Surf Forecasts:
How big are the waves at Khao Lak / Nang Thong today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 7ft (2.1m), 8s period with WSW swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 6ft (1.8m), 8s period with WSW swell.
- Evening surf: Evening surf (20 Sep, local time) - 4.5ft (1.4m), 8s period with W swell.
The current surf forecast for Khao Lak / Nang Thong at 6AM is: 2.0m 8s primary swell from a West-southwest direction and 0.4m 18s secondary swell from a Southwest direction, 0.3m 14s secondary swell from a Southwest direction (forecast issued at 12:00am September 20). The wind direction is predicted to be cross-onshore.
| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 7ft (2.1m) | 8s |
| Afternoon (20 Sep) | 6ft (1.8m) | 8s |
| Evening (20 Sep) | 4.5ft (1.4m) | 8s |
Table - waves today at Khao Lak / Nang Thong. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 125mm), heaviest during Sun morning. Warm (max 27°C on Sat night, min 24°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||||||
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) | W 8 | W 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | W 8 | W 8 | W 8 | W 8 | SW 16 | SW 16 | W 8 | SW 16 | SW 15 | W 8 | W 8 | W 8 | SW 14 | SW 14 | W 8 | W 8 | W 8 | W 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 365 | 397 | 520 | 547 | 449 | 361 | 257 | 217 | 181 | 172 | 159 | 157 | 122 | 119 | 116 | 80 | 82 | 84 | 74 | 74 | 88 | 86 | 135 | 160 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross-off | cross-off | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | glassy | glassy | glassy | cross | glassy | glassy | glassy | glassy | on | on | on |
High Tide | 3:35AM1.59m | 5:23PM1.29m | 6:14AM1.60m | 7:29PM1.46m | 7:32AM1.79m | 8:13PM1.70m | ||||||||||||||||||
Low Tide | 10:46AM1.11m | 10:20PM1.14m | 1:45PM0.95m | 1:29AM1.01m | 2:20PM0.74m | |||||||||||||||||||
 |  |  | | |  |  |  | | |  | | |  | | | | | | | | |  | | |
 | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:23 | — | — | — | — | — | — | — | 6:23 | — | — | — | — | — | — | — | 6:22 | — | — |
mm | 4 | 8 | 36 | 39 | 16 | 6 | 1 | — | 1 | — | — | — | — | — | — | — | 2 | — | — | — | 3 | 3 | — | — |
Temp °C | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 24 | 24 | 25 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 27 | 27 | 25 | 26 | 26 |
Feels °C | 29 | 28 | 28 | 26 | 28 | 28 | 30 | 29 | 28 | 28 | 29 | 30 | 31 | 32 | 31 | 30 | 30 | 30 | 29 | 32 | 31 | 28 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 18 | SW 18 | WSW 8 | WSW 8 | WSW 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | SW 14 | W 8 |
| kJ | 54 | 80 | 150 | 547 | 449 | 361 | 257 | 217 | 181 | 172 | 145 | 145 | 120 | 98 | 98 | 80 | 82 | 84 | 64 | 66 | 88 | 86 | 52 | 160 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 14 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 | S 5 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 19 | SW 14 |
| kJ | 50 | 33 | 108 | 148 | 145 | 140 | 130 | 13 | 125 | 159 | 159 | 157 | 122 | 119 | 116 | 77 | 75 | 74 | 74 | 74 | 73 | 73 | 15 | 51 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 16 | S 5 | S 5 | S 5 | S 5 | S 5 | — | — | — | — | — | — | — | SW 19 | SW 20 | SW 19 | SW 19 |
| kJ | — | — | — | — | — | — | — | 127 | 8 | 4 | 2 | 2 | 2 | — | — | — | — | — | — | — | 15 | 15 | 14 | 14 |
Wind waves Height (m) Direction Period (s) | W 8 | W 8 | WSW 8 | — | — | S 5 | S 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 2 | — | W 8 | — |
| kJ | 365 | 397 | 520 | — | — | 23 | 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 135 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 73 | 73 | 62 | 724 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 730 | 73 | 73 |
Best forecast wave conditions in Andaman Sea | ||||||||||||||||||||||||
Best forecast wave conditions in Thailand | ||||||||||||||||||||||||
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