Climate averages 1991–2020
Macaé weather
in September.
A warm, moderately wet month: the 8th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Macaé: daytime highs average 25.4°C and nights cool to about 19.2°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 60 mm of rain on roughly 9 days, which makes September a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average September day.
The nearest other city in this atlas is Rio das Ostras (23 km away). In September its highs average 25.7°C, about as warm as Macaé, with 73 mm of rain.
Among the 448 cities listed in Brazil, Macaé ranks joint 323rd of 448 for the warmest September highs and joint 207th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Macaé is 2.2°C cooler than that mean.
From September to October, average highs rise by 0.8°C to 26.2°C, and monthly rainfall rises from 60 mm to 86 mm.
The annual picture
September 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
Macaé climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.0°C23.4°C | 23.4°C | 139 | 11.7 | 13.313 h |
| February | 29.4°C23.6°C | 23.6°C | 83 | 8.8 | 12.913 h |
| March | 28.3°C23.1°C | 23.1°C | 124 | 13.9 | 12.212 h |
| April | 26.9°C21.7°C | 21.7°C | 71 | 11.2 | 11.612 h |
| May | 25.0°C19.6°C | 19.6°C | 57 | 9.8 | 11.111 h |
| June | 24.5°C18.4°C | 18.4°C | 30 | 5.9 | 10.811 h |
| July | 24.2°C17.9°C | 17.9°C | 33 | 6.2 | 10.911 h |
| August | 24.6°C18.2°C | 18.2°C | 31 | 6.4 | 11.311 h |
| September, selected | 25.4°C19.2°C | 19.2°C | 60 | 9.1 | 11.912 h |
| October | 26.2°C20.4°C | 20.4°C | 86 | 10.2 | 12.613 h |
| November | 26.5°C21.3°C | 21.3°C | 154 | 14.4 | 13.213 h |
| December | 28.0°C22.6°C | 22.6°C | 149 | 14.8 | 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
September in nearby cities
- Rio das Ostras in SeptemberBrazil · 23 kmHigh 25.7°C · Low 18.9°C · 73 mm rain
- São Pedro da Aldeia in SeptemberBrazil · 60 kmHigh 23.9°C · Low 19.7°C · 56 mm rain
- Cabo Frio in SeptemberBrazil · 61 kmHigh 23.8°C · Low 20.0°C · 47 mm rain
- Nova Friburgo in SeptemberBrazil · 78 kmHigh 23.8°C · Low 15.2°C · 117 mm rain
- Araruama in SeptemberBrazil · 79 kmHigh 23.9°C · Low 19.7°C · 74 mm rain
- Campos dos Goytacazes in SeptemberBrazil · 84 kmHigh 27.1°C · Low 19.3°C · 47 mm rain
- Saquarema in SeptemberBrazil · 91 kmHigh 24.5°C · Low 19.3°C · 58 mm rain
- Itaboraí in SeptemberBrazil · 118 kmHigh 25.9°C · Low 17.4°C · 82 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 Macaé) is explained once on the Macaé year overview and on the Sources, method and limits page.