Monthly climate guide
Fortaleza weather in September
September in Fortaleza is typically hot, with average daytime highs around 30°C (86°F) and night-time lows near 25°C (77°F). The month usually brings about 4 mm of rain (very dry) and is mostly sunny. Daytime highs are about the same as August and about the same as October.
What stands out in September
- Only 2 months are warmer in Fortaleza than September.
- Rain is well below Fortaleza's usual level (around 95% less).
- It's one of the drier stretches of the year in Fortaleza.
- There's little difference between day and night (around 5°C).
It's usually the driest month of the year.
Avg high
30°C
86°F
Avg low
25°C
77°F
Rainfall
4 mm
very dry
Humidity
72%
relative
Sky
26%
cloud · mostly sunny
Fortaleza weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 30°C / 85°F | 26°C / 79°F | 118 mm | 78% | 68% |
| February | 29°C / 84°F | 26°C / 79°F | 157 mm | 81% | 74% |
| March | 29°C / 84°F | 26°C / 79°F | 196 mm | 82% | 73% |
| April | 29°C / 84°F | 26°C / 79°F | 194 mm | 84% | 75% |
| May | 29°C / 84°F | 26°C / 79°F | 119 mm | 83% | 60% |
| June | 29°C / 84°F | 25°C / 78°F | 70 mm | 80% | 48% |
| July | 29°C / 84°F | 25°C / 76°F | 46 mm | 78% | 45% |
| August | 30°C / 85°F | 25°C / 76°F | 7 mm | 74% | 28% |
| September | 30°C / 86°F | 25°C / 77°F | 4 mm | 72% | 26% |
| October | 30°C / 87°F | 26°C / 78°F | 7 mm | 72% | 35% |
| November | 30°C / 87°F | 26°C / 79°F | 10 mm | 73% | 46% |
| December | 30°C / 86°F | 26°C / 79°F | 27 mm | 74% | 53% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- Sunglasses
Is September a good time to visit Fortaleza?
Compare the months in the chart above to find your ideal window.
Best time to visit Fortaleza →Other Brazil cities in September
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Fortaleza weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/brazil/fortaleza/september
<a href="https://weathercompare.eu/weather/brazil/fortaleza/september">Fortaleza weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/brazil/fortaleza" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Fortaleza weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/brazil/fortaleza/september">Fortaleza weather in September</a> – WeatherCompare</p>
Fortaleza in September: quick answers
Is September a good time to visit Fortaleza?
Yes. September is one of the best months for Fortaleza, with highs around 30°C and about 4 mm of rain.
How warm is Fortaleza in September?
Average highs are about 30°C (86°F) and average lows about 25°C (77°F), based on 10 years of daily data.
Does it rain a lot in Fortaleza in September?
Fortaleza typically gets around 4 mm of rain in September — very dry. It's usually the driest month of the year.
Figures are long-term averages for the area around Fortaleza (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.