Weather in Rio das Ostras, Brazil
Historical monthly conditions · 2021–2025
Monthly averages
Average daily air-temperature lows/highs and peak wind gusts. Rain is the average monthly total.
| Month | Avg low | Avg high | Rain | Cloud cover | Avg peak gust |
|---|---|---|---|---|---|
| January | 23°C | 30°C | 198.2 mm | 66% | 34.2 km/h |
| February | 23°C | 30°C | 136.0 mm | 63% | 32.6 km/h |
| March | 23°C | 30°C | 131.7 mm | 50% | 31.4 km/h |
| April | 21°C | 28°C | 77.0 mm | 49% | 32.1 km/h |
| May | 19°C | 27°C | 37.7 mm | 44% | 30.5 km/h |
| June | 18°C | 26°C | 24.9 mm | 38% | 31.2 km/h |
| July | 17°C | 25°C | 24.6 mm | 37% | 31.7 km/h |
| August | 18°C | 25°C | 50.1 mm | 42% | 36.9 km/h |
| September | 20°C | 26°C | 41.6 mm | 51% | 40.3 km/h |
| October | 21°C | 26°C | 123.9 mm | 74% | 37.3 km/h |
| November | 21°C | 27°C | 170.3 mm | 68% | 37.3 km/h |
| December | 22°C | 29°C | 187.8 mm | 67% | 35.3 km/h |
Weather match by month
Feels like 15°C–30°C · cloud ≤60% · rain ≤0.1 mm/h · gust ≤50 km/h
Feels-like temperature accounts for humidity and wind in shade. Percentages cover 08:00–20:00 local solar time.
| Month | Match rate | |
|---|---|---|
| January | 14.7% | |
| February | 12.5% | |
| March | 17.9% | |
| April | 38.5% | |
| May | 50.6% | |
| June | 62.9% | |
| July | 66.9% | |
| August | 55.1% | |
| September | 44.2% | |
| October | 19.8% | |
| November | 22.9% | |
| December | 17.4% |
About this location and data
- Urban-centre population
- 190,778
- Elevation
- 56 m
- Coordinates
- 22.54°S, 41.97°W
- Urban area
- 62 km²
Weather averages use 2 ERA5 grid cells, weighted by the area of the urban centre in each cell.
2021-2025 recent-weather sample (not a 30-year normal).
How the weather scores are calculatedNearby places with higher scores
Annual results for the default weather criteria: