Nassau
The Bahamas
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Nassau, The Bahamas

Atlantis Resort on Paradise Island in summer, located in Nassau, the Bahamas, in the middle of the Caribbean Sea
Atlantis Resort on Paradise Island in summer, located in Nassau, the Bahamas, in the middle of the Caribbean Sea
September, the first month of the autumn, in Nassau, is still a tropical month, with average temperature fluctuating between 31.5°C (88.7°F) and 23.5°C (74.3°F).

Temperature

In Nassau, the average high-temperature is relatively the same as in August - a still tropical 31.5°C (88.7°F). In Nassau, the average low-temperature is 23.5°C (74.3°F).

Rainfall

In September, the rain falls for 17 days. Throughout September, 163.1mm (6.4") of precipitation is accumulated. In Nassau, during the entire year, the rain falls for 138 days and collects up to 1396.4mm (55") of precipitation.

Sea temperature

In September, the average sea temperature in Nassau 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.

Daylight

The average length of the day in Nassau is 12.3h.

Sunshine

In September, the average sunshine is 7.1h.

UV index

In September, the average daily maximum UV index is 10. A UV Index of 8 to 10 symbolizes a very high threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
The average daily UV index of 10 in September transform into the following instructions:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in September in Nassau?

The average high-temperature, in September, is 31.5°C (88.7°F), while the average low-temperature is 23.5°C (74.3°F).

How much does it rain in Nassau in September?

In Nassau, The Bahamas, during September, the rain falls for 17 days and regularly aggregates up to 163.1mm (6.4") of precipitation.

What is the water temperature in September in Nassau?

In Nassau, the average seawater temperature in September 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?

In September, the average length of the day in Nassau, The Bahamas, is 12.3h.

How long on average sun shines in September in Nassau?

The average sunshine in September is 7.1h.

What is the UV index reading in September in Nassau?

In September, the average daily maximum UV index in Nassau, The Bahamas, is 10. A UV Index value of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV radiation.
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).

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 lowest rainfall) is January (47.2mm).

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).
Months with the lowest number of rainy days are February and April (6 days).

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).

Average daylight in September / Average sunshine in September - Nassau, The Bahamas
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 13.7h).
The month with shortest days is December (Average daylight: 10.6h).

  • Average sunshine in September: 7.1h

The month with most sunshine is April (Average sunshine: 9.2h).
The month with least sunshine is December (Average sunshine: 6.9h).

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

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).