Nassau Weather in September

September continues with the wet weather at Nassau, Bahamas. This is the Caribbean city's most humid month. Plus it's the time of year when tropical storms are most active.

This page gives detailed information on the typical September temperature, rain, sun, humidity, wind and storms for Nassau.

The numbers here are historical averages based on climate data gathered at the Lynden Pindling International Airport, located west of Nassau on New Providence Island.

Temperature Weather iconTemperature

89 °F September average high 32 °C
74 °F September average low 24 °C

Daytime temperatures usually climb no higher than 93 degrees Fahrenheit (34 degrees Celsius).

Nighttime temperatures only rarely get as cool as 60 °F (15 °C).

Rainy Weather iconRain

6.4 in total precipitation 163 mm
17 days of rain

The rainy season carries on into September, bringing frequent and abundant rainfall.

Sunny Weather iconSun

58 % sunshine
213 hours of sun

The sun's rays reach the ground at Nassau during 58 percent of daylight hours on average in September, for a total of 213 hours in the month.

Daylight in September at Nassau lasts an average of 12 hours and 16 minutes a day. The longest day of the month is the 1st with 12 hours and 37 minutes of daylight. By the end of the month, the days have shortened to 11:55 from sunrise to sunset. These durations can vary by a minute or two from year to year.

Humid Weather iconHumidity

81 % September average humidity

September is Nassau's most humid month.

Windy Weather iconWind

13.9 mph September wind speed average 22.3 kph

Overall, September is the least windy month for Nassau.

Stormy Weather iconStorms

16 % chance a tropical storm approaches
6 % likelihood of a hurricane in September

Tropical storms and hurricanes are most likely to be active near Nassau during September. There's a 16 percent probability that a named tropical storm will approach within 100 miles (165 km) of the city this month. The chance of a major category 3 to 5 hurricane reaching the area is 2 percent.


These weather data are long-term historical averages provided by The Bahamas Department of Meteorology and World Meteorological Organization. The temperature and precipitation numbers are 1971-2000 normals while the sun, humidity and wind statistics are 1961-1990 normals. The named storm probabilities come from the Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division.

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