SeasonMapMorro de São Paulo weather in September
Brazil
September in Morro de São Paulo: warm, rainy, with clean air — fine if you can take 20 rainy days.
#3 of 12 months in Morro de São Paulo · #278 of 1383 destinations to visit in September · comfort 89/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Morro de São Paulo in September
No notes yet. Open Morro de São Paulo on the map to add the first one.
Morro de São Paulo climate normals — September
| Daytime high | 26°C / 79°F | 🌤 warm |
|---|---|---|
| Nighttime low | 22°C / 71°F | |
| Sea temperature | 27°C / 80°F | 😎 warm sea |
| Rainfall | 81 mm / 3.2 in | 🌧 rainy |
| Rainy days | 20 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 20°C / 69°F | |
| Sunshine | 10.6 h/day | |
| Daylight | 12 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Morro de São Paulo in September
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.
Busyschool holidays in 2 of the markets that fill it, one of its best months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Morro de São Paulo'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 weatherMorro de São Paulo's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Morro de São Paulo in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Rule
Island arrival fee
1 Jan – 31 DecCairu charges everyone landing in the Tinharé archipelago a preservation tariff, paid at the quay or in advance through the council's app. It went from R$70 to R$90 in August 2026. Source ↗
Where is Morro de São Paulo?
Morro de São Paulo in September — FAQ
- Is September a good time to visit Morro de São Paulo?
- September in Morro de São Paulo: warm, rainy, with clean air — fine if you can take 20 rainy days. It ranks #3 of 12 months for Morro de São Paulo on SeasonMap's comfort score (89/100).
- What is the weather like in Morro de São Paulo in September?
- In September, Morro de São Paulo averages a daily high of 26.3°C and a low of 21.9°C, with about 81.3 mm of rain over roughly 20.4 rainy days.
- What is the air quality in Morro de São Paulo in September?
- Morro de São Paulo has a mean US Air Quality Index of about 38 in September.