Surf Forecasts:
How big are the waves at Tank Beach today (20 Sep):
- Afternoon surf: Afternoon surf (20 Sep, local time) - 3.5ft (1.0m), 8s period with NNW swell.
- Evening surf: Evening surf (20 Sep, local time) - 3.5ft (1.0m), 8s period with NNW swell.
The current surf forecast for Tank Beach at 12AM is: 1.0m 8s primary swell from a North-northwest direction (forecast issued at 03:00pm September 19). An open ocean swell of 0.9m 8s is not directed at the surf break. The wind direction is predicted to be glassy and the swell rating is 2.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | - | - |
| Afternoon (20 Sep) | 3.5ft (1.0m) | 8s |
| Evening (20 Sep) | 3.5ft (1.0m) | 8s |
Table - waves today at Tank Beach. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 13mm), heaviest on Sun night. Warm (max 29°C on Sat afternoon, min 28°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | ||||||||||||||||||
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) | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NE 10 | NNW 8 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NW 10 | NW 10 | NW 10 | NNW 10 | NE 12 | NE 12 | NE 11 | NE 11 | NE 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 93 | 116 | 122 | 125 | 128 | 81 | 235 | 281 | 240 | 235 | 196 | 211 | 211 | 220 | 168 | 273 | 309 | 273 | 229 | 224 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | glassy | glassy | glassy | glassy | on | cross-on | on | on | on | on | glassy | glassy | glassy | glassy | on | cross-on | cross-on | cross |
High Tide | 4:27PM0.64m | 11:24PM0.63m | 5:13PM0.65m | 00:33AM0.62m | 5:45PM0.66m | |||||||||||||||
Low Tide | 8:11PM0.61m | 8:27AM0.19m | 9:25PM0.60m | 9:20AM0.19m | ||||||||||||||||
 |  |  | |  | | | | | | | | |  |  | | | | | | |
 | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:14 | — | — |
mm | — | — | 1 | 1 | — | — | — | — | — | — | — | 1 | 4 | — | 2 | — | — | — | — | 1 |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 |
Feels °C | 33 | 34 | 35 | 35 | 35 | 35 | 33 | 34 | 34 | 33 | 33 | 34 | 33 | 33 | 33 | 34 | 33 | 33 | 32 | 33 |
Swell 1 Height (m) Direction Period (s) | WSW 8 | WSW 8 | NNW 8 | NNW 8 | NNW 8 | WSW 8 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NW 10 | NW 10 | NW 10 | NNW 10 | NE 12 | NE 12 | NE 11 | NE 11 | NE 11 |
| kJ | 123 | 123 | 122 | 125 | 128 | 88 | 235 | 281 | 240 | 235 | 196 | 211 | 211 | 220 | 168 | 273 | 309 | 273 | 229 | 224 |
Swell 2 Height (m) Direction Period (s) | NNW 8 | NNW 8 | WSW 8 | WSW 8 | WSW 8 | NNW 8 | NE 11 | NE 11 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NNW 10 | NNW 10 | NW 9 | NW 9 | NW 9 |
| kJ | 93 | 116 | 123 | 123 | 108 | 80 | 191 | 187 | 177 | 196 | 188 | 181 | 184 | 160 | 142 | 164 | 161 | 125 | 101 | 84 |
Swell 3 Height (m) Direction Period (s) | SSE 8 | NE 10 | NE 10 | NE 10 | NE 10 | NE 9 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 |
| kJ | 46 | 85 | 84 | 98 | 115 | 81 | 86 | 86 | 84 | 84 | 82 | 78 | 62 | 60 | 60 | 60 | 51 | 39 | 37 | 37 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 227 | 227 | 237 | 237 | 227 | 237 | 0 | 0 | 0 | 0 | 227 | 227 | 227 | 227 |
Best forecast wave conditions in Saipan | ||||||||||||||||||||
Best forecast wave conditions in Northern Mariana Islands | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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