Nova Iguaçu climate
Nova Iguaçu (Rio de Janeiro, Brazil) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 24 °C75 °F, and about 1,522 mm60 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Nova Iguaçu climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2985 | 2374 | 2679 | 2138.4 |
| Feb | 2985 | 2374 | 2680 | 1787.0 |
| Mar | 2983 | 2374 | 2679 | 1827.2 |
| Apr | 2781 | 2271 | 2576 | 1094.3 |
| May | 2578 | 1967 | 2272 | 702.8 |
| Jun | 2577 | 1865 | 2271 | 481.9 |
| Jul | 2576 | 1763 | 2170 | 451.8 |
| Aug | 2678 | 1763 | 2171 | 411.6 |
| Sep | 2680 | 1865 | 2272 | 722.8 |
| Oct | 2781 | 2068 | 2374 | 1174.6 |
| Nov | 2781 | 2169 | 2475 | 2178.5 |
| Dec | 2883 | 2272 | 2578 | 2319.1 |
| Year | 2985 | 1763 | 2475 | 1,52260 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 82% | 71% | 5.8 | 13:23 |
| Feb | 81% | 62% | 6.0 | 12:53 |
| Mar | 82% | 66% | 5.1 | 12:17 |
| Apr | 81% | 56% | 4.5 | 11:35 |
| May | 80% | 56% | 3.7 | 11:02 |
| Jun | 80% | 49% | 3.5 | 10:45 |
| Jul | 78% | 45% | 3.6 | 10:52 |
| Aug | 76% | 45% | 4.3 | 11:20 |
| Sep | 76% | 57% | 4.6 | 11:00 |
| Oct | 78% | 70% | 5.0 | 12:40 |
| Nov | 81% | 79% | 5.0 | 13:15 |
| Dec | 82% | 75% | 5.6 | 13:31 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Nova Iguaçu is like
The warmest month is February, with an average high of 29 °C85 °F and a low of 23 °C74 °F. The coldest is July, when highs average 25 °C76 °F and lows 17 °C63 °F. Seasonal differences are small — just 5.5 °C9.9 °F between the warmest and the coolest month.
It is wet, with about 1,522 mm60 in of precipitation per year. The wettest three-month stretch is November–January, which brings 43% of the annual total. The wettest month is December (231 mm9.1 in), the driest is August (41 mm1.6 in).
Relative humidity ranges from 76% in September to 82% in December. The clearest skies (lowest average cloud amount, 45%) are typical of July. Average wind speed near the ground ranges from 8 km/h (5 mph) in March to 10 km/h (6 mph) in September. Daylight lasts from about 10.7 hours in June to 13.5 hours in December.
Best time to visit Nova Iguaçu
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–September: average highs of 25 °C76 °F to 26 °C80 °F with 41 mm1.6 in to 72 mm2.8 in of precipitation per month.
The most challenging month is December, which is very wet (231 mm9.1 in) and humid (82% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Nova Iguaçu
- Wetter months (November–March) — highs 2781 to 29 °C85 °F, lows 2169 to 23 °C74 °F, about 204 mm8.0 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (April–October) — highs 2576 to 27 °C81 °F, lows 1763 to 22 °C71 °F, about 72 mm2.8 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Nova Iguaçu compares
Compared with Rio de Janeiro, about 32 km to the southeast, Nova Iguaçu has practically the same average temperature and receives a similar amount of precipitation.
Of the 223 places in Brazil covered by World Climates, Nova Iguaçu is the 111th warmest by annual mean temperature and the 49th wettest by annual precipitation. See all of them on the Brazil climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): West Palm Beach (United States, Am), Avarua (Cook Islands, Af) and Nukualofa (Tonga, Af).
The same NASA POWER grid cell also contains Itaguaí (pop. 123,980). Their long-term averages in this dataset are essentially the same as for Nova Iguaçu, so they do not have separate pages.
Nearby places
- Queimados 12 km · 25 °C76 °F · 1,303 mm51 in
- Rio de Janeiro 32 km · 24 °C75 °F · 1,469 mm58 in
- Petrópolis 40 km · 19 °C67 °F · 1,357 mm53 in
- Itaboraí 61 km · 24 °C76 °F · 1,357 mm53 in
- Maricá 67 km · 24 °C75 °F · 1,469 mm58 in
- Volta Redonda 72 km · 23 °C73 °F · 1,378 mm54 in
- Angra dos Reis 93 km · 24 °C76 °F · 1,476 mm58 in
- Nova Friburgo 108 km · 19 °C66 °F · 1,336 mm53 in
Frequently asked questions
What is the warmest month in Nova Iguaçu?
February is the warmest month in Nova Iguaçu, with an average high of 29 °C (85 °F) and an average low of 23 °C (74 °F).
What is the coldest month in Nova Iguaçu?
July is the coldest month, with an average high of 25 °C (76 °F) and an average low of 17 °C (63 °F).
When does it rain the most in Nova Iguaçu?
December is the wettest month with about 231 mm (9.1 in) of precipitation; August is the driest with about 41 mm (1.6 in).
What is the best time to visit Nova Iguaçu?
Judging by long-term averages, the most comfortable months are May–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 100 m, while Nova Iguaçu lies at about 36 m. Temperatures on this page were therefore adjusted by +0.4 °C0.8 °F using the standard lapse rate of 6.5 °C per 1,000 m.