Uddevalla weather in August

In August, Uddevalla sees average daytime highs of 20°C and overnight lows near 12°C, with 105 mm of rain across 14.1 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 19°C by the end. The sky is clear or mostly clear about 24% 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 Uddevalla's 5th-clearest and 11th-windiest month. For the whole year in context, see Uddevalla's year-round climate.

Daytime high
20°
2nd warmest
Overnight low
12°
11th coldest
Rainfall
105 mm
14.1 wet days
Daylight
15 h 06 min
4:42 AM – 7:51 PM
Cloud cover
64%
5th clearest
Wind
11 km/h
11th windiest
Solar energy
4.23 kWh/m²
Travel score
5.7
out of 10

Uddevalla is urban area in Uddevalla Municipality, Sweden.

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 19°C by the end.

A typical August day in Uddevalla 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 on par with 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
132112
142112
152112
162012
172012
182012
192012
202012
212012
222012
232011
241911
251911
261911
271911
281911
291911
301811
311810

How August really feels in Uddevalla

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.

Uddevalla 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°6711.85.96.80.0
Feb / -3°509.45.58.90.0
Mar / -1°479.14.111.40.4
Apr11° / 539.51.1142.6
May16° / 7011.40.116.44.7
Jun19° / 10°10013.2017.85.5
Jul21° / 12°9812.9017.26.1
Aug20° / 12°10514.1015.15.7
Sep16° / 8311.9012.54.7
Oct11° / 8413.40.59.92.3
Nov / 6512.42.17.50.4
Dec / -1°70124.66.20.0

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 19% of August, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14654
24555
34555
44456
54456
64456
74456
84456
94456
104456
114456
124357
134456
144456
154456
164456
174456
184555
194456
204456
214456
224258
234258
244258
254159
264060
274060
283961
293862
303961
313961

Chance of precipitation in August

Any precipitation

Uddevalla gets around 105 mm of rain over 14.1 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 45% and peaks near 47% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
142
243
343
443
544
644
744
844
945
1045
1145
1245
1345
1445
1545
1645
1745
1845
1945
2045
2146
2246
2346
2446
2547
2647
2747
2846
2946
3046
3145

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 57% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1454411
2454410
3454410
4454410
5464410
647449
747439
848439
949429
1050428
1151418
1252408
1352408
1453398
1554388
1655378
1756368
1857358
1959347
2060337
2161327
2262317
2363307
2465296
2567276
2668266
2770255
2871245
2973234
3074224
3175214

Wind in August

Winds average 11 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
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3012calm
3112calm

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 4:09 AM to 5:16 AM, and sunset from 8:27 PM to 7:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.34:098:27
216.24:118:25
316.24:138:23
416.14:168:21
516.04:188:18
615.94:208:16
715.94:228:14
815.84:248:11
915.74:268:09
1015.64:298:06
1115.54:318:04
1215.54:338:01
1315.44:357:59
1415.34:377:56
1515.24:407:53
1615.14:427:51
1715.14:447:48
1815.04:467:45
1914.94:497:43
2014.84:517:40
2114.74:537:37
2214.64:557:34
2314.64:587:32
2414.55:007:29
2514.45:027:26
2614.35:047:23
2714.25:077:20
2814.15:097:18
2914.15:117:15
3014.05:137:12
3113.95:167:09

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.23 kWh/m².

For context, solar energy here swings from a low near 0.25 kWh/m² to a high of 5.8 kWh/m² in June across the year — August's 4.23 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
124.4Bright
134.4Bright
144.3Bright
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 Uddevalla?

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

5.7
Sightseeing
2nd-best month of the year
3.1
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Uddevalla for sightseeing.

What to pack for Uddevalla in August

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

In August, Uddevalla sees daytime highs around 20°C and nights near 12°C. Pack rain gear. About 14 days see rain.

rain gear

Sea temperature near Uddevalla 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 41 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 Uddevalla 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 Uddevalla 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
Aug5Moderate
Sep3Moderate
Oct1Low
Nov1Low
Dec0Low
Location & terrain

Where is Uddevalla?

Uddevalla sits at 58.3°N, 11.9°E, 13 m above sea level, in Sweden. The nearest listed city is Trollhättan, 21 km away.

Topography around Uddevalla

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

Within 3 km, the terrain around Uddevalla has only modest variations in elevation — a maximum elevation change of 139 m around an average of 60 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 187 m; within 80 km, significant variations in elevation — a maximum elevation change of 278 m.

The land around Uddevalla is covered by trees (62%) and artificial surfaces (21%) within 3 km, trees (68%) within 16 km, and trees (47%) and water (34%) within 80 km.

3 km
139 m
16 km
187 m
80 km
278 m
treesgrasslandcroplandartificial surfaceswaterwetland
August weather nearby: Trollhättan 21 km · Vänersborg 23 km · Kungälv 53 km · Alingsås 58 km · Björlanda 65 km · Lerum 67 km · Partille 68 km · Gothenburg 71 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 Uddevalla (58.3478°, 11.9424°, elevation 13 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).