Surf Forecasts:
How big are the waves at Ko Samui today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 0.5ft (0.1m), 6s period with SE swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 0.5ft (0.1m), 5s period with SE swell.
- Evening surf: Evening surf (20 Sep, local time) - 0.5ft (0.1m), 5s period with SE swell.
The current surf forecast for Ko Samui at 8PM is: 0.1m 5s primary swell from a Southeast direction (forecast issued at 12:00pm September 20). An open ocean swell of 0.1m 4s is not directed at the surf break, a second open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 0.5ft (0.1m) | 6s |
| Afternoon (20 Sep) | 0.5ft (0.1m) | 5s |
| Evening (20 Sep) | 0.5ft (0.1m) | 5s |
Table - waves today at Ko Samui. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 35mm), heaviest during Sun morning. Warm (max 28°C on Mon afternoon, min 26°C on Sun morning). Winds decreasing (fresh winds from the W on Sun night, calm by Mon night). | |||||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | |||||||||||||||||||
10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SE 6 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | S 5 | SE 5 | SE 4 | SE 4 | SE 4 | SE 4 | NNW 4 | N 3 | N 3 | N 3 | N 4 | — | — | — | W 2 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | glassy | off | off | off | off | off | off |
High Tide | 5:14PM1.18m | 6:10PM1.16m | 7:08PM1.14m | ||||||||||||||||||
Low Tide | 5:23AM0.22m | 5:45AM0.21m | |||||||||||||||||||
 | | |  | |  | |  | |  | | | | | | | | | | | | |
 | 6:09 | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | 6:16 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | 6 | 4 | 3 | 2 | 1 | — | — | — | — | — | 1 | — | 1 | 1 | 2 | — | 3 | 2 | 3 | 4 | 1 |
Temp °C | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 26 | 27 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 30 | 29 | 27 | 29 | 25 | 26 | 26 | 28 | 30 | 29 | 29 | 30 | 31 | 30 | 30 | 31 | 31 | 29 | 30 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | SE 6 | NW 4 | NW 4 | NW 4 | SE 5 | SE 5 | S 5 | SE 5 | SE 4 | SE 4 | — | NNW 4 | NNW 4 | N 3 | N 3 | N 3 | N 4 | — | — | — | — |
| kJ | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | 2 | 1 | 1 | 1 | 1 | 1 | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | SE 5 | SE 5 | SE 5 | — | — | — | — | — | — | SE 4 | SE 4 | — | — | — | — | — | — | — | — | — |
| kJ | — | 1 | 1 | 1 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SW 2 | SW 2 | SW 2 | WSW 2 | W 2 | — | — | — | NNW 5 | — | — | — | — | — | — | — | — | — | W 2 |
| kJ | — | — | 2 | 1 | 1 | 1 | 1 | — | — | — | 2 | — | — | — | — | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 219 | 219 | 258 | 219 | 219 | 258 | 258 | 258 | 258 | 258 | 219 | 219 | 219 | 219 | 219 | 219 | 271 | 271 | 220 | 219 | 221 |
Best forecast wave conditions in Gulf of Thailand | |||||||||||||||||||||
Best forecast wave conditions in Thailand | |||||||||||||||||||||
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