Surf Forecasts:
How big are the waves at Tank Beach today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 3.5ft (1.0m), 12s period with NE swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 3.5ft (1.1m), 11s period with NE swell.
- Evening surf: Evening surf (21 Sep, local time) - 3.5ft (1.0m), 11s period with NE swell.
The current surf forecast for Tank Beach at 3AM is: 1.1m 10s primary swell from a Northwest direction and 0.9m 10s secondary swell from a Northeast direction, 0.4m 3s secondary swell from a East-northeast direction (forecast issued at 09:00pm September 20). The wind direction is predicted to be onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 3.5ft (1.0m) | 12s |
| Afternoon (21 Sep) | 3.5ft (1.1m) | 11s |
| Evening (21 Sep) | 3.5ft (1.0m) | 11s |
Table - waves today at Tank Beach. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 48mm), heaviest during Sun night. Warm (max 29°C on Sun night, min 26°C on Tue afternoon). Winds decreasing (strong winds from the SE on Tue morning, light winds from the SSW by Wed afternoon). | ||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | ||||||||||||||||
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 |  |  |  |  |  |  |  | |||||||||||
Wave Height (m) Direction Period (s) | NNW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NE 12 | NE 12 | NE 11 | NE 11 | NE 11 | NE 11 | NE 10 | NE 10 | NW 10 | NW 10 | NW 10 | NW 12 | NW 12 |
Wave Graph  | ||||||||||||||||||
 kJ | 231 | 211 | 207 | 220 | 220 | 273 | 309 | 273 | 229 | 224 | 224 | 253 | 204 | 208 | 208 | 204 | 147 | 336 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 5:13PM0.65m | 00:33AM0.62m | 5:45PM0.66m | 1:53AM0.62m | 6:10PM0.67m | |||||||||||||
Low Tide | 9:25PM0.60m | 9:20AM0.19m | 10:18PM0.59m | 10:08AM0.19m | ||||||||||||||
 | | | |  |  |  | |  | | | | | | |  | | | |
 | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:14 | — | — | — | — | — | — | — | 6:13 | — | — |
mm | 1 | 1 | 2 | 2 | 8 | 3 | — | — | — | — | 1 | 1 | 1 | 1 | 3 | — | 1 | 2 |
Temp °C | 29 | 29 | 29 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 27 | 26 | 27 |
Feels °C | 32 | 32 | 32 | 29 | 29 | 31 | 31 | 31 | 31 | 31 | 30 | 29 | 29 | 27 | 25 | 26 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NE 12 | NE 12 | NE 11 | NE 11 | NE 11 | NE 11 | NE 10 | NE 10 | NW 10 | NW 10 | NW 10 | NE 10 | NW 12 |
| kJ | 231 | 211 | 207 | 220 | 220 | 273 | 309 | 273 | 229 | 224 | 224 | 253 | 200 | 208 | 208 | 204 | 115 | 336 |
Swell 2 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NNW 10 | NNW 10 | NW 9 | NW 9 | NW 9 | NW 10 | NNW 10 | NW 10 | NE 10 | ENE 10 | ENE 10 | NW 10 | NE 10 |
| kJ | 188 | 181 | 184 | 160 | 142 | 168 | 161 | 128 | 103 | 128 | 142 | 178 | 204 | 196 | 171 | 168 | 98 | 113 |
Swell 3 Height (m) Direction Period (s) | WSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | SW 7 | SW 7 | SW 7 | SW 7 | S 7 | NW 12 | S 7 |
| kJ | 82 | 62 | 62 | 60 | 60 | 60 | 39 | 37 | 37 | 37 | 36 | 25 | 24 | 23 | 23 | 24 | 147 | 22 |
Wind waves Height (m) Direction Period (s) | — | NE 2 | ENE 3 | ENE 3 | — | E 3 | E 3 | E 4 | E 3 | ESE 4 | SE 4 | SSE 8 | SSE 8 | SSE 8 | SSE 6 | S 6 | ESE 4 | ESE 4 |
| kJ | — | 1 | 3 | 4 | — | 3 | 4 | 4 | 6 | 12 | 12 | 37 | 37 | 32 | 41 | 51 | 26 | 35 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 237 | 243 | 2213 | 227 | 227 | 237 | 227 | 227 | 227 | 227 | 227 | 2056 | 1491 | 2056 | 2061 | 1491 | 1491 | 1491 |
Best forecast wave conditions in Saipan | ||||||||||||||||||
Best forecast wave conditions in Northern Mariana Islands | ||||||||||||||||||
Header Global | ||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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.
Nearest