Conditions referenceSeason, water and visibilityBest Mar–May · Moderate current · 26–30°C (coldest Jan, warmest Jun)
- Current
- Moderate
- Water temperature
- 26–30°C (coldest Jan, warmest Jun)
- Visibility
- 15–35m: Offshore walls can be clear, but no authoritative monthly visibility series exists.
- Experience
- Some sheltered reefs suit Open Water divers.
01 · Marine life
What you may see
Sightings are never guaranteed. The bars show typical likelihood by month.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Hawksbills are year-round reef residents.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Great barracuda are resident around Guanaja reefs.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Green turtles are resident around reefs and seagrass habitat.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Caribbean reef sharks may patrol walls and pinnacles, but no reliable monthly trend is published.
See all 8 species
02 · Dive sites
Dive sites worth knowing
A starting point, not a ranking. Conditions decide what works on the day.
Black Rock Canyon
A moored reef-canyon site with swim-through options.
8–30m · Moderate current
Cathedral
A formation of large openings and passages.
10–30m · Moderate current
Sandi's Reef
A resort-accessed moored reef with shallower profiles than Guanaja's walls and pinnacles.
6–25m · Mild current
See all 4 dive sites
03 · LogisticsGetting there and costsModerate. Fly to RTB. Typical trip $$–$$$.
Route overview
Moderate
Reachable but with some friction: 1 domestic flight, a 4h overland transfer, a 3.5h boat crossing.
Airport options
RTB
Juan Manuel Gálvez International Airport
Scheduled ferry or charter flight onward to Guanaja; same-day connections depend on arrival time and weather
Typical trip cost
$$–$$$
$2,000–4,000 to over $4,000
Per person, excluding international flights.
- Seven-night resort packages with meals and roughly 17 dives commonly fall in the $2,000–4,000+ USD range before international travel, tax, tourist tax, environmental contributions and inter-island transport.