Amatu Surf Break

Lat Long: 35.12° N 140.19° E

Amatu 48 hour detailed Surf Forecast

Issued: 8 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Amatu sea temperature is
25.1°C
0.4° 

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 (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 11ft (3.5m), 12s period with SE swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 11ft (3.5m), 11s period with SE swell.
  • Evening surf: Evening surf (20 Sep, local time) - 11ft (3.5m), 12s period with SSE swell.

The current surf forecast for Amatu at 11AM is: 3.0m 11s primary swell from a Southeast direction and 0.2m 14s secondary swell from a East direction (forecast issued at 08:00am September 20). An open ocean swell of 0.9m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 11.

Time (JST) & DateWave HeightWave Period
Morning (20 Sep)11ft (3.5m)12s
Afternoon (20 Sep)11ft (3.5m)11s
Evening (20 Sep)11ft (3.5m)12s

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


Short Range Forecast

Heavy rain (total 122mm), heaviest during Sun morning. Warm (max 28°C on Tue morning, min 22°C on Sun morning). Mainly gales.

Sunday
20
Monday
21
Tuesday
22
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
!
3
3
2
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)
3
SE
12
3.5
SE
12
3
SE
11
3.5
SE
11
3.5
SE
11
3.5
SSE
12
3.5
SSE
12
4
SSE
12
4.5
SSE
12
4.5
SSE
12
4.5
SSE
12
5
SSE
12
5.5
SSE
13
7
S
14
9.5
S
15
5.5
S
14
3
SSE
11
3
S
10
2.4
S
9
2.1
S
9
1.8
S
9
1.6
S
8
Wave Graph
Metric surfscale
Energy kJ
2824
2977
2521
2529
2816
2998
3331
4995
5326
5399
6574
6970
9747
20415
39975
11431
2100
1618
1000
700
493
347
Wind (km/h)
20
NE
25
NNE
25
NNE
20
NNE
20
NNE
25
NNE
20
NE
10
E
20
ESE
25
SE
30
SE
30
SE
40
ESE
50
ESE
65
E
65
NW
45
NW
15
SW
10
SSW
5
SSE
15
ENE
25
ENE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
off
cross-off
cross-on
cross-on
glassy
cross
cross
High Tide
4:05PM1.18m
8:17PM1.20m
3:07PM1.25m
00:16AM1.17m
3:17PM1.32m
Low Tide
5:06AM0.55m
4:28PM1.18m
6:50AM0.52m
8:17PM1.09m
7:53AM0.45m
8:43PM0.97m
heavy rain
heavy rain
heavy rain
mod rain
light rain
light rain
light rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
heavy rain
light rain
cloud
cloud
part cloud
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:24
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:39
5:38
5:37
 mm
11
21
13
6
4
2
2
6
8
6
3
2
9
11
12
12
5
Temp °C
23
22
22
22
23
23
24
25
26
27
27
27
26
27
26
26
25
26
28
27
25
24
Feels °C
24
21
21
23
24
23
26
29
29
29
28
27
25
24
20
19
21
28
31
31
27
23
  • 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.


Nearest locationNearest