Santiago de Compostela weather in August

In August, Santiago de Compostela sees average daytime highs of 23°C and overnight lows near 14°C, with 44 mm of rain across 7.2 wet days and about 13.8 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 42% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Santiago de Compostela's 1st-clearest and 11th-windiest month. For the whole year in context, see Santiago de Compostela's year-round climate.

Daytime high
23°
1st warmest
Overnight low
14°
12th coldest
Rainfall
44 mm
7.2 wet days
Daylight
13 h 48 min
6:45 AM – 8:31 PM
Cloud cover
49%
1st clearest
Wind
13 km/h
11th windiest
Solar energy
5.55 kWh/m²
Travel score
7.4
out of 10

Santiago de Compostela is city in Spain.

Air quality
Good
PM2.5 9.7 µg/m³ · 2019

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 23°C through the month.

A typical August day in Santiago de Compostela reaches about 23°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 27°C. Set against its neighbours, August runs on par with July and about 2°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12314
22314
32314
42314
52314
62314
72314
82314
92314
102314
112314
122314
132314
142314
152314
162314
172314
182314
192314
202314
212314
222314
232314
242314
252314
262314
272314
282314
292214
302214
312214

Santiago de Compostela 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° / 14113.99.22.5
Feb12° / 10011.610.23.0
Mar14° / 10612.111.63.9
Apr15° / 11514.413.14.1
May18° / 10°9213.114.45.2
Jun20° / 12°548.715.16.5
Jul22° / 14°305.914.87.5
Aug23° / 14°447.213.87.4
Sep21° / 13°699.112.36.7
Oct18° / 11°14013.510.85.2
Nov14° / 15115.39.53.5
Dec12° / 14213.88.92.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 42%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
46040
56040
66139
76040
86040
95941
105941
115941
126040
136040
145941
155941
165941
175941
185842
195743
205743
215743
225743
235644
245644
255743
265743
275743
285743
295743
305743
315743

Chance of precipitation in August

Any precipitation

Santiago de Compostela gets around 44 mm of rain over 7.2 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 22% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
119
220
320
421
521
621
721
821
921
1022
1122
1222
1322
1422
1522
1622
1723
1823
1923
2023
2124
2224
2324
2424
2524
2624
2724
2824
2924
3024
3124

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 51% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11359262
21358272
31456273
41555273
51555273
61654273
71654273
81752283
91752283
101753282
111752292
121851292
131851292
141850302
151850302
161850302
171950302
181950301
191950301
201949301
212049301
222049301
232149291
242149291
252249281
262349271
272349271
282449261
292450251
302550251
312550241

Wind in August

Winds average 13 km/h in August.

Across August, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 24 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 6:29 AM to 7:02 AM, and sunset from 8:51 PM to 8:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.46:298:51
214.36:308:50
314.36:318:49
414.36:328:48
514.26:338:47
614.26:348:45
714.16:358:44
814.16:368:43
914.16:388:41
1014.06:398:40
1114.06:408:39
1213.96:418:37
1313.96:428:36
1413.96:438:34
1513.86:448:33
1613.86:458:31
1713.76:468:30
1813.76:488:28
1913.66:498:27
2013.66:508:25
2113.56:518:23
2213.56:528:22
2313.56:538:20
2413.46:548:18
2513.46:558:17
2613.36:568:15
2713.36:588:13
2813.26:598:12
2913.27:008:10
3013.17:018:08
3113.17:028:06

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.55 kWh/m².

For context, solar energy here swings from a low near 1.34 kWh/m² to a high of 6.31 kWh/m² in July across the year — August's 5.55 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.0Intense
36.0Intense
46.0Bright
56.0Bright
65.9Bright
75.9Bright
85.9Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.7Bright
145.7Bright
155.6Bright
165.6Bright
175.5Bright
185.5Bright
195.5Bright
205.4Bright
215.4Bright
225.3Bright
235.3Bright
245.3Bright
255.2Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.1Bright
315.0Bright
Planning a trip in August

Is August a good time to visit Santiago de Compostela?

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

7.4
Sightseeing
2nd-best month of the year
5.6
Beach & pool
1st-best month of the year

August is one of the better times to visit Santiago de Compostela for general sightseeing.

What to pack for Santiago de Compostela in August

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

In August, Santiago de Compostela sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes and sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Santiago de Compostela 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 47 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
Mar13Bracing
Apr14Bracing
May15Bracing
Jun16Cool
Jul17Cool
Aug17Cool
Sep17Cool
Oct16Cool
Nov15Cool
Dec14Bracing

UV index in Santiago de Compostela 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 Santiago de Compostela peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 8Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar5Moderate
Apr6High
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Santiago de Compostela?

Santiago de Compostela sits at 42.9°N, 8.5°W, 257 m above sea level, in Spain. The nearest listed city is Teo, 10 km away.

Topography around Santiago de Compostela

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

Within 3 km, the terrain around Santiago de Compostela has significant variations in elevation — a maximum elevation change of 332 m around an average of 265 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 519 m; within 80 km, large variations in elevation — a maximum elevation change of 1,174 m.

The land around Santiago de Compostela is covered by trees (48%), artificial surfaces (29%) and grassland (22%) within 3 km, trees (64%) and grassland (24%) within 16 km, and trees (45%), water (30%) and grassland (21%) within 80 km.

3 km
332 m
16 km
519 m
80 km
1,174 m
treesshrubsgrasslandcroplandartificial surfaceswater
August weather nearby: Teo 10 km · Ribeira 18 km · A Estrada 22 km · Vilagarcía de Arousa 36 km · Boiro 38 km · Carballo 39 km · Lalín 43 km · Culleredo 47 km

Spain travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$38,627
2025
Happiness
6.5 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 540
Religion
Roman Catholic 58%atheist 16%agnostic 11%non-believer 11%

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 Santiago de Compostela (42.8805°, -8.5457°, elevation 257 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).