Climate averages 1991–2020
Breves weather
in September.
A hot, fairly dry month: the 2nd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Breves: daytime highs average 33.4°C and nights cool to about 24.5°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 25 mm of rain on roughly 7 days, which makes September a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 06 min on an average September day.
The nearest other city in this atlas is Cametá (126 km away). In September its highs average 33.3°C, about as warm as Breves, with 28 mm of rain.
Among the 448 cities listed in Brazil, Breves ranks joint 38th of 448 for the warmest September highs and joint 73rd of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Breves is 5.9°C warmer than that mean.
From September to October, average highs rise by 0.4°C to 33.8°C, and monthly rainfall rises from 25 mm to 33 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
Breves climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C23.6°C | 23.6°C | 250 | 28.1 | 12.212 h |
| February | 29.0°C23.3°C | 23.3°C | 326 | 27.0 | 12.212 h |
| March | 29.0°C23.3°C | 23.3°C | 397 | 30.0 | 12.112 h |
| April | 28.9°C23.4°C | 23.4°C | 373 | 28.9 | 12.112 h |
| May | 29.2°C23.6°C | 23.6°C | 286 | 27.8 | 12.012 h |
| June | 29.6°C23.7°C | 23.7°C | 144 | 21.6 | 12.012 h |
| July | 30.1°C23.6°C | 23.6°C | 84 | 16.3 | 12.012 h |
| August | 31.9°C24.1°C | 24.1°C | 39 | 9.5 | 12.112 h |
| September, selected | 33.4°C24.5°C | 24.5°C | 25 | 6.6 | 12.112 h |
| October | 33.8°C24.7°C | 24.7°C | 33 | 7.7 | 12.112 h |
| November | 33.2°C24.9°C | 24.9°C | 54 | 9.3 | 12.212 h |
| December | 31.6°C24.4°C | 24.4°C | 125 | 19.7 | 12.212 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
- Cametá in SeptemberBrazil · 126 kmHigh 33.3°C · Low 24.7°C · 28 mm rain
- Abaetetuba in SeptemberBrazil · 178 kmHigh 32.4°C · Low 24.8°C · 19 mm rain
- Moju in SeptemberBrazil · 192 kmHigh 33.4°C · Low 24.0°C · 27 mm rain
- Santana in SeptemberBrazil · 198 kmHigh 31.5°C · Low 24.7°C · 24 mm rain
- Macapá in SeptemberBrazil · 202 kmHigh 31.2°C · Low 24.8°C · 26 mm rain
- Barcarena in SeptemberBrazil · 207 kmHigh 31.7°C · Low 24.8°C · 19 mm rain
- Tailândia in SeptemberBrazil · 220 kmHigh 34.4°C · Low 24.0°C · 22 mm rain
- Belém in SeptemberBrazil · 221 kmHigh 31.7°C · Low 24.6°C · 24 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 Breves) is explained once on the Breves year overview and on the Sources, method and limits page.