Koh Samui Travel Guide
Koh Samui travel guide: interactive map, live weather, best time to visit, things to do and nearby places.
Active alerts for Koh Samui
Derived from the forecast. No official alert feed is wired for this country yet.
Summary
Koh Samui is an island in Thailand. Koh Samui is an island known for palm-fringed beaches in the Gulf.
Right now it is 80°F (27°C) in Koh Samui with overcast. It feels like 86°F. Today runs from 75°F to 85°F. Chance of precipitation is 41%. Sightseeing conditions score 8.4/10 - good conditions.
The best time to visit Koh Samui is January, February, March and April. The climate is temperate. October, November and December tend to be the least comfortable months. April is the warmest month with average highs near 86°F, while January is the coldest with lows near 72°F.
The closest major airport is Phuket International Airport (HKT), about 151 mi away. Nearby highlights include Khao Sok National Park, Railay Beach, Maya Bay and Phuket.
In plain terms. Today is about average for August. The forecast high of 85°F is in line with the 84°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Koh Samui today at 9/10. Gusts to 31 mph will push high-sided vehicles on exposed roads and bridges.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Map of Koh Samui
Interactive map with nearby places. Switch between street, terrain and satellite views.
Coordinates: 9°30′43.2″N 100°0′49″E (9.512, 100.0136)
Weather in Koh Samui right now
Wear sunglasses and use SPF 30+ if you are outside for long.
Source: Open-Meteo. Updated 5:14 PM, Aug 23 local time.
Weekend outlook
🌦️ 85° / 75°
Light drizzle · 41% rain · wind 11 mph
🌦️ 80° / 72°
Light drizzle · 82% rain · wind 14 mph
Quick facts about Koh Samui
Things to do in Koh Samui
Attractions, parks and landmarks in and around Koh Samui.
Best time to visit Koh Samui
Go in January, February, March and April. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: October, November and December - expect the least comfortable mix of heat, cold or rain.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 31 mph.
- If your dates are flexible, avoid October, November and December - historically the least comfortable months here.
Airports near Koh Samui
Closest airports with IATA codes and distances.
| Airport | Code | Distance | Serves |
|---|---|---|---|
| Phuket International Airport | HKT | 151 mi | Phuket |
| Suvarnabhumi Airport | BKK | 293 mi | Bangkok |
Explore Koh Samui
Every topic we hold for this place, and the same topic for the places around it.
Travel Guide for related places
Frequently asked questions
Where is Koh Samui?
Koh Samui is an island in Thailand. Its coordinates are 9.512, 100.0136. It lies in Asia.
What is the weather like in Koh Samui right now?
It is currently 80°F (27°C) with overcast. Humidity is 76% and wind is 8 mph.
When is the best time to visit Koh Samui?
January, February, March and April offer the most comfortable conditions in Koh Samui, which has a temperate climate. October, November and December are usually the hardest months for outdoor plans.
What time zone is Koh Samui in?
Koh Samui observes Asia/Bangkok (UTC+07:00). The local time is 5:14 PM.
What is the nearest airport to Koh Samui?
The closest airports are Phuket International Airport (HKT), 151 mi away and Suvarnabhumi Airport (BKK), 293 mi away.
What are the top things to do in Koh Samui?
Popular options include Khao Sok National Park, Railay Beach, Maya Bay, Phuket and Langkawi.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Map tiles | OpenStreetMap contributors, CARTO and Esri. |
| Elevation | Open-Meteo digital elevation model where the dataset has no value. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 5:14 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
