August Weather in Brazil - 2025

Brazil is among the top-rated destinations for many travelers around the world especially snowbirds and it's not hard to see why. Located in South America, the beautiful tropical climate and outgoing people make touring the country one of the most exciting adventures of a lifetime. It is the largest country in South America and is inhabited by some of the most beautiful creatures in the world plus more than 211 million people. Its capital city of Brasilia is often praised as one of the fastest-growing multicultural and ethnically diverse cities in the world as more people from around come to visit and even migrate to live in the country. The official language of Brazil is Portuguese with a few German, Italian, and English-speaking nationals. Many people in the major cities speak and understand English while locals in smaller regions may speak a bit of broken English.

Brazil has a rich history as one of the earliest inhabited places in the Americas, some of the earliest human remains which date back over 11,000 years, and pottery dating over 8,000 years indicative of complex prehistoric culture, significant populations, and sophisticated communities were found in Brazil. The country has some of the most diverse wildlife and is home to one of the largest ecosystems in the world, the Amazon river basin. The country is rich in culture, history, and natural resources including protected habitats, and ranks among the countries with the most UNESCO world heritage sites making it one of the most sought-after tourist destinations in the world.

Weather August 2025 in Brazil:

Generally, August in Brazil will be really nice, with an average temperature of around 71°F / 22°C. Due to the dry air, it will feel very comfortable. You can expect around 10 rainy days, with on average 3.5 inches / 88 mm of rain during the month of August.
Resonable comfortable (very dry air) with high temperatures

August weather in Brazil

To get a good overview of the type of weather you can expect in August in Brazil, we will look at the day and night temperature, minimum and maximum water temperature, and if August is comfortable or humid

Generally, August in Brazil will be really nice. Historical data shows that you can expect an average temperature of around 71°F / 22°C. Due to the dry air, it will feel very comfortable. During the night, it will cool down to around 53°F / 12°C.

Brazil has rainy days in August. You can expect around 10 rainy days, with on average 3.5 inches / 88 mm of rain during the whole month.

Average temperature
Average Sea temperature
Wintersun Comfort grade and huricane risk

The forecast for August 2025 is based on historical data and are averages. They will give a good indication what you can expect, but the daily temperature and rain will fluctuate during the month.

August weather in Brazil in more detail

To get a better feeling for the type of weather, you can expect in August in Brazil, we will look at the temperature, rain, wind, humidity, water temperature, and sun and clouds

- What will the temperature be in Brazil in August

Generally, you can expect in August an average temperature of 71°F / 22°C during the day and an average of 53°F / 12°C during the night. In August, during the warmest part of the afternoon, the temperature can often get as high as 87°F / 31°C, and at the end of the night, it can get as low as 39°F / 4°C.

When looking at the whole year, June and July are the coldest months, with an average temperature of around 68°F / 20°C. January and February are the hottest months, with an average temperature of around 86°F / 30°C. When comparing August with the temperature in the month before and after, this is almost equal to July, which sees an average maximum temperature of around 68°F / 20°C. And equal to September, which sees an average maximum temperature of around 71°F / 22°C.

Day and night temperature variation for Brazil during the year.
Day and night temperature variation for Brazil during the year.

But average temperatures only tell half of the story. It is also good to check the maximum and minimum temperatures. When looking at the whole year, January and December are the hottest months, with a temperature of around 96°F / 36°C. June and July are the coldest months, with a temperature of around 82°F / 28°C. When comparing August with the temperature in the month before and after, this is slightly higher than July, which sees an average maximum temperature of around 82°F / 28°C. And almost equal to September, which sees an average maximum temperature of around 89°F / 32°C.

In the following graph, you can see how many cold and hot days you can expect in Brazil each month:

Day and night temperature variation for Brazil during the year.
Day and night temperature variation for Brazil during the year.

- Can you expect rain in August in Brazil?

Generally, you can expect about 10 rain days in August, with on average 3.5 inches / 88 mm of rain.

When looking at the whole year, January is the dryest month, with an average rainfall of around 2.4 inches / 61 mmmm. July is the wettest month, with an average rainfall of around 4.8 inches / 123 mmmm. When comparing August with the month before and after, this is a lot less than July, which sees around 4.8 inches / 123 mm of rain. And a lot less than September, which sees around 4.7 inches / 120 mm of rain

Rain days for Brazil during the year.
Rain days for Brazil during the year.

If we look at the number of days with rain, May is the month with the least amount of rain days with around 10 days. February is the month with the most rain days with around 12 days. When comparing August with the month before and after, this is equal to July, which sees an average of between 10 and 11 days of rain. And almost equal to September, which sees an average of between 11 and 12 days of rain

- What will the water temperature be in Brazil for August

You can expect in August, the water temperature for Brazil to be between 84°F / 29°C and 80°F / 27°C.

To compare the water temperature we will use the maximum water temperature. You can expect this temperature on a more sunny day, close to the shore, when the wind does not mix the relatively warmer and colder water.

March has the highest water temperature, with an average of between 84°F / 29°C and 86°F / 30°C. September has the lowest water temperature, with around 82°F / 28°C. When comparing the water temperature from August with the month before and after, August has a water temperature almost equal to July, with a water temperature of an average of between 82°F / 28°C and 84°F / 29°C. And almost equal to the water temperature from September, that is around 82°F / 28°C.

Water temperature for Brazil during the year.
Water temperature for Brazil during the year.

- Can you expect in August a lot of sunny days in Brazil

Generally, you can expect around 10 sunny days in August and around 12 partly sunny days. The remaining days will be cloudy.

When looking at the whole year, November is the month with the highest number of sunny days, with an average of between 10 and 11 sunny days. June is the month with the lowest number of sunny days, with around 7 sunny days. When comparing August with the number of sunny days in the month before and after, it is almost equal to July, with around 10 sunny days. And slightly more than September, with around 7 sunny days

The number of sunny, partly sunny, and cloudy days for Brazil
The number of sunny, partly sunny, and cloudy days for Brazil

We have looked at the sunny days in Brazil. Let's also look at the cloudy or overcast days. September is the month with the highest number of cloudy days, with around 10 cloudy days. December is the month with the lowest number of cloudy days, with an average of between 4 and 5 cloudy days. When comparing August with the number of cloudy days in the month before and after, it is almost equal to July, with an average of between 9 and 10 cloudy days. And almost equal to September, with around 10 cloudy days

- Will it be comfortable in August in Brazil?

Generally, August in Brazil will have dry air, and will feel very comfortable.

We use the humidity and temperature in Brazil to calculate the Wintersun Expert Comfort level for each month. The lower the Wintersun Expert Comfort level, the more comfortable it will be. Only for certain people, extremely dry air can feel slightly uncomfortable.

When looking at the whole year, July has the lowest humidity, with a Wintersun Expert comfort level of "comfortable" (very dry air). February has the highest humidity, with a Wintersun Expert comfort level of "comfortable" (not very humid). When comparing August with the month before and after, this is almost equal to July, which has a Wintersun Comfort level of "comfortable" (very dry air). And slightly less than September, which has a Wintersun Comfort level of "very comfortable" (low humidty)

Wintersun Expert Humidity / Comfort level for Brazil
Wintersun Expert Humidity / Comfort level for Brazil

What to do in Brazil in August

Brazil has some of the most beautiful and popular attractions in the world some of which include:

  • Colonial towns - due to the heavy presence of natural resources such as Gold and Diamonds from mines surrounding towns like Ouro Preto, colonial towns in this region are a sight to behold. The churches and mansions are stunning Baroque and Rococo architectural creations that make one feel as though they have been transported back in time.
  • Modernist architecture - for all of its beautiful colonial architecture and old-world structures, Brazil also has its fair share of modern architecture. Brazil's capital city of Brasilia is filled with Avant-garde buildings and is famous for its singular architectural concept. Beautiful government buildings, as well as cathedrals, museums, and gardens can be found throughout the city and most are just a short walk away from the next.
  • Beaches - Brazil's coast is characterized by beautiful white sandy beaches separated from bustling traffic so beachgoers can truly appreciate the beauty of the crashing waves as they sunbathe, walk along the sand or dip their toes in the ocean.
  • Palaces - leftovers from when Brazil was a royal empire and the colonial seat of Portuguese royalty, there are beautiful palaces where the royal families used to live that are now open to the public for exploration.
  • Waterfalls - there are beautiful waterfalls protected by national parks where you can get captivating views of the cascading water from different angles. One of the most popular waterfalls is the Iguacu Falls which is at the point where Argentina, Brazil, and Paraguay meet. The collection of 247 waterfalls form a semicircle with some of the falls reaching over 100 meter (328 feet) high.
  • Christ The Redeemer - one of the most recognizable statues in the world, the 30 meter (98 feet) tall statue of Christ the Redeemer can be found in Rio de Janeiro, Brazil. This colossal statue sits on top of a chapel that is most often used for weddings surrounded by a wide plaza. The popular statue is at the summit of a 790 meter (2592 feet)height of Corcovado and is accessed by a 3.5 km (2 Miles)train ride.

Is it humid in Brazil in August?

A lot of people ask interested in the humidity or relative humidity for Brazil in August. But the real question they want to ask is not about humidity but the amount of moisture in the air. Or better, about comfort. Will it be comfortable in August in Brazil, or will high humidity make it uncomfortable.

To answer this question, we have to look at the dew point. Relative humidity can change a lot in Brazil during the day and night, as it changes when the amount of moisture changes and, but also when the temperature changes. It is a lot less reliable for comfort. Where the dew point only varies with the amount of moisture in the air.

Looking at the dew point, we can see that for the month of August, you can expect that Brazil will have dry air, and will feel very comfortable.

July is the month with the most comfort. It will have very dry air, and can feel somewhat uncomfortable for some people. But will be fine for most.. February is the most uncomfortable month. It will not be very humid, and will feel comfortable. In the graph, you can see that there is some difference between the most comfortable and most uncomfortable months

Humidity level for Brazil
Humidity level for Brazil

Is August a good time to go to Brazil?

Trying to answer the question of whether August is a good time to go to Brazil is not as easy as it first seems. Some people like colder weather, and others prefer a warmer climate. Some are fine with some humidity, and others are not. If your location has air conditioning, the night temperature is less important.

These are some examples. I will try to answer the question with a more generic person in mind. The more detailed information in this article should be enough to check further if this applies to you as well.

If we look at the average temperature for Brazil in August, we can see that it will be fine for most people. In August, you can expect it to be really nice, with an average temperature of around 71°F / 22°C. Due to the dry air, it will feel very comfortable. During the night, it will be around 53°F / 12°C.

The number of overcast days is more than 5, but you can still the sun with around 10 sunny days and 12 partly sunny days.

The last aspect we will look at is rain. You can expect around 10 rainy days, with on average 3.5 inches / 88 mm of rain during August. More then 5 days rain per month makes the chance higher you will see some rain during a shorter stay. But a day with rain does not mean a day you can not enjoy.

We have looked at the average day temperature, the night temperature, humidity, the number of overcast days, and the rain. We think that August a good time to go to Brazil for most visitors.

Does it rain all day in Brazil in August?

In Brazil, it does not rain all day in August. You can expect around 10 rainy days, with on average 3.5 inches / 88 mm of rain during the month.

Another way of looking at the rain is the number of sunny days. For Brazil, there are, on average 10 sunny days and 12 partly sunny days in August. That clearly shows that it is not raining all the time.

Is August the rainiest month in Brazil?

August is not the month with the most rainy days, and not the month with the most rain.

To answer what the rainiest month is in Brazil, we will both look at the month with the most rain, and the month with the highest number of rainy days.

February is the month with the the highest number of rainiest days. On average, you can expect 12 days with rain. May is the month with the lowest number of rainy days, with aproximately 10 days.

February is the month with the most rain. This is not equal as the one with the most rainy days. On average, you can expect 4.8 inches / 123 mm of rain. May is the month with the least amount of rain. This is not the same month as the one with the lowest number of rainy days. You can expect approximately 2.4 inches / 61 mm of rain.

Is August the most sunniest month in Brazil?

August is not the month with the most sunny days, not the month with the most partly sunny days, and it is not the month with the lowest number of overcast days.

To answer what the sunniest month is in Brazil, we will of course look at the month with the most sunniest days, but also look at the month with the biggest number of days that are sunny or partly sunny.

November is the month with the highest number of sunny days. On average, you can expect 10 sunny days, and 12 partly suny days. June is the month with the lowest number of sunny days.

December is the month with the highest number of sunny days and partly sunny days combined. While September is the month with the lowest number of sunny days and partly sunny days combined.

The last thing we will look at is the number of overcast days. December is the month with the lowest number of overcast days. While September is the month with the highest number of overcast days.

More information about Brazil

Weather in Brazil in other months

What to do in Brazil for each month

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