Nai Harn Beach Surf Break

Lat Long: 7.78° N 98.30° E

Nai Harn Beach 48 hour detailed Surf Forecast

Issued: 12 pm 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nai Harn Beach sea temperature is
30.1° C
0.9° 

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


How big are the waves at Nai Harn Beach today (20 Jul):

  • Morning surf: Morning surf (20 Jul, local time) - 1.5ft (0.4m), 7s period with W swell.
  • Afternoon surf: Afternoon surf (20 Jul, local time) - 1ft (0.3m), 7s period with W swell.
  • Evening surf: Evening surf (20 Jul, local time) - 0.5ft (0.1m), 13s period with W swell.

The current surf forecast for Nai Harn Beach at 4PM is: 0.3m 7s primary swell from a West direction and 0.2m 3s secondary swell from a West-northwest direction (forecast issued at 12:00pm July 20). An open ocean swell of 0.3m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (+07) & DateWave HeightWave Period
Morning (20 Jul)1.5ft (0.4m)7s
Afternoon (20 Jul)1ft (0.3m)7s
Evening (20 Jul)0.5ft (0.1m)13s

Table - waves today at Nai Harn Beach. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 7mm), mostly falling on Mon night. Warm (max 29°C on Tue afternoon, min 28°C on Mon morning). Wind will be generally light.

Mon
20
Tuesday
21
Wednesday
22
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
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
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
W
7
0.4
W
7
0.3
W
7
0.2
W
8
0.4
W
8
0.5
W
8
0.5
W
8
0.4
W
7
0.6
W
7
0.6
W
8
0.3
WSW
7
0.7
W
8
0.7
W
8
0.7
W
8
0.7
W
8
0.7
W
8
0.8
W
8
0.8
W
7
0.8
W
6
0.9
W
6
0.9
W
6
Wave Graph
Metric surfscale
Energy kJ
17
17
8
5
20
32
28
15
39
42
11
65
63
61
55
55
71
68
44
56
56
Wind (km/h)
20
WNW
15
WNW
20
WNW
15
WNW
15
W
20
W
20
WNW
15
WNW
15
WNW
15
WNW
15
W
15
W
20
W
20
WNW
20
WNW
15
WNW
20
WNW
20
W
20
W
20
WNW
20
W
Wind State
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
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
2:20PM1.59m
3:02AM1.52m
2:59PM1.41m
3:50AM1.45m
3:48PM1.25m
Low Tide
8:18AM0.48m
8:40PM0.34m
9:05AM0.60m
9:17PM0.48m
10:03AM0.70m
clear
clear
clear
clear
clear
part cloud
clear
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:47
6:47
6:47
 mm
1
1
1
1
1
Temp °C
28
28
28
28
28
28
28
28
28
28
29
29
29
28
28
28
28
28
29
29
28
Feels °C
29
30
30
30
30
29
29
30
30
30
31
31
31
30
29
31
30
29
30
31
30
  • 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
How to use the Wavefinder 

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