Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 30.3 °C | 27.5 °C | 5 days | Ideal — one of the best times of year |
| February | 31.1 °C | 27.2 °C | 4 days | Ideal — one of the best times of year |
| March | 32 °C | 27.2 °C | 6 days | Ideal — one of the best times of year |
| April | 32.4 °C | 27.8 °C | 12 days | Ideal — one of the best times of year |
| May | 32 °C | 28.7 °C | 18 days | Possible, with trade-offs |
| June | 33.4 °C | 29.2 °C | 14 days | Possible, with trade-offs |
| July | 34.9 °C | 29.6 °C | 12 days | Ideal — one of the best times of year |
| August | 34.5 °C | 29.9 °C | 13 days | Ideal — one of the best times of year |
| September | 33.7 °C | 30 °C | 18 days | Unfavourable season |
| October | 31.7 °C | 29.7 °C | 18 days | Possible, with trade-offs |
| November | 30.8 °C | 29.1 °C | 10 days | Ideal — one of the best times of year |
| December | 30.6 °C | 28.1 °C | 5 days | Ideal — one of the best times of year |
Before you go
Three things to check once you have picked your dates.
Entry
Entry rules depend on your nationality and change often. Check them before booking.
Safety
Travel advised against
Authorities advise against travelling there.
Official advice updated 16 July 2026
Health
Recommended vaccinations, water quality, mosquitoes: advice depends on the country and the season. Some vaccines need time before departure.
Beau Fixe is not a safety or health authority. These notes summarise public advisories and link to their source; only the competent authorities are authoritative. Alert levels: Foreign, Commonwealth & Development Office (gov.uk), Open Government Licence v3.0.
FAQ
Can you swim in Guantánamo in May?
The sea averages 28.7°C in May — yes, pleasant swimming.
How hot is Guantánamo in May?
Expect 32°C in the afternoon and 23.2°C at night, averaged over the last 10 years.
Does it rain a lot in Guantánamo in May?
Around 18 days with rain (≥ 1 mm) in the month — 58% of days.