Nai Harn Beach Surf Break

Nai Harn Beach Surf Forecast and Surf Report

Lat Long: 7.78° N 98.30° E

Issued: 12 pm 18 Jun 2026 (local time)

Forecast update in  hr  min

Today's Nai Harn Beach sea temperature is
30.1° C

Slightly warmer than usual

Nai Harn Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Nai Harn Beach surf forecast from 18 Jun 2026:

  • Most powerful swell: Sunday 21 Jun, 4PM (local time) - 5ft (1.6m), 7s period, W swell with 257 kJ wave energy.

Best Forecast Surf Conditions for Nai Harn Beach this week:

The most powerful waves expected at Nai Harn Beach in the next 16 days are 1.6m 7s and forecast to arrive on Sunday (Jun 21) 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 1.7m 7s period and expected on Tuesday (Jun 23) at 1PM.

Wave TypeTime (+07) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 4PM (Sun 21st Jun)5ft (1.6m) 7s

Table - best surf conditions forecast for Nai Harn Beach over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 10mm), heaviest on Fri night. Warm (max 29°C on Thu afternoon, min 28°C on Thu morning). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 46mm), heaviest during Mon morning. Warm (max 28°C on Sun morning, min 26°C on Tue afternoon). Mainly fresh winds.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
W
7
0.4
W
7
0.4
W
8
0.4
W
7
0.4
W
8
0.4
W
8
0.4
W
8
0.4
W
8
0.4
W
8
0.9
W
5
1.6
W
7
1.2
W
6
0.6
W
6
0.9
W
7
0.9
W
7
1.7
W
6
0.1
SW
13
1.3
W
7
1.1
W
7
1
W
7
1.2
W
8
Wave Graph
Metric surfscale
Energy kJ
17
17
18
17
18
18
18
18
26
46
257
112
28
69
71
232
7
153
113
102
163
Wind (km/h)
5
SE
5
SSW
10
WNW
10
NW
20
WNW
15
NW
15
WNW
15
W
20
WNW
15
WNW
20
WNW
25
NW
20
NW
20
WNW
25
NW
15
WNW
25
WNW
20
WNW
20
WNW
25
W
25
W
Wind State
cross
glassy
cross
cross
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross
cross-on
cross-on
cross-on
cross
cross-on
cross-on
High Tide
12:42PM1.98m
1:23AM1.55m
1:28PM1.87m
2:13AM1.49m
2:14PM1.72m
3:06AM1.44m
3:04PM1.56m
4:05AM1.41m
4:00PM1.41m
5:08AM1.40m
5:07PM1.29m
6:13AM1.43m
6:22PM1.23m
Low Tide
7:16PM0.11m
7:10AM0.37m
8:02PM0.20m
7:59AM0.48m
8:50PM0.30m
8:55AM0.59m
9:39PM0.40m
10:00AM0.68m
10:32PM0.49m
11:16AM0.72m
11:30PM0.55m
12:37PM0.70m
00:30AM0.58m
thunderstorm
part cloud
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
thunderstorm
mod rain
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:11
6:11
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:45
6:45
6:45
6:45
6:45
6:45
 mm
1
5
2
1
1
5
15
6
2
6
10
2
5
7
2
Temp °C
28
29
29
29
29
29
29
29
28
28
28
27
27
28
28
27
27
28
28
27
27
Feels °C
32
33
33
31
31
32
31
31
30
30
29
28
28
29
29
28
28
29
29
27
26
Swell 1
Height (m)
Direction
Period (s)
0.4
W
7
0.4
W
7
0.4
W
8
0.4
W
7
0.4
W
8
0.4
W
8
0.4
W
8
0.4
W
8
0.4
W
8
0.4
WSW
8
0.2
WSW
15
0.2
WSW
15
0.9
W
6
0.2
WSW
14
0.2
WSW
14
0.1
SW
14
0.1
SW
13
0.1
W
13
1.1
W
7
0.2
WSW
16
0.1
W
16
Energy kJ
17
17
18
17
18
18
18
18
19
19
23
21
64
20
19
7
7
3
113
25
5
Swell 2
Height (m)
Direction
Period (s)
0.1
W
14
0.1
W
13
0.2
S
4
0.2
S
4
0.1
W
13
0.1
W
18
0.2
WSW
16
0.2
WSW
16
0.3
WSW
8
0.1
W
16
0.1
W
16
0.1
W
13
0.1
W
12
Energy kJ
4
4
1
1
3
6
26
25
12
5
5
3
3
Swell 3
Height (m)
Direction
Period (s)
0.1
W
13
0.1
W
13
0.1
W
13
0.1
W
13
0.1
W
18
0.1
W
13
0.1
W
13
0.1
W
12
0.2
WSW
15
0.1
W
13
Energy kJ
4
4
4
3
6
3
3
3
21
3
Wind waves
Height (m)
Direction
Period (s)
0.2
WNW
2
0.2
WNW
2
0.3
WNW
3
0.6
W
4
0.9
W
5
1.6
W
7
1.2
W
6
0.6
W
6
0.9
W
7
0.9
W
7
1.7
W
6
1.7
W
6
1.3
W
7
1
W
7
1.2
W
8
Energy kJ
1
1
2
14
46
257
112
28
69
71
232
233
153
102
163
Nearest Offshore or Glassy
Rating
(10 max)
1
3
1
1
1
1
1
4
1
1
2
3
3
1
4
2
3
1
1
1
1
Distance (km)
97
635
102
106
636
102
102
635
4
4
4
645
645
4
782
4
797
4
4
4
24
Best forecast wave conditions in Phuket
Rating
(10 max)
1
1
2
1
2
1
1
1
1
Best forecast wave conditions in Thailand
Rating
(10 max)
1
1
1
1
1
1
1
2
1
2
1
1
1
1
Header Global
Rating
(10 max)
5
9
5
6
7
4
9
5
9
4
7
7
5
6
5
6
5
7
9
8
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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 16 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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