Guantánamo Bay weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Good
Best time to visit: November – July
What is the weather like in Guantánamo Bay in August?
In August, Guantánamo Bay is hot: daytime highs average 33 °C, and even at night it stays warm at around 26 °C. The sea averages 29.7 °C – almost as warm as a bath. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 54 mm in total. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is a good month for a holiday in Guantánamo Bay.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 85 | 79 | 75 |
| Day | 33° | 33° | 32° |
| Night | 26° | 26° | 25° |
| Sea | 29° | 30° | 30° |
| Sun | 9 h | 8 h | 7 h |
| Rain days | 9 | 11 | 15 |
More details for August
- Daylight
- 12 h 50 min06:41 – 19:30
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 51 %on averageAll months
- Hot days
- 30 days30 °C or moreAll months
- Time zone
- UTC−4America/New_York
How the score comes together
- Temperatureweight 35 %76 %
- Seaweight 25 %100 %
- Sunshineweight 20 %87 %
- Few rainy daysweight 20 %53 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Guantánamo Bay in August: quick answers
Is Guantánamo Bay hot in August?
Yes. In August, Guantánamo Bay is hot: daytime highs average 33 °C and nights stay around 26 °C. On about 30 days the thermometer climbs to 30 °C or more.
Can you swim in Guantánamo Bay in August?
Yes. In August the sea averages 29.7 °C – almost as warm as a bath.
Does it rain much in Guantánamo Bay in August?
Rain is frequent, with about 11 rainy days and 54 mm in total.
Guantánamo Bay month by month
The whole year in Guantánamo BayAll destinations: CubaCaribbean weather in AugustWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences