Your August weather guide
HotWeather in Bahamas in August
August in the Bahamas suits travellers who want hot weather and warm sea swimming, but not those who need reliably dry days. Daytime highs average around 30°C, nights stay near 27°C, and rain falls on about 18 days. For a UK traveller, the main adjustment is the combination of heat, humidity and little overnight cooling. Go if you are happy to keep outdoor plans flexible; choose another month if wet weather would spoil the trip.
Long-term climate averages for Nassau, not a forecast · 1991-2020
Bahamas, month by month
Your snapshot
At a glance
The useful details for Nassau.
- Average daytime high
- 29.6°C
- 9 in 10 days stay below 31°C
- Average night-time low
- 26.8°C
- coldest 10% of nights: 26°C or lower
- Compared with London
- +8.2°C
- London averages 21.4°C in August
- Sea temperature
- 29.7°C
- year to year: 29°C to 30°C
- Sunshine per day (est.)
- 5.9h
- 46% of 12.9 h of daylight
- Rainy days (1 mm+)
- 18
- 117 mm over the month
- Humidity
- 77%
- Days over 25°C
- 100%
- 39% over 30°C
- Record high 1991-2020
- 32.7°C
- 2017-08-03
- Record low 1991-2020
- 23.4°C
- 1996-08-23
- Flight from London
- ≈ 9 h 30 min
- 6990 km, long-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How August compares
August is the 1st warmest month of the year in Bahamas and ranks 49th of 134 destinations we compare for August - see where else is hot in August. Against London's average high of 21.4°C in August, Bahamas is 8.2°C warmer by day and 13.3°C warmer at night.
Daytime and night-time in August
The typical August day in Bahamas peaks at 29.6°C, but that is an average: the warmest 10% of days reach 30.8°C or more. About 100% of days top 25°C and 1 in 3 pass 30°C. Nights average 26.8°C; one night in ten drops to 25.6°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 32.7°C (2017-08-03) and the coldest night 23.4°C (1996-08-23).
Rain in August
Wet (more than 8 rainy days): about 18 days with 1 mm or more, 117 mm in total. Year to year it varies a lot - the wettest August was 2011 with 251 mm, the driest 2001 with 46 mm. Humidity averages 77%, which makes the heat feel heavier than the thermometer suggests.
Sea temperature in August
The sea averages 29.7°C - warm enough to swim (22°c+). Depending on the year it ranges from 29.2°C to 30.1°C. This is the warmest the sea gets here all year.
Sunshine and daylight
Around 5.9 hours of sunshine a day (estimated from cloud cover), 12.9 hours of daylight: the sun rises about 06:43 and sets about 19:44 local time in mid-August. Average cloud cover is 54%.
Is August a good time to visit Bahamas?
It is a reasonable choice: hot days but expect showers. The best months for Bahamas on our scoring are April, March, December; months averaging 25°C or more: Apr, May, Jun, Jul, Aug, Sep, Oct, Nov.
Heat that stays with you into the evening
August is the Bahamas' warmest month, and the heat is not limited to the middle of the day. With humidity at 77%, light, loose clothing is a more useful packing priority than layers for cool evenings. Plan anything energetic for earlier in the day and leave room for shade and a slower pace around midday. Nights remain warm, so accommodation with air conditioning is a sensible choice if heat affects your sleep. This is a good fit for travellers who enjoy sustained warmth, but less comfortable for anyone hoping for a fresh evening after a hot afternoon. Pack breathable clothes that remain comfortable in humid conditions.
Warm swimming, with rain to work around
The sea averages 29.7°C, making August well suited to travellers who dislike a chilly swim. The catch is the rain: treat outdoor time as something to arrange around the weather rather than lock into a rigid schedule. Sunshine averages about 5.9 hours within 12.9 hours of daylight, so long days do not mean uninterrupted sun. Keep sun protection handy, but pack a light waterproof too and have an indoor alternative for wet spells. The rainy-day figure does not tell you how long each spell lasts, so neither a washout nor a quick shower is something to assume. August rewards flexibility more than a packed outdoor itinerary.
A little perspective
Bahamas through the year
August is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 23.6°C | 21.1°C | 24.2°C | 5.3 | 41 | 7 | 24% |
| February | 23.9°C | 21.1°C | 23.9°C | 6.5 | 32 | 6 | 31% |
| Marchbest | 24.4°C | 21.3°C | 24.1°C | 6.8 | 36 | 6 | 40% |
| Aprilbest | 25.6°C | 22.6°C | 25.0°C | 7.3 | 50 | 7 | 70% |
| May | 26.9°C | 24.1°C | 26.3°C | 6.9 | 78 | 10 | 95% |
| June | 28.5°C | 25.9°C | 28.1°C | 5.0 | 97 | 15 | 100% |
| July | 29.5°C | 26.7°C | 29.2°C | 6.3 | 73 | 15 | 100% |
| AugustSelected | 29.6°C | 26.8°C | 29.7°C | 5.9 | 117 | 18 | 100% |
| September | 28.9°C | 26.3°C | 29.3°C | 4.6 | 133 | 20 | 100% |
| October | 27.6°C | 25.2°C | 28.3°C | 5.0 | 133 | 17 | 98% |
| November | 25.8°C | 23.5°C | 26.5°C | 5.6 | 71 | 9 | 71% |
| Decemberbest | 24.5°C | 22.2°C | 25.2°C | 5.5 | 40 | 7 | 45% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in August
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
Mexico · 30°C by day · sea 29°C
Cancun
Mexico · 30°C by day · sea 29°C
Playa del Carmen
Mexico · 30°C by day · sea 29°C
Tulum
United States · 30°C by day · sea 30°C
Miami
St Lucia · 29°C by day · sea 29°C
St Lucia
A little more detail
Bahamas in August FAQs
Plain answers, grounded in the averages.
Is Bahamas hot in August?
Bahamas is hot in August: the average daytime high is 29.6°C and nights average 26.8°C. About 100% of August days reach 25°C or more.
Can you swim in the sea in Bahamas in August?
The sea around Bahamas averages 29.7°C in August, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 29°C to 30°C depending on the year.
How much does it rain in Bahamas in August?
Bahamas sees about 18 rainy days (1 mm or more) and 117 mm of rain in a typical August. The wettest August between 1991 and 2020 was 2011 (251 mm) and the driest was 2001 (46 mm).
How sunny is Bahamas in August?
Bahamas gets around 5.9 hours of sunshine a day in August out of 12.9 hours of daylight (estimated from average cloud cover).
How does Bahamas compare with the UK in August?
Bahamas is on average 8.2°C warmer than London by day in August (29.6°C against 21.4°C).
What is the hottest August on record in Bahamas?
Between 1991 and 2020 the hottest August day in Bahamas reached 32.7°C on 2017-08-03, and the coldest night dropped to 23.4°C on 1996-08-23.
How much hotter is it than London in August?
The average daytime high is 29.6°C in the Bahamas, compared with 21.4°C in London - a difference of 8.2°C. Humidity and warm nights also matter, so expect a more sustained heat than the daytime comparison alone suggests.
Which months should I consider instead?
April, March and December are the stronger choices overall for weather. If August's mix of heat and frequent rain sounds tiring rather than appealing, those are the months to consider instead, especially if your travel dates are flexible.
How long is the flight from London?
The flight from London takes about 9 h 30 min, making this a long-haul trip. If reliable sunshine is your main reason for travelling that far, weigh August's wet weather carefully rather than choosing it for the heat alone.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Nassau. Sea temperature from the nearest 5 km sea cell, 2.6 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C