March weather forecast
Rio das Ostras, Brazil

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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).

Temperature

March's presence records an average high-temperature of a still warm 28°C (82.4°F), closely mirroring February's climate. During the month of March, the nighttime temperature in Rio das Ostras falls to an average of 22.7°C (72.9°F).

Heat index

For March, the heat index is evaluated at a tropical 33°C (91.4°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

In Rio das Ostras, the average relative humidity in March is 83%.

Rainfall

In Rio das Ostras, in March, it is raining for 21.7 days, with typically 82mm (3.23") of accumulated precipitation. Throughout the year, in Rio das Ostras, there are 179.7 rainfall days, and 674mm (26.54") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 25.8°C (78.4°F), March is the month with the warmest seawater in Rio das Ostras.
Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

In March, the average length of the day in Rio das Ostras is 12h and 13min.
On the first day of the month, sunrise is at 05:44 and sunset at 18:15. On the last day of March, sunrise is at 05:55 and sunset at 17:47 -03.

Sunshine

In March, the average sunshine in Rio das Ostras is 8.4h.

UV index

In March, the average daily maximum UV index in Rio das Ostras is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In March, the UV index of 6 transforms into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Alert! UV radiation becomes sharper due to reflections from sand and water.
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Frequently asked questions

How hot is it in Rio das Ostras in March?

The high-temperature, in March, in Rio das Ostras, is 28°C (82.4°F), while the low-temperature averages to 22.7°C (72.9°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 is the average humidity in March in Rio das Ostras?

The average relative humidity in March is 83%.

How much does it rain in Rio das Ostras in March?

In Rio das Ostras, in March, it is raining for 21.7 days, with typically 82mm (3.23") of accumulated precipitation.

What is the month with the warmest sea water in Rio das Ostras?

With an average sea temperature of 25.8°C (78.4°F), March is the month with the warmest seawater.

What is the water temperature in March in Rio das Ostras?

In March, the average sea temperature is 25.8°C (78.4°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Rio das Ostras have in March?

The average day length in March in Rio das Ostras, Brazil, is 12h and 13min.

What time are sunrise and sunset in March in Rio das Ostras?

On the first day of March in Rio das Ostras, sunrise is at 05:44 and sunset at 18:15. On the last day of the month, sunrise is at 05:55 and sunset at 17:47 -03.

How long on average sun shines in March in Rio das Ostras?

In Rio das Ostras, the average sunshine duration in March is 8.4h.

How high is the UV index in March in Rio das Ostras?

In March, the average daily maximum UV index in Rio das Ostras is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in March
Rio das Ostras, Brazil

Average temperature in March - Rio das Ostras, Brazil
  • Average high temperature in March: 28°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 March: 22.7°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).

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Average pressure in March
Rio das Ostras, Brazil

Average pressure in March - Rio das Ostras, Brazil
  • Average pressure in March: 1013.7mbar

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

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Average wind speed in March
Rio das Ostras, Brazil

Average wind speed in March - Rio das Ostras, Brazil
  • Average wind speed in March: 10.9km/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).

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Average humidity in March
Rio das Ostras, Brazil

Average humidity in March - Rio das Ostras, Brazil
  • Average humidity in March: 83%

The months with the highest relative humidity are November and December (84%).
The months with the lowest relative humidity are August and September (78%).

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Average rainfall in March
Rio das Ostras, Brazil

Average rainfall in March - Rio das Ostras, Brazil
  • Average rainfall in March: 82mm

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

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Average rainfall days in March
Rio das Ostras, Brazil

Average rainfall days in March - Rio das Ostras, Brazil
  • Average rainfall days in March: 21.7 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).

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Average sea temperature in March
Rio das Ostras, Brazil

Average sea temperature in March - Rio das Ostras, Brazil
  • Average sea temperature in March: 25.8°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).

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Average daylight in March /
Average sunshine in March
Rio das Ostras, Brazil

Average daylight in March / Average sunshine in March - Rio das Ostras, Brazil
  • Average daylight in March: 12h and 1min

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 March: 8h and 2min

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).

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Average sunshine days in March
Rio das Ostras, Brazil

Average sunshine days in March - Rio das Ostras, Brazil
  • Average sunshine days in March: 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).

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Average UV index in March
Rio das Ostras, Brazil

Average UV index in March - Rio das Ostras, Brazil
  • Average UV index in March: 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).

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Average cloud cover in March
Rio das Ostras, Brazil

Average cloud cover in March - Rio das Ostras, Brazil
  • Average cloud cover in March: 36

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).

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Average visibility in March
Rio das Ostras, Brazil

Average visibility in March - Rio das Ostras, Brazil
  • Average visibility in March: 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).

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Rio das Ostras, Brazil

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