Koh Samui Vær Værmelding
Koh Samui weather: 28°C, mest klart. Time for time forecast, 14-day outlook, UV, air quality and the best time til visit.
Koh Samui weather in mars
One of the best months til visit Koh Samui.
mars runs close til the annual average in Koh Samui.
Compare med april.
Vær map for Koh Samui
Animated model layers. Pick a layer til load it.
Animated layers by Vindy. For pin-level detail and nearby places, see the interactive map below.
Klima in Koh Samui month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Måned | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januar | 26° | 22° | 58 mm | ★★★★☆ |
| februar | 27° | 23° | 66 mm | ★★★★☆ |
| mars | 28° | 24° | 34 mm | ★★★★★ |
| april | 30° | 24° | 47 mm | ★★★★☆ |
| mai | 29° | 24° | 140 mm | ★★★★☆ |
| juni | 30° | 24° | 83 mm | ★★★★☆ |
| juli | 30° | 24° | 105 mm | ★★★★☆ |
| august | 29° | 23° | 129 mm | ★★★★☆ |
| september | 28° | 23° | 105 mm | ★★★★☆ |
| oktober | 27° | 23° | 235 mm | ★★★☆☆ |
| november | 26° | 22° | 301 mm | ★★★☆☆ |
| desember | 26° | 22° | 182 mm | ★★★☆☆ |
Klima type: Temperate. Kilde: Open-Meteo archive (ERA5).
Beste tid å besøke Koh Samui
Go in januar, februar, mars and april. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: oktober, november and desember - expect the least comfortable mix of heat, cold or rain.
What til pack, what til skip
- Lightweight, light-coloured clothing and a refillable water bottle
- sønglasses, a brimmed hat and SPF 30+
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- Høy-factor sunscreen and a long-sleeve sun layer for midday
- Avoid unshaded sightseeing between 10am and 4pm - the UV-indeks peaks at 9.
- If your dates are flexible, avoid oktober, november and desember - historically the least comfortable months here.
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 |
| maia Bay | 246 km | 28°C | +3°C warmer | 1965 mm |
| Phuket | 254 km | 28°C | +2°C warmer | 1981 mm |
Se prognosen for Koh Samui etter tidsintervall
Koh Samui weather - more answers
Explore Koh Samui
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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 akkurat nå?
It is currently 28°C (83°F) med mest klart. Luftfuktighet is 63% and wind is 7 km/h.
When is the best time til visit Koh Samui?
januar, februar, mars and april offer the most comfortable conditions in Koh Samui, which has a temperate climate. oktober, november and desember 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 5:08 PM.
What is the nearest airport til 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 til do in Koh Samui?
Popular options include Khao Sok National Park, Railay Beach, maia Bay and Langkawi.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Værmelding and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klima 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 5:08 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
