Monthly climate guide
Porto Seguro weather in September
With highs near 30°C (85°F) and lows around 19°C (65°F), September feels hot in Porto Seguro. Rainfall averages about 56 mm (some rain) and the sky is a mix of sun and cloud. Daytime highs are 2°C warmer than August and about the same as October.
What stands out in September
- Humidity near 77% makes 30°C feel stickier than it sounds.
- It's one of the drier stretches of the year in Porto Seguro.
- Rain is well below Porto Seguro's usual level (around 43% less).
- Just 240 km apart, but Porto Seguro runs about 4°C warmer than Itacaré this month.
It's usually the driest month of the year.
Avg high
30°C
85°F
Avg low
19°C
65°F
Rainfall
56 mm
some rain
Humidity
77%
relative
Sky
52%
cloud · a mix of sun and cloud
Porto Seguro weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 32°C / 90°F | 22°C / 71°F | 77 mm | 77% | 52% |
| February | 33°C / 91°F | 22°C / 72°F | 60 mm | 75% | 50% |
| March | 33°C / 91°F | 22°C / 72°F | 98 mm | 77% | 54% |
| April | 32°C / 89°F | 22°C / 71°F | 121 mm | 79% | 53% |
| May | 29°C / 85°F | 20°C / 68°F | 94 mm | 83% | 55% |
| June | 28°C / 82°F | 19°C / 67°F | 116 mm | 84% | 53% |
| July | 27°C / 81°F | 18°C / 65°F | 90 mm | 84% | 52% |
| August | 28°C / 82°F | 18°C / 64°F | 84 mm | 81% | 51% |
| September | 30°C / 85°F | 19°C / 65°F | 56 mm | 77% | 52% |
| October | 31°C / 88°F | 20°C / 68°F | 111 mm | 77% | 61% |
| November | 31°C / 87°F | 21°C / 70°F | 168 mm | 80% | 73% |
| December | 32°C / 89°F | 21°C / 71°F | 108 mm | 79% | 57% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is September a good time to visit Porto Seguro?
Compare the months in the chart above to find your ideal window.
Best time to visit Porto Seguro →Other Brazil cities in September
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Porto Seguro weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/brazil/porto-seguro/september
<a href="https://weathercompare.eu/weather/brazil/porto-seguro/september">Porto Seguro weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/brazil/porto-seguro" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Porto Seguro weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/brazil/porto-seguro/september">Porto Seguro weather in September</a> – WeatherCompare</p>
Porto Seguro in September: quick answers
Is September a good time to visit Porto Seguro?
Yes. September is one of the best months for Porto Seguro, with highs around 30°C and about 56 mm of rain.
How warm is Porto Seguro in September?
Average highs are about 30°C (85°F) and average lows about 19°C (65°F), based on 10 years of daily data.
Does it rain a lot in Porto Seguro in September?
Porto Seguro typically gets around 56 mm of rain in September — some rain. It's usually the driest month of the year.
Figures are long-term averages for the area around Porto Seguro (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.