Koh Lanta, ThailandQuick decision
When to visit Koh Lanta?
🌞 Best time overall
February
🌡️ Optimal temperature
77°F–90°F in February
🌧 Least rain
23% rainy days in February
🌧 Wettest month
May (87%)
📅 Best score
7.8/10
By trip type
Best time by type of trip
Deserted BeachesNovember–April — Long Beach, Kantiang Bay and Ba Kan Tieng.
DivingNovember–April — Koh Haa, Hin Daeng and Hin Muang.
Mangroves & KayakingNovember–April — Mu Ko Lanta national park, sea kayaking.
FamilyDecember–March — safe beaches, relaxed pace and affordable prices.
Monthly climate data
Koh Lanta weather month by month
| Month | Min °F | Max °F | Rainy days (%) | Precip. in/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 77°F | 88°F | 36% | 0.1in | 11.0h | 7.7/10 |
| ☀️ February | 77°F | 90°F | 23% | 0.0in | 11.1h | 7.8/10 |
| 🌤️ March | 79°F | 90°F | 33% | 0.1in | 11.2h | 7.6/10 |
| ⛅ April | 79°F | 88°F | 69% | 0.2in | 11.2h | 7.1/10 |
| 🌦️ May | 79°F | 86°F | 87% | 0.3in | 10.1h | 7.0/10 |
| ⛅ June | 79°F | 86°F | 76% | 0.3in | 10.5h | 7.1/10 |
| ⛅ July | 79°F | 86°F | 73% | 0.3in | 10.4h | 7.1/10 |
| ⛅ August | 79°F | 84°F | 82% | 0.3in | 10.6h | 7.1/10 |
| ⛅ September | 79°F | 84°F | 84% | 0.4in | 10.2h | 7.0/10 |
| 🌦️ October | 77°F | 84°F | 87% | 0.4in | 9.4h | 7.0/10 |
| 🌦️ November | 77°F | 84°F | 86% | 0.3in | 9.1h | 7.0/10 |
| 🌤️ December | 77°F | 86°F | 51% | 0.2in | 11.0h | 7.4/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
🌴 Tropical destination — heavy rain months benefit from an algorithmic adjustment: tropical showers are intense but brief and usually don't ruin a trip.
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Good time
Average 31°F, 63% rainy days, 10.8h sunshine/day. Score: 7.2/10.
☀️ Summer (Jun–Aug) — Good time
Average 30°F, 77% rainy days, 10.5h sunshine/day. Score: 7.1/10.
🍂 Autumn (Sep–Nov) — Good time
Average 29°F, 86% rainy days, 9.6h sunshine/day. Score: 7.0/10.
❄️ Winter (Dec–Feb) — Good time
Average 31°F, 37% rainy days, 11.0h sunshine/day. Score: 7.6/10.
Accommodation
Find a place to stay in Koh Lanta
Check availability during the recommended period
Tip : off-peak months (May, June) are cheapest but weather is significantly worse.
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Activities and tours in Koh Lanta
Guided tours, skip-the-line tickets and local experiences.
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Flights
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
February is ideal with 23% rainy days and 32°F.
May is the wettest month with 87% rainy days.
Yes, February is the best month with an average of 32°F.
In winter, the average score is 7.6/10. Acceptable conditions for cultural visits.
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