Nassau, Bahamas weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: February – July, November – December
What is the weather like in Nassau, Bahamas in September?
In September, Nassau, Bahamas is hot: daytime highs average 29 °C, and even at night it stays warm at around 26 °C. The sea averages 29.4 °C – almost as warm as a bath. The sun shines for around 8 hours a day. It rains often – on about 18 days, adding up to 137 mm. The air is often humid and muggy. All in all, September is a good month for a holiday in Nassau, Bahamas.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 81 | 77 | 77 |
| Day | 30° | 29° | 28° |
| Night | 27° | 26° | 25° |
| Sea | 30° | 29° | 28° |
| Sun | 9 h | 8 h | 7 h |
| Rain days | 17 | 18 | 16 |
More details for September
- Daylight
- 12 h 20 min06:55 – 19:15
- UV index
- 10 · very highclear sky, noon (estimate)
- Muggy days
- 30 daysdew point 18 °C or more
- Wind
- 24 km/haverage daily peak
- Cloud cover
- 63 %on average
- Hot days
- 4 days30 °C or more
- Time zone
- UTC−4America/Nassau
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %83 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Nassau, Bahamas in September: quick answers
Is Nassau, Bahamas hot in September?
Yes. In September, Nassau, Bahamas is hot: daytime highs average 29 °C and nights stay around 26 °C. On about 4 days the thermometer climbs to 30 °C or more.
Can you swim in Nassau, Bahamas in September?
Yes. In September the sea averages 29.4 °C – almost as warm as a bath.
Does it rain much in Nassau, Bahamas in September?
It rains often – on about 18 days, adding up to 137 mm.
Nassau, Bahamas month by month
The whole year in Nassau, BahamasAll destinations: Bahamas
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)