Climate averages 1991–2020
Santana weather
in September.
A hot, fairly dry month: the 3rd warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Santana: daytime highs average 31.5°C and nights cool to about 24.7°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 24 mm of rain on roughly 9 days, which makes September a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 07 min on an average September day.
The nearest other city in this atlas is Macapá (15 km away). In September its highs average 31.2°C, about as warm as Santana, with 26 mm of rain.
Among the 448 cities listed in Brazil, Santana ranks joint 82nd of 448 for the warmest September highs and joint 70th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Santana is 4.0°C warmer than that mean.
From September to October, average highs rise by 0.7°C to 32.3°C, and monthly rainfall falls from 24 mm to 18 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
Santana climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.8°C23.5°C | 23.5°C | 229 | 27.1 | 12.112 h |
| February | 28.3°C23.3°C | 23.3°C | 281 | 26.2 | 12.112 h |
| March | 28.4°C23.3°C | 23.3°C | 335 | 28.7 | 12.112 h |
| April | 28.4°C23.4°C | 23.4°C | 350 | 28.8 | 12.112 h |
| May | 28.6°C23.6°C | 23.6°C | 324 | 29.4 | 12.112 h |
| June | 28.9°C23.6°C | 23.6°C | 172 | 26.5 | 12.112 h |
| July | 29.3°C23.6°C | 23.6°C | 127 | 24.9 | 12.112 h |
| August | 30.4°C24.3°C | 24.3°C | 59 | 16.5 | 12.112 h |
| September, selected | 31.5°C24.7°C | 24.7°C | 24 | 8.5 | 12.112 h |
| October | 32.3°C24.9°C | 24.9°C | 18 | 5.0 | 12.112 h |
| November | 32.0°C24.9°C | 24.9°C | 31 | 7.3 | 12.112 h |
| December | 30.4°C24.3°C | 24.3°C | 105 | 19.3 | 12.112 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
- Macapá in SeptemberBrazil · 15 kmHigh 31.2°C · Low 24.8°C · 26 mm rain
- Breves in SeptemberBrazil · 198 kmHigh 33.4°C · Low 24.5°C · 25 mm rain
- Cametá in SeptemberBrazil · 308 kmHigh 33.3°C · Low 24.7°C · 28 mm rain
- Abaetetuba in SeptemberBrazil · 316 kmHigh 32.4°C · Low 24.8°C · 19 mm rain
- Barcarena in SeptemberBrazil · 327 kmHigh 31.7°C · Low 24.8°C · 19 mm rain
- Belém in SeptemberBrazil · 336 kmHigh 31.7°C · Low 24.6°C · 24 mm rain
- Moju in SeptemberBrazil · 337 kmHigh 33.4°C · Low 24.0°C · 27 mm rain
- Ananindeua in SeptemberBrazil · 345 kmHigh 32.0°C · Low 24.1°C · 39 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 Santana) is explained once on the Santana year overview and on the Sources, method and limits page.