Climate averages 1991–2020
Rio Largo weather
in September.
A warm, moderately wet month: the 9th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Rio Largo: daytime highs average 26.5°C and nights cool to about 21.1°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 65 mm of rain on roughly 19 days, which makes September a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average September day.
The nearest other city in this atlas is Maceió (25 km away). In September its highs average 26.4°C, about as warm as Rio Largo, with 68 mm of rain.
Among the 448 cities listed in Brazil, Rio Largo ranks joint 264th of 448 for the warmest September highs and joint 232nd of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Rio Largo is 1.0°C cooler than that mean.
From September to October, average highs rise by 1.4°C to 27.9°C, and monthly rainfall falls from 65 mm to 49 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
Rio Largo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C23.3°C | 23.3°C | 55 | 15.3 | 12.613 h |
| February | 29.7°C23.5°C | 23.5°C | 57 | 15.9 | 12.412 h |
| March | 29.7°C23.5°C | 23.5°C | 71 | 18.2 | 12.212 h |
| April | 28.9°C23.2°C | 23.2°C | 109 | 20.7 | 11.912 h |
| May | 27.6°C22.5°C | 22.5°C | 149 | 24.0 | 11.712 h |
| June | 26.3°C21.6°C | 21.6°C | 171 | 25.2 | 11.612 h |
| July | 25.5°C20.9°C | 20.9°C | 160 | 25.8 | 11.612 h |
| August | 25.7°C20.6°C | 20.6°C | 100 | 23.4 | 11.812 h |
| September, selected | 26.5°C21.1°C | 21.1°C | 65 | 18.8 | 12.012 h |
| October | 27.9°C22.0°C | 22.0°C | 49 | 15.7 | 12.312 h |
| November | 29.1°C22.6°C | 22.6°C | 33 | 11.8 | 12.513 h |
| December | 29.7°C23.2°C | 23.2°C | 30 | 11.5 | 12.713 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
- Maceió in SeptemberBrazil · 25 kmHigh 26.4°C · Low 22.6°C · 68 mm rain
- Arapiraca in SeptemberBrazil · 94 kmHigh 27.4°C · Low 19.9°C · 29 mm rain
- Garanhuns in SeptemberBrazil · 97 kmHigh 24.1°C · Low 16.1°C · 30 mm rain
- Caruaru in SeptemberBrazil · 134 kmHigh 26.6°C · Low 18.6°C · 19 mm rain
- Belo Jardim in SeptemberBrazil · 142 kmHigh 27.8°C · Low 18.2°C · 8.2 mm rain
- Gravatá in SeptemberBrazil · 146 kmHigh 26.0°C · Low 19.2°C · 51 mm rain
- Ipojuca in SeptemberBrazil · 148 kmHigh 26.8°C · Low 22.2°C · 58 mm rain
- Cabo de Santo Agostinho in SeptemberBrazil · 160 kmHigh 26.1°C · Low 22.8°C · 65 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 Rio Largo) is explained once on the Rio Largo year overview and on the Sources, method and limits page.