Fortaleza Weather: September
 |
Average Day Temperature: | 90.7°F |
|
Average Night Temperature: | 79.4°F |
|
Sea Water Temperature: | 83.5°F |
|
Number of Sunny Days: | 15 days |
| Sunshine Hours: | 12.0 - 12.1 hours | |
|
Number of Rainy Days: | 0 days |
| Precipitation Totals: | 0.4 in | |
| detailed information | ||
forecast
| Fortaleza |
Temperature
| Fortaleza |
Air Temperature in September, °F
The highest day temperature in September 2025 was 94°F. The lowest night temperature was 75°F. The average values for day and night temperatures during September were 91.5°F и 77.1°F respectivly.
Fortaleza Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Fortaleza was 83.8°F. The maximum and minimum values were 83.6°F and 84.4°F respectively.
Most of the days in September are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Fortaleza is 0.4 in. It makes september the least rainy month of the year.
The average wind speed in September is 15.3 mph. It makes September the most windy month of the year for Fortaleza.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Fortaleza in September is 8.6 hours.
Fortaleza on the Weather Map
| Anchieta |  |
+72 |
| Armacao dos Buzios |  |
+72 |
| Buzios | |
+72 |
| Florianopolis |  |
+70 |
| Fortaleza | |
+84 |
| Itajai | |
+70 |
| Jericoacoara | |
+80 |
| Recife | |
+84 |
| Rio de Janeiro | |
+74 |
| Rio Grande |  |
+70 |
| Salvador | |
+82 |
| Santos | |
+74 |
| Sao Paulo | |
+68 |
| Unamar | |
+74 |
| Xangri-la | |
+68 |
| 0900 |  |
90°F | W 10 mph |
| 1200 |  |
94°F | W 14 mph |
| 1500 | |
90°F | W 12 mph |
| 1800 |  |
80°F | W 6 mph |
| 2100 |  |
80°F | W 5 mph |
| 0000 |  |
78°F | W 6 mph |
| 0300 | |
78°F | W 6 mph |
| 0600 |  |
84°F | W 10 mph |