Rio das Ostras Weather: September
 |
Average Day Temperature: | 81.2°F |
|
Average Night Temperature: | 69.9°F |
|
Sea Water Temperature: | 73.4°F |
|
Number of Sunny Days: | 14 days |
| Sunshine Hours: | 11.7 - 12.3 hours | |
|
Number of Rainy Days: | 1 day |
| Precipitation Totals: | 0.8 in | |
| detailed information | ||
forecast
| Rio das Ostras |
Temperature
| Rio das Ostras |
Air Temperature in September, °F
The highest day temperature in September 2025 was 94°F. The lowest night temperature was 62°F. The average values for day and night temperatures during September were 77.6°F и 68.4°F respectivly.
Rio das Ostras Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Rio das Ostras was 73.2°F. The maximum and minimum values were 70.8°F and 75.2°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 Rio das Ostras is 0.8 in.
The average wind speed in September is 10.2 mph. It makes September the most windy month of the year for Rio das Ostras.
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 Rio das Ostras in September is 7.3 hours.
Rio das Ostras on the Weather Map
| Angra dos Reis |  |
+76 |
| Armacao dos Buzios |  |
+76 |
| Buzios | |
+76 |
| Florianopolis | |
+74 |
| Fortaleza |  |
+80 |
| Joao Pessoa |  |
+80 |
| Porto Alegre | |
+74 |
| Recife | |
+80 |
| Rio de Janeiro | |
+78 |
| Rio Grande | |
+68 |
| Salvador | |
+82 |
| Santos | |
+78 |
| Sao Paulo | |
+76 |
| Sao Sebastiao | |
+76 |
| Xangri-la | |
+74 |
| 0600 |  |
76°F | SW 14 mph |
| 0900 | |
88°F | SW 13 mph |
| 1200 | |
92°F | SW 12 mph |
| 1500 | |
90°F | SW 17 mph |
| 1800 | |
78°F | SW 18 mph |
| 2100 |  |
76°F | SW 16 mph |
| 0000 |  |
74°F | SW 14 mph |
| 0300 | |
72°F | SW 12 mph |