Rio das Ostras weather
At 6:45 PM local time it was mostly clear and 23°C (73°F). Light rain for 5 of the next 24 hours (under 1 mm/h, 0.7 mm total) — cloudy, but fine to be out. Best months for weather: Apr–Sep. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Rio das Ostras, Rio de Janeiro, Brazil.
Current conditions
- Clouds
- 23%
- Chance of rain
- 33%
- Rain
- 0.0 mm/h
Hourly Forecast
Light rain for 5 of the next 24 hours (under 1 mm/h, 0.7 mm total) — cloudy, but fine to be out
Daily Forecast
Best Time to Visit
Peak season Apr–SepOff season Nov–Jan
About Rio das Ostras weather
Is it raining in Rio das Ostras right now?
No. It’s mostly clear and 23° right now. Light rain for 5 of the next 24 hours (under 1 mm/h, 0.7 mm total) — cloudy, but fine to be out.
What’s the weather like in Rio das Ostras this week?
Over the next 7 days, expect highs of 26–37° and lows of 19–23°. Rain is likely on 5 of 7 days (Saturday, Sunday, Monday, Tuesday, Friday). The driest day looks like Wednesday.
Has it been raining in Rio das Ostras lately?
In the past 7 days, Rio das Ostras had 5 rainy days and 53.3 mm of rain in total.
What should I pack for Rio das Ostras?
For the coming week, bring an umbrella or rain jacket, light, breathable clothes and sunscreen.
Rio das Ostras weather by month
When is the best time to visit Rio das Ostras?
Based on weather alone, the best time to visit Rio das Ostras is Apr–Sep, according to NASA's 2001–2025 climate averages. Nov–Jan tends to be the least pleasant. Average highs run from 25°C (76°F) in July to 29°C (83°F) in February.
What is the rainiest month in Rio das Ostras?
December is the wettest month, with about 198 mm (7.8 in) of rain on average. August is the driest, with about 35 mm (1.4 in).
What is the hottest month in Rio das Ostras?
February is the warmest, with average highs of 29°C (83°F) and lows of 23°C (73°F). July is the coolest, with highs of 25°C (76°F) and lows of 18°C (65°F).
Does Rio das Ostras have a rainy season?
Yes. Nov–Jan is the rainy season (150 mm or more a month), while Jun–Sep is usually dry (under 60 mm).
How warm is the sea in Rio das Ostras?
The sea is warmest in March at about 26°C (78°F) and coolest in August at about 22°C (72°F). It is comfortable for swimming (22°C or more) in Year-round.
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine, forecast and current conditions from Open-Meteo. Page updated . How we rate months