Arouca weather in August

In August, Arouca sees average daytime highs of 26°C and overnight lows near 15°C, with 38 mm of rain across 5.3 wet days and about 13.6 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 12 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Arouca's 2nd-clearest and 11th-windiest month. For the whole year in context, see Arouca's year-round climate.

Daytime high
26°
1st warmest
Overnight low
15°
12th coldest
Rainfall
38 mm
5.3 wet days
Daylight
13 h 36 min
5:48 AM – 7:26 PM
Cloud cover
31%
2nd clearest
Wind
8 km/h
11th windiest
Solar energy
6.44 kWh/m²
Travel score
7.9
out of 10

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 Arouca reaches about 26°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 32°C. Set against its neighbours, August runs on par with July and about 3°C warmer than September.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12715
22715
32715
42715
52715
62715
72715
82715
92715
102715
112615
122615
132615
142615
152615
162615
172615
182615
192615
202615
212615
222615
232615
242615
252615
262615
272615
282615
292515
302515
312514

Arouca 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
Jan11° / 18212.59.42.7
Feb13° / 1249.910.43.5
Mar16° / 14211.711.74.6
Apr17° / 14813.713.15.0
May20° / 10°12913.114.35.9
Jun23° / 13°567.914.97.3
Jul26° / 15°30514.68.1
Aug26° / 15°385.313.67.9
Sep23° / 13°838.212.37.3
Oct19° / 11°19713.410.95.7
Nov14° / 18313.19.73.9
Dec12° / 19712.59.12.9

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 (%)
18119
28020
38020
48020
58020
68020
77921
87921
97921
107822
117723
127723
137723
147624
157624
167624
177624
187624
197624
207624
217624
227624
237624
247624
257624
267624
277624
287624
297624
307624
317624

Chance of precipitation in August

Any precipitation

Arouca gets around 38 mm of rain over 5.3 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 17% and peaks near 21% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
114
214
314
415
515
615
715
815
915
1015
1115
1215
1315
1416
1516
1616
1717
1817
1917
2018
2118
2219
2319
2419
2520
2620
2720
2820
2920
3021
3121

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 48% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12250281
22349271
32448271
42548261
52648261
62747251
72747251
82847241
92847241
102847241
112847241
122847241
132848241
142848231
152749231
162749230
172749240
182749240
192649240
202749240
212749240
222748240
232848240
242948230
253048220
263148210
273247210
283347200
293447190
303547190
313646180

Wind in August

Winds average 8 km/h in August.

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

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 12 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 72 minutes over August. Sunrise moves from 5:33 AM to 6:03 AM, and sunset from 7:45 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:337:45
214.25:347:44
314.15:357:43
414.15:367:42
514.15:377:41
614.05:387:40
714.05:397:38
814.05:407:37
913.95:417:36
1013.95:427:35
1113.85:437:33
1213.85:447:32
1313.85:457:31
1413.75:467:29
1513.75:477:28
1613.65:487:26
1713.65:497:25
1813.65:507:24
1913.55:517:22
2013.55:527:21
2113.45:537:19
2213.45:547:18
2313.45:557:16
2413.35:567:14
2513.35:577:13
2613.25:587:11
2713.25:597:10
2813.16:007:08
2913.16:017:06
3013.06:027:05
3113.06:037:03

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 1.65 kWh/m² to a high of 7.22 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
66.8Intense
76.8Intense
86.8Intense
96.7Intense
106.7Intense
116.7Intense
126.6Intense
136.6Intense
146.5Intense
156.5Intense
166.4Intense
176.4Intense
186.4Intense
196.3Intense
206.3Intense
216.2Intense
226.2Intense
236.1Intense
246.1Intense
256.1Intense
266.0Intense
276.0Bright
285.9Bright
295.9Bright
305.8Bright
315.8Bright
Planning a trip in August

Hazard calendar for Arouca

In seasonPeak

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

Arouca'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 Arouca?

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

7.9
Sightseeing
2nd-best month of the year
7.6
Beach & pool
1st-best month of the year

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

What to pack for Arouca in August

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

In August, Arouca sees daytime highs around 26°C and nights near 15°C. Pack sun protection. Worth having: light clothes. About 5 days see rain.

sun protectionlight clothes

Sea temperature near Arouca 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 39 km away) is warmest in September 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
May16Cool
Jun17Cool
Jul17Cool
Aug17Cool
Sep17Cool
Oct17Cool
Nov16Cool
Dec14Bracing

UV index in Arouca 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 Arouca peaks around July 12 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 12UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5High
Apr6High
May7High
Jun9Very high
Jul9Very high
Aug8Very high
Sep5High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Arouca 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 Arouca 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 Arouca?

Arouca sits at 40.9°N, 8.2°W, 313 m above sea level, in Portugal. The nearest listed city is São João da Madeira, 21 km away.

Topography around Arouca

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

Within 3 km, the terrain around Arouca has significant variations in elevation — a maximum elevation change of 542 m around an average of 452 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,202 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,714 m.

The land around Arouca is covered by trees (65%) and grassland (27%) within 3 km, trees (62%) and grassland (34%) within 16 km, and trees (42%) and grassland (33%) within 80 km.

3 km
542 m
16 km
1,202 m
80 km
1,714 m
treesshrubsgrasslandcroplandartificial surfaceswater
August weather nearby: São João da Madeira 21 km · Feira 25 km · Baião 31 km · Paredes 31 km · São Pedro da Cova 32 km · Ovar 33 km · Gondomar 34 km · Espinho 34 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 Arouca (40.9306°, -8.2449°, elevation 313 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).