Costa da Caparica (Caparica) weather in August
August in Costa da Caparica: hot, dry, with clean air — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#2 of 12 months in Costa da Caparica · #276 of 1413 destinations to visit in August · comfort 89/100 (tier A)
- Days
- 29°C
- Nights
- 19°C
- Wet days
- 0
- Sun
- 12.2 h
- Humidity
- 72%
- Daylight
- 14 h
Traveller notes on Costa da Caparica in August
Notes from nearby Lisbon (12 km away)
Costa da Caparica doesn't have its own notes for August yet — these are about Lisbon, close enough to share the season.
August reads fine on paper and is fine — the nortada wind off the Atlantic keeps it from feeling like Seville. What the score can't tell you is that half the city is shut for holidays and every restaurant that stays open is booked. Go for the beach at Costa da Caparica, not the food.
Other months in Costa da Caparica
Lisbon-area forum threads describe January as running around 15C in the day and 7-10C at night on average, with real variation depending on the day - a sunny stretch can reach the high teens C, while a grey, rainy one might barely clear 10C with nights near 5C. Posters recommended warm layers and sturdy, non-slip footwear, since wet cobblestones are a genuine hazard on rainy days around the wider Lisbon coast. Costa da Caparica, just across the river, follows this same general Atlantic winter pattern rather than anything milder or wetter.
Forum posters describe a steady, pleasant Atlantic breeze here that keeps July temperatures from feeling too intense, though it also means the ocean itself stays genuinely cold - posters describe water temperatures under 20C even at the height of summer, more suited to surfing (with a wetsuit) than casual swimming. A light jacket for evenings is standard advice despite the warm days. Posters flag a practical logistics point for anyone coming from Lisbon: bus traffic to and from Costa da Caparica gets genuinely heavy in summer, so a trip that normally takes around 30 minutes can run considerably longer during peak July-August crowds.
Add your own note from Costa da Caparica's card on the map.
Costa da Caparica climate normals — August
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Costa da Caparica in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsBeach season, Lisbon weekend crush, Summer holidays in Portugal(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Costa da Caparica's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherCosta da Caparica's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
What's on in Costa da Caparica in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Nortada afternoons
1 May – 30 SepWind seasonRiskThe summer north wind fills in after midday and blows sand down the whole strand. Morning is the still half of the day here; by three the windbreaks are up and the umbrellas are down. Source ↗
- Season
Beach season
15 Jun – 15 Sep · usuallySummer season opensCrowdedThe bar-restaurants strung down the dune line only open for the declared bathing season, when the beaches are flagged and staffed. Out of it the sand is yours and there is nowhere to buy lunch. Source ↗
- Season
Lisbon weekend crush
15 Jun – 15 SepDay-tripper crushCrowdedThis is the capital's nearest ocean beach and on a hot Saturday the bridge and the Ponte 25 de Abril approaches back up from mid-morning. Weekdays, or the far southern beaches, are the way round it. Source ↗
Nearby, and something's on
Within 300 km of Costa da Caparica — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Costa da Caparica?
Costa da Caparica in August — FAQ
- Is August a good time to visit Costa da Caparica?
- August in Costa da Caparica: hot, dry, with clean air — one of the best months to visit. It ranks #2 of 12 months for Costa da Caparica on SeasonMap's comfort score (89/100).
- What is the weather like in Costa da Caparica in August?
- In August, Costa da Caparica averages a daily high of 29°C and a low of 18.9°C, with about 0.8 mm of rain over roughly 0.3 rainy days.
- What is the air quality in Costa da Caparica in August?
- Costa da Caparica has a mean US Air Quality Index of about 37 in August.
Within 300 km: Cascais' Festas do Mar on 20–30 Aug, and Ericeira's Festas da Senhora da Boa Viagem around 5–18 Aug.