Climate and monthly weather forecastRio das Ostras, Brazil
Climate and monthly weather forecast
Weather in January
January, like December, in Rio das Ostras, Brazil, is another warm summer month, with an average temperature varying between 28.8°C (83.8°F) and 23.1°C (73.6°F). Rio das Ostras's entry into January measures an average high-temperature of a still warm 28.8°C (83.8°F), closely parallel to the preceding month. Weather in January »Weather in February
The last month of the summer, February, is another warm month in Rio das Ostras, Brazil, with an average temperature fluctuating between 29.1°C (84.4°F) and 22.9°C (73.2°F). February is the month when Rio das Ostras experiences its warmest temperatures, averaging a high of 29.1°C (84.4°F) and a low of 22.9°C (73.2°F). The average heat index in February is evaluated at a very hot 35°C (95°F). Weather in February »Weather in March
March, the first month of the autumn in Rio das Ostras, is also a moderately hot month, with temperature in the range of an average low of 22.7°C (72.9°F) and an average high of 28°C (82.4°F). March's presence records an average high-temperature of a still warm 28°C (82.4°F), closely mirroring February's climate. Weather in March »Weather in April
April, like March, in Rio das Ostras, Brazil, is a moderately hot autumn month, with an average temperature ranging between min 21.4°C (70.5°F) and max 26.5°C (79.7°F). The transition into April notes an average high-temperature of a still warm 26.5°C (79.7°F), revealing a mild distinction from the 28°C (82.4°F) in March. Weather in April »Weather in May
May, the last month of the autumn in Rio das Ostras, is another warm month, with an average temperature fluctuating between 19.4°C (66.9°F) and 25°C (77°F). The advent of May presents an average high-temperature of a still warm 25°C (77°F), maintaining a close correlation with the preceding month. Weather in May »Weather in June
June, the first month of the winter in Rio das Ostras, is still a warm month, with an average temperature fluctuating between 18.8°C (65.8°F) and 24.1°C (75.4°F). Rio das Ostras's June weather, marked by an average high temperature of 24.1°C (75.4°F) and an average low temperature of 18.8°C (65.8°F), is the coldest in the year. Weather in June »Weather in July
July, like June, in Rio das Ostras, Brazil, is another warm winter month, with temperature in the range of an average high of 24.2°C (75.6°F) and an average low of 18.5°C (65.3°F). The average high-temperature during July registers at a still warm 24.2°C (75.6°F), closely corresponding to the preceding month. Weather in July »Weather in August
August, the last month of the winter in Rio das Ostras, is another warm month, with temperature in the range of an average high of 24.3°C (75.7°F) and an average low of 18.3°C (64.9°F). August registers an average high-temperature of a still moderately hot 24.3°C (75.7°F), slightly varied from July's 24.2°C (75.6°F). Weather in August »Weather in September
The first month of the spring, September, is also a moderately hot month in Rio das Ostras, Brazil, with temperature in the range of an average low of 19.3°C (66.7°F) and an average high of 25.2°C (77.4°F). Rio das Ostras in September witnesses an average high-temperature of a still warm 25.2°C (77.4°F), indicating a slight variation from August's 24.3°C (75.7°F). Weather in September »Weather in October
October, like September, in Rio das Ostras, Brazil, is a moderately hot spring month, with an average temperature varying between 25.9°C (78.6°F) and 20.6°C (69.1°F). October ushers in an average high-temperature of a still warm 25.9°C (78.6°F), aligning closely with the preceding month. Weather in October »Weather in November
November, the last month of the spring in Rio das Ostras, is also a moderately hot month, with an average temperature ranging between max 25.8°C (78.4°F) and min 21.1°C (70°F). Entering November, Rio das Ostras's average high-temperature reads a still moderately hot 25.8°C (78.4°F), indicating a close resemblance to the previous month's climate. Weather in November »Weather in December
December, the first month of the summer in Rio das Ostras, is still a warm month, with an average temperature varying between 22.2°C (72°F) and 27.5°C (81.5°F). At the onset of December, Rio das Ostras records an average high-temperature of a still moderately hot 27.5°C (81.5°F), showing little deviation from the preceding month. Weather in December »Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, there are 179.7 rainfall days, and 674mm (26.54") of precipitation is accumulated.
With an average maximum UV index of 7, January is the month with the highest UV index in Rio das Ostras.
In Rio das Ostras, temperatures reach their average annual highs in February, measuring 29.1°C (84.4°F) and a minimum average of 22.9°C (73.2°F).
The month with the most sunshine in Rio das Ostras is February, with an average of 9h of sunshine.
With an average sea temperature of 25.8°C (78.4°F), March is the month with the warmest seawater.
June, recording an average high temperature of 24.1°C (75.4°F) and a low temperature of 18.8°C (65.8°F), is Rio das Ostras's coldest month.
June is the month with the least rainfall in Rio das Ostras, Brazil. Rain falls for 10.8 days and accumulates 18mm (0.71") of precipitation.
The month with the shortest days is June, with an average of 10h and 48min of daylight.
July and September, with an average maximum UV index of 5, are months with the lowest UV index in Rio das Ostras, Brazil.
August and September, with an average relative humidity of 78%, are the least humid months.
With an average sea temperature of 21.9°C (71.4°F), September is the month with the coldest seawater.
With an average of 7.6h of sunshine, October has the least sunshine of the year in Rio das Ostras.
The months with the highest humidity in Rio das Ostras are November and December, with an average relative humidity of 84%.
November is the month with the most rainfall in Rio das Ostras, Brazil. Rain falls for 19.2 days and accumulates 108mm (4.25") of precipitation.
December has the longest days of the year in Rio das Ostras, with an average of 13h and 30min of daylight.
Rio das Ostras does not utilize Daylight Saving Time (DST). -03 timezone is used over the entire year.
Average temperature
Rio das Ostras, Brazil
The warmest month (with the highest average high temperature) is February (29.1°C).
The month with the lowest average high temperature is June (24.1°C).
The month with the highest average low temperature is January (23.1°C).
The coldest month (with the lowest average low temperature) is August (18.3°C).
Average pressure
Rio das Ostras, Brazil
- Average pressure in January:
1012.9mbar - Average pressure in February:
1013.2mbar - Average pressure in March:
1013.7mbar - Average pressure in April:
1015.7mbar - Average pressure in May:
1017.6mbar - Average pressure in June:
1019.7mbar
- Average pressure in July:
1020.7mbar - Average pressure in August:
1020.3mbar - Average pressure in September:
1018.2mbar - Average pressure in October:
1015.3mbar - Average pressure in November:
1013.3mbar - Average pressure in December:
1012mbar
The month with the highest atmospheric pressure is July (1020.7mbar).
The month with the lowest atmospheric pressure is December (1012mbar).
Average wind speed
Rio das Ostras, Brazil
- Average wind speed in January:
13.7km/h - Average wind speed in February:
13.2km/h - Average wind speed in March:
10.9km/h - Average wind speed in April:
11.2km/h - Average wind speed in May:
11.5km/h - Average wind speed in June:
12km/h
- Average wind speed in July:
13.4km/h - Average wind speed in August:
14.9km/h - Average wind speed in September:
15.8km/h - Average wind speed in October:
15.4km/h - Average wind speed in November:
14.1km/h - Average wind speed in December:
12.9km/h
The windiest month (with the highest average wind speed) is September (15.8km/h).
The calmest month (with the lowest average wind speed) is March (10.9km/h).
Average humidity
Rio das Ostras, Brazil
The months with the highest relative humidity are November and December (84%).
The months with the lowest relative humidity are August and September (78%).
Average rainfall
Rio das Ostras, Brazil
The wettest month (with the highest rainfall) is November (108mm).
The driest month (with the least rainfall) is June (18mm).
Average rainfall days
Rio das Ostras, Brazil
- Average rainfall days in January:
19.2 days - Average rainfall days in February:
16 days - Average rainfall days in March:
21.7 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
12.5 days - Average rainfall days in June:
10.8 days
- Average rainfall days in July:
9.1 days - Average rainfall days in August:
8.9 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
16.2 days - Average rainfall days in November:
19.2 days - Average rainfall days in December:
19.9 days
The month with the highest number of rainy days is March (21.7 days).
The month with the least rainy days is August (8.9 days).
Average sea temperature
Rio das Ostras, Brazil
The best month for swimming (with the highest average sea temperature) is March (25.8°C).
The coldest month (with the lowest average sea temperature) is September (21.9°C).
Average daylight / Average sunshine
Rio das Ostras, Brazil
- Average daylight in January:
13h and 18min - Average daylight in February:
12h and 48min - Average daylight in March:
12h and 12min - Average daylight in April:
11h and 36min - Average daylight in May:
11h and 0min - Average daylight in June:
10h and 48min
- Average daylight in July:
10h and 54min - Average daylight in August:
11h and 24min - Average daylight in September:
12h and 0min - Average daylight in October:
12h and 36min - Average daylight in November:
13h and 12min - Average daylight in December:
13h and 30min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in January:
8h and 48min - Average sunshine in February:
9h and 0min - Average sunshine in March:
8h and 24min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 30min - Average sunshine in June:
8h and 36min
- Average sunshine in July:
8h and 24min - Average sunshine in August:
8h and 12min - Average sunshine in September:
8h and 12min - Average sunshine in October:
7h and 36min - Average sunshine in November:
8h and 18min - Average sunshine in December:
8h and 48min
The month with the most sunshine is February (Average sunshine: 9h and 0min).
The month with the least sunshine is October (Average sunshine: 7h and 36min).
Average sunshine days
Rio das Ostras, Brazil
- Average sunshine days in January:
7.3 days - Average sunshine days in February:
7.2 days - Average sunshine days in March:
5.8 days - Average sunshine days in April:
9.3 days - Average sunshine days in May:
14.8 days - Average sunshine days in June:
17.1 days
- Average sunshine days in July:
19.1 days - Average sunshine days in August:
19.5 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
11.3 days - Average sunshine days in November:
7.5 days - Average sunshine days in December:
5.8 days
The month with the most sunshine days is August (19.5 days).
The months with the least sunshine days are March and December (5.8 days).
Average UV index
Rio das Ostras, Brazil
The month with the highest UV index is January (UV index 7).
The months with the lowest UV index are July and September (UV index 5).
Average cloud cover
Rio das Ostras, Brazil
The month with the most cloud cover is November (Cloud cover 48).
The months with the least cloud cover are February, June and July (Cloud cover 27).
Average visibility
Rio das Ostras, Brazil
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
