Surf Forecasts:
How big are the waves at Tank Beach today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 4ft (1.2m), 10s period with NNE swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 3ft (0.9m), 8s period with N swell.
- Evening surf: Evening surf (18 Sep, local time) - 2ft (0.6m), 11s period with ENE swell.
The current surf forecast for Tank Beach at 6AM is: 1.4m 9s primary swell from a North direction (forecast issued at 03:00am September 18). An open ocean swell of 0.6m 9s is not directed at the surf break, a second open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 4ft (1.2m) | 10s |
| Afternoon (18 Sep) | 3ft (0.9m) | 8s |
| Evening (18 Sep) | 2ft (0.6m) | 11s |
Table - waves today at Tank Beach. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 42mm), heaviest during Sun night. Warm (max 29°C on Fri morning, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | NNE 8 | NNE 10 | N 9 | NNE 10 | NNE 10 | N 8 | ENE 11 | ENE 11 | ENE 11 | N 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NE 10 | NNW 8 | NE 11 | NE 11 | NE 10 | NE 10 | NE 10 | NE 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 293 | 305 | 347 | 258 | 201 | 95 | 79 | 78 | 82 | 76 | 79 | 81 | 87 | 122 | 125 | 128 | 128 | 108 | 137 | 187 | 180 | 170 | 192 | 184 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | glassy | on | on |
High Tide | 10:08PM0.65m | 3:20PM0.63m | 10:38PM0.64m | 4:27PM0.64m | 11:24PM0.63m | 5:13PM0.65m | ||||||||||||||||||
Low Tide | 6:33AM0.19m | 6:46PM0.61m | 7:30AM0.19m | 8:11PM0.61m | 8:27AM0.19m | 9:25PM0.60m | ||||||||||||||||||
 |  |  | | | | |  | | |  | | | | | |  | | |  | | | | | |
 | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 1 | — | 1 | — | 3 |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
Feels °C | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 32 | 31 | 32 | 32 | 33 | 33 | 33 | 34 | 34 | 34 | 35 | 34 | 34 | 34 | 34 | 33 | 32 |
Swell 1 Height (m) Direction Period (s) | NNE 8 | NNE 10 | N 9 | NNE 10 | NNE 10 | N 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | SW 8 | SW 8 | SW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NE 10 | NE 10 | NE 10 |
| kJ | 293 | 305 | 347 | 258 | 201 | 95 | 166 | 162 | 162 | 162 | 147 | 162 | 166 | 138 | 125 | 128 | 128 | 108 | 111 | 119 | 138 | 170 | 192 | 184 |
Swell 2 Height (m) Direction Period (s) | WSW 8 | S 8 | SW 9 | SW 8 | SW 9 | SW 8 | N 7 | N 8 | N 8 | N 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | NE 11 | NE 10 | NNW 9 | NNW 9 | NNW 9 |
| kJ | 45 | 43 | 67 | 86 | 132 | 97 | 70 | 74 | 78 | 76 | 79 | 81 | 87 | 122 | 123 | 123 | 120 | 120 | 117 | 187 | 180 | 138 | 138 | 138 |
Swell 3 Height (m) Direction Period (s) | S 8 | WSW 8 | S 8 | SSE 7 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | NE 10 | NE 10 | NE 10 | NE 10 | NE 9 | NE 11 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 |
| kJ | 28 | 45 | 32 | 9 | 49 | 85 | 79 | 78 | 82 | 61 | 54 | 61 | 46 | 87 | 84 | 80 | 115 | 79 | 137 | 86 | 86 | 84 | 82 | 80 |
Wind waves Height (m) Direction Period (s) | — | WSW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 4 | SW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 8 | 10 | 16 | 20 | 16 | 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 242 | 1491 | 0 | 2063 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 227 | 0 | 227 | 227 |
Best forecast wave conditions in Saipan | ||||||||||||||||||||||||
Best forecast wave conditions in Northern Mariana Islands | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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