Utua Mamao (Atafu) Surf Break

Lat Long: 8.56° S 172.46° W

Utua Mamao (Atafu) 48 hour detailed Surf Forecast

Issued: 12 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Utua Mamao (Atafu) sea temperature is
29.3° C
0.6° 

Utua Mamao (Atafu) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Utua Mamao (Atafu) today (20 Aug):

  • Morning surf: Morning surf (20 Aug, local time) - 3ft (0.9m), 15s period with SSW swell.
  • Afternoon surf: Afternoon surf (20 Aug, local time) - 3ft (0.9m), 15s period with SSW swell.
  • Evening surf: Evening surf (20 Aug, local time) - 3.5ft (1.0m), 14s period with SSW swell.

The current surf forecast for Utua Mamao (Atafu) at 8PM is: 1.0m 14s primary swell from a South-southwest direction and 1.3m 5s secondary swell from a East-southeast direction (forecast issued at 12:00pm August 20). An open ocean swell of 0.5m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (+13) & DateWave HeightWave Period
Morning (20 Aug)3ft (0.9m)15s
Afternoon (20 Aug)3ft (0.9m)15s
Evening (20 Aug)3.5ft (1.0m)14s

Table - waves today at Utua Mamao (Atafu). (Swell directed towards the surf break)


Short Range Forecast

Moderate rain (total 10mm), heaviest on Sat night. Warm (max 28°C on Thu afternoon, min 27°C on Thu morning). Mainly fresh winds.

Thu
20
Friday
21
Saturday
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)
0.9
SSW
15
0.9
SSW
15
1
SSW
15
1
SSW
14
1
SSW
14
1.1
SSW
14
1.2
SSW
14
1
SSW
12
1.1
SSW
12
1.2
SSW
13
1
SSW
13
1.7
ESE
7
1.8
SE
7
2
SE
7
2.1
SE
7
2.2
SE
8
2.2
SE
7
2.1
SE
7
2.1
SE
7
2.1
SE
7
2.1
SE
7
Wave Graph
Metric surfscale
Energy kJ
414
398
455
437
413
474
569
274
355
426
367
248
321
423
452
531
521
492
492
465
456
Wind (km/h)
25
ESE
25
SE
30
SE
30
SE
35
ESE
30
ESE
30
SE
35
ESE
35
ESE
35
ESE
30
ESE
35
ESE
35
ESE
35
SE
35
ESE
35
ESE
35
ESE
35
ESE
30
ESE
35
ESE
35
ESE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
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
11:34AM0.82m
00:23AM0.91m
1:13PM0.79m
1:49AM0.93m
2:31PM0.83m
Low Tide
5:33PM0.50m
7:02AM0.50m
7:06PM0.51m
8:27AM0.46m
8:23PM0.46m
cloud
part cloud
part cloud
cloud
part cloud
clear
cloud
cloud
part cloud
clear
clear
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:37
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:29
6:29
6:29
 mm
1
1
1
1
1
1
Temp °C
27
27
28
27
27
27
27
27
27
28
28
28
28
27
27
27
27
27
28
27
27
Feels °C
26
26
26
25
25
25
25
24
24
26
26
26
27
25
25
25
25
26
27
26
26
  • 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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