Puerto Viejo (Puerto Viejo de Talamanca) weather in August

August in Puerto Viejo: sweltering, soaked, with clean air — a gamble, with 29 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Puerto Viejo🇨🇷 Costa Rica · Costa Rica & Panama · Beach64
  1. 82Jan
  2. 85Feb
  3. 88Mar
  4. 78Apr
  5. 63May
  6. 59Jun
  7. 58Jul
  8. 64Aug
  9. 67Sep
  10. 60Oct
  11. 56Nov
  12. 71Dec

#7 of 12 months in Puerto Viejo · #1028 of 1413 destinations to visit in August · comfort 64/100 (tier C)

Days
28°C
Nights
23°C
Wet days
29
Sun
8.3 h
Humidity
87%
Daylight
12 h
Puerto Viejo, Costa Rica
Photo: Luis Rod · Pexels

Traveller notes on Puerto Viejo in August

Puerto Viejo's forum consistently rates August as better than the genuinely wet June-July stretch on the Caribbean coast, with the back half of the month described as noticeably improving as September - reportedly the driest, sunniest month here - approaches. That framing is relative, though: some rain most days is still the norm this time of year, and posters were honest that Caribbean-side weather stays genuinely unpredictable regardless of the calendar. Hot and humid is the constant, with the real variable being how much of each day gets interrupted by a shower.
CaribbeanSideCostaRicaRegular · August · 1 month ago · Read more on Tripadvisor ↗

Other months in Puerto Viejo

Forum posters describe February as genuinely variable here - some visitors get a good run of sunny days mixed with a few cloudy, showery ones, while others land mostly sunny and dry throughout their stay, with no reliable way to predict which in advance. Posters are consistent that the Caribbean side of Costa Rica, where Puerto Viejo sits, gets real rain year-round unlike the more clearly seasonal Pacific coast, with local experience suggesting roughly 65% of rain falls at night and most daytime rain is a short shower rather than an all-day event. Posters generally rate the destination higher for wildlife and rainforest activities than for guaranteed beach-lounging weather, given the real chance of a rainier-than-hoped stretch even in the relatively better dry season.
Tripadvisor community · February · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Puerto Viejo's card on the map.

Puerto Viejo climate normals — August

Daytime high28°C / 82°F🔥 sweltering
Nighttime low23°C / 73°F
Feels like (high)34°C / 93°F
Sea temperature30°C / 86°F♨️ bath-warm
Rainfall319 mm / 12.5 in⛈ soaked
Rainy days29 days
Humidity87%💦 very humid
Dew point23°C / 73°F
Sunshine8.3 h/day
Daylight12.4 h
Wind8 km/h / 5 mph
Air quality (US AQI)28🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Puerto Viejo 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.

BusyAfro-Costa Rican culture parades, school holidays in 3 of the markets that fill it(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Puerto Viejo'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).

Fair weatherPuerto Viejo's weather peaks January–March.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Puerto Viejo in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Festival

    Afro-Costa Rican culture parades

    20–31 Aug · usuallyMajor festivalCrowded

    Late August brings calypso, dance groups and floats to the streets of Puerto Viejo and Limón for the Day of the Black Person and Afro-Costa Rican Culture on 31 August. Source ↗

  • Season

    Wet season

    MonsoonRisk

    29 rainy days and about 319 mm in the month — the real kind of rainy season, not afternoon showers.

    from the climate normals

What's on around the world in August →

Nearby, and something's on

Within 300 km of Puerto Viejo — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Puerto Viejo?

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Puerto Viejo in August — FAQ

Is August a good time to visit Puerto Viejo?
August in Puerto Viejo: sweltering, soaked, with clean air — a gamble, with 29 rainy days. It ranks #7 of 12 months for Puerto Viejo on SeasonMap's comfort score (64/100).
What is the weather like in Puerto Viejo in August?
In August, Puerto Viejo averages a daily high of 27.8°C and a low of 22.8°C, with about 318.6 mm of rain over roughly 28.9 rainy days.
What is the air quality in Puerto Viejo in August?
Puerto Viejo has a mean US Air Quality Index of about 28 in August.

Within 300 km: Bocas del Toro's Sea turtle nesting around 1 Mar – 31 Oct, and Tortuguero's Green turtle nesting on 1 Jul – 31 Oct.