SeasonMapBarreirinhas (Lençóis Maranhenses) weather in August
Brazil
August in Barreirinhas: hot, dry, with clean air — a good time to visit.
#3 of 12 months in Barreirinhas · #983 of 1383 destinations to visit in August · comfort 66/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Barreirinhas in August
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Barreirinhas climate normals — August
| Daytime high | 32°C / 89°F | 🥵 hot |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Sea temperature | 29°C / 83°F | ♨️ bath-warm |
| Rainfall | 7 mm / 0.3 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 22°C / 72°F | |
| Sunshine | 11.3 h/day | |
| Daylight | 12 h | |
| Wind | 20 km/h / 13 mph | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Barreirinhas 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.
BusyLagoons at their fullest(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Barreirinhas'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 weatherBarreirinhas's weather peaks June–August.
August includes Lagoons at their fullest.
Best weatherFair weatherToughest weather
What's on in Barreirinhas in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Lagoons at their fullest
1 Jun – 15 Sep · usuallyHigh waterCrowdedThe rains stop in May and the dune valleys hold thousands of rainwater lagoons through the southern winter. June and July are the safe months; by late September the shallow ones have gone.
Where is Barreirinhas?
Barreirinhas in August — FAQ
- Is August a good time to visit Barreirinhas?
- August in Barreirinhas: hot, dry, with clean air — a good time to visit. It ranks #3 of 12 months for Barreirinhas on SeasonMap's comfort score (66/100).
- What is the weather like in Barreirinhas in August?
- In August, Barreirinhas averages a daily high of 31.8°C and a low of 25.2°C, with about 7 mm of rain over roughly 2 rainy days.
- What is the air quality in Barreirinhas in August?
- Barreirinhas has a mean US Air Quality Index of about 32 in August.