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Surf Forecasts:

Khao Lak / Nang Thong surf break

Khao Lak / Nang Thong surfForecast / Andaman Sea / Thailand

information circle16 Day Weather and Surf, issued 6 pm Tuesday 17 Mar 2026 +07
Forecast update in hr  min  s Forecast update imminent
Khao Lak / Nang Thong surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Khao Lak / Nang Thong sea temperature is
29.7° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Khao Lak / Nang Thong this week:

The surf forecast for Khao Lak / Nang Thong over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Mar 18) at 1AM. The primary swell is predicted to be 0.4m and 14s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Khao Lak / Nang Thong in the next 16 days are 0.4m 14s and forecast to arrive on Wednesday (Mar 18) at 1AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 4s period and expected on Wednesday (Mar 18) at 1PM.

Wave TypeTime (+07) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Wed 18th Mar)1.5ft (0.4m) 14s
Best Surf 1AM (Wed 18th Mar)1.5ft (0.4m) 14s
Most Powerful 1AM (Wed 18th Mar)1.5ft (0.4m) 14s

Table - best surf conditions forecast for Khao Lak / Nang Thong over the next 16 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 12mm), heaviest on Tue afternoon. Warm (max 30°C on Wed morning, min 24°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Fri night. Warm (max 30°C on Sun morning, min 25°C on Fri night). Wind will be generally light.

Tue
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
1
0
1
0
0
0
0
0
0
0
0
1
1
0
1
0
0
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.3
SW
0.4
SW
0.3
SW
0.3
SW
0.2
WSW
0.2
WSW
0.3
SW
0.3
SW
0.3
SW
0.3
SW
0.3
SW
0.3
SW
0.3
SW
0.3
SW
0.3
SW
0.3
SW
Period(s) (?)141413131313131312141212131316161614141413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)686446454427432623201424252738393833333328
Wind
(km/h)
5
NW
5
E
5
E
15
WNW
5
ESE
0
NNW
15
W
5
ENE
0
WNW
15
WNW
10
NE
0
NNW
10
WNW
5
ENE
0
NE
15
WNW
10
NE
5
WSW
15
WNW
10
NE
5
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		offglasscross-
on		offglassoncross-
off		glassoncross-
off		glassoncross-
off		glassoncross-
off		glassoncross-
off		glass
High Tide
/ height (m)
9:40PM
2.46
10:04AM
2.44
10:11PM
2.60
10:34AM
2.61
10:43PM
2.66
11:05AM
2.72
11:16PM
2.65
11:37AM
2.74
11:49PM
2.55
12:10PM
2.67
12:25AM
2.37
12:46PM
2.52
1:03AM
2.13
Low Tide
/ height (m)
4:00AM
0.09
4:11PM
0.15
4:29AM
-0.06
4:44PM
0.03
4:59AM
-0.13
5:18PM
-0.03
5:30AM
-0.13
5:53PM
-0.02
6:02AM
-0.04
6:29PM
0.08
6:35AM
0.12
7:08PM
0.25
7:11AM
0.33
Tue
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Sunrise--6:31--6:31--6:31--6:31--6:30--6:30--6:28
Sunset6:37--6:37--6:37--6:37--6:37--6:37--6:37--
thunderstorm
clear
clear
clear
thunderstorm
clear
clear
thunderstorm
rain showers
clear
thunderstorm
clear
clear
thunderstorm
clear
clear
thunderstorm
clear
rain showers
thunderstorm
clear
Rain (mm)
4---2--51-2--1--1-11-
Temp. °C282730292729292728282729292730292729292729
Feels °C (?)323131313030313132303130323131313030313033
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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View detailed surf forecast for Khao Lak / Nang Thong at:
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Information about the Khao Lak / Nang Thong Surf forecast

The above surf forecast table for Khao Lak / Nang Thong provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Khao Lak / Nang Thong can be found by selecting the local surf guide option on the grey menu. Our Khao Lak / Nang Thong 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 (Khao Lak / Nang Thong) 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 Khao Lak / Nang Thong 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.

Khao Lak / Nang Thong is 81 km (50 miles) from Kathu. If you plan a holiday in Andaman Sea, look for hotels and other accommodation in Kathu. Kathu has rooms for a wide range of budgets as well as car hire and transport links.

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