🇧🇷 Weather in Rio das Ostras
Map Overlays:
Hourly Forecast for Rio das Ostras
14:00
23°
73%
15:00
22°
73%
16:00
22°
73%
17:00
20°
5%
18:00
20°
5%
19:00
19°
73%
20:00
19°
73%
21:00
19°
73%
22:00
18°
73%
23:00
18°
73%
00:00
18°
73%
01:00
18°
73%
02:00
18°
73%
03:00
18°
77%
04:00
18°
74%
05:00
19°
73%
06:00
19°
73%
07:00
19°
77%
08:00
20°
78%
09:00
20°
73%
10:00
20°
73%
11:00
21°
73%
12:00
21°
73%
13:00
21°
73%
14-Day Forecast for Rio das Ostras
2026-06-03
Patchy rain nearby
23° /
18°
2026-06-04
Moderate rain
21° /
18°
2026-06-05
Patchy rain nearby
22° /
17°
2026-06-06
Sunny
23° /
16°
2026-06-07
Sunny
24° /
15°
2026-06-08
Sunny
24° /
16°
2026-06-09
Sunny
26° /
17°
Additional Forecasts for Rio das Ostras
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 95.0 μg/m³
O₃ (Ozone) 76.0 μg/m³
NO₂ (Nitrogen Dioxide) 0.7 μg/m³
SO₂ (Sulphur Dioxide) 0.6 μg/m³
PM2.5 (Fine particles) 6.0 μg/m³
PM10 (Coarse particles) 9.6 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Brazil
Weather in Rio das Ostras — FAQ
Answers refreshed each request based on current conditions in Rio das Ostras.
What is the weather like right now in Rio das Ostras?
Right now in Rio das Ostras, Brazil the temperature is 24.0°C (feels like 25.6°C), with patchy rain nearby. Relative humidity is 65% and wind is 13.0 km/h.
What is today's high and low temperature in Rio das Ostras?
Today's forecast high in Rio das Ostras is 22.9°C and the overnight low is 17.5°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Rio das Ostras today?
The chance of precipitation in Rio das Ostras today is 73%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Rio das Ostras differ from nearby cities?
Even short distances can change temperatures noticeably. Rio das Ostras's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.