September weather forecast
Nassau, The Bahamas

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Atlantis Resort on Paradise Island, located in Nassau, the Bahamas, in the middle of the Caribbean Sea
Atlantis Resort on Paradise Island, located in Nassau, the Bahamas, in the middle of the Caribbean Sea

Weather in September

As summer begins its retreat in September, Nassau sees a marginal dip in temperatures. The days remain long, characterizing the city's pleasant tropical climate. The average rainfall stands at 163mm (6.42"), continuing the trend of wet summer months. Despite the shift towards autumn, September keeps up with Nassau's lively spirit. The city shimmers under the warm sun, taking full advantage of the last moments of summer.

Temperature

Nassau's weather in September, with an average high-temperature of a still hot 31.5°C (88.7°F), subtly shifts from August's 32.1°C (89.8°F). Nassau, during the month of September, experiences an average low-temperature of 23.5°C (74.3°F).

Rainfall

In Nassau, in September, it is raining for 17 days, with typically 163mm (6.42") of accumulated precipitation. Throughout the year, in Nassau, there are 138 rainfall days, and 1396mm (54.96") of precipitation is accumulated.

Sea temperature

In Nassau, in September, the average water temperature is 29.6°C (85.3°F).
Note: For any water activity, surface water temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed perfect and extremely pleasing for enduring enjoyment.

Daylight

The average length of the day in September in Nassau is 12h and 17min.
On the first day of September, sunrise is at 06:50 and sunset at 19:27. On the last day of the month, sunrise is at 07:01 and sunset at 18:56 EDT.

Sunshine

In Nassau, The Bahamas, the average sunshine in September is 7.1h.

UV index

In Nassau, the average daily maximum UV index in September is 10. A UV Index value of 8 to 10 symbolizes a very high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 10 in September, converts into the following recommendations:
Always use protective measures; unprotected skin might suffer damage in a short span. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Even under cloud cover, use sunscreen with at least an SPF 30 generously and reapply frequently post every swim or outdoor exercise. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.
Updated: Jan 30, 2024 | Published by: Weather Atlas | Resources

Frequently asked questions

Is it hot in Nassau during September?

Nassau in September has an average high-temperature of 31.5°C (88.7°F) and an average low-temperature of 23.5°C (74.3°F).

How much does it rain in Nassau in September?

In Nassau, The Bahamas, in September, it is raining for 17 days, with typically 163mm (6.42") of accumulated precipitation.

How warm is the water in September in Nassau?

In Nassau, The Bahamas, in September, the average water temperature is 29.6°C (85.3°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Nassau have in September?

The average day length in September is 12h and 17min.

What time are sunrise and sunset in September in Nassau?

On the first day of September in Nassau, The Bahamas, sunrise is at 06:50 and sunset at 19:27. On the last day of the month, sunrise is at 07:01 and sunset at 18:56 EDT.

How long on average sun shines in September in Nassau?

The average sunshine duration in September is 7.1h.

What is the UV index intensity in September in Nassau?

In September, the average daily maximum UV index is 10. A UV Index estimate of 8 to 10 represents a very high health risk from exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Nassau, The Bahamas

Average temperature in September - Nassau, The Bahamas
  • Average high temperature in September: 31.5°C

The warmest month (with the highest average high temperature) is August (32.1°C).
The month with the lowest average high temperature is January (25.6°C).

  • Average low temperature in September: 23.5°C

The month with the highest average low temperature is July (24.7°C).
The coldest month (with the lowest average low temperature) is January (17.1°C).

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Average rainfall in September
Nassau, The Bahamas

Average rainfall in September - Nassau, The Bahamas
  • Average rainfall in September: 163.1mm

The wettest month (with the highest rainfall) is August (235.5mm).
The driest month (with the least rainfall) is January (47.2mm).

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Average rainfall days in September
Nassau, The Bahamas

Average rainfall days in September - Nassau, The Bahamas
  • Average rainfall days in September: 17 days

The month with the highest number of rainy days is August (19 days).
The months with the least rainy days are February and April (6 days).

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Average sea temperature in September
Nassau, The Bahamas

Average sea temperature in September - Nassau, The Bahamas
  • Average sea temperature in September: 29.6°C

The best month for swimming (with the highest average sea temperature) is August (30°C).
The coldest month (with the lowest average sea temperature) is February (23.3°C).

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Average daylight in September /
Average sunshine in September
Nassau, The Bahamas

Average daylight in September / Average sunshine in September - Nassau, The Bahamas
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in September: 7h and 1min

The month with the most sunshine is April (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

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Average UV index in September
Nassau, The Bahamas

Average UV index in September - Nassau, The Bahamas
  • Average UV index in September: 10

The months with the highest UV index are April, May, June, July and August (UV index 11).
The month with the lowest UV index is December (UV index 5).

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Nassau, The Bahamas

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