Tank Beach surfForecast / Saipan / Northern Mariana Islands

information circle48hr Weather and Surf, issued 3 am Monday 18 May 2026 ChST
Forecast update in hr  min  s Forecast update imminent
Tank Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tank Beach sea temperature is
28.7° C
(Which is normal for this time of year)

How big are the waves at Tank Beach today?

The current surf forecast for Tank Beach at 6AM is: 2.0m 9s primary swell from a East direction and 0.3m 9s secondary swell from a North-northeast direction (forecast issued at 03:00am May 18). The wind direction is predicted to be cross-onshore.

Time (ChST) & DateWave HeightWave Period
Morning (18 May)6.5ft (2.0m)9s
Afternoon (18 May)7ft (2.2m)9s
Evening (18 May)7ft (2.2m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 4mm), mostly falling on Mon afternoon. Warm (max 28°C on Mon morning, min 27°C on Mon afternoon). Mainly fresh winds.

Monday
18
Tuesday
19
Wednesday
20
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
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
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
2
E
9
2
E
9
2
E
9
2
E
9
2.1
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.3
E
9
2.3
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.1
E
9
2.1
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.1
E
9
2.1
E
9
Wave Graph
Metric surfscale
Energy kJ
695
695
693
678
748
805
788
792
792
818
818
818
893
865
800
800
800
731
731
783
777
759
694
694
Wind (km/h)
25
E
30
E
35
E
30
E
35
E
30
E
30
E
35
ENE
30
E
35
ENE
35
ENE
35
E
35
E
30
E
30
E
35
E
35
E
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
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
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
6:30AM0.76m
10:52PM0.78m
7:11AM0.76m
11:54PM0.79m
7:59AM0.74m
Low Tide
2:21AM0.66m
2:38PM-0.06m
3:24AM0.68m
3:30PM-0.06m
4:32AM0.68m
4:24PM-0.03m
clear
part cloud
clear
clear
part cloud
part cloud
thunderstorm
clear
clear
part cloud
clear
clear
clear
thunderstorm
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:47
5:47
5:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:38
6:38
6:38
1
1
Temp °C
28
28
28
28
28
27
28
28
28
27
27
27
28
28
28
28
28
28
28
28
28
28
28
28
28
28
27
27
27
26
27
27
27
26
25
25
27
27
28
27
27
27
27
27
27
28
28
28
Swell 1
Height (m)
Direction
Period (s)
0.3
NNE
9
0.3
NNE
9
0.3
NNE
9
0.3
NNE
9
0.2
NNE
9
0.2
NNE
9
0.2
NNE
9
0.3
NNE
9
0.3
NNE
9
0.3
NNE
9
0.2
NNE
9
0.3
NNE
9
0.2
NNE
9
0.3
NNE
9
0.3
NNE
9
0.2
NNE
9
0.2
NNE
9
0.2
NNE
9
0.2
NNE
9
0.2
NNE
10
0.2
NNE
10
0.2
NNE
10
0.3
NNE
10
0.3
NNE
10
Energy kJ
15
15
16
16
8
8
8
16
16
16
8
15
8
16
16
8
8
7
7
10
10
10
19
18
Swell 2
Height (m)
Direction
Period (s)
0.2
N
7
0.2
N
7
0.2
N
7
0.1
N
8
0.1
NE
11
0.2
NNE
11
0.2
NNE
11
0.2
NNE
11
0.1
NE
8
0.1
NE
8
0.1
N
13
0.1
N
13
Energy kJ
4
4
4
1
5
12
11
11
3
3
3
3
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
2
E
9
2
E
9
2
E
9
2
E
9
2.1
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.3
E
9
2.3
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.1
E
9
2.1
E
9
2.2
E
9
2.2
E
9
2.2
E
9
2.1
E
9
2.1
E
9
Energy kJ
695
695
693
678
748
805
788
792
792
818
818
818
893
865
800
800
800
731
731
783
777
759
694
694
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
1
1
Distance (km)
2075
2056
2056
2056
2056
2061
2056
2056
2056
2056
2056
2056
2056
2058
2063
2059
2056
1491
1491
1491
1491
1491
2056
2056
Best forecast wave conditions in Saipan
Rating
(10 max)
Best forecast wave conditions in Northern Mariana Islands
Rating
(10 max)
Header Global
Rating
(10 max)
8
6
4
4
5
7
5
4
5
4
4
4
4
4
4
4
4
4
4
4
5
4
4
5
  • 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

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