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Surf Forecasts:

Nai Harn Beach surf break

Nai Harn Beach surfForecast / Phuket / Thailand

information circle12 Day Weather and Surf, issued 6 pm Wednesday 19 Nov 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
29.1° C
 (Which is slightly warmer than usual)

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 Thursday (Nov 20) at 7AM. The primary swell is predicted to be 0.6m and 6s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Nai Harn Beach in the next 12 days are 1.2m 9s and forecast to arrive on Tuesday (Nov 25) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 6s period and expected on Friday (Nov 21) at 1PM.

Wave TypeTime (+07) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Thu 20th Nov)2ft (0.6m) 6s
Best Surf 7AM (Thu 20th Nov)2ft (0.6m) 6s
Most Powerful 7PM (Tue 25th Nov)4ft (1.2m) 9s

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

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

Short Range Forecast Heavy rain (total 147mm), heaviest during Wed night. Warm (max 26°C on Wed afternoon, min 24°C on Wed night). Winds increasing (calm on Wed night, fresh winds from the E by Fri night).

Days 3-6 Weather Summary Heavy rain (total 75mm), heaviest during Sun morning. Warm (max 27°C on Sat afternoon, min 24°C on Sat night). Wind will be generally light.

Wed
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
1
1
0
0
0
0
0
0
1
1
0
0
0
0
1
0
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.1
W
0.4
SW
1
S
0.6
WSW
0.2
WSW
0.2
WSW
0.2
WSW
0.2
WSW
0.2
WSW
0.2
WSW
0.6
WSW
0.7
WSW
0.6
WSW
0.5
W
0.4
WSW
0.4
WSW
0.4
WSW
0.7
WSW
1.2
WSW
0.7
WSW
0.8
WSW
Period(s) (?)18756161515141413766666688810
Wave
Graph
(?)Metric surfscale
Energy kJ (?)6144922252221211817344430171012136718573133
Wind
(km/h)
5
SW
10
ENE
15
ENE
25
NE
15
NNE
30
ENE
20
NE
35
ENE
20
SSW
25
SW
5
WNW
15
NE
10
ENE
15
NW
10
NNE
15
ENE
10
NNE
10
NE
5
WSW
20
NNE
20
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onoffcross-
off		offoffcross-
off		offoffcross-
on		oncross-
on		offoffcrosscross-
off		cross-
off		offoffcross-
on		offoff
High Tide
/ height (m)
10:01PM
1.88
10:19AM
1.59
10:30PM
1.91
10:50AM
1.58
10:59PM
1.91
11:20AM
1.55
11:29PM
1.88
11:51AM
1.51
12:01AM
1.83
12:24PM
1.45
12:35AM
1.77
1:03PM
1.38
1:14AM
1.69
Low Tide
/ height (m)
4:22AM
0.21
4:12PM
0.26
4:52AM
0.19
4:41PM
0.27
5:22AM
0.20
5:10PM
0.30
5:54AM
0.24
5:40PM
0.34
6:28AM
0.30
6:12PM
0.40
7:06AM
0.36
6:49PM
0.48
7:50AM
0.42
Wed
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Sunrise--6:18--6:20--6:20--6:20--6:20--6:20--6:22
Sunset6:04--6:04--6:04--6:04--6:05--6:05--6:05--
thunderstorm
thunderstorm
mod rain
mod rain
heavy rain
thunderstorm
thunderstorm
thunderstorm
mod rain
mod rain
thunderstorm
thunderstorm
light rain
thunderstorm
light rain
thunderstorm
rain showers
thunderstorm
thunderstorm
mod rain
part cloud
Rain (mm)
154081028151112810262214343257-
Temp. °C262525252525252626272624252526262627272626
Feels °C (?)302927252524272627282826282729283030302827
  • 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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Latest Updates

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Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.

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View detailed surf forecast for Nai Harn Beach at:
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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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