For most travelers, the easiest window is January through May. That is when Grenada is usually drier, the west coast is easier to plan, and split-island moves to Carriacou are less likely to be disrupted by weather. Water still stays warm around 27°C to 29°C year-round, so the difference is not temperature. It is visibility, rainfall, and logistics. June through December can still be rewarding, especially on sheltered southwest sites, but you should expect more runoff after rain and more risk of ferry or small-aircraft changes.

Stay on the main island if you want the easiest airport transfer, a bigger hotel base, famous wreck access, and the Underwater Sculpture Park. Grenada (St. George's and Grand Anse) is the right answer for most first-time visitors. Choose Carriacou (Tyrrel Bay) if you want quieter reef days, a slower village pace, and more of a Grenadines atmosphere. The best country-level plan is often both: start on Grenada for logistics and headline sites, then move to Carriacou for the calmer second half of the trip.

Yes, at some headline protected areas you should expect a fee. The clearest confirmed current example is the Moliniere Beausejour Marine Protected Area fee, sold through the Grenada Tourism Authority payment portal at EC$10, roughly US$3.50, per person per visit. In Carriacou, divers commonly encounter a separate protected-area surcharge around the Sandy Island Oyster Bed Marine Protected Area. In practice, operators often guide you through the process or collect it as part of the day. Recheck shortly before travel because Grenada has also announced phased fee changes for later dates.

It is straightforward. Maurice Bishop International Airport sits close to Grenada's southwest tourism zone, so Grand Anse is usually only about 15 to 20 minutes away by taxi or transfer, and St. George's is not much farther. This is one reason the main island is such an easy first stop. If you are continuing to Carriacou, either spend your first nights near Grand Anse and move later, or take a short SVG Air hop to Lauriston Airport. Avoid planning a same-day international arrival, ferry, and hotel check-in on Carriacou if weather looks uncertain.

Absolutely. Grenada's reputation can sound very wreck-heavy because of Bianca C and the island's famous ship dives, but the country is not only for deep profiles. The Underwater Sculpture Park is shallow, visually distinctive, and suitable for snorkelers, freedivers, and easy scuba days. Southwest Grenada also has sheltered reef options, while Carriacou leans even more toward relaxed coral and reef rhythm. A traveler who skips deep wrecks can still build a full week of warm-water dives, snorkeling, beaches, sailing, and inland excursions without feeling like they missed the country's core experience.

Some are manageable as part of a carefully chosen beginner progression, but Grenada's best-known wreck identity is not automatically beginner terrain. The country mixes accessible shallows with deeper wrecks that are better for Advanced divers who are comfortable in blue water, with stronger navigation demands and stricter ascent discipline. Newer divers will usually enjoy Grenada more by mixing easier west-coast reefs and marine-park dives first, then upgrading to more ambitious profiles only if conditions and comfort line up. Ask your operator to choose by your real experience level, not just your certification card.

Yes, if you want the country to feel like more than one resort zone. Carriacou changes the mood of the trip: quieter roads, protected reef days, beach-and-cay downtime, and a stronger Grenadines feel. It is especially worth adding if one traveler dives while another prefers snorkeling or simple boat days. The tradeoff is logistics. Inter-island flights and ferries are more weather-sensitive than staying on the main island, so build buffer time and avoid relying on a same-day connection before your international flight home. For seven or more nights, the split often pays off.

Grenada is still warm and very usable in the wetter months, but conditions become less predictable from roughly July through October. The biggest planning changes are not cold water or total trip failure. They are passing squalls, softer shallow visibility after rain, rougher exposed beaches, and a higher chance of delayed ferries or small inter-island flights. Southwest Grenada remains the best fallback because west-coast sites are more sheltered. If you are traveling then, keep your most transfer-sensitive plans flexible and avoid basing your entire trip on open-coast or inter-island timing.

Grenada's water usually sits around 27°C to 29°C through the year, which is why many visitors are comfortable in a 3mm suit, a shorty, or even lighter exposure for snorkeling. The right choice depends less on the calendar and more on how many dives you plan to do, how quickly you get cold, and whether you are mixing boat days with rain or wind. Multi-dive wreck days can feel cooler than a single snorkel outing. Bring a hooded vest only if you know you chill easily after repeated dives.

Grenada is unusually strong for non-divers because the main water hubs also connect quickly to beaches, sailing, waterfalls, estates, and turtle-season experiences. A non-diver can spend a morning at Grand Anse, take a harbor or catamaran trip, visit St. George's, then head inland to Grand Etang or Seven Sisters. Carriacou adds a quieter version of the same idea with cays, beaches, and village time. The best approach is not to overfill the day. One water activity plus one land stop usually feels better than trying to chase every sight in one pass.

Many short-stay visitors from the United States, Canada, the United Kingdom, much of Europe, Japan, South Korea, and the Caribbean do not need a visa, but Grenada's official travel guidance should always be checked for your passport before booking. Regardless of visa status, arriving travelers are expected to complete Grenada's online Immigration and Customs form within 72 hours before arrival and keep the receipt ready. You also need a valid passport, and official tourism guidance says it should have at least six months of remaining validity, plus proof of return or onward travel.

Grenada has public hospital support, emergency services, and private medical backup through St. Augustine's Medical Services, which lists 24/7 emergency care and hyperbaric medicine. That is the main reason experienced divers still treat the country as workable for ambitious profiles. The catch is geography. If you are on Carriacou, a serious incident may require stabilization and onward coordination to the main island depending on the case. That is why dive insurance and DAN membership or equivalent emergency support are strongly recommended, especially on split-island itineraries.

Grenada's north coast, especially around Levera, is the place to think about leatherbacks. Guided programs typically focus on nesting from April through July, with hatchlings more likely from May through July, though exact timing varies by season and conditions. Treat turtle viewing as a conservation activity, not a casual beach stop. Book with guided programs, follow light restrictions, and keep expectations flexible because wildlife timing is never guaranteed. Travelers who care deeply about turtle nights often pair late-spring travel with southwest diving so they still have calm-water options during the day.