Koh Samui 天気 予報
Koh Samui weather: 24°C, 曇り. 時間別 forecast, 14-day outlook, UV, air quality and the best timeからvisit.
Koh Samui weather in 9月
A good monthからvisit Koh Samui.
9月 runs closeからthe annual average in Koh Samui.
天気 map for Koh Samui
Animated model layers. Pick a layerからload it.
Animated layers by 風y. For pin-level detail and nearby places, see the interactive map below.
気候 in Koh Samui month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| 月 | Avg high | Avg low | 雨fall | Rating |
|---|---|---|---|---|
| 1月 | 26° | 22° | 58 mm | ★★★★☆ |
| 2月 | 27° | 23° | 66 mm | ★★★★☆ |
| 3月 | 28° | 24° | 34 mm | ★★★★★ |
| 4月 | 30° | 24° | 47 mm | ★★★★☆ |
| 5月 | 29° | 24° | 140 mm | ★★★★☆ |
| 6月 | 30° | 24° | 83 mm | ★★★★☆ |
| 7月 | 30° | 24° | 103 mm | ★★★★☆ |
| 8月 | 29° | 23° | 129 mm | ★★★★☆ |
| 9月 | 28° | 23° | 144 mm | ★★★★☆ |
| 10月 | 28° | 23° | 178 mm | ★★★☆☆ |
| 11月 | 26° | 22° | 301 mm | ★★★☆☆ |
| 12月 | 26° | 22° | 182 mm | ★★★☆☆ |
気候 type: Temperate. 出典： Open-Meteo archive (ERA5).
訪問に最適な時期 Koh Samui
Go in 1月, 2月, 3月 and 4月. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: 10月, 11月 and 12月 - expect the least comfortable mix of heat, cold or rain.
Whatからpack, whatからskip
- 日glasses, 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 10月, 11月 and 12月 - historically the least comfortable months here.
How Koh Samui compares、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 | 2704 mm |
| Railay Beach | 211 km | 27°C | +2°C warmer | 2031 mm |
| Phuket International Airport | 243 km | 28°C | +3°C warmer | 2195 mm |
| 5月a Bay | 246 km | 28°C | +3°C warmer | 1965 mm |
| Phuket | 254 km | 28°C | +2°C warmer | 1981 mm |
時間帯別のKoh Samui 予報を見る
Koh Samui weather - more answers
Explore Koh Samui
Every topic we hold for this place, and the same topic for the places around it.
天気 for related places
Frequently asked questions
Where is Koh Samui?
Koh Samui is an island in タイ. Its coordinates are 9.512, 100.0136. It lies in アジア.
What is the weather like in Koh Samui現在?
It is currently 24°C (75°F)、曇り. 湿度 is 90% and wind is 12 km/h.
When is the best timeからvisit Koh Samui?
1月, 2月, 3月 and 4月 offer the most comfortable conditions in Koh Samui, which has a temperate climate. 10月, 11月 and 12月 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 4:45 PM.
What is the nearest airportから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からdo in Koh Samui?
Popular options include Khao Sok National Park, Railay Beach, 5月a Bay and Langkawi.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| 予報 and observations | Open-Meteo (ECMWF and national models). |
| 大気質 and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| 気候 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 10月 28, 2026 at 4:45 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
