SeasonMapBarreirinhas (Lençóis Maranhenses) weather in July
Brazil
July in Barreirinhas: sweltering, a little rain, with clean air — fine if you can take sticky heat.
#2 of 12 months in Barreirinhas · #915 of 1383 destinations to visit in July · comfort 69/100 (tier C)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Barreirinhas in July
No notes yet. Open Barreirinhas on the map to add the first one.
Barreirinhas climate normals — July
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Feels like (high) | 34°C / 93°F | |
| Sea temperature | 29°C / 84°F | ♨️ bath-warm |
| Rainfall | 31 mm / 1.2 in | 🌦 some rain |
| Rainy days | 5 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | 22°C / 72°F | |
| Sunshine | 11 h/day | |
| Daylight | 12 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 34 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Barreirinhas in July
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 crowdsLagoons at their fullest, July winter break in Brazil, school holidays in 3 of the markets that fill it(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.
July includes Lagoons at their fullest.
Best weatherFair weatherToughest weather
What's on in Barreirinhas in July
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 July — FAQ
- Is July a good time to visit Barreirinhas?
- July in Barreirinhas: sweltering, a little rain, with clean air — fine if you can take sticky heat. It ranks #2 of 12 months for Barreirinhas on SeasonMap's comfort score (69/100).
- What is the weather like in Barreirinhas in July?
- In July, Barreirinhas averages a daily high of 31°C and a low of 25°C, with about 30.5 mm of rain over roughly 5 rainy days.
- What is the air quality in Barreirinhas in July?
- Barreirinhas has a mean US Air Quality Index of about 34 in July.