Temperatures in January
It's hot in January in Rio das Ostras with an average temperature of 32°C. Temperatures this month range from a low of 30°C to a high of 34°C. At night, you can expect temperatures between 21°C and 23°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Rio das Ostras in January. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of January
The month of January starts in Rio das Ostras with hot temperatures, averaging around 33°C during the day and nights close to 23°C. Plenty of days with a chance of precipitation. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-January
By mid-January, the average daytime temperature drops to around 32°C, with nights close to 23°C. The chance of precipitation is high during this period. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
End of January
By the end of January, the average daytime temperature in Rio das Ostras will be around 33°C, with nights close to 23°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
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Precipitation in January
In January, there is an average of 257 mm of precipitation, spread over 15 days. The wind speed is around 4 Bft, mostly coming from the East.
Across the whole month, the average precipitation chance is 50% per day.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in January for Rio das Ostras. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Rio das Ostras in January |
London | ||
|---|---|---|---|
 Average Temperature |
32°C | 8°C | |
 High Temp |
34°C | 9°C | |
| Low Temp |
30°C | 6°C | |
 Total Precipitation |
257 mm | 58 mm | |
| Rainy Days |
15 days | 9 days | |
December
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is January a good time to visit Rio das Ostras?
After some sun? Then January isn’t the best time to be in Rio das Ostras. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Rio das Ostras in January
With 39°C, Rio das Ostras hit the highest temperature in the last 10 years in January 2016. The lowest daytime temperature in this month was 23°C in 2023. The extreme night temperatures ranged from a low of 19°C to a high of 25°C.
Check out the climate of Rio das Ostras for all months and discover the best travel time
Curious about the climate in other parts of Brazil? Check out the weather and climate in places like Rio de Janeiro, Salvador, Pipa, or have a look at other destinations in Brazil.
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Daily Temperature in January in Rio das Ostras
This chart shows the average daily temperatures, both day and night, for each day in January in Rio das Ostras, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in January in Rio das Ostras
The chart below shows the average daily precipitation in January for Rio das Ostras, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for January, you can expect around 15 days of rain in Rio das Ostras.
Daily UV Index in January in Rio das Ostras
This chart shows the average daily UV index in January in Rio das Ostras, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in Rio das Ostras Over the Years
This chart shows the average temperature in January in Rio das Ostras, measured in degrees Celsius, over the past years.
Total Precipitation in January in Rio das Ostras Over the Years
This chart shows the average precipitation in January in Rio das Ostras, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in January for Rio das Ostras
Click on a specific day in January for detailed info on the typical weather on that day in Rio das Ostras. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in Rio das Ostras
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Average Weather in Rio das Ostras by Month
Click on a month below to see detailed weather info for Rio das Ostras. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Rio das Ostras for all months at once
