Barra de São João Temperature by Month
Barra de São João in Rio de Janeiro State, Brazil enjoys a stable climate, with daytime temperatures staying close to 28°C (82°F) throughout the year. Explore the full monthly breakdown below.
Barra de São João Monthly Temperatures
The climate in Barra de São João remains fairly constant, offering comfortable temperatures throughout the year. Maximum daytime temperatures reach a very warm 31°C (88°F) in February, dropping to a comfortable 26°C (79°F) in July. Nighttime lows stay between 24°C (75°F) and 18°C (64°F).
The chart below illustrates the average maximum day and minimum night temperatures in Barra de São João by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM.
The chart below shows the average temperature throughout the year:
Temperature: Barra de São João vs Brazil
The map below shows the annual temperature across Brazil. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Barra de São João vs World: Temperature Compared
Barra de São João's average annual maximum temperature is 28°C (82°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Barra de São João?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Barra de São João, July is the coolest month, with average highs of 26°C (79°F) and humidity around 80% — considered very high. In February, the warmest month, temperatures average 31°C (88°F) with 82% humidity — conditions that feel very high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Barra de São João's weather — including monthly rainfall, sunshine hours, and humidity — visit our Barra de São João climate page.
