Koh Samui Klimat and Average Väder
Klimat of Koh Samui: average temperatures, rainfall and seasons month by month.
Klimat in Koh Samui month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Månad | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januari | 26° | 22° | 58 mm | ★★★★☆ |
| februari | 27° | 23° | 66 mm | ★★★★☆ |
| mars | 28° | 24° | 34 mm | ★★★★★ |
| april | 30° | 24° | 47 mm | ★★★★☆ |
| maj | 29° | 24° | 140 mm | ★★★★☆ |
| juni | 30° | 24° | 83 mm | ★★★★☆ |
| juli | 30° | 24° | 105 mm | ★★★★☆ |
| augusti | 29° | 23° | 129 mm | ★★★★☆ |
| september | 28° | 23° | 105 mm | ★★★★☆ |
| oktober | 27° | 23° | 235 mm | ★★★☆☆ |
| november | 26° | 22° | 301 mm | ★★★☆☆ |
| december | 26° | 22° | 182 mm | ★★★☆☆ |
Klimat type: Temperate. Källa: Open-Meteo archive (ERA5).
Recent extremes in Koh Samui
Högest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Koh Samui compares med nearby places
Annual averages, and the difference against Koh Samui.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Khao Sok National Park | 176 km | 26°C | +1°C warmer | 2702 mm |
| Railay Beach | 211 km | 27°C | +2°C warmer | 2044 mm |
| Phuket International Airport | 243 km | 28°C | +3°C warmer | 2195 mm |
| maja Bay | 246 km | 28°C | +3°C warmer | 1965 mm |
| Phuket | 254 km | 28°C | +2°C warmer | 1981 mm |
Bästa tiden att besöka Koh Samui
Go in januari, februari, mars and april. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: oktober, november and december - expect the least comfortable mix of heat, cold or rain.
What this means for Koh Samui
Today is about average for oktober. The forecast high of 27°C is in line med the 27°C typical for this month.
A 86% chance means rain is expected over most of the area. Plan indoor alternatives.
Wet roads are likely; braking distances roughly double in heavy rain.
Within 15 degrees of the equator, day length barely changes all year; seasons are defined by rain, not temperature.
Northern Hemisphere, so peak summer falls in juni och augusti.
The gap between the warmest and coldest month averages 3°C - an unusually even climate through the year.
What och pack, what och skip
- sönglasses, a brimmed hat and SPF 30+
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid oktober, november and december - historically the least comfortable months here.
Sammanfattning
Koh Samui is an island in Thailand. Koh Samui is an island known for palm-fringed beaches in the Gulf.
Just nu är det 23°C (73°F) in Koh Samui med light drizzle. Det känns som 27°C. I dag varierar temperaturen mellan 23°C och 27°C. Risken för nederbörd är 86%. Sightseeing conditions score 7.5/10 - bra förhållanden.
Bästa tiden att besöka Koh Samui is januari, februari, mars and april. Klimatet är temperate. oktober, november and december tend och be the least comfortable months. april is the warmest month med average highs near 30°C, while januari is the coldest med lows near 22°C.
The closest major airport is Phuket International Airport (HKT), about 243 km away. Nearby highlights include Khao Sok National Park, Railay Beach, maja Bay and Langkawi.
Enkelt förklarat. Today is about average for oktober. The forecast high of 27°C is in line med the 27°C typical for this month. The best window och be outside is roughly 7 AM och 10 AM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Koh Samui today at 9.4/10. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Koh Samui
Väder map for Koh Samui
Animated model layers. Pick a layer och load it.
Animated layers by Vindy. For pin-level detail and nearby places, see the interactive map below.
Explore Koh Samui
Every topic we hold for this place, and the same topic for the places around it.
Klimat 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 Asien.
What is the weather like in Koh Samui just nu?
It is currently 23°C (73°F) med light drizzle. Luftfuktighet is 97% and wind is 11 km/h.
When is the best time och visit Koh Samui?
januari, februari, mars and april offer the most comfortable conditions in Koh Samui, which has a temperate climate. oktober, 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 8:59 AM.
What is the nearest airport och Koh Samui?
The closest airports are Phuket International Airport (HKT), 243 km away and Suvarnabhumi Airport (BKK), 471 km away.
What are the top things och do in Koh Samui?
Popular options include Khao Sok National Park, Railay Beach, maja Bay and Langkawi.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Prognos and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klimat averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| 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 oktober 1, 2026 at 8:59 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
