Sete Rios weather in August

In August, Sete Rios sees average daytime highs of 24°C and overnight lows near 18°C, with 4 mm of rain across 1 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 80% of the time in August, and the air most often feels humid.

Daylight stretches from about 14 hours at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Sete Rios's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Sete Rios's year-round climate.

Daytime high
24°
1st warmest
Overnight low
18°
12th coldest
Rainfall
4 mm
1 wet days
Daylight
13 h 30 min
5:55 AM – 7:26 PM
Cloud cover
21%
2nd clearest
Wind
18 km/h
2nd windiest
Solar energy
6.8 kWh/m²
Travel score
9.2
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical August day in Sete Rios reaches about 24°C in the afternoon and slips back to 18°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 28°C. Set against its neighbours, August runs on par with July and about 1°C warmer than September.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12518
22518
32518
42518
52518
62518
72518
82518
92518
102518
112518
122518
132518
142518
152518
162518
172418
182418
192418
202418
212418
222418
232418
242418
252418
262418
272418
282418
292418
302418
312418

Sete Rios 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
Jan14° / 10°688.99.64.2
Feb15° / 10°517.510.54.6
Mar16° / 11°538.111.75.5
Apr17° / 12°518.4136.0
May19° / 14°425.914.17.1
Jun22° / 16°102.114.78.4
Jul24° / 18°20.614.49.3
Aug24° / 18°4113.59.2
Sep23° / 17°294.112.38.3
Oct20° / 16°778.9116.7
Nov17° / 13°8210.29.95.5
Dec15° / 11°799.49.34.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 80% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 11% of August, with mostly cloudy or overcast conditions the remaining 9%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1946
2946
3946
4946
5946
6946
7946
8937
9937
10937
11928
12928
13928
14919
15919
16919
17919
18919
199010
209010
219010
229010
239010
248911
258911
268911
278911
288911
298911
308911
318911

Chance of precipitation in August

Any precipitation

Sete Rios gets around 4 mm of rain over 1 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 3% and peaks near 5% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
12
23
33
43
53
63
73
83
93
103
113
123
133
143
153
163
173
183
193
203
213
224
234
244
254
264
274
284
294
304
315

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the humid band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1435565
2435556
3435556
4535546
5535546
6535546
7535546
8535537
9534547
10534547
11534547
12533557
13433567
14433567
15432577
16432577
17432577
18432577
19432577
20432577
21432577
22433567
23433567
24434566
25534556
26535546
27535546
28636535
29636535
30636535
31636535

Wind in August

Winds average 18 km/h in August.

Across August, daily wind ranges from about 17 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120light breeze
220light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 hours at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 5:41 AM to 6:09 AM, and sunset from 7:44 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:417:44
214.05:427:43
314.05:437:42
413.95:447:41
513.95:457:40
613.95:467:39
713.85:477:38
813.85:487:36
913.85:497:35
1013.75:507:34
1113.75:507:33
1213.75:517:32
1313.65:527:30
1413.65:537:29
1513.65:547:28
1613.55:557:26
1713.55:567:25
1813.45:577:24
1913.45:587:22
2013.45:597:21
2113.36:007:19
2213.36:017:18
2313.36:027:17
2413.26:027:15
2513.26:037:14
2613.16:047:12
2713.16:057:11
2813.06:067:09
2913.06:077:08
3013.06:087:06
3112.96:097:04

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.8 kWh/m².

For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 7.59 kWh/m² in July across the year — August's 6.8 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.3Intense
47.2Intense
57.2Intense
67.2Intense
77.1Intense
87.1Intense
97.1Intense
107.0Intense
117.0Intense
127.0Intense
136.9Intense
146.9Intense
156.8Intense
166.8Intense
176.8Intense
186.7Intense
196.7Intense
206.7Intense
216.6Intense
226.6Intense
236.5Intense
246.5Intense
256.5Intense
266.4Intense
276.4Intense
286.3Intense
296.3Intense
306.2Intense
316.2Intense
Planning a trip in August

Is August a good time to visit Sete Rios?

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

9.2
Sightseeing
2nd-best month of the year
8.0
Beach & pool
1st-best month of the year

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

What to pack for Sete Rios in August

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

In August, Sete Rios sees daytime highs around 24°C and nights near 18°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Sete Rios in August

The nearest coast averages about 19°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 23 km away) is warmest in September at about 19°C and coldest in February near 15°C.

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

14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan15Cool
Feb15Bracing
Mar15Bracing
Apr15Cool
May16Cool
Jun18Cool
Jul18Cool
Aug19Cool
Sep19Cool
Oct18Cool
Nov17Cool
Dec16Cool

UV index in Sete Rios 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 Sete Rios peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highHighModerateJul 15UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar6High
Apr8Very high
May7Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct5High
Nov3Moderate
Dec2Low
Location & terrain

Where is Sete Rios?

Sete Rios sits at 38.7°N, 9.2°W, 81 m above sea level, in Portugal. The nearest listed city is Cidade Universitária, 1.0 km away.

Topography around Sete Rios

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

Within 3 km, the terrain around Sete Rios has only modest variations in elevation — a maximum elevation change of 199 m around an average of 93 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 402 m; within 80 km, large variations in elevation — a maximum elevation change of 656 m.

The land around Sete Rios is covered by artificial surfaces (66%) and trees (26%) within 3 km, water (32%), artificial surfaces (28%) and grassland (20%) within 16 km, and water (40%) and grassland (30%) within 80 km.

3 km
199 m
16 km
402 m
80 km
656 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: Cidade Universitária 1.0 km · Campo Grande 2.0 km · Alvalade 2.0 km · Areeiro 2.0 km · Lisbon 2.0 km · Campo De Ourique 2.0 km · São Jorge de Arroios 2.0 km · Carnide 3.0 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 Sete Rios (38.7413°, -9.1613°, elevation 81 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).