Ilha Grande Temperature by Month

Ilha Grande, Rio de Janeiro State, Brazil has a consistently comfortable climate year-round, with daytime highs averaging 26°C (79°F). Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The climate in Ilha Grande remains fairly constant, offering comfortable temperatures throughout the year. Maximum daytime temperatures reach a comfortable 29°C (84°F) in February, dropping to a comfortable 24°C (75°F) in July. Nighttime lows stay between 24°C (75°F) and 19°C (66°F).

The chart below illustrates the average maximum day and minimum night temperatures in Ilha Grande by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.

The chart below shows the average temperature throughout the year:

Ilha Grande's average annual maximum temperature is 26°C (79°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.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

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.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Ilha Grande's weather, including monthly rainfall, sunshine hours, and humidity, visit our Ilha Grande climate page.