Harbour Island Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Harbour Island.
Climate overview of Harbour Island
Harbour Island, Harbour Island, Bahamas, has a stable climate with little temperature variation across the year. Average daytime temperatures hover around 27°C (81°F), peaking in August at 30°C (86°F) and dipping in January to 24°C (75°F).
The city receives considerable rainfall, with around 1058 mm (42 in) annually. September is the wettest month.
Harbour Island Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Harbour Island - and find the best time to visit.
Monthly Temperature in Harbour Island
With minimal seasonal shifts, Harbour Island experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a comfortable 30°C (86°F) in August to a comfortable 24°C (75°F) in the coolest month, January.
Nights vary from 27°C (81°F) in August to around 21°C (70°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Harbour Island
Harbour Island has a notably wet climate with abundant precipitation, recording 1058 mm (42 in) of rainfall per year. The climate in Harbour Island shows significant variation throughout the year. Expect heavy rainfall in September, the wettest month, with an average of 161 mm (6.3 in) of precipitation over 22 rainy days.
In contrast, the driest month March offers drier and sunnier days, with around 46 mm (1.8 in) of rainfall over 10 rainy days. For more details, please visit our Harbour Island Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Harbour Island
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February, March, April, May, November and December
- Warmest weather: June, July, August, September and October
- Fewest rainy days: March and April
- Wettest months: June, July, August, September and October, when rainfall is highest.
Frequently asked questions about the climate in Harbour Island
What is the best time to visit Harbour Island?
January, February, March, April, May, November and December typically offer the most optimal weather in Harbour Island. In contrast, August and September tend to have less optimal conditions.
What temperatures can I expect in Harbour Island?
Daytime highs range from 24°C (75°F) in January to 30°C (86°F) in August. Nighttime lows range from 21°C (70°F) to 27°C (81°F). Temperatures stay relatively stable year-round.
How much rain does Harbour Island get?
Annual rainfall is around 1058 mm (42 in). September is the wettest month with 161 mm (6.3 in), while March is the driest with 46 mm (1.8 in).
Harbour Island 3-Day Forecast
Harbour Island 3-Day Forecast
Harbour Island on the map
Harbour Island is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Alice Town
30°C (86°F) Harbour Island30°C (86°F) Cherokee Sound30°C (86°F) Governorʼs Harbour30°C (86°F) Marsh Harbour30°C (86°F) Freeport
30°C (86°F) George Town30°C (86°F) Nassau30°C (86°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Escape the Crowds: The Unspoiled Beauty of the Out Islands
Out Islands, where pristine beaches, turquoise lagoons, and quiet landscapes offer a tranquil Caribbean paradise away from mass tourism.
A yoga ashram in paradise
The Bahamas has a Sivananda Yoga Ashram on one of its islands. There's nothing like waking up to the sound of birds chirping before going to morning meditation at a tropical paradise.