Surf Forecasts:
How big are the waves at Tank Beach today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 3.5ft (1.0m), 12s period with ESE swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 5.5ft (1.7m), 12s period with ESE swell.
- Evening surf: Evening surf (21 Aug, local time) - 7ft (2.1m), 11s period with ESE swell.
The current surf forecast for Tank Beach at 4PM is: 2.0m 13s primary swell from a East-southeast direction and 1.2m 6s secondary swell from a Northeast direction (forecast issued at 09:00am August 21). An open ocean swell of 0.5m 9s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 3.5ft (1.0m) | 12s |
| Afternoon (21 Aug) | 5.5ft (1.7m) | 12s |
| Evening (21 Aug) | 7ft (2.1m) | 11s |
Table - waves today at Tank Beach. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 35mm), heaviest during Fri night. Warm (max 29°C on Fri morning, min 28°C on Sat afternoon). Mainly fresh winds. | ||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 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) | ESE 12 | ESE 12 | ESE 11 | ESE 13 | ESE 12 | ESE 11 | E 10 | ENE 10 | NE 10 | NE 10 | NE 10 | NNE 9 | NNE 10 | N 10 | N 9 | NNW 10 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 11 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 241 | 285 | 427 | 1256 | 1455 | 831 | 696 | 1255 | 1378 | 887 | 766 | 721 | 804 | 602 | 502 | 680 | 783 | 685 | 450 | 326 | 358 | 322 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:27PM0.61m | 00:34AM0.66m | 6:16PM0.63m | 1:23AM0.66m | 6:50PM0.65m | |||||||||||||||||
Low Tide | 8:28AM0.20m | 7:38PM0.61m | 9:20AM0.18m | 9:05PM0.62m | 10:10AM0.15m | |||||||||||||||||
 | | | |  | | | | | |  | | | |  | |  | | | | | | |
 | 6:01 | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:36 | — | — | — | — | — | — | — | 6:36 | — | — |
mm | 1 | 2 | 1 | 3 | 2 | 5 | 2 | 1 | 1 | 1 | — | 2 | 3 | 2 | — | 1 | — | 1 | 1 | 2 | 1 | 3 |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 31 | 30 | 31 | 31 | 32 | 31 | 30 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | ESE 12 | ESE 12 | ESE 11 | ESE 13 | ESE 12 | ESE 11 | E 10 | ENE 10 | NE 10 | NE 10 | NE 10 | NNE 9 | NNE 10 | N 10 | N 9 | NNW 10 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | SW 9 |
| kJ | 241 | 285 | 427 | 1256 | 1455 | 831 | 696 | 1255 | 1378 | 887 | 766 | 721 | 804 | 602 | 502 | 680 | 783 | 685 | 450 | 326 | 358 | 287 |
Swell 2 Height (m) Direction Period (s) | WSW 8 | W 8 | W 10 | W 9 | NE 6 | W 9 | NNE 8 | SE 11 | SE 11 | SE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | ENE 12 | ENE 12 | E 13 | SE 9 | NNW 11 |
| kJ | 54 | 52 | 47 | 42 | 120 | 39 | 173 | 55 | 90 | 148 | 164 | 180 | 203 | 188 | 254 | 276 | 276 | 50 | 51 | 82 | 159 | 322 |
Swell 3 Height (m) Direction Period (s) | WNW 9 | WSW 9 | WSW 9 | WSW 9 | W 9 | WSW 8 | W 9 | S 8 | — | E 14 | E 13 | E 13 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | ENE 12 | W 8 | W 8 | NE 11 | E 12 | SSE 9 |
| kJ | 25 | 44 | 44 | 43 | 40 | 27 | 38 | 5 | — | 14 | 14 | 14 | 27 | 26 | 25 | 22 | 50 | 11 | 11 | 30 | 78 | 151 |
Wind waves Height (m) Direction Period (s) | NE 6 | NE 6 | NE 6 | NE 6 | — | NNE 6 | — | W 8 | W 8 | WSW 4 | WSW 5 | WSW 5 | WSW 5 | WSW 5 | WSW 5 | — | S 9 | S 9 | S 9 | S 9 | SSW 9 | SSW 9 |
| kJ | 136 | 147 | 149 | 120 | — | 87 | — | 51 | 50 | 58 | 97 | 91 | 82 | 59 | 32 | — | 671 | 398 | 505 | 517 | 362 | 427 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 237 | 238 | 237 | 237 | 237 | 2213 | 2214 | 2194 | 2213 | 2194 | 2262 | 2262 | 2220 | 2220 | 2220 | 2220 | 2056 | 2056 | 2067 | 2067 | 2102 | 2082 |
Best forecast wave conditions in Saipan | ||||||||||||||||||||||
Best forecast wave conditions in Northern Mariana Islands | ||||||||||||||||||||||
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