Andaman Weather in September: The Season Is About to Turn
By Andaman Emerald Travels
Somewhere in September, the Andaman sea quietly changes its mood. The swell drops. The cloud lifts for an afternoon. And operators start preparing for a season that begins within weeks!
I watch this month closely every year, because it tells us what October and November will look like. It is still a monsoon month, and I won’t pretend otherwise. But it is also the month of transition, and that makes it useful for two kinds of traveller: those who want a quiet, low-cost visit now, and those who want to lock in the best dry-season deals before demand returns. This guide explains Andaman Weather in September, how the month shifts from start to finish and how to use it well. Weather varies from year to year, so treat every figure as a typical range and check forecasts closely.
Andaman Weather in September at a Glance
Weather Factor
Typical September Conditions
What It Means for You
Daytime temperature
Around 27°C to 30°C
Warm, humid and often cloudy
Night temperature
Around 24°C to 26°C
Warm and damp
Rainfall
Heavy early in the month, easing toward the end
Carry rain gear daily
Humidity
Very high, often 85 to 90 percent
Gear dries slowly
Sea conditions
Rough early, gradually settling
Check ferry and activity status every day
Underwater visibility
Poor, with slow improvement
Diving and snorkelling are still limited
Sunrise and sunset
Roughly 5:10 to 5:20 AM, and around 5:25 to 5:35 PM
Days are shortening, so plan around earlier sunsets
These figures describe the usual pattern of Andaman Weather in September. The Bay of Bengal can still produce storms and depressions, so follow official updates.
A Month in Two Halves
September isn’t one block. I split it in two.
Factor
First Half (1 to 15 Sep)
Second Half (16 to 30 Sep)
Rain
Heavy and frequent
Still heavy, with more dry gaps
Sea
Rough
Starting to settle
Ferries
Often disrupted
Gradually more reliable
Water sports
Mostly unavailable
Limited, with some operators preparing
Crowds
Very low
Very low, with early arrivals at month end
Prices
Low
Low, starting to rise toward October
Best for
Quiet, flexible stays
Early planners and late-month leave windows
Signs the Season Is Turning
You can read the shift if you know what to look for.
Rain comes in shorter bursts, with clearer gaps in between
Wind softens, and the sea looks less choppy
Ferry timetables stabilise, with fewer last-minute cancellations
Operators begin confirming equipment checks and staff schedules
Hotels start advertising October rates and early-bird offers
None of these guarantees a perfect October. But together, they give you a useful signal.
Andaman in September: Travel Tips, Weather & more
Here is the advice I give anyone considering a September visit.
Aim for the Final Week
Conditions are usually better toward the end of the month. If your leave dates are flexible, this is the safer window.
Keep Your Base in Port Blair
It has the most dependable services and indoor attractions. Island hops are riskier early in the month.
Book Flexible Rates
Choose free-cancellation hotels and changeable ferry tickets. Compare policies before you pay.
Buy Travel Insurance
Check that your policy covers weather delays and cancellations. Read the exclusions.
Keep Buffer Days
Add at least two spare days around your flight. A cancelled sailing can leave you waiting.
Pack for Damp Weather
Bring a sturdy rain jacket, waterproof footwear, a dry bag, a waterproof phone pouch and mosquito repellent. Pack clothes in sealed bags.
Why September Is a Smart Month for Planning
Demand for the dry season begins to build now. Travellers who book in September often get better choice of hotels, ferries and activity slots, and sometimes better rates, than those who wait until November.
Before you commit, confirm the details below.
What to Confirm
Why It Matters
What to Ask
Cancellation terms
Weather can still change plans
Is the booking refundable or changeable?
Ferry sectors
Popular routes sell out first
Which ferries are included, and who books them?
Activity slots
Scuba and sea walks fill early
Are slots confirmed or only requested?
Peak-date surcharges
Rates rise sharply around Christmas and New Year
Are holiday supplements included in the quote?
What the package includes
Inclusions differ between operators
Which meals, transfers and entries are covered?
For month-by-month planning, read our guide to the Best Time to Visit Andaman. For budgeting, see our Andaman trip cost guide.
What September Does Well
Quiet: Very few visitors, so museums and historic sites feel unhurried
Scenery: Dense, green islands under dramatic skies
Value: Lower prices and early-bird deals for the coming season
Planning: Plenty of choice if you book now for October to March
What September Does Poorly
Beach days and swimming
Diving, snorkelling and sea walks
Reliable island hopping, especially early in the month
Long road trips and remote destinations
For better months, read our guide to Things to do in Andaman, and for island highlights, see Places to visit in Andaman.
If you want a ready plan, browse our Andaman Tour Packages, or choose a theme above.
How Andaman Emerald Travels Can Help
Whether you travel in September or plan for the season ahead, we give clear, honest advice. We build flexible plans for the monsoon tail and early-bird itineraries for the dry season. For wider planning, read our Andaman travel guide, and the weather posts for October, November, December, January, February, March, April, May, June, July and August
Final Thoughts
September is the hinge of the Andaman year. Understand Andaman Weather in September, keep any visit flexible and insured, aim for the final week, and use the month to secure your dry-season plans while choice is wide. Ready to plan? Message our team, and we will help you pick dates with confidence!
FAQ's
It is warm, humid and rainy, with daytime temperatures around 27°C to 30°C. Rain and sea conditions ease toward the end of the month.
Not for beaches and water activities. It can suit quiet, flexible and budget-friendly trips, especially late in the month.
Rain is frequent and often heavy, though dry gaps become more common toward the end.
Some run, but delays are common, particularly early in the month. Keep buffer days.
Usually not, because of sea conditions and visibility. Explore our Andaman Adventure Packages for better months.
Often yes, with lower rates and fewer crowds. Choose refundable options. See our Andaman Budget Packages.
Only for couples who want a quiet, flexible stay. For beaches and sunsets, book a dry-season trip. See our Andaman Honeymoon Packages.
Stay in Port Blair, follow local advice and keep plans flexible. See our Andaman Family Packages.
The dry season generally begins around October, with conditions improving through November. Check the latest weather and operator updates.
Yes. Explore our Andaman Group Packages, Andaman LTC Packages and Andaman Tour Packages, and confirm LTC eligibility with your department.
How to reach
C-43 WARD NO. 12, DIGNABAD, PORT BLAIR, South Andaman, Andaman and Nicobar Islands, 744101
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