The Bahamas has a tropical climate with warm temperatures year-round, typically ranging from 70°F in winter to 88°F in summer. The archipelago rarely sees temperatures below 66°F or above 90°F, making it one of the more consistent warm-weather destinations in the Caribbean and Atlantic region.
Temperature by Season
The hot season runs from early June through early October, with average daily highs above 86°F. August is the warmest month, averaging a high of 88°F and a low of 79°F. Nights stay warm during this stretch, rarely dropping below the upper 70s, which means air conditioning is less of a luxury and more of a necessity for comfortable sleep.
The cool season lasts from early December through late March, with daily highs staying below 81°F. January is the coolest month, with highs around 79°F and lows near 70°F. That “cool” label is relative. Even in the depths of winter, daytime temperatures feel pleasantly warm, and you can comfortably swim in the ocean. Spring and fall serve as brief transition periods, with temperatures in the low to mid-80s and conditions that split the difference between the two main seasons.
Wet Season and Dry Season
Rainfall in the Bahamas follows a clear seasonal pattern. The wet season runs from late May through October, peaking in August with an average of 9.28 inches of rain. These summer rains tend to arrive as short, intense afternoon showers or thunderstorms rather than all-day drizzle, so they rarely wipe out an entire day outdoors. The dry season stretches from November through April, with noticeably less precipitation and more consistently sunny skies.
Annual rainfall varies considerably depending on where you are in the island chain. The northern islands around Abaco receive roughly 60 inches per year, while the far southeastern island of Inagua gets less than half that amount. Summer rainfall outpaces winter rainfall by about a 2:1 ratio across the archipelago.
Humidity Levels
The Bahamas is humid year-round, with relative humidity rarely dropping below 75% even in the driest month of April. By September, humidity climbs to around 82%. The islands feel particularly muggy for about eight months of the year, from mid-April through late December. That persistent moisture makes summer temperatures feel hotter than the thermometer suggests, since high humidity slows your body’s ability to cool itself through sweat. A day that reads 88°F on a weather app can feel closer to the mid-90s on your skin.
Northern vs. Southern Islands
The Bahamas stretches roughly 500 miles from northwest to southeast, and that distance creates real climate differences between the northern and southern islands. The northern Bahamas, including Grand Bahama and the Abacos, experiences noticeably cooler winters. Cold fronts from the North American mainland occasionally push south far enough to drop temperatures into the mid-60s for a day or two, something the southern islands almost never see.
The southern islands, including Inagua and the Turks and Caicos border area, are drier overall. Inagua averages about 135 mm of rain in October compared to 175 mm in Freeport on Grand Bahama. This north-south rainfall gradient comes down to latitude and how much moisture the prevailing winds carry by the time they reach the lower islands. If you’re looking for the driest possible Bahamas experience, the southeastern islands are your best bet.
Hurricane Season
Hurricane season officially runs from June 1 through November 30, with August, September, and early October carrying the highest risk. The Bahamas sits in one of the more active hurricane corridors in the Atlantic, and major storms can cause severe damage. Hurricane Dorian in 2019 illustrated this vulnerability in devastating fashion.
Climate trends are intensifying the risk. Sea levels along Bahamian coasts have risen nearly 10 inches since 1993, which effectively lowers natural storm barriers and makes storm surge more dangerous even from moderate hurricanes. Climate models project more frequent high-category storms and more extreme rainfall events in the coming decades, compounding flood risk across the low-lying islands.
Best Time to Visit
The dry season from November through April is the most popular time to visit, and for good reason. Rain is less frequent, humidity is at its lowest (though still high by most standards), and temperatures hover in the comfortable upper 70s to low 80s. This window also falls outside the peak hurricane months, reducing the chance of a trip-disrupting storm.
Summer travel is cheaper and perfectly viable if you don’t mind the heat and humidity. Afternoon rain showers are common but usually brief. The main tradeoff is the hurricane risk from August through October, which can mean canceled flights and evacuation orders during an unlucky week. Shoulder months like May and November often offer a good compromise: lower hotel prices, manageable weather, and fewer crowds than the peak winter season.