Surf Forecasts:
Koh Lanta - Khlong Dao surf forecast from 14 Jul 2026:
- Best quality surf: Tuesday 21 Jul, 7AM (local time) - 2ft (0.6m), 7s period, WSW swell with offshore winds.
- Most powerful swell: Tuesday 21 Jul, 7AM (local time) - 2ft (0.6m), 7s period, WSW swell with 35 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 7AM (local time) - 2ft (0.6m), 7s period with WSW swell.
Best Forecast Surf Conditions for Koh Lanta - Khlong Dao this week:
The surf forecast for Koh Lanta - Khlong Dao over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 21) at 7AM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.4m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Koh Lanta - Khlong Dao in the next 16 days are 0.6m 7s and forecast to arrive on Tuesday (Jul 21) at 7AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Monday (Jul 20) at 1PM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 21st Jul) | 2ft (0.6m) 7s |
| Best Surf | 7AM (Tue 21st Jul) | 2ft (0.6m) 7s |
| Most Powerful | 7AM (Tue 21st Jul) | 2ft (0.6m) 7s |
Table - best surf conditions forecast for Koh Lanta - Khlong Dao over the next 16 days.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue afternoon. Warm (max 29°C on Wed morning, min 27°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 16mm), heaviest on Sat night. Warm (max 29°C on Fri afternoon, min 27°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tue 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 8 | W 17 | SW 16 | SW 16 | SW 8 | SW 16 | SW 15 | SW 15 | W 15 | W 14 | WSW 7 | WSW 4 | SW 7 | WSW 7 | WSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 14 | 15 | 9 | 9 | 9 | 6 | 6 | 6 | 10 | 10 | 2 | 10 | 9 | 8 | 4 | 4 | 4 | 0 | 7 | 20 | 26 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | glassy | glassy | glassy | glassy | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 00:33AM2.38m | 12:45PM2.93m | 1:17AM2.44m | 1:26PM2.92m | 1:58AM2.44m | 2:04PM2.84m | 2:37AM2.41m | 2:40PM2.68m | 3:13AM2.34m | 3:14PM2.48m | 3:50AM2.25m | 3:48PM2.26m | 4:28AM2.15m | ||||||||
Low Tide | 6:29PM0.11m | 6:26AM0.28m | 7:12PM0.04m | 7:10AM0.27m | 7:52PM0.03m | 7:51AM0.32m | 8:29PM0.09m | 8:29AM0.41m | 9:04PM0.21m | 9:07AM0.55m | 9:36PM0.36m | 9:46AM0.70m | 10:08PM0.53m | 10:28AM0.86m | |||||||
 |  | |  |  | | | | | | | | | | | | | |  | | | |
 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 |
 | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | 6:45 |
mm | 1 | 1 | 2 | — | — | 2 | — | — | — | — | — | 1 | 2 | 4 | 3 | 2 | 2 | 2 | — | — | 3 |
Temp °C | 28 | 28 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 29 | 28 | 28 |
Feels °C | 32 | 33 | 33 | 32 | 32 | 33 | 32 | 33 | 32 | 32 | 31 | 31 | 30 | 31 | 29 | 29 | 29 | 29 | 29 | 29 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 8 | WSW 8 | SW 8 | SW 8 | SW 8 | SW 7 | SW 7 | SW 7 | SW 7 | W 14 | WSW 7 | — | SW 7 | — | WSW 7 |
| kJ | 14 | 15 | 9 | 9 | 9 | 6 | 6 | 6 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 4 | — | 7 | — | 26 |
Swell 2 Height (m) Direction Period (s) | — | — | S 5 | — | — | S 5 | — | — | SW 16 | — | — | SW 16 | SW 15 | SW 15 | W 15 | — | — | — | — | — | — |
| kJ | — | — | 2 | — | — | 2 | — | — | 10 | — | — | 10 | 9 | 8 | 4 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 16 | W 17 | — | SW 16 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 5 | 6 | — | 10 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | WNW 3 | WNW 3 | W 3 | W 3 | WSW 3 | W 4 | W 4 | WSW 4 | WSW 4 | WSW 7 | SW 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 3 | 2 | 2 | 9 | 7 | 7 | 11 | 20 | 14 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 83 | 83 | 83 | 85 | 82 | 82 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 91 | 639 | 639 | 91 | 91 | 83 | 0 |
Best forecast wave conditions in Andaman Sea | |||||||||||||||||||||
Best forecast wave conditions in Thailand | |||||||||||||||||||||
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Information about the Koh Lanta - Khlong Dao Surf forecast
The above surf forecast table for Koh Lanta - Khlong Dao provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Koh Lanta - Khlong Dao can be found by selecting the local surf guide option on the grey menu. Our Koh Lanta - Khlong Dao surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Koh Lanta - Khlong Dao) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Koh Lanta - Khlong Dao may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Andaman Sea? If you are looking for accommodation near Koh Lanta - Khlong Dao, camping, hotels and holiday cottages in Andaman Sea, consider staying in Krabi which is 48 km (30 miles) away. Other places in and around Andaman Sea where you can find information about places to rent, and car hire include Trang which is 65 km (40 miles) away, Huai Yot, Ban Talat Yai and Phuket.
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