Weather in Porto Seguro in September 2025
Average weather
Average temperature in Porto Seguro in September
Going from a maximum of +31°C during the day to a minimum of +20°C during the night, the temperature in September averages around +27°C.
The average maximum temperature goes up 9% by the end of the month, compared with the beginning of the month, from +25°C to +26°C.
Is Porto Seguro warm or cold in September?
Porto Seguro is typically warm in September.
Maximum temperatures go up compared to the previous month from +26°C to +26°C. The minimum temperature also goes up from +20°C to +21°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Porto Seguro:
Climate in Porto Seguro in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +26°C | +26°C | +27°C | ||||
| Min. temperature | ||||||
| +16°C | +16°C | +17°C | ||||
| Max. temperature | ||||||
| +30°C | +31°C | +32°C | ||||
| Rainfall | ||||||
| 55 mm | 54 mm | 102 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 82% | 82% | 83% | ||||
| Air pressure | ||||||
| 1019 HPa | 1017 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 2 | 2 | 1 | ||||
| Cloudy days | ||||||
| 6 | 7 | 7 | ||||
| Rainy days | ||||||
| 23 | 21 | 23 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. The temperature levels stay the same in the area of +26°C for average maximum temperature during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 55 mm to 54 mm. Humidity levels don’t change as the month goes on, averaging around 82%. The average wind speed doesn’t change much during September, staying around 3 m/s. The amount of sunny days stay about the same, averaging 2 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Porto Seguro is gradually increasing during September, going from 2 m/s to 3 m/s over the course of the month.
Rain
How was the weather last September in Porto Seguro?
Climate Change over Years
The climate in Porto Seguro in September has not changed much over the last 43 years.
The average temperature was the lowest in 1981 (+27°C) and the highest in 2019 (+29°C). The driest year was 2015 with only 699 mm of rainfall, and the wettest year was 1985 with 1566 mm.
FAQ
Is September a good time to visit Porto Seguro?
Can you sunbathe in Porto Seguro in September?
Is Porto Seguro rainy in September?
Is it sunny in Porto Seguro in September?
Other cities in Brazil
Monthly weather in Porto Seguro
Source of the data
For this page, we’ve looked at the typical weather in Porto Seguro, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.