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Itaguaí Weather and Climate: A Comprehensive Guide

Itaguaí has a steady warm climate throughout the year. It is also known for its large amounts of rainfall. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

In Itaguaí temperatures are generally consistent throughout the year. Typically, average maximum daytime temperatures range from a very warm 31°C in February to a comfortable 25°C in the coolest month, July.

Nights are cooler, with lows often dropping to around 17°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Itaguaí experiences significant rainfall throughout the year, averaging 1632 mm of precipitation annually. The climate in Itaguaí shows significant variation throughout the year. Expect heavy rainfall in January, with an average of 259 mm of precipitation over 20 rainy days.

In contrast, August offers drier and sunnier days, with around 45 mm of rainfall over 9 rainy days. For more details, please visit our Itaguaí Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Itaguaí offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between January (7.1 hours daily) and September (4.8 hours daily) provides a bit of variety for visitors and residents. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Rio de Janeiro, Brazil (62 KM, 38 Miles).

Daily hours of sunshine

Data from: Rio de Janeiro, Brazil (62 KM, 38 Miles).

Forecast for Itaguaí

Sun   Dec 22
30°C | 23°C
S 5 m/s
5.9 mm
broken clouds and thunder

broken clouds and thunder

Mon   Dec 23
28°C | 23°C
SW 5 m/s
5.4 mm
broken clouds and rain

broken clouds and rain

Tue   Dec 24
29°C | 23°C
S 5 m/s
7.1 mm
broken clouds and rain

broken clouds and rain

The best time of year to visit Itaguaí in Brazil

During the months of June, July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is the rainy season in Itaguaí?
    Rainy season in Itaguaí occurs in the months of January, February, March, November and December.
  • Which is the warmest month in Itaguaí?
    February has an average maximum temperature of 31°C and is the warmest month of the year.
  • Which is the coldest month in Itaguaí?
    The coldest month is July with an average maximum temperature of 25°C.
  • Which is the wettest month in Itaguaí?
    January tops the wettest month list with 259 mm of rainfall.
  • Which is the driest month in Itaguaí?
    August is the driest month with 45 mm of precipitation.
  • Which is the sunniest month in Itaguaí?
    January is the sunniest month with an average of 212 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.