Best time to visit Harbour Island
The best time to visit Harbour Island is from November to late-May during the winter dry season, when high temperatures average a balmy 26°C (78°F), with fairly constant and cooling easterly trade winds.
Harbour Island is considered a year round destination.
Harbour Island weather
Harbour Island experiences a hot tropical climate with a warm, winter dry season from November to mid-May, and a hot, wet summer season from mid-May to late-October.
What is the best month to visit Harbour Island?
February, March and April are the best months to visit Harbour Island, since this is the driest time of year, with warm, sunny weather, mainly clear skies and good conditions for swimming.
However, any month during the dry season, from late-November to mid-May, is good.
Which is the hottest month in Harbour Island?
The hottest month in Harbour Island is usually August, when daytime temperatures average a high of 33°C (91°F) and a low of 26°C (78°F).
The hot season lasts from mid-June through September, with an average daily high temperature above 31°C (87°F).
Which is the coldest month in Harbour Island?
The coldest month in Harbour Island is January, with an average high temperature of 26°C (79°F) and a low temperature of 19°C (66°F).
The cool season lasts from early-December to late-March, with an average daily high temperature below 26°C (78°F).
Which is the sunniest month in Harbour Island?
The sunniest month of the year in Harbour Island is usually April, with nine hours of bright sunshine per day; that's an average of 70% of daylight hours.
What is the humidity in Harbour Island?
Harbour Island experiences little seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 71% – 77% over the course of the year.
What do the humidity conditions feel like in Harbour Island?
We derive the humidity comfort level – what conditions feel like – from the dew point temperature, which measures moisture content in the atmosphere: a higher dew point feels more humid, while a lower dew point feels drier.
Meteorologists agree that dew point temperature is a more consistant indication of 'absolute humidity' than relative humidity, which fluctuates with temperature.
The average annual dew point in Harbour Island is 21°C (70°F), and varies over the course of the year from comfortable at 17°C (62°F) to muggy at 24°C (75°F).
The more humid time of year in Harbour Island lasts from mid-April to mid-December, when you can expect the comfort level to be muggy at least 55% of the time.
The months with the highest humidity in Harbour Island are June through October, when almost every day in each month is muggy or worse.
January through March is more comfortable. February has the least number of humid days, with an average of 13 days that are humid.
When is the sea warmest in Harbour Island?
The sea is usually at its warmest in Harbour Island in August when the water temperature reaches 30°C (86°F), which is pleasant for long swims.
The sea is warm enough for swimming year round in the Bahamas.
Which month has the most rain in Harbour Island?
June is usually the wettest month in Harbour Island with 92mm (4in) of rainfall on average. There are normally eight days in June with some rainfall.
Rain falls throughout the year in Harbour Island.
The wet, summer season lasts from mid-May to late-October, with a greater than 21% chance of any given day being a wet day, although rainfall is often limited to periodic showers and thunderstorms in the late afternoon or evening.
Which is the windiest month in Harbour Island?
The windiest month of the year in Harbour Island is November, with an average hourly wind speed of 23 kilometres per hour (12 knots;14mph).
The windy part of the year lasts from mid-October through to late-April, with average wind speeds of more than 20 kilometres per hour (11 knots;13mph).
The less-windy time of year lasts from late-April through to mid-October. The calmest month of the year in Harbour Island is August, with an average hourly wind speed of 16 kilometres per hour (9 knots;11mph).
The predominant average hourly wind direction in Harbour Island is from the east throughout the year.
Is there a risk of a tropical storm in Harbour Island?
The likelihood of a tropical storm in Harbour Island is greatest during the wet season with a risk of around 3% in August and September.
Although hurricanes are infrequent around Harbour Island, June through November marks the official Atlantic hurricane season.
Harbour Island Weather Averages |
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average high temperature (°C) | |||||||||||
| 26 | 26 | 28 | 29 | 30 | 31 | 33 | 33 | 31 | 31 | 29 | 27 |
| Average low temperature (°C) | |||||||||||
| 19 | 19 | 20 | 21 | 23 | 25 | 26 | 26 | 26 | 24 | 22 | 20 |
| Average daily sunshine (hrs) | |||||||||||
| 7 | 7 | 8 | 9 | 9 | 8 | 9 | 9 | 7 | 7 | 7 | 7 |
| Average daily daylight (hrs) | |||||||||||
| 10 | 11 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 11 | 11 | 10 |
| Comfort level – heat | |||||||||||
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| Comfort level – humidity (#muggy days) | |||||||||||
| 14 | 13 | 14 | 17 | 25 | 29 | 31 | 31 | 30 | 28 | 21 | 18 |
| Average dew point temperature (°C) | |||||||||||
| 17 | 18 | 18 | 19 | 21 | 24 | 24 | 24 | 24 | 23 | 20 | 19 |
| Average relative humidity (%) | |||||||||||
| 75 | 75 | 71 | 71 | 74 | 76 | 74 | 76 | 77 | 77 | 75 | 77 |
| UV Index (max) | |||||||||||
| 6 | 8 | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 8 | 6 | 5 |
| Average days of rainfall (≥1mm) | |||||||||||
| 4 | 4 | 4 | 4 | 6 | 9 | 7 | 8 | 9 | 8 | 4 | 3 |
| Average monthly rainfall (mm) | |||||||||||
| 25 | 29 | 32 | 37 | 71 | 91 | 67 | 79 | 87 | 79 | 42 | 23 |
| Average wind speed (km/h) | |||||||||||
| 22 | 22 | 22 | 20 | 18 | 17 | 17 | 16 | 17 | 20 | 23 | 22 |
| Average sea temperature (°C) | |||||||||||
| 25 | 24 | 24 | 25 | 26 | 28 | 29 | 29 | 29 | 28 | 27 | 26 |
| Dunmore Town, Harbour Island, Bahamas | |||||||||||
Holiday seasons
High season: From mid-December to mid-April hotel prices are at there highest and it's best to book well in advance. March and April coincides with the spring-break for US college kids.
Low season: Lasts approximately from mid-April to mid-December and offers huge discounts (up to 60 per cent) on hotel rooms.
Source: Meteorological data for Harbour Island is based on weather statistics gathered for the 30-year period 1992 to 2021 by the Bahamas Department Of Meteorology at the closest weather station: Lynden Pindling International Airport (NAS), formerly known as Nassau International Airport, located on New Providence Island around 98km (60mi) west of Harbour Island. This station is deemed sufficiently nearby to be relied upon as the primary source for historical climate records, although weather conditions in Harbour Island may vary slightly.
Additional climate data is sourced from the United States National Oceanic and Atmospheric Administration (NOAA).
Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.
Latest update: Best time to visit Harbour Island: 16 May, 2024
Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.
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