Thailand Koh Samui Weather in February — Climate Guide
February in Koh Samui is very-high
Koh Samui Weather in February — Quick Answer
As of 2026- Avg temp
- 30° / 24°
- Rainfall
- 60mm · 6 days
- Crowds
- Very busy
As of 2026, Koh Samui in February averages a high of 30°C and low of 24°C with 60mm of rain over about 6 days. Peak dry season — hot, sunny, and pleasant. Around 30°C/24°C with low rainfall and lower humidity than usual. Light clothing, swimwear, a hat, and SPF 50+ essential under the strong UV. Sea ~29°C.
February is very-high for Koh Samui.
February is one of Koh Samui's best months — peak dry season with hot, sunny days and the lowest rainfall of the year (around 60mm). It averages 30°C/24°C.
This is prime time: calm, clear seas make Ang Thong, Koh Phangan, and Koh Tao trips reliable and beautiful, with excellent snorkeling and diving visibility. Humidity dips a touch below the year's norm, so the heat feels more comfortable than the muggier months.
Travel score
Koh Samui February Weather Stats
Avg High
30°C
Avg Low
24°C
Rainy Days
6
60mm total
Sunshine
8h
Daily avg
Humidity
78%
comfortable
UV Index
11
Extreme
Wind
13 km/h
Gusts 24
Sea Temp
29°C
Avg water temp
Crowds
Very busy
At attractions
February Sunrise & Sunset
Air Quality
PM2.5
13 μg/m³
PM10
24 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
34°C
Nighttime
26°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 24 km/h
Activities Recommended for February
February Travel Pros & Cons
Pros
- Peak dry season — lowest rainfall of the year
- Calm, clear seas — best boat and dive conditions
- Slightly lower humidity — comfortable heat
- Reliable sunshine for beaches and island trips
Cons
- Peak-season prices and busy beaches
- Extreme UV (11) — midday sun is intense
- Book 2-3 months ahead
- Chinese New Year crowds (date varies)
February Events & Festivals
- Peak dry season — one of the best months
- Calm, clear seas — prime boat-trip conditions
- Chinese New Year (date varies) — busier with regional visitors
- Valentine's Day (Feb 14)
Koh Samui in February — Full Picture
February is one of Koh Samui's best months — peak dry season with hot, sunny days and the lowest rainfall of the year (around 60mm). It averages 30°C/24°C.
This is prime time: calm, clear seas make Ang Thong, Koh Phangan, and Koh Tao trips reliable and beautiful, with excellent snorkeling and diving visibility. Humidity dips a touch below the year's norm, so the heat feels more comfortable than the muggier months.
Because it's peak season, expect higher prices and busy beaches in Chaweng and Bophut — book 2-3 months ahead. Chinese New Year (date varies) brings a wave of regional visitors and a short price bump.
Remember the Gulf timing: February is fantastic on Samui and also great on the Andaman coast (Phuket/Krabi), so it's a strong all-Thailand month — but Samui's window is shorter, peaking now through April.
The sea is a warm ~29°C with the best clarity of the year. UV is extreme (11) — reapply SPF 50+ and limit midday sun.
What to Wear & What to Pack
Peak dry season — hot, sunny, and pleasant. Around 30°C/24°C with low rainfall and lower humidity than usual. Light clothing, swimwear, a hat, and SPF 50+ essential under the strong UV. Sea ~29°C.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
31.7°C
25°C
10/mo
Summer (Jun·Jul·Aug)
32°C
25°C
13.3/mo
Autumn (Sep·Oct·Nov)
30°C
24.3°C
18/mo
Winter (Dec·Jan·Feb)
Current29°C
24°C
12.3/mo
Koh Samui Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 29° | 24° | 14d·180mm | 6.5h | 82% | 10 | Very busy | Peak | |
| February (Best) | 30° | 24° | 6d·60mm | 8h | 78% | 11 | Very busy | Peak |
| March (Best) | 31° | 25° | 7d·75mm | 8.5h | 78% | 12 | Busy | Peak |
| 32° | 25° | 9d·100mm | 8.5h | 78% | 12 | Busy | Peak | |
| 32° | 25° | 14d·150mm | 7h | 80% | 11 | Moderate | Shoulder | |
| 32° | 25° | 13d·110mm | 7.5h | 78% | 11 | Busy | Shoulder | |
| 32° | 25° | 13d·110mm | 7.5h | 78% | 11 | Very busy | Peak | |
| 32° | 25° | 14d·110mm | 7h | 78% | 11 | Very busy | Peak | |
| 31° | 25° | 15d·150mm | 6h | 80% | 10 | Moderate | Shoulder | |
| 30° | 24° | 19d·290mm | 5h | 84% | 9 | Quiet | Low season | |
| 29° | 24° | 20d·340mm | 4.5h | 85% | 9 | Quiet | Low season | |
| 28° | 24° | 17d·230mm | 5h | 84% | 9 | Very busy | Peak |
View Other Months
Koh Samui February Hotel Picks
Frequently Asked Questions
Is February a good time to visit Koh Samui?
Koh Samui in February is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Koh Samui in February?
Koh Samui February averages a high of 30°C and a low of 24°C.
Does it rain much in Koh Samui in February?
Koh Samui February averages 60mm of rainfall over about 6 rainy days.
What should I wear in Koh Samui in February?
Peak dry season — hot, sunny, and pleasant. Around 30°C/24°C with low rainfall and lower humidity than usual. Light clothing, swimwear, a hat, and SPF 50+ essential under the strong UV. Sea ~29°C.
What time are sunrise and sunset in Koh Samui in February?
Koh Samui February sunrise is 06:25 and sunset is 18:25, with 12h 00min of daylight.
What's the air quality like in Koh Samui in February?
Koh Samui February air quality (AQI) averages 36, rated Good. PM2.5 averages 13μg/m³.
What activities are recommended in Koh Samui in February?
In February, Koh Samui is great for Ang Thong Marine Park (prime conditions), Koh Tao diving & snorkeling, Chaweng/Lamai beach days.
Is February peak season in Koh Samui?
Koh Samui February crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Koh Samui
View Other Months
Planning a February trip to Koh Samui?
You've checked the weather — next come the budget and the route.
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.