Chaves weather in August

In August, Chaves sees average daytime highs of 27°C and overnight lows near 14°C, with 19 mm of rain across 4 wet days and about 13.7 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 26°C by the end. The sky is clear or mostly clear about 65% of the time in August, and the air most often feels dry.

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 Chaves's 2nd-clearest and 9th-windiest month. For the whole year in context, see Chaves's year-round climate.

Daytime high
27°
1st warmest
Overnight low
14°
12th coldest
Rainfall
19 mm
4 wet days
Daylight
13 h 42 min
5:43 AM – 7:25 PM
Cloud cover
31%
2nd clearest
Wind
8 km/h
9th windiest
Solar energy
6.44 kWh/m²
Travel score
8.0
out of 10

Chaves is human settlement in Portugal.

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 27°C in the first days to 26°C by the end.

A typical August day in Chaves reaches about 27°C in the afternoon and slips back to 14°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 31°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12714
22714
32714
42714
52714
62714
72714
82714
92714
102714
112714
122714
132714
142714
152714
162714
172714
182714
192714
202714
212614
222614
232614
242614
252614
262614
272613
282613
292613
302613
312613

Chaves 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 daysSnow daysDaylight (hours)Travel score
Jan / 879.619.31.9
Feb11° / 597.50.910.32.8
Mar14° / 749.20.111.74.2
Apr16° / 7310.9013.14.8
May19° / 6810.1014.36.1
Jun23° / 12°335.50157.8
Jul27° / 14°183.4014.78.2
Aug27° / 14°194013.78.0
Sep23° / 12°425.9012.37.7
Oct18° / 11010.2010.95.6
Nov12° / 9010.80.19.63.3
Dec10° / 979.30.492.1

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 14% of August, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18515
28416
38317
48317
58317
68218
78218
88119
98020
108020
118020
128020
137921
147921
157921
167822
177822
187822
197822
207723
217723
227723
237723
247723
257723
267723
277723
287723
297723
307723
317624

Chance of precipitation in August

Any precipitation

Chaves gets around 19 mm of rain over 4 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 13% and peaks near 16% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
110
211
311
411
511
611
711
811
911
1012
1112
1212
1312
1412
1512
1612
1712
1813
1913
2014
2114
2214
2315
2415
2515
2615
2716
2816
2916
3016
3116

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 67% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
160373
261363
362353
463343
564333
665323
765323
866313
966313
1067303
1167303
1267303
1367303
1468302
1568302
1668302
1768302
1868302
1967303
2066313
2167303
2267303
2367303
2468302
2569292
2669292
2770282
2871272
2971272
3072262
3173261

Wind in August

Winds average 8 km/h in August.

Across August, daily wind ranges from about 7 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
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 5:28 AM to 5:59 AM, and sunset from 7:44 PM to 7:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.35:287:44
214.25:297:43
314.25:307:42
414.25:317:41
514.15:327:40
614.15:337:38
714.15:347:37
814.05:357:36
914.05:367:35
1013.95:377:33
1113.95:387:32
1213.95:397:31
1313.85:407:29
1413.85:417:28
1513.75:427:26
1613.75:437:25
1713.75:447:23
1813.65:457:22
1913.65:467:20
2013.55:477:19
2113.55:487:17
2213.45:497:16
2313.45:517:14
2413.35:527:12
2513.35:537:11
2613.35:547:09
2713.25:557:08
2813.25:567:06
2913.15:577:04
3013.15:587:03
3113.05:597:01

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 1.49 kWh/m² to a high of 7.27 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
266.0Bright
275.9Bright
285.9Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in August

Is August a good time to visit Chaves?

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
7.9
Beach & pool
2nd-best month of the year

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

What to pack for Chaves in August

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

In August, Chaves sees daytime highs around 27°C and nights near 14°C. Pack sun protection. Worth having: light clothes. About 4 days see rain.

sun protectionlight clothes

UV index in Chaves in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chaves peaks around July 12 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 19UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May7High
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct5Moderate
Nov2Moderate
Dec2Low

Air quality in Chaves 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 Chaves is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 2017 µg/m³Nov 237 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar14Moderate
Apr12Good
May8Good
Jun9Good
Jul18Moderate
Aug14Moderate
Sep18Moderate
Oct14Moderate
Nov7Good
Dec7Good
Location & terrain

Where is Chaves?

Chaves sits at 41.7°N, 7.5°W, 362 m above sea level, in Portugal. The nearest listed city is Cabeceiras de Basto, 50 km away.

Topography around Chaves

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

Within 3 km, the terrain around Chaves has only modest variations in elevation — a maximum elevation change of 145 m around an average of 378 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 839 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,082 m.

The land around Chaves is covered by grassland (34%), cropland (22%) and artificial surfaces (22%) within 3 km, grassland (53%) and trees (33%) within 16 km, and trees (45%) and grassland (45%) within 80 km.

3 km
145 m
16 km
839 m
80 km
2,082 m
treesshrubsgrasslandcroplandartificial surfaceswater
August weather nearby: Cabeceiras de Basto 50 km · Vila Real 54 km · Bragança 59 km · Fafe 67 km · Custoias 72 km · Felgueiras 73 km · Ourense 74 km · Guimarães 76 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 Chaves (41.7402°, -7.4688°, elevation 362 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. 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).