Roatan Weather: What Is Published and What Is Not

The averages are not here, on purpose.

Almost every page about Roatan will give you a temperature. This one does not. No source in this cluster's register publishes an average temperature, a rainfall figure or a water temperature for the island, and the alternative to citing one is not to guess at one. A fabricated number looks identical to a researched one on the page, and there is no way for a reader to tell them apart.

What can be said is that Roatan sits in the western Caribbean and shares the region's broad pattern of a wetter second half of the year. Which month you pick matters less here than how many hours you have ashore, which is the argument of the best time to visit guide. If you need figures to plan around, take them from a meteorological service rather than from a travel page, and treat any site that offers a precise average without naming its source with the suspicion it deserves.

Weather is a transport risk here before it is a comfort one.

On an island reached by ship or by a short flight, weather mostly shows up as a schedule problem rather than a wardrobe one. A swell that would be unremarkable on a mainland coast can close a tender operation or move a departure time, and a port call that loses two hours loses most of its afternoon.

That is the practical reason to keep a port-call plan loose and close to the pier, and it is covered in the transportation guide alongside how long things actually take on the island.

One Honduran health warning does not belong to this island.

The FCDO's health advice for Honduras notes that altitude sickness is a risk in parts of Honduras. Those parts are inland and mountainous. Roatan is a low, narrow island in the sea, and altitude is not a factor on it at any point.

This is worth saying plainly because country-level advice is written for a whole country, and a great deal of Roatan content is assembled by copying Honduran advice wholesale. If a page warns you about altitude on a Caribbean island, it was not written about the island. The same page's advice that tap water is not generally safe to drink does apply, and the food guide covers what that means in practice.

For which health advice genuinely does apply here, including a mosquito-borne risk that the two main authorities describe differently, see the travel safety guide.

Sources

• UK Foreign, Commonwealth and Development Office: the Honduras health page: that the emergency medical number is 911 and a caller should ask for an ambulance; that travelers should confirm before traveling that the destination can provide the healthcare they may need and that their insurance covers local treatment or unexpected medical evacuation, which matters particularly for anyone with a health condition or who is pregnant; that vaccine recommendations should be checked at least 8 weeks before the trip and that the health risks it links to include Zika virus, malaria, dengue and yellow fever; that altitude sickness is a risk in parts of Honduras, which are inland and mountainous rather than on the Bay Islands; that tap water is not generally safe to drink while bottled water is cheap and widely available; and that the legal status and regulation of some medicines differs between countries. Accessed 21 September 2026.
• UK Foreign, Commonwealth and Development Office: the Honduras travel advice landing page: that no travel can be guaranteed safe, and that anyone who chooses to travel should research their destination and get appropriate travel insurance. Accessed 21 September 2026.
• UK Foreign, Commonwealth and Development Office: the Honduras regional risks page: that the Bay Islands are generally safer than mainland Honduras, but that there have been several attacks by criminals on visitors, including on the ferries to and from mainland Honduras; that anyone visiting Roatan should travel with a reputable guide; and that a driver of a car or scooter should avoid side roads in remote areas, which can be poorly maintained and unsafe during night time hours. Accessed 21 September 2026.