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Surf Forecasts:
Koh Lanta - Khlong Dao surfForecast / Andaman Sea / Thailand
12 Day Weather and Surf, issued 6 pm Thursday 18 Sep 2025 +07
Best Forecast Surf Conditions for Koh Lanta - Khlong Dao this week:
The surf forecast for Koh Lanta - Khlong Dao over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 22) at 4PM. The primary swell is predicted to be 0.5m and 7s period with a secondary swell of 0.1m and 16s. Another secondary swell of 0.2m and 8s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Koh Lanta - Khlong Dao in the next 12 days are 0.5m 7s and forecast to arrive on Monday (Sep 22) at 1PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Sep 19) at 1PM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Mon 22nd Sep) | 1.5ft (0.5m) 7s |
| Best Surf | 4PM (Mon 22nd Sep) | 1.5ft (0.5m) 7s |
| Most Powerful | 1PM (Mon 22nd Sep) | 1.5ft (0.5m) 7s |
Table - best surf conditions forecast for Koh Lanta - Khlong Dao over the next 12 days.
Short Range Forecast Moderate rain (total 11mm), heaviest on Thu afternoon. Warm (max 29°C on Sat morning, min 27°C on Thu afternoon). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Tue night. Warm (max 28°C on Sun afternoon, min 27°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 4 | 7 | 4 | 4 | 7 | 17 | 4 | 8 | 17 | 7 | 8 | 7 | 7 | 8 | 20 | 21 | 8 | 18 | 8 | 16 | 4 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 0 | 7 | 0 | 0 | 7 | 6 | 0 | 9 | 12 | 12 | 15 | 25 | 26 | 6 | 8 | 17 | 2 | 13 | 3 | 0 | 0 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | off | cross- off | cross- off | off | off | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | off | off | off | off | off | ||
High Tide / height (m) | 10:45PM 2.05 | 10:45AM 2.40 | 11:16PM 2.27 | 11:18AM 2.55 | 11:43PM 2.46 | 11:47AM 2.65 | 12:08AM 2.60 | 12:14PM 2.69 | 12:33AM 2.69 | 12:40PM 2.68 | 12:57AM 2.74 | 1:05PM 2.61 | 1:21AM 2.72 | ||||||||||
Low Tide / height (m) | 4:36PM 0.59 | 4:35AM 0.72 | 5:08PM 0.40 | 5:10AM 0.53 | 5:35PM 0.25 | 5:41AM 0.37 | 6:00PM 0.14 | 6:10AM 0.26 | 6:24PM 0.09 | 6:37AM 0.20 | 6:47PM 0.09 | 7:04AM 0.20 | 7:10PM 0.14 | 7:30AM 0.24 | |||||||||
Thu 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||||
| Sunrise | - | - | 6:13 | - | - | 6:13 | - | - | 6:13 | - | - | 6:13 | - | - | 6:13 | - | - | 6:11 | - | - | 6:11 | ||
| Sunset | 6:22 | - | - | 6:22 | - | - | 6:21 | - | - | 6:20 | - | - | 6:20 | - | - | 6:19 | - | - | 6:19 | - | - | ||
 |  | | |  | |  |  |  | |  | | | | | | | | | | | |||
Rain (mm) | 2 | 3 | 1 | 1 | 3 | 1 | - | - | - | - | - | - | - | - | - | - | 2 | 1 | 1 | 1 | 1 | ||
| Temp. °C | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | ||
| Feels °C (?) | 28 | 28 | 28 | 28 | 29 | 30 | 30 | 30 | 29 | 30 | 31 | 30 | 30 | 31 | 30 | 30 | 31 | 30 | 29 | 30 | 31 | ||
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Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Andaman Sea
The wind is still cross-off at Koh Lanta - Khlong Dao (light winds from the WNW at KOLanta 11 km from Koh Lanta - Khlong Dao). 0.9m 4s local chop from the W with a 0.2m 6s windswell from the WSW. 2 swells combining to make bigger set waves.
1 h 30 min ago
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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 12 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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