Fortaleza weather in September

September in Fortaleza: hot, dry, with clean air — one of the best months to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Fortaleza🇧🇷 Brazil · Guianas & Northern Brazil · Beach92
  1. 81Jan
  2. 72Feb
  3. 70Mar
  4. 68Apr
  5. 79May
  6. 85Jun
  7. 89Jul
  8. 92Aug
  9. 92Sep
  10. 91Oct
  11. 90Nov
  12. 87Dec

#2 of 12 months in Fortaleza · #127 of 1413 destinations to visit in September · comfort 92/100 (tier S)

Days
31°C
Nights
25°C
Wet days
1
Sun
11.1 h
Humidity
70%
Daylight
12 h
Fortaleza, Brazil
Photo: Nino Souza · Pexels

Traveller notes on Fortaleza in September

Other months in Fortaleza

Forum posters describe February in Fortaleza itself as offering fabulous weather with warm, pleasant evenings for a walk, and rain that, while a genuine part of the February-through-June stretch, is typically brief enough not to disrupt more than part of a single day. Posters note Fortaleza's average temperature holds around 27C essentially year-round, living up to its cidade-sol (Sun City) nickname, with Carnival season in February or March a particular highlight. Posters do flag that nearby coastal spots like Jericoacoara and Canoa Quebrada are just entering their own rainy season by February, though conditions there can still be good since it's early in that transition. Posters generally rate February as warm and mostly sunny for Fortaleza itself, with rain a real but usually short-lived, manageable factor.
Tripadvisor community · February · 1 month ago · Read more on Tripadvisor ↗
Forum posters call August one of Fortaleza's best months - part of the roughly August-through-March dry stretch with hot, sunny, almost rain-free conditions the norm. The Ceara coast (Fortaleza and nearby Jericoacoara both included) is well known among posters specifically for strong, near-constant wind this time of year, which makes the region a genuine hub for windsurfing and kitesurfing lessons - a double-edged feature that keeps beach days breezy and comfortable in the heat but can also affect swimming conditions and beach-umbrella setups. Posters consistently rate August as a safe, reliable choice for sun-seekers precisely because the dry season removes the rain risk that complicates travel in Brazil's wetter regions at the same time of year.
Tripadvisor community · August · 1 month ago · Read more on Tripadvisor ↗

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Fortaleza climate normals — September

Daytime high31°C / 88°F🥵 hot
Nighttime low25°C / 77°F
Feels like (high)32°C / 90°F
Sea temperature28°C / 82°F😎 warm sea
Rainfall3 mm / 0.1 in☀️ dry
Rainy days1 days
Humidity70%💧 humid
Dew point21°C / 70°F
Sunshine11.1 h/day
Daylight12.1 h
Wind28 km/h / 17 mph
Air quality (US AQI)50🍃 good

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

Crowds in Fortaleza 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)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Fortaleza'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 weatherFortaleza's weather peaks August–October.

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Best weatherFair weatherToughest weather

What's on in Fortaleza in September

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

  • Season

    Wind season on the Ceará coast

    1 Jul – 31 Dec · usually

    The trade winds settle in for the second half of the year and turn the beaches either side of the city into one of the more reliable kite spots anywhere. On the sand in town it means blown grit and short umbrellas.

What's on around the world in September →

Where is Fortaleza?

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Fortaleza in September — FAQ

Is September a good time to visit Fortaleza?
September in Fortaleza: hot, dry, with clean air — one of the best months to visit. It ranks #2 of 12 months for Fortaleza on SeasonMap's comfort score (92/100).
What is the weather like in Fortaleza in September?
In September, Fortaleza averages a daily high of 31°C and a low of 25°C, with about 3.2 mm of rain over roughly 0.6 rainy days.
What is the air quality in Fortaleza in September?
Fortaleza has a mean US Air Quality Index of about 50 in September.