22% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 h 18 min at the start of August to 13 h 54 min by month's end. Set against the rest of the year, August is Vänersborg's 5th-clearest and 11th-windiest month. For the whole year in context, see Vänersborg's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
12°
11th coldest
Rainfall
88 mm
13.5 wet days
Daylight
15 h 06 min
4:40 AM – 7:49 PM
Cloud cover
65%
5th clearest
Wind
12 km/h
11th windiest
Solar energy
4.24 kWh/m²
Travel score
5.8
out of 10

Vänersborg is urban area in Vänersborg Municipality, Sweden.

Founded
1641

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 Vänersborg reaches about 20°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 25°C. Set against its neighbours, August runs about 1°C cooler than July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12113
22113
32113
42113
52113
62113
72113
82113
92113
102113
112113
122113
132013
142012
152012
162012
172012
182012
192012
202012
212012
221912
231912
241911
251911
261911
271911
281811
291811
301811
311811

How August really feels in Vänersborg

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.

Vänersborg weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°5911.36.76.80.0
Feb / -3°468.868.90.0
Mar / -1°438.84.611.40.3
Apr10° / 499.11.4142.4
May15° / 6011.20.116.44.6
Jun19° / 10°8713.1017.85.5
Jul21° / 13°8512.2017.36.1
Aug20° / 12°8813.5015.15.8
Sep16° / 7311.2012.54.6
Oct10° / 7412.30.59.92.2
Nov / 6111.937.50.3
Dec / -2°6311.75.36.20.0

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 20% of August, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24654
34654
44555
54555
64555
74555
84456
94456
104456
114456
124456
134555
144456
154456
164456
174456
184357
194258
204159
214159
224060
233961
243961
253961
263862
273862
283862
293862
303763
313763

Chance of precipitation in August

Any precipitation

Vänersborg gets around 88 mm of rain over 13.5 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 43% and peaks near 45% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
140
240
341
441
541
642
742
842
942
1042
1142
1243
1343
1443
1543
1643
1743
1844
1944
2044
2144
2244
2345
2445
2545
2645
2744
2844
2944
3044
3143

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 59% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1474211
2474211
3474310
4474310
547439
648439
748439
849438
950428
1050428
1152417
1252417
1353407
1454397
1555387
1656377
1759356
1860346
1961336
2062326
2163316
2265296
2366286
2468275
2570255
2671245
2772235
2875214
2976204
3077194
3178184

Wind in August

Winds average 12 km/h in August.

Across August, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012light breeze
3112light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 18 min at the start of August to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 144 minutes over August. Sunrise moves from 4:07 AM to 5:14 AM, and sunset from 8:26 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.34:078:26
216.24:108:24
316.24:128:22
416.14:148:19
516.04:168:17
615.94:188:15
715.94:208:12
815.84:238:10
915.74:258:07
1015.64:278:05
1115.64:298:02
1215.54:318:00
1315.44:347:57
1415.34:367:55
1515.24:387:52
1615.14:407:49
1715.14:437:47
1815.04:457:44
1914.94:477:41
2014.84:497:39
2114.74:527:36
2214.74:547:33
2314.64:567:30
2414.54:587:27
2514.45:017:25
2614.35:037:22
2714.25:057:19
2814.15:077:16
2914.15:107:13
3014.05:127:10
3113.95:147:07

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.24 kWh/m².

For context, solar energy here swings from a low near 0.24 kWh/m² to a high of 5.8 kWh/m² in June across the year — August's 4.24 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.4Bright
144.4Bright
154.3Bright
164.3Bright
174.2Bright
184.2Bright
194.1Bright
204.1Bright
214.0Bright
224.0Moderate
233.9Moderate
243.8Moderate
253.8Moderate
263.7Moderate
273.7Moderate
283.6Moderate
293.6Moderate
303.5Moderate
313.5Moderate
Planning a trip in August

Is August a good time to visit Vänersborg?

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

5.8
Sightseeing
2nd-best month of the year
3.0
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Vänersborg for sightseeing.

What to pack for Vänersborg in August

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

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

rain gear

Sea temperature near Vänersborg 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 at the nearest coast (about 62 km away) 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
Apr6Bracing
May11Bracing
Jun15Bracing
Jul17Cool
Aug18Cool
Sep15Cool
Oct12Bracing
Nov9Bracing
Dec6Bracing

UV index in Vänersborg in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Vänersborg peaks around June 17 at about 5 (moderate) — 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 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 17UV 5Dec 20UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May5Moderate
Jun5Moderate
Jul5Moderate
Aug4Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Vänersborg?

Vänersborg sits at 58.4°N, 12.3°E, 54 m above sea level, in Sweden. The nearest listed city is Trollhättan, 11 km away.

Topography around Vänersborg

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

Within 3 km, the terrain around Vänersborg has only modest variations in elevation — a maximum elevation change of 60 m around an average of 56 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 156 m; within 80 km, significant variations in elevation — a maximum elevation change of 343 m.

The land around Vänersborg is covered by trees (42%) and water (35%) within 3 km, trees (47%) and water (20%) within 16 km, and trees (50%) and water (28%) within 80 km.

3 km
60 m
16 km
156 m
80 km
343 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Trollhättan 11 km · Uddevalla 23 km · Lidköping 50 km · Alingsås 52 km · Kungälv 60 km · Lerum 68 km · Partille 72 km · Björlanda 74 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 Vänersborg (58.3807°, 12.3234°, elevation 54 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).