Surf Forecasts:
How big are the waves at Tank Beach today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 4.5ft (1.3m), 6s period with NE swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 4.5ft (1.3m), 7s period with NE swell.
- Evening surf: Evening surf (20 Aug, local time) - 3.5ft (1.1m), 7s period with NE swell.
The current surf forecast for Tank Beach at 2AM is: 1.3m 6s primary swell from a Northeast direction and 0.4m 10s secondary swell from a Southeast direction (forecast issued at 09:00pm August 19). An open ocean swell of 0.9m 8s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 4.5ft (1.3m) | 6s |
| Afternoon (20 Aug) | 4.5ft (1.3m) | 7s |
| Evening (20 Aug) | 3.5ft (1.1m) | 7s |
Table - waves today at Tank Beach. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 25mm), heaviest during Thu morning. Warm (max 29°C on Wed night, min 29°C on Wed night). Winds increasing (light winds from the N on Fri morning, fresh winds from the WSW by Sat morning). | ||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | ||||||||||||||||
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) | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | ESE 13 | ESE 12 | ESE 12 | ESE 15 | ESE 15 | ESE 14 | E 12 |
Wave Graph  | ||||||||||||||||||
 kJ | 84 | 107 | 114 | 136 | 141 | 145 | 140 | 144 | 113 | 109 | 106 | 342 | 473 | 669 | 811 | 2290 | 2368 | 1670 |
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-on | on | on | on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 11:30PM0.68m | 4:00PM0.59m | 11:58PM0.67m | 5:27PM0.61m | ||||||||||||||
Low Tide | 5:38PM0.54m | 7:35AM0.23m | 6:24PM0.58m | 8:28AM0.20m | 7:38PM0.61m | |||||||||||||
 |  | | |  | | | | | | | | | | |  |  | | |
 | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | 1 | — | 1 | 2 | 2 | 3 | 4 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | 2 |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
Feels °C | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 33 | 33 | 33 | 34 | 32 | 33 | 33 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 8 | W 8 | W 8 | W 9 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 | ESE 12 | ESE 12 | ESE 15 | ESE 15 | ESE 14 | E 12 |
| kJ | 145 | 117 | 112 | 112 | 115 | 79 | 140 | 144 | 113 | 109 | 106 | 103 | 473 | 669 | 811 | 2290 | 2368 | 1670 |
Swell 2 Height (m) Direction Period (s) | NE 8 | SE 10 | SE 10 | SE 10 | SSE 10 | WSW 9 | W 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | ESE 13 | NE 6 | NE 8 | ESE 11 | NE 9 | NE 9 | NE 8 |
| kJ | 31 | 35 | 34 | 24 | 36 | 58 | 81 | 79 | 77 | 57 | 55 | 342 | 103 | 139 | 372 | 126 | 126 | 105 |
Swell 3 Height (m) Direction Period (s) | SE 10 | E 9 | E 9 | E 9 | E 9 | SE 9 | WSW 8 | W 9 | W 9 | W 9 | W 8 | WSW 9 | W 8 | WSW 8 | NE 6 | W 9 | W 9 | W 9 |
| kJ | 35 | 14 | 14 | 14 | 6 | 43 | 55 | 57 | 56 | 54 | 52 | 61 | 50 | 55 | 66 | 60 | 57 | 39 |
Wind waves Height (m) Direction Period (s) | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 84 | 107 | 114 | 136 | 141 | 145 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 1491 | 2231 | 249 | 249 | 249 | 227 | 249 | 249 | 227 | 227 | 227 | 243 | 237 | 237 | 237 | 237 | 227 | 227 |
Best forecast wave conditions in Saipan | ||||||||||||||||||
Best forecast wave conditions in Northern Mariana Islands | ||||||||||||||||||
Header Global | ||||||||||||||||||
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