Nassau Weather in September

Nassau in September sees high daytime temperatures of 30°C (86°F) and nighttime lows of 27°C (81°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.

Rainfall in Nassau in September

Prepare for the wettest month with an umbrella to protect yourself from frequent rain. Past climate data indicates that roughly 23 days will see rain, totalling around 148 mm (5.8 in) for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in Nassau in September

Daytime highs in Nassau in September reach 30°C (86°F), with nights around 27°C (81°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 27°C (81°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.

Sunshine in Nassau in September

The city usually sees around 213 hours of sunlight, indicating many sunny days — a great month for sightseeing.

Wind Speed in Nassau in September

Average wind conditions reach 6 m/s (12 knots) in September. This creates notably windy weather that is clearly felt and can influence daily activities. Keep in mind this is an average. Some days are less intense, while others can be quite gusty.

Average water temperature in September

At 28°C (82°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

September in Nassau can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• October
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• December

For a detailed overview over the year and the best time to visit the Bahamas, check out our Nassau's climate page.

Nassau Temperature in September

Min Temperature 27°C (81°F)  

Max Temperature 30°C (86°F)  

Water Temperature 28°C (82°F)  

Chance of Rain 77%  

Precipitation 148 mm (5.8 in)  

Rainy days 23 days  

Humidity 81%  

Windspeed 6 m/s (12 knots)  

Sunshine 213 hours  

Percentage Sunshine  

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Nassau typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 25°C (77°F).

Average temperatures in September

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Daily Historical Precipitation

49-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Historical weather for Nassau in September

Browse day-by-day weather records for Nassau spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Nassau historical weather extremes in September

Based on 26 years of weather observations (1999-2025), these are the most extreme conditions recorded in Nassau.

• On September 2, 2005, temperatures climbed to 36°C (97°F), marking the warmest September day on record.
• The coldest September day was on September 11, 2020, with a maximum of 26°C (79°F).
• The coldest night in September in Nassau was on September 19, 2016, with a minimum of 20°C (68°F).

What to Wear in Nassau in September

Warm but pleasant conditions in Nassau in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 28°C (82°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Nassau in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

7/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the Bahamas, check out our Nassau's climate page.

More climate data for Nassau

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Nassau climate overview or explore weather in the Bahamas.