Climate averages 1991–2020
Itaboraí weather
in October.
A warm, wet month: the joint 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Itaboraí: daytime highs average 27.0°C and nights cool to about 19.1°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 112 mm of rain on roughly 13 days, which makes October a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 36 min on an average October day.
The nearest other city in this atlas is Maricá (20 km away). In October its highs average 27.1°C, about as warm as Itaboraí, with 72 mm of rain.
Among the 448 cities listed in Brazil, Itaboraí ranks joint 292nd of 448 for the warmest October highs and joint 228th of 448 for the driest October (rainfall, lowest first). The mean October high of those 448 cities is 28.3°C; Itaboraí is 1.2°C cooler than that mean.
From October to November, average highs stay level at 27.0°C, and monthly rainfall rises from 112 mm to 210 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Itaboraí climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C22.5°C | 22.5°C | 259 | 21.3 | 13.413 h |
| February | 30.1°C22.5°C | 22.5°C | 203 | 18.2 | 12.913 h |
| March | 28.6°C21.8°C | 21.8°C | 220 | 21.7 | 12.212 h |
| April | 27.0°C20.1°C | 20.1°C | 108 | 14.2 | 11.612 h |
| May | 24.8°C17.5°C | 17.5°C | 77 | 10.9 | 11.011 h |
| June | 24.4°C16.1°C | 16.1°C | 44 | 6.9 | 10.811 h |
| July | 24.1°C15.4°C | 15.4°C | 44 | 7.3 | 10.911 h |
| August | 24.9°C15.8°C | 15.8°C | 43 | 7.4 | 11.311 h |
| September | 25.9°C17.4°C | 17.4°C | 82 | 11.1 | 11.912 h |
| October, selected | 27.0°C19.1°C | 19.1°C | 112 | 13.4 | 12.613 h |
| November | 27.0°C20.1°C | 20.1°C | 210 | 18.7 | 13.213 h |
| December | 28.7°C21.6°C | 21.6°C | 255 | 21.6 | 13.513 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Maricá in OctoberBrazil · 20 kmHigh 27.1°C · Low 20.6°C · 72 mm rain
- Magé in OctoberBrazil · 21 kmHigh 27.4°C · Low 19.3°C · 114 mm rain
- São Gonçalo in OctoberBrazil · 22 kmHigh 27.4°C · Low 19.6°C · 114 mm rain
- Rio de Janeiro in OctoberBrazil · 38 kmHigh 28.0°C · Low 20.0°C · 92 mm rain
- Teresópolis in OctoberBrazil · 38 kmHigh 24.0°C · Low 16.2°C · 150 mm rain
- Petrópolis in OctoberBrazil · 42 kmHigh 24.8°C · Low 16.7°C · 137 mm rain
- Saquarema in OctoberBrazil · 43 kmHigh 25.4°C · Low 20.4°C · 67 mm rain
- Duque de Caxias in OctoberBrazil · 47 kmHigh 28.2°C · Low 19.8°C · 121 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Itaboraí) is explained once on the Itaboraí year overview and on the Sources, method and limits page.