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 6PM is: 1.0m 11s primary swell from a Northeast direction and 0.9m 9s secondary swell from a Northwest direction, 0.4m 3s secondary swell from a East-southeast direction (forecast issued at 09:00am September 21). The wind direction is predicted to be cross-shore.
| 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 Wed morning. Warm (max 29°C on Mon morning, min 26°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | ||||||||||||||||||||
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 |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NW 10 | NE 12 | NE 12 | NE 11 | NE 11 | NE 11 | NE 11 | NE 10 | NW 10 | NW 10 | NW 10 | NW 10 | NE 10 | NW 12 | NW 12 | NNW 12 | NNW 12 | NW 11 | NNW 11 | NW 11 | NNW 11 | NNW 11 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 188 | 273 | 309 | 273 | 229 | 224 | 220 | 216 | 204 | 208 | 208 | 204 | 139 | 336 | 336 | 378 | 371 | 298 | 251 | 166 | 215 | 190 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-on | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | glassy | cross |
High Tide | 5:45PM0.66m | 1:53AM0.62m | 6:10PM0.67m | 3:09AM0.63m | 6:30PM0.67m | |||||||||||||||||
Low Tide | 9:20AM0.19m | 10:18PM0.59m | 10:08AM0.19m | 11:00PM0.57m | 10:53AM0.19m | |||||||||||||||||
 | |  | |  |  | | | | | | |  | |  | | |  | | | | | |
 | 6:05 | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | 6:14 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:12 | — | — |
mm | 2 | 2 | — | — | 1 | — | 1 | — | 1 | 1 | 3 | 1 | — | — | 2 | 2 | 5 | 7 | 7 | 6 | — | — |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 26 | 27 | 28 | 27 | 27 | 28 | 27 | 27 | 28 | 26 | 27 | 28 |
Feels °C | 31 | 30 | 31 | 31 | 31 | 31 | 32 | 32 | 30 | 29 | 26 | 29 | 28 | 27 | 29 | 29 | 29 | 29 | 31 | 30 | 32 | 33 |
Swell 1 Height (m) Direction Period (s) | NW 10 | NE 12 | NE 12 | NE 11 | NE 11 | NE 11 | NE 11 | NE 10 | NW 10 | NW 10 | NW 10 | NW 10 | S 7 | NW 12 | NW 12 | NNW 12 | NNW 12 | NW 11 | NNW 11 | SSW 8 | NNW 11 | SW 8 |
| kJ | 188 | 273 | 309 | 273 | 229 | 224 | 220 | 216 | 204 | 208 | 208 | 204 | 85 | 336 | 336 | 378 | 371 | 298 | 251 | 110 | 215 | 110 |
Swell 2 Height (m) Direction Period (s) | NE 10 | NNW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 10 | NW 10 | NE 10 | NE 10 | NE 10 | S 6 | NE 10 | NE 10 | NE 10 | NE 9 | NE 9 | NE 9 | SSW 7 | NW 11 | SW 8 | NNW 11 |
| kJ | 142 | 168 | 134 | 128 | 103 | 128 | 142 | 200 | 200 | 167 | 142 | 68 | 139 | 113 | 110 | 101 | 99 | 99 | 117 | 166 | 94 | 190 |
Swell 3 Height (m) Direction Period (s) | SW 8 | SW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | SSE 8 | NE 10 | NW 10 | SSE 8 | SSW 8 | SE 8 | SE 8 | SE 8 | NE 9 | NE 9 | NE 9 | NE 9 |
| kJ | 60 | 60 | 39 | 37 | 37 | 37 | 36 | 35 | 24 | 23 | 6 | 139 | 98 | 12 | 68 | 18 | 17 | 17 | 99 | 101 | 101 | 86 |
Wind waves Height (m) Direction Period (s) | ENE 3 | E 3 | E 3 | ESE 3 | ESE 3 | SE 8 | SE 3 | E 3 | SSE 8 | SSE 7 | SSW 7 | — | — | SSE 8 | SE 4 | S 8 | S 8 | S 7 | — | — | — | — |
| kJ | 1 | 3 | 3 | 4 | 3 | 41 | 4 | 2 | 24 | 31 | 73 | — | — | 104 | 16 | 127 | 110 | 131 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 227 | 227 | 227 | 227 | 227 | 227 | 1491 | 1491 | 2056 | 2056 | 2059 | 1491 | 1491 | 1491 | 1491 | 1491 | 1491 | 2056 | 0 | 0 | 0 | 1491 |
Best forecast wave conditions in Saipan | ||||||||||||||||||||||
Best forecast wave conditions in Northern Mariana Islands | ||||||||||||||||||||||
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