Amatu Surf Break

Lat Long: 35.12° N 140.19° E

Amatu 48 hour detailed Surf Forecast

Issued: 2 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Amatu sea temperature is
27.2° C
0.3° 

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


How big are the waves at Amatu today (18 Aug):

  • Morning surf: Morning surf (18 Aug, local time) - 3ft (0.9m), 8s period with ESE swell.
  • Afternoon surf: Afternoon surf (18 Aug, local time) - 2.5ft (0.7m), 9s period with E swell.
  • Evening surf: Evening surf (18 Aug, local time) - 2.5ft (0.7m), 8s period with E swell.

The current surf forecast for Amatu at 8AM is: 0.9m 8s primary swell from a East-southeast direction and 0.4m 10s secondary swell from a Southeast direction (forecast issued at 02:00am August 18). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (18 Aug)3ft (0.9m)8s
Afternoon (18 Aug)2.5ft (0.7m)9s
Evening (18 Aug)2.5ft (0.7m)8s

Table - waves today at Amatu. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 28°C on Wed morning, min 24°C on Tue night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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
Height Map
Wave
Height (m)
Direction
Period (s)
1
E
9
0.9
E
9
0.9
ESE
9
0.9
ESE
8
0.7
E
9
0.7
E
9
0.7
E
8
0.7
E
8
0.6
E
9
0.6
E
9
0.6
E
8
0.5
E
9
0.5
E
9
0.5
SE
10
0.5
E
9
0.4
SE
10
0.5
E
9
0.4
SE
10
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
0.5
SE
11
Wave Graph
Metric surfscale
Energy kJ
151
122
126
107
74
73
65
66
54
55
50
39
39
49
40
36
39
37
57
59
57
57
58
58
Wind (km/h)
10
ESE
10
ESE
10
ESE
10
ESE
10
ESE
10
ESE
10
ESE
10
ESE
5
ESE
5
E
5
ENE
10
ENE
10
ESE
15
ESE
10
ESE
10
ESE
5
ESE
5
E
5
E
10
ESE
10
SE
10
SE
10
SSE
5
S
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross-on
cross-on
on
on
on
on
High Tide
7:57AM1.28m
7:38PM1.48m
8:50AM1.15m
7:59PM1.44m
10:14AM1.05m
8:20PM1.38m
Low Tide
1:43AM0.49m
1:31PM0.71m
2:25AM0.50m
1:51PM0.84m
3:17AM0.52m
2:02PM0.96m
part cloud
clear
rain showers
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:00
5:01
5:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:24
6:23
6:22
 mm
1
Temp °C
25
25
25
26
27
27
26
25
25
25
24
26
28
27
26
25
25
25
25
26
27
27
26
25
Feels °C
27
28
28
28
29
29
29
28
28
29
27
29
31
29
28
28
28
29
29
28
29
29
29
28
  • 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 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Amatu surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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