Nai Harn Beach surf break

Nai Harn Beach surfForecast / Phuket / Thailand

information circle12 Day Weather and Surf, issued 12 pm Friday 11 Jul 2025 +07
Forecast update in hr  min  s Forecast update imminent
Nai Harn Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nai Harn Beach sea temperature is
29.7° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Nai Harn Beach this week:

The surf forecast for Nai Harn Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 15) at 7AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.2m and 16s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Nai Harn Beach in the next 12 days are 2.1m 8s and forecast to arrive on Tuesday (Jul 15) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 5s period and expected on Tuesday (Jul 15) at 1AM.

Wave TypeTime (+07) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Tue 15th Jul)4.5ft (1.4m) 8s
Best Surf 7AM (Tue 15th Jul)4.5ft (1.4m) 8s
Most Powerful 4PM (Tue 15th Jul)7ft (2.1m) 8s

Table - best surf conditions forecast for Nai Harn Beach over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.6
W
1.9
W
1.6
W
1.6
WSW
1.7
WSW
1.6
W
1.6
W
1.3
W
1.1
W
1.1
W
1.1
W
1
W
1.6
WSW
2.1
WSW
2.1
WSW
1.8
WSW
1.6
W
0.8
W
1.1
W
1.1
W
0.9
W
0.8
W
0.7
W
0.6
W
0.7
W
1
W
1
W
1.4
W
1.5
W
2.4
W
2.4
W
2.4
W
2.5
W
2.5
W
2.5
W
3
W
Period(s) (?)77777777777978888988887877889999991010
Wave
Graph
(?)Metric surfscale
Energy (?)255338268247261277283194148153152175292507494474375202160149105885674851361673884769169639841104115313191389
Wind
(km/h)
35
W
35
W
30
W
30
W
30
W
30
W
30
W
15
WSW
15
WSW
5
WSW
10
SSW
15
WSW
5
NE
10
S
20
WSW
35
WSW
25
WSW
20
WSW
5
S
5
SSW
10
WNW
10
WNW
15
W
25
W
20
WSW
20
WSW
25
W
30
WSW
50
WSW
45
W
45
W
45
W
40
W
35
W
40
W
45
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
ononcross-
on
oncross-
on
glasscross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscrosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
10:51AM
1.90
11:19PM
1.55
11:27AM
1.95
11:56PM
1.60
12:02PM
1.97
12:33AM
1.64
12:38PM
1.95
1:12AM
1.65
1:15PM
1.88
1:54AM
1.65
1:56PM
1.77
2:40AM
1.63
2:41PM
1.63
3:33AM
1.60
3:37PM
1.47
4:37AM
1.56
4:50PM
1.33
5:55AM
1.56
6:25PM
1.26
7:16AM
1.61
7:57PM
1.29
8:26AM
1.71
9:07PM
1.38
Low Tide
/ height (m)
5:20PM
0.19
5:08AM
0.28
5:55PM
0.13
5:45AM
0.26
6:29PM
0.09
6:23AM
0.27
7:05PM
0.09
7:04AM
0.30
7:42PM
0.11
7:48AM
0.37
8:21PM
0.17
8:39AM
0.46
9:06PM
0.27
9:40AM
0.55
9:59PM
0.38
10:58AM
0.61
11:07PM
0.48
12:32PM
0.61
12:29AM
0.53
2:00PM
0.51
1:49AM
0.51
3:06PM
0.38
2:55AM
0.44
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Sunrise6:15--6:15--6:16--6:16--6:16--6:16--6:16--6:16--6:16--6:16--6:16--6:16--
Sunset-6:47--6:47--6:47--6:47--6:47--6:47--6:47--6:47--6:47--6:47--6:47--6:47-
thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm clearrain showersthunderstorm part cloudthunderstorm thunderstorm cloudpart cloudpart cloudpart cloudpart cloudclearclearclearclearpart cloudrain showerspart cloudthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm part cloudpart cloudpart cloud
Rain (mm)
4543483231-22-181----------1-11124---
Temp. °C282828282828292928292929282928282828292928282928292928292828282928292928
Feels °C (?)272628282728303132313232323229272828333332323230313028302326252625282827

Short Range Forecast: Heavy rain (total 36mm), heaviest during Fri morning. Warm (max 29°C on Sun morning, min 28°C on Fri morning). Winds decreasing (fresh winds from the W on Fri afternoon, light winds from the SW by Sun afternoon).

Days 3-6 Weather Summary Heavy rain (total 24mm), heaviest during Tue night. Warm (max 29°C on Mon morning, min 26°C on Tue night). Winds increasing (calm on Tue morning, fresh winds from the WSW by Wed morning).

Days 6-9 Weather Summary Some drizzle, heaviest during Sat night. Warm (max 29°C on Thu morning, min 28°C on Thu morning). Winds increasing (calm on Thu afternoon, fresh winds from the W by Sat night).

Long Range Forecast: Light rain (total 9mm), mostly falling on Mon afternoon. Warm (max 29°C on Sun morning, min 28°C on Sun afternoon). Mainly strong winds.

  • 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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Information about the Nai Harn Beach Surf forecast

The above surf forecast table for Nai Harn Beach provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Nai Harn Beach can be found by selecting the local surf guide option on the grey menu. Our Nai Harn Beach 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 (Nai Harn Beach) 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 Nai Harn Beach 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.

Nai Harn Beach is 8 km (5 miles) from the city of Ban Chalong. If you plan a holiday in Phuket, look for hotels and other accommodation in Ban Chalong. Ban Chalong has rooms for a wide range of budgets as well as car hire and transport links.

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