Nai Harn Beach Surf Break

Lat Long: 7.78° N 98.30° E

Nai Harn Beach 48 hour detailed Surf Forecast

Issued: 6 pm 18 Oct 2026 (local time)

Forecast update in  hr  min

Today's Nai Harn Beach sea temperature is
30.5°C
1.7° 

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 (18 Oct):

  • Afternoon surf: Afternoon surf (18 Oct, local time) - 0.5ft (0.2m), 15s period with WSW swell.
  • Evening surf: Evening surf (18 Oct, local time) - 0.5ft (0.2m), 16s period with WSW swell.

The current surf forecast for Nai Harn Beach at 10PM is: 0.2m 16s primary swell from a West-southwest direction and 0.1m 6s secondary swell from a West direction, 0.2m 3s secondary swell from a West-northwest direction (forecast issued at 06:00pm October 18). The wind direction is predicted to be cross-onshore.

Time (+07) & DateWave HeightWave Period
Morning (18 Oct)--
Afternoon (18 Oct)0.5ft (0.2m)15s
Evening (18 Oct)0.5ft (0.2m)16s

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


Short Range Forecast

Heavy rain (total 87mm), heaviest during Tue morning. Warm (max 29°C on Sun afternoon, min 25°C on Mon afternoon). Wind will be generally light.

Sun
18
Monday
19
Tuesday
20
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
WSW
15
0.2
WSW
15
0.2
WSW
16
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
W
16
0.1
SW
16
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
W
15
0.1
W
15
0.1
SW
15
0.6
WSW
5
1
SW
5
1
SW
5
0.9
WSW
6
Wave Graph
Metric surfscale
Energy kJ
22
23
24
10
10
10
10
5
10
8
8
8
4
4
8
19
44
55
57
Wind (km/h)
15
W
10
WNW
5
W
5
W
10
WNW
5
WNW
5
WNW
10
WNW
10
WNW
10
NNW
5
N
5
NNW
5
WNW
10
W
5
WSW
15
WSW
20
W
25
W
20
WNW
Wind State
cross-on
cross
cross-on
cross-on
cross-on
glassy
glassy
cross
cross
cross-off
glassy
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
2:27PM1.10m
3:04AM1.32m
4:48PM1.04m
5:12AM1.27m
6:59PM1.16m
Low Tide
8:07PM0.77m
10:28AM0.77m
10:11PM0.88m
12:31PM0.69m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
light rain
light rain
thunderstorm
mod rain
thunderstorm
mod rain
thunderstorm
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
6:13
—
—
—
—
—
—
—
6:13
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
—
—
—
—
—
—
—
6:08
—
—
—
—
—
—
—
6:08
—
—
 mm
3
3
4
1
5
5
2
4
3
4
1
1
2
3
7
29
7
1
—
Temp °C
29
29
28
28
28
27
27
27
26
25
26
26
27
27
25
25
25
26
27
Feels °C
32
33
32
32
32
31
31
31
29
29
30
30
31
30
29
28
26
26
29
  • 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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