Weather in Fortaleza in August 2025
Average weather
Average temperature in Fortaleza in August
Going from a maximum of +31°C during the day to a minimum of +25°C during the night, the temperature in August averages around +29°C.
The average maximum temperature goes down 17% by the end of the month, compared with the beginning of the month, from +30°C to +29°C.
Is Fortaleza warm or cold in August?
Fortaleza is typically warm in August.
Maximum temperatures go up compared to the previous month from +29°C to +29°C. The minimum temperature also goes up from +25°C to +25°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how August is compared to other months in Fortaleza:
Water temperature in Fortaleza in August
Water in Fortaleza in August is Warm. It varies from +26°C to +28°C, with an average of +27°C. This is almost similar to the air temperature, which averages +29°C.
The water temperature in August is one of the coldest of the entire year:
Can you swim in Fortaleza in August?
Climate in Fortaleza in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +29°C | +29°C | +29°C | ||||
| Min. temperature | ||||||
| +22°C | +22°C | +23°C | ||||
| Max. temperature | ||||||
| +33°C | +33°C | +34°C | ||||
| Rainfall | ||||||
| 20 mm | 4 mm | 2 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 5 m/s | ||||
| Avg. water temperature | ||||||
| +28°C | +27°C | +27°C | ||||
| Humidity | ||||||
| 74% | 71% | 70% | ||||
| Air pressure | ||||||
| 1013 HPa | 1013 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 9 | 13 | 11 | ||||
| Cloudy days | ||||||
| 10 | 13 | 15 | ||||
| Rainy days | ||||||
| 12 | 5 | 4 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as great as in July. The temperature levels stay the same in the area of +29°C for average maximum temperature during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 20 mm to 4 mm. It feels drier, as humidity decreases from 74% to 71%. The average wind speed doesn’t change much during August, staying around 4 m/s. The good news is there are likely to be more sunny days in August, from 9 to 13.
September brings much the same weather, it remains great.
Wind
The average wind speed is 6 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Fortaleza is gradually decreasing during August, going from 7 m/s to 5 m/s over the course of the month.
Rain
How was the weather last August in Fortaleza?
Climate Change over Years
The climate in Fortaleza in August has not changed much over the last 43 years.
The average temperature was the lowest in 1985 (+28°C) and the highest in 2020 (+31°C). The driest year was 1993 with only 236 mm of rainfall, and the wettest year was 2009 with 1739 mm.
FAQ
Is August a good time to visit Fortaleza?
Can you sunbathe in Fortaleza in August?
Can you swim in Fortaleza in August?
Is Fortaleza rainy in August?
Is it sunny in Fortaleza in August?
Other cities in Brazil
Monthly weather in Fortaleza
Source of the data
For this page, we’ve looked at the typical weather in Fortaleza, 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.