Climate averages 1991–2020
São Gonçalo 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 São Gonçalo: daytime highs average 27.4°C and nights cool to about 19.6°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 114 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 Rio de Janeiro (16 km away). In October its highs average 28.0°C, 0.6°C warmer than São Gonçalo, with 92 mm of rain.
Among the 448 cities listed in Brazil, São Gonçalo ranks joint 268th of 448 for the warmest October highs and joint 237th of 448 for the driest October (rainfall, lowest first). The mean October high of those 448 cities is 28.3°C; São Gonçalo is 0.9°C cooler than that mean.
From October to November, average highs stay level at 27.4°C, and monthly rainfall rises from 114 mm to 204 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
São Gonçalo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.1°C23.0°C | 23.0°C | 244 | 20.4 | 13.413 h |
| February | 30.5°C23.1°C | 23.1°C | 183 | 17.0 | 12.913 h |
| March | 29.0°C22.4°C | 22.4°C | 205 | 19.6 | 12.212 h |
| April | 27.3°C20.8°C | 20.8°C | 101 | 13.2 | 11.612 h |
| May | 25.0°C18.3°C | 18.3°C | 75 | 10.5 | 11.011 h |
| June | 24.6°C17.1°C | 17.1°C | 48 | 7.0 | 10.811 h |
| July | 24.3°C16.4°C | 16.4°C | 49 | 7.2 | 10.911 h |
| August | 25.3°C16.8°C | 16.8°C | 44 | 7.3 | 11.311 h |
| September | 26.3°C18.1°C | 18.1°C | 85 | 10.7 | 11.912 h |
| October, selected | 27.4°C19.6°C | 19.6°C | 114 | 13.3 | 12.613 h |
| November | 27.4°C20.5°C | 20.5°C | 204 | 18.0 | 13.213 h |
| December | 29.1°C22.1°C | 22.1°C | 229 | 19.9 | 13.514 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
- Rio de Janeiro in OctoberBrazil · 16 kmHigh 28.0°C · Low 20.0°C · 92 mm rain
- Magé in OctoberBrazil · 19 kmHigh 27.4°C · Low 19.3°C · 114 mm rain
- Itaboraí in OctoberBrazil · 22 kmHigh 27.0°C · Low 19.1°C · 112 mm rain
- Maricá in OctoberBrazil · 26 kmHigh 27.1°C · Low 20.6°C · 72 mm rain
- Duque de Caxias in OctoberBrazil · 27 kmHigh 28.2°C · Low 19.8°C · 121 mm rain
- Belford Roxo in OctoberBrazil · 36 kmHigh 28.4°C · Low 20.0°C · 96 mm rain
- Barra da Tijuca in OctoberBrazil · 37 kmHigh 28.5°C · Low 20.5°C · 92 mm rain
- Petrópolis in OctoberBrazil · 38 kmHigh 24.8°C · Low 16.7°C · 137 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 São Gonçalo) is explained once on the São Gonçalo year overview and on the Sources, method and limits page.
Magé lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.