Climate averages 1991–2020
Nassau weather
in September.
A hot, wet month: the 3rd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Nassau: daytime highs average 28.8°C and nights cool to about 26.3°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 139 mm of rain on roughly 19 days, which makes September a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 19 min on an average September day.
The nearest other city in this atlas is Miami (297 km away). In September its highs average 29.1°C, about as warm as Nassau, with 156 mm of rain.
From September to October, average highs fall by 1.3°C to 27.5°C, and monthly rainfall falls from 139 mm to 135 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
Nassau climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 23.5°C21.1°C | 21.1°C | 41 | 7.2 | 10.811 h |
| February | 23.8°C21.1°C | 21.1°C | 32 | 4.8 | 11.311 h |
| March | 24.3°C21.4°C | 21.4°C | 34 | 5.9 | 12.012 h |
| April | 25.5°C22.7°C | 22.7°C | 49 | 5.8 | 12.713 h |
| May | 26.8°C24.1°C | 24.1°C | 80 | 9.0 | 13.313 h |
| June | 28.3°C25.9°C | 25.9°C | 98 | 14.5 | 13.714 h |
| July | 29.3°C26.7°C | 26.7°C | 77 | 14.2 | 13.514 h |
| August | 29.5°C26.8°C | 26.8°C | 119 | 17.0 | 13.013 h |
| September, selected | 28.8°C26.3°C | 26.3°C | 139 | 18.5 | 12.312 h |
| October | 27.5°C25.2°C | 25.2°C | 135 | 16.3 | 11.612 h |
| November | 25.7°C23.5°C | 23.5°C | 70 | 8.7 | 10.911 h |
| December | 24.4°C22.2°C | 22.2°C | 39 | 6.6 | 10.611 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
- Miami in SeptemberUnited States · 297 kmHigh 29.1°C · Low 25.4°C · 156 mm rain
- Fort Lauderdale in SeptemberUnited States · 305 kmHigh 29.3°C · Low 25.0°C · 172 mm rain
- Kendall in SeptemberUnited States · 307 kmHigh 29.6°C · Low 24.9°C · 156 mm rain
- Miami Gardens in SeptemberUnited States · 307 kmHigh 29.3°C · Low 25.3°C · 172 mm rain
- Pembroke Pines in SeptemberUnited States · 308 kmHigh 29.4°C · Low 25.2°C · 172 mm rain
- Hialeah in SeptemberUnited States · 308 kmHigh 29.7°C · Low 24.8°C · 156 mm rain
- Pompano Beach in SeptemberUnited States · 308 kmHigh 29.6°C · Low 24.8°C · 158 mm rain
- Deerfield Beach in SeptemberUnited States · 310 kmHigh 29.7°C · Low 24.6°C · 158 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 Nassau) is explained once on the Nassau year overview and on the Sources, method and limits page.