August weather forecast
Rio das Ostras, Brazil

August

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).

Temperature

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). Throughout August, Rio das Ostras experiences a low-temperature average of 18.3°C (64.9°F).

Humidity

August and September, with an average relative humidity of 78%, are the least humid months.

Rainfall

In Rio das Ostras, during August, the rain falls for 8.9 days and regularly aggregates up to 22mm (0.87") of precipitation. Throughout the year, there are 179.7 rainfall days, and 674mm (26.54") of precipitation is accumulated.

Sea temperature

In Rio das Ostras, the average seawater temperature in August is 22.4°C (72.3°F).
Note: Your comfort in 22.4°C (72.3°F) waters hinges on your relationship with the cold, today's sunny disposition, wind patterns, and the air's temperature. For context, Olympic swimmers are no strangers to waters of 25°C (77°F) to 28°C (82.4°F).

Daylight

In Rio das Ostras, the average length of the day in August is 11h and 22min.
On the first day of the month, sunrise is at 06:20 and sunset at 17:27. On the last day of August, in Rio das Ostras, sunrise is at 05:58 and sunset at 17:37 -03.

Sunshine

The average sunshine in August in Rio das Ostras is 8.2h.

UV index

The average daily maximum UV index in August in Rio das Ostras is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during August leads to these instructions:
Take precautions against overexposure. Protection against sun damage is needed. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Caution! The Sun's UV rays become stronger due to reflections from water and sand.

Frequently asked questions

What is the usual temperature for Rio das Ostras in August?
In August, in Rio das Ostras, the average high-temperature is 24.3°C (75.7°F), and the average low-temperature is 18.3°C (64.9°F). In March, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 33°C (91.4°F).
What are the least humid months in Rio das Ostras?
August and September, with an average relative humidity of 78%, are the least humid months.
What is the average humidity in August in Rio das Ostras?
In Rio das Ostras, the average relative humidity in August is 78%.
How much does it rain in Rio das Ostras in August?
In Rio das Ostras, during August, the rain falls for 8.9 days and regularly aggregates up to 22mm (0.87") of precipitation.
What is the water temperature in August in Rio das Ostras?
In Rio das Ostras, in August, the average water temperature is 22.4°C (72.3°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 22.4°C (72.3°F) water may be enjoyable.
How many hours of daylight does Rio das Ostras have in August?
In Rio das Ostras, Brazil, the average day length in August is 11h and 22min.
What time are sunrise and sunset in August in Rio das Ostras?
In August, on the first day of the month, sunrise is at 06:20 and sunset at 17:27. On the last day of the month, in Rio das Ostras, Brazil, sunrise is at 05:58 and sunset at 17:37 -03.
How many hours of sunshine does Rio das Ostras have in August?
In August, the average sunshine duration in Rio das Ostras is 8.2h.
What is the UV index reading in August in Rio das Ostras?
In Rio das Ostras, Brazil, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in August
Rio das Ostras, Brazil
  • Average high temperature in August: 24.3°C

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).

  • Average low temperature in August: 18.3°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 in August
Rio das Ostras, Brazil
  • Average pressure in August: 1020.3mbar

The month with the highest atmospheric pressure is July (1020.7mbar).
The month with the lowest atmospheric pressure is December (1012mbar).

Average wind speed in August
Rio das Ostras, Brazil
  • Average wind speed in August: 14.9km/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 in August
Rio das Ostras, Brazil
  • Average humidity in August: 78%

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 in August
Rio das Ostras, Brazil
  • Average rainfall in August: 22mm

The wettest month (with the highest rainfall) is November (108mm).
The driest month (with the least rainfall) is June (18mm).

Average rainfall days in August
Rio das Ostras, Brazil
  • Average rainfall days in August: 8.9 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 in August
Rio das Ostras, Brazil
  • Average sea temperature in August: 22.4°C

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 in August /
Average sunshine in August
Rio das Ostras, Brazil
  • Average daylight in August: 11h and 2min

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 August: 8h and 1min

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 in August
Rio das Ostras, Brazil
  • Average sunshine days in August: 19.5 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 in August
Rio das Ostras, Brazil
  • Average UV index in August: 6

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 in August
Rio das Ostras, Brazil
  • Average cloud cover in August: 29

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 in August
Rio das Ostras, Brazil
  • Average visibility in August: 10km

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).

englishespañol中文
Share