Climate averages 1991–2020
Parnamirim weather
in September.
A hot, fairly dry month: the joint 8th warmest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Parnamirim: daytime highs average 28.5°C and nights cool to about 22.9°C. By daytime temperature it is the joint 8th warmest of the 12 months.
Expect about 18 mm of rain on roughly 7 days, which makes September a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 04 min on an average September day.
The nearest other city in this atlas is Macaíba (12 km away). In September its highs average 29.5°C, 1.0°C warmer than Parnamirim, with 31 mm of rain.
Among the 448 cities listed in Brazil, Parnamirim ranks joint 165th of 448 for the warmest September highs and joint 58th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Parnamirim is 1.0°C warmer than that mean.
From September to October, average highs rise by 0.8°C to 29.3°C, and monthly rainfall falls from 18 mm to 13 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
Parnamirim climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.8°C24.4°C | 24.4°C | 55 | 15.4 | 12.412 h |
| February | 29.7°C24.5°C | 24.5°C | 73 | 16.4 | 12.312 h |
| March | 29.5°C24.5°C | 24.5°C | 110 | 20.9 | 12.112 h |
| April | 28.9°C24.3°C | 24.3°C | 136 | 22.0 | 12.012 h |
| May | 28.5°C24.0°C | 24.0°C | 104 | 19.3 | 11.812 h |
| June | 27.5°C23.2°C | 23.2°C | 106 | 18.6 | 11.812 h |
| July | 26.9°C22.5°C | 22.5°C | 87 | 17.3 | 11.812 h |
| August | 27.5°C22.4°C | 22.4°C | 32 | 11.0 | 11.912 h |
| September, selected | 28.5°C22.9°C | 22.9°C | 18 | 7.2 | 12.112 h |
| October | 29.3°C23.7°C | 23.7°C | 13 | 5.2 | 12.212 h |
| November | 29.7°C24.2°C | 24.2°C | 13 | 5.2 | 12.412 h |
| December | 29.9°C24.5°C | 24.5°C | 25 | 9.6 | 12.512 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
- Macaíba in SeptemberBrazil · 12 kmHigh 29.5°C · Low 22.9°C · 31 mm rain
- Natal in SeptemberBrazil · 15 kmHigh 28.1°C · Low 23.3°C · 31 mm rain
- Ceará-Mirim in SeptemberBrazil · 36 kmHigh 29.0°C · Low 23.0°C · 12 mm rain
- Santa Rita in SeptemberBrazil · 137 kmHigh 28.2°C · Low 22.8°C · 34 mm rain
- João Pessoa in SeptemberBrazil · 140 kmHigh 27.4°C · Low 22.8°C · 37 mm rain
- Campina Grande in SeptemberBrazil · 161 kmHigh 27.9°C · Low 19.0°C · 13 mm rain
- Goiana in SeptemberBrazil · 185 kmHigh 27.9°C · Low 22.3°C · 36 mm rain
- Carpina in SeptemberBrazil · 215 kmHigh 27.4°C · Low 20.5°C · 31 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 Parnamirim) is explained once on the Parnamirim year overview and on the Sources, method and limits page.