Barcelos weather in August

In August, Barcelos sees average daytime highs of 26°C and overnight lows near 16°C, with 39 mm of rain across 4.8 wet days and about 13.7 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 65% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 14 h 18 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Barcelos's 2nd-clearest and 11th-windiest month. For the whole year in context, see Barcelos's year-round climate.

Daytime high
26°
1st warmest
Overnight low
16°
12th coldest
Rainfall
39 mm
4.8 wet days
Daylight
13 h 42 min
5:48 AM – 7:29 PM
Cloud cover
31%
2nd clearest
Wind
9 km/h
11th windiest
Solar energy
6.44 kWh/m²
Travel score
8.0
out of 10

Barcelos is city seat of Barcelos municipality.

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical August day in Barcelos reaches about 26°C in the afternoon and slips back to 16°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 32°C. Set against its neighbours, August runs on par with July and about 2°C warmer than September.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12716
22716
32716
42716
52716
62716
72716
82716
92716
102716
112716
122716
132716
142616
152616
162616
172616
182616
192616
202616
212616
222616
232616
242616
252616
262616
272616
282616
292616
302616
312616

Barcelos weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan13° / 19112.59.33.4
Feb14° / 1259.810.34.2
Mar17° / 14710.611.75.3
Apr18° / 14212.413.15.6
May20° / 12°12111.314.36.3
Jun24° / 14°486.614.97.7
Jul26° / 16°284.214.78.1
Aug26° / 16°394.813.78.0
Sep24° / 14°796.812.37.6
Oct20° / 12°2101310.95.9
Nov16° / 20013.29.74.5
Dec13° / 20513.193.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 23%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38119
48020
58020
68020
78020
87921
97822
107822
117723
127723
137723
147723
157624
167624
177525
187525
197525
207525
217525
227525
237525
247525
257624
267624
277624
287624
297624
307525
317525

Chance of precipitation in August

Any precipitation

Barcelos gets around 39 mm of rain over 4.8 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 15% and peaks near 17% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
113
213
313
414
514
614
714
814
914
1014
1115
1215
1315
1415
1515
1615
1715
1815
1915
2016
2116
2216
2317
2417
2517
2617
2717
2817
2917
3017
3117

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 41% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11442413
21542403
31642394
41742384
51742374
61841373
71941373
81941373
91941373
102040373
112040373
122040383
131940383
141940383
151940393
161940392
171940392
181940392
191840402
201840402
211840392
221940392
231940382
242040382
252141372
262141362
272241352
282342342
292342332
302442331
312442321

Wind in August

Winds average 9 km/h in August.

Across August, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 18 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 5:33 AM to 6:04 AM, and sunset from 7:48 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.35:337:48
214.25:347:47
314.25:357:46
414.25:367:45
514.15:377:44
614.15:387:43
714.05:397:41
814.05:407:40
914.05:417:39
1013.95:427:37
1113.95:437:36
1213.85:447:35
1313.85:457:33
1413.85:467:32
1513.75:477:31
1613.75:487:29
1713.65:497:28
1813.65:507:26
1913.65:517:25
2013.55:527:23
2113.55:537:22
2213.45:547:20
2313.45:557:18
2413.35:567:17
2513.35:587:15
2613.25:597:14
2713.26:007:12
2813.26:017:10
2913.16:027:09
3013.16:037:07
3113.06:047:05

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.44 kWh/m².

For context, solar energy here swings from a low near 1.61 kWh/m² to a high of 7.3 kWh/m² in July across the year — August's 6.44 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.0Intense
27.0Intense
37.0Intense
46.9Intense
56.9Intense
66.9Intense
76.8Intense
86.8Intense
96.7Intense
106.7Intense
116.7Intense
126.6Intense
136.6Intense
146.5Intense
156.5Intense
166.4Intense
176.4Intense
186.3Intense
196.3Intense
206.3Intense
216.2Intense
226.2Intense
236.1Intense
246.1Intense
256.0Intense
266.0Intense
276.0Bright
285.9Bright
295.9Bright
305.8Bright
315.8Bright
Planning a trip in August

Hazard calendar for Barcelos

In seasonPeak

None of Barcelos's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Barcelos's rainy season runs October–May, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Barcelos?

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

8.0
Sightseeing
2nd-best month of the year
7.7
Beach & pool
2nd-best month of the year

August is one of the better times to visit Barcelos for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Barcelos in August

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

In August, Barcelos sees daytime highs around 26°C and nights near 16°C. Pack sun protection. Worth having: light clothes. About 5 days see rain.

sun protectionlight clothes

Sea temperature near Barcelos in August

The nearest coast averages about 17°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 24 km away) is warmest in August at about 17°C and coldest in February near 13°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

12°14°16°18°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar14Bracing
Apr14Bracing
May15Cool
Jun17Cool
Jul17Cool
Aug17Cool
Sep17Cool
Oct17Cool
Nov16Cool
Dec15Bracing

UV index in Barcelos in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Barcelos peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7High
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Moderate
Dec2Low

Air quality in Barcelos in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Barcelos is worst in August — around 25 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (November, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodAug 2425 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar14Moderate
Apr12Moderate
May8Good
Jun9Good
Jul9Good
Aug25Moderate
Sep24Moderate
Oct18Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Barcelos?

Barcelos sits at 41.5°N, 8.6°W, 36 m above sea level, in Portugal. The nearest listed city is Esposende, 14 km away.

Topography around Barcelos

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

Within 3 km, the terrain around Barcelos has only modest variations in elevation — a maximum elevation change of 226 m around an average of 54 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 484 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,517 m.

The land around Barcelos is covered by trees (31%), artificial surfaces (27%) and grassland (22%) within 3 km, trees (47%) within 16 km, and trees (40%), grassland (27%) and water (26%) within 80 km.

3 km
226 m
16 km
484 m
80 km
1,517 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Esposende 14 km · Braga 16 km · Pedroso 17 km · Bairro Novo 18 km · Póvoa de Varzim 20 km · Bougado 22 km · Trofa 22 km · Vila do Conde 22 km

Portugal travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E / F
230 V · 50 Hz
Prices
≈ 60% of US
price level, 2025
GDP per capita
$32,082
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
95%
of population, 2024
Homicide rate
0.7
per 100k, 2022
Road deaths
8.2
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 612
Religion
Catholic 68%not applicable 13%no religion 12%no response 2%

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 Barcelos (41.5317°, -8.6184°, elevation 36 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).