Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 23.7 °C | 23.8 °C | 11 days | Pleasant — a good time to go |
| February | 24.4 °C | 23.5 °C | 10 days | Pleasant — a good time to go |
| March | 25.3 °C | 24.2 °C | 9 days | Ideal — one of the best times of year |
| April | 26.5 °C | 25 °C | 12 days | Ideal — one of the best times of year |
| May | 27.7 °C | 26.5 °C | 16 days | Possible, with trade-offs |
| June | 29.4 °C | 28.3 °C | 19 days | Unfavourable season |
| July | 31 °C | 29.6 °C | 17 days | Possible, with trade-offs |
| August | 31.1 °C | 30 °C | 18 days | Possible, with trade-offs |
| September | 30.2 °C | 29.6 °C | 19 days | Unfavourable season |
| October | 28.3 °C | 28.2 °C | 17 days | Possible, with trade-offs |
| November | 26.4 °C | 26.4 °C | 14 days | Possible, with trade-offs |
| December | 24.9 °C | 24.8 °C | 10 days | Ideal — one of the best times of year |
Nearby in August
Before you go
Three things to check once you have picked your dates.
Entry
No visa needed for stays of up to 30 days. Passport valid for at least 6 months. Passport valid 6 months after you leave; extensions up to 8 months; if arriving from the USA on an ESTA, days here count towards its 90 days.
For a British passport, per the UK Foreign Office on 28 May 2026. Rules change: check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 28 May 2026
Health
Vaccines · hepatitis A and hepatitis B if you are not already vaccinated. Routine vaccines up to date (measles in particular).
Yellow fever · No yellow fever locally, vaccine not recommended. Certificate required only if you arrive from a country with yellow fever risk.
Malaria · None.
Mosquitoes · dengue and Zika reported: protect yourself from bites.
Per the CDC (page reviewed 25 August 2026); see a travel clinic a few weeks before departure.
Beau Fixe is not a safety or health authority. These notes summarise dated public texts and link to their source: France Diplomatie (Licence Ouverte 2.0), Foreign, Commonwealth & Development Office (gov.uk, Open Government Licence v3.0), Centers for Disease Control and Prevention (Source: CDC). Only the competent authorities are authoritative.
FAQ
Can you swim in Marsh Harbour in August?
The sea averages 30°C in August — yes, pleasant swimming.
How hot is Marsh Harbour in August?
Expect 31.1°C in the afternoon and 26.7°C at night, averaged over the last 10 years.
Does it rain a lot in Marsh Harbour in August?
Around 18 days with rain (≥ 1 mm) in the month — 58% of days.