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Best time to visit Ilha Grande, Brazil

Our verdict

The best time to visit Ilha Grande is April-October

Want to know when to travel to Ilha Grande? Based on criteria such as the weather, cost of flights and hotels, and peak travel periods, April-October is the best time to go to Ilha Grande. Don’t just take our word for it though… We’ve put together loads of information below to help you decide, such as a monthly breakdown of the weather, what to pack, when to fly, and much more.

The very hottest temperatures in Ilha Grande get to around 34℃ (94℉) in the height of summer. The weather at night in the winter can get down to temperatures as low as 21℃ (70℉).

If you’re keen to see the sights of Ilha Grande during the day, the sun stays up the longest around September. The wet season in Ilha Grande falls around May, so if you prefer the dryer weather, you should look to visit in September instead.

Continue reading to find out loads more about when to travel to Ilha Grande, then use the handy tools below to search for the best flight and hotel options that are right for you.

Warmest month

October

Least rainfall

September

Most daylight

September

Ilha Grande seasons

Before you continue, it’s important to know when the seasons are in Ilha Grande as they might be different to yours depending on where in the world you’re travelling from. Ilha Grande is in the Southern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer December to February
Autumn/fall March to May
Winter June to August
Spring September to November

Average temperatures in Ilha Grande

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Ilha Grande for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Ilha Grande climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Ilha Grande for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Ilha Grande in January

  • Average temperature: 27℃ (80℉)
  • Average high temperature: 32℃ (89℉)
  • Average low temperature: 23℃ (73℉)
  • Average humidity: 82%
  • Average sunny days: 5 days
  • Average rainfall: 146mm (6") over 26 days
5 days
of pure sunshine
26 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in January, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.


Ilha Grande in February

  • Average temperature: 27℃ (80℉)
  • Average high temperature: 31℃ (88℉)
  • Average low temperature: 23℃ (73℉)
  • Average humidity: 83%
  • Average sunny days: 5 days
  • Average rainfall: 136mm (5") over 23 days
5 days
of pure sunshine
23 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in February, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.


Ilha Grande in March

  • Average temperature: 27℃ (80℉)
  • Average high temperature: 31℃ (87℉)
  • Average low temperature: 23℃ (73℉)
  • Average humidity: 87%
  • Average sunny days: 3 days
  • Average rainfall: 199mm (8") over 28 days
3 days
of pure sunshine
28 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in March, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.


Ilha Grande in April

  • Average temperature: 26℃ (79℉)
  • Average high temperature: 30℃ (86℉)
  • Average low temperature: 23℃ (73℉)
  • Average humidity: 90%
  • Average sunny days: 1 days
  • Average rainfall: 237mm (9") over 28 days
1 days
of pure sunshine
28 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in April, make sure you pack t-shirts and light clothing.


Ilha Grande in May

  • Average temperature: 26℃ (78℉)
  • Average high temperature: 30℃ (85℉)
  • Average low temperature: 22℃ (72℉)
  • Average humidity: 91%
  • Average sunny days: 1 days
  • Average rainfall: 242mm (10") over 30 days
1 days
of pure sunshine
30 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in May, make sure you pack t-shirts and light clothing.


Ilha Grande in June

  • Average temperature: 25℃ (78℉)
  • Average high temperature: 30℃ (86℉)
  • Average low temperature: 22℃ (71℉)
  • Average humidity: 89%
  • Average sunny days: 1 days
  • Average rainfall: 136mm (5") over 29 days
1 days
of pure sunshine
29 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in June, make sure you pack t-shirts and light clothing.


Ilha Grande in July

  • Average temperature: 25℃ (78℉)
  • Average high temperature: 30℃ (87℉)
  • Average low temperature: 21℃ (71℉)
  • Average humidity: 86%
  • Average sunny days: 2 days
  • Average rainfall: 115mm (5") over 27 days
2 days
of pure sunshine
27 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in July, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.


Ilha Grande in August

  • Average temperature: 27℃ (80℉)
  • Average high temperature: 33℃ (91℉)
  • Average low temperature: 22℃ (72℉)
  • Average humidity: 79%
  • Average sunny days: 7 days
  • Average rainfall: 86mm (3") over 23 days
7 days
of pure sunshine
23 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in August, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.


Ilha Grande in September

  • Average temperature: 28℃ (82℉)
  • Average high temperature: 34℃ (93℉)
  • Average low temperature: 22℃ (72℉)
  • Average humidity: 76%
  • Average sunny days: 7 days
  • Average rainfall: 75mm (3") over 22 days
7 days
of pure sunshine
22 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in September, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.

Ilha Grande in October

  • Average temperature: 28℃ (82℉)
  • Average high temperature: 34℃ (92℉)
  • Average low temperature: 23℃ (74℉)
  • Average humidity: 78%
  • Average sunny days: 7 days
  • Average rainfall: 107mm (4") over 23 days
7 days
of pure sunshine
23 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in October, make sure you pack t-shirts and shorts.. It stays warm all day and night.


Ilha Grande in November

  • Average temperature: 28℃ (82℉)
  • Average high temperature: 33℃ (91℉)
  • Average low temperature: 23℃ (74℉)
  • Average humidity: 82%
  • Average sunny days: 5 days
  • Average rainfall: 152mm (6") over 24 days
5 days
of pure sunshine
24 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in November, make sure you pack t-shirts and shorts.. It stays warm all day and night.


Ilha Grande in December

  • Average temperature: 27℃ (80℉)
  • Average high temperature: 32℃ (89℉)
  • Average low temperature: 23℃ (73℉)
  • Average humidity: 82%
  • Average sunny days: 3 days
  • Average rainfall: 171mm (7") over 27 days
3 days
of pure sunshine
27 days
of showers or rain

What to pack: If you’re heading to Ilha Grande in December, make sure you pack t-shirts and shorts.. It stays pretty warm most of the time.


Top FAQs

The hottest month of the year in Ilha Grande is usually October, where temperatures tend to rise to around 34℃ (93℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Ilha Grande is generally around September. The dry season often coincides with cooler weather, so you should check the temperatures in September first to make sure it’s still a good time to go.
The rainiest time of year in Ilha Grande is generally around May, although the wetter season can sometimes extend a few months either side of May too.
If you want to get the most out of your time visiting Ilha Grande, or if you're just afraid of the dark, the days in September are usually the longest between sunrise and sunset.

Ilha Grande map