Surf Forecasts:
How big are the waves at Dadonghai today (16 Aug):
- Morning surf: Morning surf (16 Aug, local time) - 3ft (0.9m), 8s period with SSE swell.
- Afternoon surf: Afternoon surf (16 Aug, local time) - 3ft (0.9m), 8s period with SSE swell.
- Evening surf: Evening surf (16 Aug, local time) - 3.5ft (1.0m), 8s period with SSE swell.
The current surf forecast for Dadonghai at 10PM is: 1.0m 8s primary swell from a South-southeast direction (forecast issued at 01:00pm August 16). An open ocean swell of 0.9m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Aug) | 3ft (0.9m) | 8s |
| Afternoon (16 Aug) | 3ft (0.9m) | 8s |
| Evening (16 Aug) | 3.5ft (1.0m) | 8s |
Table - waves today at Dadonghai. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 11mm), heaviest on Tue night. Warm (max 31°C on Mon morning, min 27°C on Sun night). Wind will be generally light. | |||||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | |||||||||||||||||||
11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | WSW 6 | SSE 8 | SSE 7 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | WSW 6 | WSW 6 | WSW 5 | S 7 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 83 | 81 | 105 | 140 | 137 | 99 | 73 | 69 | 54 | 58 | 73 | 71 | 99 | 81 | 79 | 58 | 54 | 53 | 40 | 37 | 64 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off |
High Tide | 1:09PM1.29m | 1:57AM1.00m | 1:54PM1.08m | 2:24AM1.13m | 2:41PM0.87m | ||||||||||||||||
Low Tide | 7:55PM0.43m | 7:42AM0.52m | 7:59PM0.52m | 8:58AM0.52m | 7:55PM0.57m | ||||||||||||||||
 | | |  | |  | | |  | | | |  | | | | | |  | | | |
 | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — |
 | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 1 | 2 | 2 |
Temp °C | 30 | 30 | 30 | 28 | 28 | 27 | 28 | 29 | 31 | 31 | 31 | 29 | 28 | 27 | 27 | 29 | 31 | 31 | 30 | 28 | 28 |
Feels °C | 32 | 32 | 33 | 32 | 33 | 31 | 32 | 33 | 33 | 33 | 34 | 33 | 32 | 31 | 30 | 33 | 33 | 33 | 34 | 33 | 33 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 8 | SSE 7 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | S 7 | S 7 | WSW 5 | S 8 |
| kJ | 83 | 81 | 105 | 140 | 137 | 99 | 73 | 69 | 54 | 58 | 73 | 71 | 99 | 81 | 79 | 58 | 54 | 39 | 38 | 31 | 64 |
Swell 2 Height (m) Direction Period (s) | E 11 | E 11 | E 10 | W 6 | WSW 6 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | WSW 5 | WSW 5 | E 10 | E 11 | E 11 | E 11 | E 11 | E 11 | S 7 | WSW 5 |
| kJ | 2 | 2 | 2 | 71 | 42 | 2 | 2 | 2 | 2 | 2 | 2 | 27 | 20 | 2 | 2 | 2 | 2 | 2 | 2 | 37 | 20 |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 10 | E 10 | E 10 | E 10 | E 10 | — | — | — | E 10 | E 10 | — | E 11 | — | — | E 10 | — | SSE 9 | E 9 |
| kJ | — | — | — | 2 | 2 | 2 | 2 | 2 | — | — | — | 2 | 2 | — | 2 | — | — | 2 | — | 16 | 2 |
Wind waves Height (m) Direction Period (s) | WSW 5 | W 6 | WSW 6 | — | — | WSW 5 | WSW 5 | WSW 5 | WSW 6 | WSW 6 | WSW 5 | — | — | WSW 5 | WSW 5 | WSW 5 | WSW 6 | WSW 6 | WSW 5 | — | — |
| kJ | 37 | 80 | 95 | — | — | 27 | 43 | 47 | 50 | 50 | 36 | — | — | 17 | 35 | 50 | 53 | 53 | 40 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 803 | 1270 | 1259 | 14 | 14 | 14 | 14 | 87 | 706 | 1243 | 822 | 14 | 14 | 14 | 14 | 51 | 1678 | 1678 | 87 | 14 | 14 |
Best forecast wave conditions in Hainan | |||||||||||||||||||||
Best forecast wave conditions in China | |||||||||||||||||||||
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