Andaman in December: Peak Scuba Season & Perfect Beach Weather

Introduction: Why December Is Andaman's Best All-Round Month

December sits squarely in the Andaman Islands' best travel window, when the southwest monsoon is long gone, seas around Havelock and Neil Island are calm and clear, and daytime temperatures hover in a comfortable range without the peak-summer humidity of April and May. For scuba divers specifically, December offers some of the year's best underwater visibility, often exceeding 15 to 20 meters at popular sites, making it prime season for both certification courses and experienced dives. This guide covers the weather, diving conditions, and holiday-season crowd patterns travelers should know before booking a December Andaman trip. For a full circuit overview, see our 5-day Andaman Islands itinerary.

December Weather in the Andaman Islands, Week by Week

Humidity in December stays noticeably lower than the pre-monsoon months of April and May, making the islands' tropical heat far more bearable for beach days and boat excursions. Rainfall is minimal to nonexistent through the month, and the northeast monsoon's influence on the Andamans, unlike mainland India's east coast, is generally mild, meaning December reliably delivers sunny days with only occasional brief showers.

Scuba Diving Conditions in December

December is considered part of the Andaman's peak diving season, which broadly spans November through April. Underwater visibility at popular Havelock sites like Aquarium, Lighthouse, and Dixon's Pinnacle typically ranges from 15 to 25 meters, among the best conditions of the year, and sea temperatures stay warm and comfortable for diving without needing a thick wetsuit. Both beginner-friendly reef dives and more advanced sites are in good condition during this window, making December equally suitable for a first-time Discover Scuba experience or a full PADI Open Water certification course. Our Havelock scuba diving guide covers site-by-site detail, while the best islands and dive sites guide compares Havelock against Neil Island's quieter, shallower reef sites.

Beach Conditions Across the Islands

Radhanagar Beach on Havelock, frequently ranked among Asia's best beaches, is at its most photogenic in December, with calm turquoise water, minimal seaweed, and generally clear skies for sunset viewing. Neil Island's Bharatpur and Laxmanpur beaches similarly benefit from calm December seas, ideal for swimming and the glass-bottom boat rides that let non-divers see the coral reefs without getting in the water. Port Blair's nearby Corbyn's Cove is a convenient, lower-key option for travelers with limited time between the airport and onward island ferries. Across all three islands, December's dry, calm conditions make water sports beyond diving, including snorkeling, sea walking, and kayaking, reliably operational without the weather-related cancellations more common during shoulder-season months.

Holiday Season Crowds and Pricing

December, especially the final two weeks around Christmas and New Year, is unambiguously the Andaman Islands' busiest and most expensive period. Flights from mainland India, ferry tickets between Port Blair, Havelock, and Neil Island, and resort accommodation all see substantial price increases and reduced availability during this window, and popular resorts on Havelock can sell out months in advance for the December 20 to January 2 stretch specifically. Travelers wanting December's excellent weather without the holiday surge should target the first three weeks of the month, when conditions are nearly identical but pricing and crowd levels are considerably more manageable. Our guide to reaching Havelock from Port Blair is useful for planning ferry logistics, which get tightly booked during peak weeks.

December Compared to the Rest of Peak Season

The Andaman's peak season spans roughly November through April, with the monsoon returning by May. Within this window, December offers a strong balance: calmer seas and better visibility than the early-season transition month of November, without the building pre-summer heat and humidity that starts creeping in by March and April. January and February are climatically very similar to December, generally slightly cooler and equally good for diving, but without December's holiday crowd surge, making them arguably the best value months for travelers who can avoid the school holiday period. Late season, March and April, still offer good diving but with rising humidity and warmer overall conditions as the pre-monsoon heat builds.

For first-time visitors specifically wanting to combine excellent weather with the festive atmosphere of a Christmas or New Year beach holiday, December remains hard to beat despite the higher costs, since the islands' natural conditions are genuinely at their best during this exact stretch.

Practical Tips for a December Andaman Trip

• Book Flights and Ferries Months Ahead: Both mainland flights to Port Blair and inter-island ferries sell out early for the December 20 to January 2 period specifically.
• Reserve Dive Courses in Advance: Popular dive centers on Havelock have limited daily capacity for certification courses during peak season; book before arrival rather than walking in.
• Target Early-to-Mid December for Value: Weather is essentially identical to the holiday weeks but pricing and crowds are considerably lower before December 20.
• Carry Reef-Safe Sunscreen: Given the healthy coral reefs around Havelock and Neil Island, reef-safe sunscreen is both an environmental consideration and often requested by dive operators.
• Plan Ferry Buffer Time: Inter-island ferries can occasionally be affected by sea conditions even in calm December weather; avoid booking a same-day connecting flight immediately after an inter-island ferry.

Deep Sea Fishing and Other December Water Activities

Beyond diving and snorkeling, December's calm seas also make it a strong month for deep sea fishing charters out of Havelock and Port Blair, targeting species like barracuda, trevally, and reef fish in conditions considerably steadier than the choppier monsoon-adjacent months. Our deep sea fishing in Andaman guide covers charter options, typical trip durations, and what to expect on the water during this calm-sea window. Sea walking, an easier alternative to scuba for travelers who aren't certified divers, is similarly reliable in December, with operators at Havelock and North Bay near Port Blair running consistent daily sessions given the settled conditions.

Choosing Between Havelock and Neil Island in December

First-time visitors often ask whether to split their December trip between Havelock and Neil Island or focus on just one. Havelock, home to Radhanagar Beach and the greatest concentration of dive operators, suits travelers prioritizing diving variety and a livelier resort and restaurant scene. Neil Island, smaller and quieter, is better suited to travelers wanting a slower-paced few days of swimming, cycling between beaches, and simpler seafood shacks, with December's calm seas making its glass-bottom boat trips to the reef particularly worthwhile. Many itineraries, including our 7-day Andaman scuba and adventure island itinerary, split time across both islands, taking full advantage of December's reliable inter-island ferry conditions to do so without weather-related disruption.

Getting to the Andaman Islands for a December Trip

Port Blair is accessible by direct flights from major Indian cities including Delhi, Chennai, and Kolkata, typically taking around two and a half hours from Delhi with a layover or direct depending on the airline and season. From Port Blair, travelers continue to Havelock and Neil Island by government or private ferry, a journey of roughly 1.5 to 3 hours depending on the vessel. Given December's high demand, booking both the mainland flight and inter-island ferries well in advance is essential, particularly for travel during the peak holiday fortnight.

Conclusion

December delivers the Andaman Islands close to their absolute best: calm, clear seas ideal for both diving and beach days, dry and comfortable air temperatures, and reliably operational water sports across Havelock, Neil Island, and Port Blair, making it one of the strongest months on the calendar despite the holiday season's higher prices and busier ferries.