Andaman Islands Weather and Climate
The Andaman and Nicobar Islands have a tropical environment that is warm, humid, and lush all year round due to its proximity to the equator. Regardless of the month, the average temperature is between 23°C and 31°C, so you won't ever be really cold or extremely hot. Rainfall, the state of the water, and the general appropriateness of outdoor activities all undergo substantial seasonal variations.
There are two distinct seasons that shape travel to Andaman: the dry season and the monsoon season. Understanding each one will help you pick the right time based on what you want to do and how you like to travel.
Dry Season (November to April) Peak Travel Window
This is hands-down the best season to visit Andaman. From November through April, the weather is at its most agreeable clear blue skies, low humidity, calm seas, and excellent underwater visibility. Temperatures hover comfortably between 23°C and 30°C, making it easy to spend full days outdoors without feeling drained by the heat.
The sea is at its calmest during these months, which means inter-island ferry services run reliably and water sports like scuba diving, snorkeling, and sea walking are operating at their best. If exploring Havelock Island (Swaraj Dweep), Neil Island (Shaheed Dweep), or the more remote outer islands is on your list, this is the season to do it.
Month-by-Month Breakdown
October
October marks the end of the monsoon. Pleasant weather, calmer seas, and fewer tourists make it a great month before the peak season begins.
November
November brings clear skies, calm waters, and pleasant temperatures. It is an excellent month for sightseeing, island hopping, beaches, and outdoor adventures.
December
December offers sunny days, cool evenings, and crystal-clear waters. It is perfect for scuba diving, snorkeling, beach holidays, and festive celebrations.
January
January is one of the best months to visit. Comfortable weather and vibrant festivals make every island experience even more enjoyable.
February
February continues with sunny weather and calm seas. It is ideal for honeymooners, water sports, relaxing beaches, and romantic island escapes.
March
March remains warm and pleasant with fewer crowds. Water activities continue, making it a great time for a peaceful island vacation.
April
April becomes warmer with rising humidity. Lower hotel prices and quieter beaches make it a good choice for budget-friendly travel.
May
May brings occasional showers and humid weather. Early visits are enjoyable, though changing weather signals the arrival of the monsoon season.
Monsoon Season (June to September) Off-Season
The monsoon arrives in Andaman typically by late May or early June and dominates through September. Rainfall is heavy and frequent, seas become rough, and a significant number of water activities and inter-island ferry routes are either suspended or run irregularly due to safety concerns.
That said, the islands during monsoon have a completely different character. The forests are intensely green, waterfalls appear across the hills, and the islands feel genuinely remote and untouched. Tourist numbers are minimal, hotel rates drop substantially, and those who do visit often speak of a very peaceful, unhurried experience.
However, if your goal is to swim, dive, island-hop, or spend time on the beach, the monsoon months are not the right choice. Some islands also restrict visitor access during this period for safety reasons. We generally advise waiting for October if flexibility allows.
Monsoon Month Snapshot
June
Monsoon conditions heavy rainfall, strong winds, rough seas making water activities unsafe and ferry travel frequently disrupted discouraging leisure trips.
July
The wettest month brings intense rainfall, very low tourist activity, and resorts operating limited services or remaining completely closed across islands.
August
Monsoon persists with occasional breaks though unreliable. The landscape becomes lush and green but outdoor activities remain restricted and travel conditions limited.
September
Monsoon late September reducing rainfall frequency and improving conditions though weather remains unpredictable and not fully suitable for holidays yet.
Best Time for Water Sports in Andaman
Water sports are a huge reason people travel to the Andaman Islands, and the season matters enormously for the experience you get. Scuba diving, snorkeling, sea walking, kayaking, and glass-bottom boat rides all depend on calm seas and good underwater visibility conditions that are only reliably present during the dry season.
| Water Sport | Best Months | Notes |
|---|---|---|
| Scuba Diving | November to April | Peak visibility and calmest dive conditions |
| Snorkeling | October to May | Clear water and active marine life throughout |
| Sea Walking | November to April | Calm, shallow conditions required for safe sessions |
| Kayaking | October to May | Best explored through mangrove creeks in calm weather |
| Glass Bottom Boat | October to May | Clear visibility needed for reef viewing |
| Jet Skiing | November to March | Optimal sea surface conditions during peak winter months |
Water Sports Tips
- Scuba diving in Andaman is suitable for beginners no prior certification is needed for introductory dives at sites like Elephant Beach and North Bay.
- November to January offers the clearest underwater visibility of the year, often exceeding 20–25 metres at popular dive sites.
- Water temperatures remain warm (around 26–29°C) throughout the season, so a wetsuit is not mandatory but can add comfort on longer dives.
- Book water sports activities in advance during December to March, as slots fill up quickly at the popular beaches on Havelock and Neil Island.
Festivals and Events in Andaman
The Andaman Islands have a rich and layered cultural identity shaped by indigenous communities, mainland Indian settlers, and a colonial past. Several festivals throughout the year offer visitors a genuine window into local traditions, history, and community life.
Island Tourism Festival
(January / February)
Organised by administration, festival showcases music, dance, handicrafts, cuisine at Port Blair’s Aberdeen Jetty, attracting
Subhash Mela
(January)
Honours Netaji Subhas Bose's declaration Port Blair. Includes cultural programs, exhibitions, parades Ross Island history.
Mahashivratri
(February / March)
Celebrated across temples night-long prayers, rituals, decorations. Devotees gather in Port Blair, offering peaceful experience.
Diwali
(October / November)
Diwali lights up Islands fireworks, sweets, celebrations. marks peak tourist season festive atmosphere, weather, and joy.
Planning your visit around one of these festivals adds a layer of cultural richness that goes well beyond beaches and diving. Let our team know your travel dates and we can help align your itinerary with any events happening during your stay.
Andaman Season Summary at a Glance
| Month | Weather | Sea Conditions | Ideal For |
|---|---|---|---|
| October | Transitional, light showers | Improving | Shoulder season, fewer crowds |
| November | Pleasant, dry | Calm | Families, first-time visitors |
| December | Cool, sunny | Very calm | Diving, beaches, all activities |
| January | Cool, dry | Very calm | Peak season, festivals, honeymooners |
| February | Warm, clear | Calm | Couples, water sports, cultural events |
| March | Warm, mostly clear | Calm | Diving, sightseeing, island hopping |
| April | Warm, pre-monsoon | Generally calm | Budget travel, fewer crowds |
| May | Hot, humid, sporadic rain | Variable | Early May only; late May not advised |
| June - September | Heavy monsoon rains | Rough | Not recommended for most travellers |
Frequently Asked Questions
The best time to visit the Andaman Islands is from October to May when the weather is pleasant, the sea is calm, and conditions are ideal for sightseeing, beach activities, and water sports like snorkeling and scuba diving.
You can visit during monsoon (June to September), but heavy rains and rough seas may disrupt ferry services and water activities. It is not considered the ideal tourist season.
November to April is the best period for water sports such as scuba diving, sea walking, and snorkeling due to clear waters and excellent underwater visibility.
Andaman is best for honeymoons between October and May when the weather is romantic, beaches are clear, and outdoor activities are fully operational.
The Andaman Islands celebrate several festivals including the Island Tourism Festival (January/February), Subhash Mela (January), Mahashivratri (February/March), and Diwali (October/November). Visiting during these times offers a rich cultural experience.
December is one of the best months to visit Andaman. The weather is cool and dry, the sea is calm, and visibility underwater is excellent making it ideal for scuba diving, snorkeling, and beach activities.
Ready to Plan Your Andaman Trip?
Whether you are planning a family holiday, a honeymoon, or a diving trip, choosing the right month makes your Andaman experience significantly better. Our team is based in Port Blair and has been planning Andaman holidays for over 25 years we know every season, every ferry route, and every island in detail.
Call or WhatsApp us on +91 99320 89893 and someone on the ground will answer.
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