Showing: Mar · Unsplash / Unsplash
Thailand · Asia Pacific
Best time to visit Koh Lanta
March
Mar scores highest overall — reliable weather and strong local atmosphere. Set your priorities below to personalise this result.
What matters most to you?
All 12 months — click any to expand
Mar
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Still excellent — dry season holds, crowds ease, prices begin to soften.
33°C
High
24°C
Low
45mm
Rain
9h
Sun/day
What you gain
- ↑45mm rainfall remains very dry — weather still overwhelmingly reliable and sunny
- ↑High season crowds thinning as European winter holidays end, making beaches more enjoyable
- ↑Prices dropping meaningfully from February peak — good value without compromising weather
What you sacrifice
- ↓Temperatures hitting 33°C by midday — less comfortable for active days than Feb
- ↓Some early monsoon showers possible in the last week as the Andaman begins to stir
- ↓Sea still calm but visibility at diving sites marginally less crystal than February
Mar scores highest overall — reliable weather and strong local atmosphere. Set your priorities below to personalise this result.
Mar
Still excellent — dry season holds, crowds ease, prices begin to soften.
33°C
High
45mm
Rain
9h
Sun
- ↑45mm rainfall remains very dry — weather still overwhelmingly reliable and sunny
- ↑High season crowds thinning as European winter holidays end, making beaches more enjoyable
- ↑Prices dropping meaningfully from February peak — good value without compromising weather
- ↓Temperatures hitting 33°C by midday — less comfortable for active days than Feb
- ↓Some early monsoon showers possible in the last week as the Andaman begins to stir
- ↓Sea still calm but visibility at diving sites marginally less crystal than February
Top travel windows
★ BestMarch
Best overall
Highest combined score
33°C
High
45mm
Rain
9h
Sun
September
Best for value
Lowest prices & fees
30°C
High
260mm
Rain
4.5h
Sun
June
Fewest crowds
Quietest month
31°C
High
195mm
Rain
5.5h
Sun
Breakdown by priority
Best for weather
February
33°C high · 20mm rain · 9.5hrs sun/day
Best for budget
September
Cheapest possible prices on accommodation — almost nothing left open to charge for
Fewest crowds
June
Absolute lowest prices of the year for whatever accommodation remains open
Worst time to visit
September
260mm exceeds 250mm: the absolute worst weather cap — this is a mandatory avoid for any weather-sensitive trip
Where to stay in Koh Lanta
All neighbourhoods →
Klong Nin & Old Town
Bohemian mid-island beach with Klong Nin's hipster cafés, and Lanta Old Town's Chinese shophouse waterfront.
6/10
Central
6/10
Walk
4/10
Transit
Long Beach (Khlong Dao)
The main beach — 3km of sand, family-friendly resort strip, and the best sunsets on the island.
8/10
Central
6/10
Walk
4/10
Transit
Also exploring
Tokyo
Japan
A city of dramatic seasonal contrasts — cherry blossom crowds, oppressive summer humidity, and golden autumn foliage — where the wrong timing can make or break the trip.
Bali
Indonesia
A Hindu island of rice terraces, temple ceremonies, and surf breaks where the monsoon makes timing genuinely binary — the difference between dry and wet season is not subtle.
Maldives
Maldives
A destination defined almost entirely by its monsoon calendar — the difference between the NE dry season (November–April) and SW wet season (May–October) is not subtle and shapes every aspect of the experience.
Worth knowing
March scores highest overall. December is the most crowded month — avoid if you can. See crowd-free ranking →
Month by month breakdown
January#4▾
Gains
- ↑28mm rainfall: effectively bone dry — reliable blue skies and calm Andaman Sea conditions daily
- ↑Kantiang Bay at its most beautiful: flat calm water, incredible visibility for diving Hin Daeng
- ↑Long Beach sunset strip fully operational — every restaurant, bar and resort open and buzzing
Sacrifices
- ↓High-season pricing across all accommodation tiers — book well ahead
- ↓Busy beaches and crowded longtail queues for day trips to nearby islands
- ↓Diving at Hin Muang and Hin Daeng requires early booking as liveaboards fill fast
February#3▾
Gains
- ↑20mm rainfall and 9.5 hours of daily sunshine: the most reliably perfect weather of the year
- ↑Lowest humidity at 68% — warm but not oppressive even at 33°C
- ↑Hin Daeng and Hin Muang diving conditions at their absolute best — whale shark season peak
Sacrifices
- ↓Peak prices across the island — Kantiang Bay boutique resorts at annual high rates
- ↓Liveaboard diving demand exceeds supply: whale shark trips need months of advance booking
- ↓Busiest stretch of the year on Long Beach Khlong Dao
March#1▾
Gains
- ↑45mm rainfall remains very dry — weather still overwhelmingly reliable and sunny
- ↑High season crowds thinning as European winter holidays end, making beaches more enjoyable
- ↑Prices dropping meaningfully from February peak — good value without compromising weather
Sacrifices
- ↓Temperatures hitting 33°C by midday — less comfortable for active days than Feb
- ↓Some early monsoon showers possible in the last week as the Andaman begins to stir
- ↓Sea still calm but visibility at diving sites marginally less crystal than February
April#6▾
Gains
- ↑90mm is manageable — most days still predominantly sunny with afternoon shower bursts
- ↑Songkran Thai New Year (mid-April): water festival celebrated throughout Koh Lanta Old Town
- ↑Prices at comfortable shoulder levels — good value for still-decent weather
Sacrifices
- ↓Humidity rising noticeably to 74% — muggy afternoons even on dry days
- ↓Monsoon onset within weeks — sea conditions beginning to deteriorate by month's end
- ↓Diving at Hin Daeng reduced from February–March peak conditions
May#8▾
Gains
- ↑Prices drop dramatically as tourism collapses — some of the best-value accommodation in Thailand
- ↑The few open guesthouses are nearly empty — rare genuine solitude for those determined enough
- ↑Klong Nin walking street still operates on weekends even through low season
Sacrifices
- ↓185mm exceeds the 150mm hard threshold — beach days are reliably disrupted by heavy rain
- ↓Longtail boats to outlying islands largely suspended due to rough Andaman Sea conditions
- ↓Significant number of restaurants, resorts and dive operations now closed until November
June#7▾
Gains
- ↑Absolute lowest prices of the year for whatever accommodation remains open
- ↑The island in low season has an eerie, deserted beauty that some travellers specifically seek out
- ↑National park mangroves and jungle interior lush and green at peak monsoon intensity
Sacrifices
- ↓195mm: persistent heavy rainfall with very little reliable sunshine
- ↓The majority of Kantiang Bay and Klong Nin operations now fully closed until November
- ↓Andaman Sea too rough for any meaningful water activities — diving suspended entirely
July#9▾
Gains
- ↑Accommodation that does open charges almost nothing — the cheapest beds in Koh Lanta's calendar
- ↑The island is essentially yours: Long Beach with zero other tourists is a unique experience
- ↑Some travellers find the moody, empty monsoon atmosphere genuinely compelling
Sacrifices
- ↓220mm exceeds the very-heavy threshold — this is not a weather trade-off, this is an avoid
- ↓Virtually all tourism infrastructure closed: restaurants, dive shops, boat tours, resorts
- ↓Muddy roads, flooded areas, and rough seas make movement around the island difficult
August#10▾
Gains
- ↑Prices at absolute minimum — budget accommodation available for almost nothing
- ↑Mangroves and national park interior at maximum lush and vivid green
- ↑Essentially zero fellow tourists — a true off-grid island experience for the adventurous
Sacrifices
- ↓245mm is well over the hard cap — beach and water activities simply not viable
- ↓Most of the island remains closed; the few open places have minimal staff and reduced menus
- ↓Humidity peaks at 84% — oppressively muggy on the rare dry moments
September#12▾
Gains
- ↑Cheapest possible prices on accommodation — almost nothing left open to charge for
- ↑Waterfalls in the Mu Koh Lanta national park reach their peak flow
- ↑No other travellers whatsoever on the island
Sacrifices
- ↓260mm exceeds 250mm: the absolute worst weather cap — this is a mandatory avoid for any weather-sensitive trip
- ↓Road flooding common — access to the southern national park unreliable
- ↓Essentially every business on the island is closed: this is genuine ghost-town mode
October#11▾
Gains
- ↑Some businesses and resorts begin reopening in the second half of October
- ↑Prices still near-low-season levels despite the gradual reopening
- ↑An interesting time to see the island transition back to life before the crowds arrive
Sacrifices
- ↓235mm is still well above the hard cap — weather is not yet reliable
- ↓Most quality accommodation and restaurants remain closed until November
- ↓Seas still too rough for most diving and boat trips to offshore islands
November#5▾
Gains
- ↑The island's transformation: resorts, restaurants and dive shops reopen after months of closure
- ↑Prices still well below December–February peak — first genuinely good-value dry-season visit
- ↑Andaman Sea calming rapidly — diving at Hin Daeng and Hin Muang resumes in earnest
Sacrifices
- ↓95mm still produces afternoon showers a few times per week
- ↓Not everything is fully operational yet — some Kantiang Bay boutiques need until December to open
- ↓Seas still slightly rougher than peak dry season for snorkelling and island hopping
December#2▾
Gains
- ↑40mm rainfall and 8.5 hours of daily sunshine: the season everyone comes for is finally here
- ↑The whole island is open: every restaurant, dive shop, resort and activity operator back at full capacity
- ↑Christmas atmosphere in Koh Lanta Old Town is relaxed and genuinely local — not commercialised
Sacrifices
- ↓December prices climbing steeply toward the January–February peak
- ↓Christmas and New Year week sees maximum arrivals — Long Beach busy in the evenings
- ↓Book accommodation at least 2–3 months ahead for the festive period
How this is calculated
Climate data
Open Meteo ERA5
30-year normals (1991–2020). Temperature, rainfall, sunshine, humidity.
Price & crowd
Tourism research
Seasonal pricing from tourism authority data. Directional — compares months within a destination only.
Personalisation
Weighted scoring
Your priorities change the weights. Budget-first users get different results than weather-first users.
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March is the best time to visit Koh Lanta
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