Climate averages 1991–2020
Porto Seguro weather
in September.
A warm, moderately wet month: the 9th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Porto Seguro: daytime highs average 26.2°C and nights cool to about 21.2°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 51 mm of rain on roughly 11 days, which makes September a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 00 min on an average September day.
The nearest other city in this atlas is Eunápolis (56 km away). In September its highs average 26.9°C, 0.7°C warmer than Porto Seguro, with 39 mm of rain.
Among the 448 cities listed in Brazil, Porto Seguro ranks joint 280th of 448 for the warmest September highs and joint 178th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Porto Seguro is 1.3°C cooler than that mean.
From September to October, average highs rise by 1.1°C to 27.3°C, and monthly rainfall rises from 51 mm to 96 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
Porto Seguro climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.2°C23.9°C | 23.9°C | 70 | 14.7 | 13.013 h |
| February | 29.4°C24.0°C | 24.0°C | 65 | 14.9 | 12.613 h |
| March | 29.1°C23.9°C | 23.9°C | 113 | 18.8 | 12.212 h |
| April | 28.0°C23.4°C | 23.4°C | 115 | 18.8 | 11.712 h |
| May | 26.6°C22.2°C | 22.2°C | 96 | 16.8 | 11.411 h |
| June | 25.5°C21.1°C | 21.1°C | 73 | 15.6 | 11.211 h |
| July | 24.8°C20.3°C | 20.3°C | 67 | 16.7 | 11.211 h |
| August | 25.0°C20.3°C | 20.3°C | 53 | 12.8 | 11.612 h |
| September, selected | 26.2°C21.2°C | 21.2°C | 51 | 11.1 | 12.012 h |
| October | 27.3°C22.2°C | 22.2°C | 96 | 13.1 | 12.512 h |
| November | 27.7°C22.9°C | 22.9°C | 158 | 15.6 | 12.913 h |
| December | 28.8°C23.6°C | 23.6°C | 110 | 13.9 | 13.113 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
- Eunápolis in SeptemberBrazil · 56 kmHigh 26.9°C · Low 18.9°C · 39 mm rain
- Teixeira de Freitas in SeptemberBrazil · 141 kmHigh 27.4°C · Low 19.2°C · 33 mm rain
- Ilhéus in SeptemberBrazil · 184 kmHigh 26.0°C · Low 20.9°C · 61 mm rain
- Itapetinga in SeptemberBrazil · 184 kmHigh 27.4°C · Low 18.7°C · 29 mm rain
- Itabuna in SeptemberBrazil · 186 kmHigh 26.1°C · Low 19.5°C · 53 mm rain
- Vitória da Conquista in SeptemberBrazil · 259 kmHigh 25.6°C · Low 15.6°C · 13 mm rain
- São Mateus in SeptemberBrazil · 266 kmHigh 26.5°C · Low 20.0°C · 54 mm rain
- Teófilo Otoni in SeptemberBrazil · 303 kmHigh 28.2°C · Low 18.4°C · 25 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 Porto Seguro) is explained once on the Porto Seguro year overview and on the Sources, method and limits page.