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Surf Forecasts:
Tank Beach surfForecast / Saipan / Northern Mariana Islands
48hr Weather and Surf, issued 3 am Thursday 21 May 2026 ChSTForecast 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
28.6° 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 8AM is: 2.1m 9s primary swell from a East direction and 0.3m 9s secondary swell from a North-northeast direction, 0.1m 12s secondary swell from a Northeast direction (forecast issued at 03:00am May 21). The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 7ft (2.1m) | 9s |
| Afternoon (21 May) | 7ft (2.1m) | 9s |
| Evening (21 May) | 6.5ft (2.0m) | 9s |
Table - waves today at Tank Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 12mm), heaviest on Fri night. Warm (max 28°C on Thu morning, min 27°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 | |
Swell Height Map |    |    |    | |||||||||||||||||||||
E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | ENE 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | |
749 | 683 | 683 | 683 | 683 | 694 | 632 | 632 | 632 | 603 | 589 | 522 | 512 | 472 | 483 | 445 | 455 | 413 | 413 | 455 | 412 | 412 | 452 | 452 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | 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 | 00:50AM0.78m | 8:53AM0.71m | 1:38AM0.77m | 10:00AM0.66m | 2:17AM0.76m | 11:25AM0.60m | ||||||||||||||||||
Low Tide | 5:46AM0.67m | 5:18PM0.03m | 7:04AM0.63m | 6:12PM0.10m | 8:17AM0.56m | 7:04PM0.19m | ||||||||||||||||||
 | |  | |  | | | |  |  | | |  | | | | | | | | | | | | |
 | — | 5:46 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:39 | — | — |
— | — | — | — | 1 | 1 | — | — | 1 | — | 1 | 1 | — | — | — | — | — | — | 4 | 2 | — | — | — | — | |
Temp °C | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 |
26 | 27 | 26 | 26 | 28 | 28 | 26 | 26 | 26 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 27 | 29 | 29 | 29 | 29 | 29 | |
Swell 1 Height (m) Direction Period (s) | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 11 | NNE 11 | NE 11 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NNE 10 | NE 10 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 |
 kJ | 17 | 17 | 16 | 16 | 8 | 8 | 7 | 12 | 12 | 29 | 27 | 26 | 25 | 25 | 24 | 18 | 23 | 17 | 16 | 16 | 16 | 16 | 15 | 15 |
Swell 2 Height (m) Direction Period (s) | NE 13 | NE 12 | NE 12 | NNE 12 | NNE 12 | NNE 12 | NNE 11 | NNE 9 | NNE 9 | SE 12 | S 8 | S 8 | S 8 | S 8 | S 8 | — | — | — | — | — | E 16 | — | E 16 | E 16 |
| kJ | 7 | 6 | 6 | 14 | 14 | 13 | 12 | 7 | 7 | 6 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | 5 | — | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | N 12 | — | — | SE 12 | SE 12 | S 8 | N 11 | — | — | — | — | — | — | — | — | — | — | E 16 | E 16 | E 16 |
| kJ | — | — | — | — | 3 | — | — | 6 | 6 | 1 | 2 | — | — | — | — | — | — | — | — | — | — | 5 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | ENE 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 |
| kJ | 749 | 683 | 683 | 683 | 683 | 694 | 632 | 632 | 632 | 603 | 589 | 522 | 512 | 472 | 483 | 445 | 455 | 413 | 413 | 455 | 412 | 412 | 452 | 452 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2056 | 2056 | 2056 | 2056 | 2060 | 2060 | 2056 | 2056 | 2056 | 2056 | 2056 | 2056 | 2056 | 2060 | 2056 | 2056 | 2056 | 2056 | 2056 | 2056 | 2056 | 2060 | 2063 | 2063 |
Best forecast wave conditions in Saipan | ||||||||||||||||||||||||
Best forecast wave conditions in Northern Mariana Islands | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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