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Tank Beach surfForecast / Saipan / Northern Mariana Islands
48hr Weather and Surf, issued 3 am Monday 18 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
28.7° 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) & Date | Wave Height | Wave 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 ForecastLight 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 | |
Swell Height Map |    |    |    | |||||||||||||||||||||
E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | |
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) | ||||||||||||||||||||||||
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 | ||||||||||||||||||
 |  |  | |  | |  | | | | | | |  | | | | | | | | | | | |
 | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — |
 | — | — | — | — | — | 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) | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NNE 10 |
 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) | — | — | — | — | N 7 | N 7 | N 7 | N 8 | — | — | — | — | — | — | — | NE 11 | NNE 11 | NNE 11 | NNE 11 | NE 8 | NE 8 | — | N 13 | N 13 |
| kJ | — | — | — | — | 4 | 4 | 4 | 1 | — | — | — | — | — | — | — | 5 | 12 | 11 | 11 | 3 | 3 | — | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
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 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 |
| 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 | ||||||||||||||||||||||||
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 | ||||||||||||||||||||||||
Best forecast wave conditions in Northern Mariana Islands | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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