Surf Forecasts:
Tank Beach surf forecast from 13 Oct 2026:
- Best quality surf: Sunday 18 Oct, 10PM (local time) - 20ft (6.0m), 13s period, E swell with cross-shore winds.
- Most powerful swell: Monday 19 Oct, 1AM (local time) - 25ft (7.5m), 14s period, E swell with 20,279 kJ wave energy.
- Next surfable swell (1★+): Sunday 18 Oct, 10PM (local time) - 20ft (6.0m), 13s period with E swell.
Best Forecast Surf Conditions for Tank Beach this week:
The surf forecast for Tank Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Oct 18) at 10PM. The primary swell is predicted to be 6.0m and 13s period with a secondary swell of 4.0m and 10s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Tank Beach in the next 16 days are 7.5m 14s and forecast to arrive on Monday (Oct 19) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 7.5m 10s period and expected on Monday (Oct 19) at 10AM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 18th Oct) | 20ft (6.0m) 13s |
| Best Surf | 10PM (Sun 18th Oct) | 20ft (6.0m) 13s |
| Most Powerful | 1AM (Mon 19th Oct) | 25ft (7.5m) 14s |
Table - best surf conditions forecast for Tank Beach over the next 16 days.
Short Range ForecastModerate rain (total 16mm), heaviest on Thu morning. Warm (max 28°C on Wed morning, min 27°C on Wed morning). Winds increasing (light winds from the ENE on Wed morning, fresh winds from the NNE by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 38mm), heaviest during Sat night. Warm (max 28°C on Sat morning, min 26°C on Sun night). Winds increasing (fresh winds from the NNE on Sat morning, severe gales from the SE by Sun night). | ||||||||||||||||||||
Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | NE 9 | NE 9 | ENE 12 | ENE 11 | E 12 | E 14 | NE 10 | ENE 9 | NE 10 | ENE 9 | NE 9 | NE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 90 | 90 | 108 | 108 | 106 | 160 | 239 | 251 | 449 | 688 | 861 | 2783 | 4107 | 5888 | 20279 | 373 | 165 | 102 | 78 | 84 | 62 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:13AM0.68m | 8:05PM0.66m | 12:18PM0.67m | 8:26PM0.65m | 1:26PM0.67m | 8:49PM0.63m | 2:31PM0.67m | 9:17PM0.62m | 3:24PM0.67m | 10:06PM0.60m | 4:02PM0.68m | 11:37PM0.58m | 4:28PM0.68m | 1:28AM0.57m | |||||||
Low Tide | 3:55PM0.59m | 4:05AM0.14m | 4:48PM0.61m | 4:50AM0.15m | 5:53PM0.62m | 5:39AM0.16m | 7:17PM0.61m | 6:32AM0.18m | 8:51PM0.60m | 7:26AM0.20m | 9:41PM0.58m | 8:18AM0.23m | 10:14PM0.54m | ||||||||
 | |  |  | |  | | | |  | | | | |  | | | | | | | |
 | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 5:57 | — | — | 5:57 | — | — | 5:55 | — | — | 5:54 | — | — | 5:54 | — | — | 5:53 | — | — | 5:53 | — |
mm | — | — | 2 | 6 | 2 | 1 | 1 | 1 | 3 | — | 1 | 10 | 4 | 4 | 6 | 5 | 2 | 6 | 1 | 1 | 2 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 32 | 32 | 31 | 31 | 30 | 29 | 29 | 28 | 28 | 27 | 27 | 25 | 23 | 20 | 18 | 21 | 23 | 25 | 26 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 12 | N 10 | N 10 | N 10 | SE 9 | SE 10 | — | SE 9 | E 12 | E 14 | NE 10 | W 10 | WNW 11 | WNW 11 | WNW 12 | WNW 12 |
| kJ | 90 | 90 | 108 | 108 | 106 | 55 | 54 | 73 | 73 | 13 | 14 | — | 3 | 5888 | 20279 | 373 | 1832 | 974 | 745 | 976 | 1207 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 8 | NNW 8 | N 10 | N 10 | N 9 | ENE 11 | ENE 11 | SE 9 | NE 13 | SE 10 | — | — | — | — | N 13 | ENE 9 | NE 10 | ENE 9 | NE 9 | NE 9 |
| kJ | 69 | 49 | 21 | 98 | 68 | 26 | 47 | 78 | 13 | 7 | 23 | — | — | — | — | 168 | 165 | 102 | 78 | 84 | 62 |
Swell 3 Height (m) Direction Period (s) | ENE 13 | ENE 13 | N 9 | ENE 12 | ENE 12 | NNW 9 | SE 10 | SE 9 | — | — | — | — | — | — | — | NE 12 | NE 11 | — | — | — | NE 9 |
| kJ | 16 | 18 | 28 | 57 | 56 | 16 | 32 | 30 | — | — | — | — | — | — | — | 114 | 45 | — | — | — | 62 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | ENE 8 | ENE 8 | ENE 9 | ENE 9 | NE 9 | NE 9 | ENE 12 | ENE 11 | N 8 | N 10 | SSW 10 | S 9 | S 9 | SSW 9 | SSW 9 | SSW 8 |
| kJ | — | — | — | — | — | 160 | 239 | 251 | 449 | 688 | 861 | 2783 | 4107 | 643 | 6567 | 10858 | 3361 | 2695 | 2002 | 1343 | 878 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 227 | 227 | 227 | 227 | 229 | 1491 | 1491 | 1491 | 1491 | 1491 | 1491 | 1491 | 1491 | 1491 | 1491 | 1491 | 1491 | 2056 | 2056 | 2067 | 2056 |
Best forecast wave conditions in Saipan | |||||||||||||||||||||
Best forecast wave conditions in Northern Mariana Islands | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Tank Beach 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.
Information about the Tank Beach Surf forecast
The above surf forecast table for Tank Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tank Beach can be found by selecting the local surf guide option on the grey menu. Our Tank Beach surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Tank Beach) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Tank Beach may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Tank Beach is 19 km (12 miles) from Saipan. If you plan a holiday in Saipan, look for hotels and other accommodation in Saipan. Saipan has rooms for a wide range of budgets as well as car hire and transport links.
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