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Surf Forecasts:
Nai Harn Beach surfForecast / Phuket / Thailand
48hr Weather and Surf, issued 12 pm Monday 18 May 2026 +07Forecast update in hr min s Forecast update imminent
Nai Harn Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nai Harn Beach sea temperature is
31.2° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Nai Harn Beach today?
The current surf forecast for Nai Harn Beach at 7PM is: 0.1m 21s primary swell from a West direction and 0.1m 15s secondary swell from a West direction (forecast issued at 12:00pm May 18). An open ocean swell of 1.1m 9s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 0.5ft (0.1m) | 21s |
| Afternoon (18 May) | 3.5ft (1.0m) | 9s |
| Evening (18 May) | 2ft (0.6m) | 9s |
Table - waves today at Nai Harn Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 61mm), heaviest during Tue morning. Warm (max 30°C on Mon morning, min 28°C on Tue morning). Winds increasing (light winds from the WNW on Mon morning, fresh winds from the W by Wed morning). | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 21 | W 9 | W 9 | W 21 | W 9 | W 5 | W 6 | W 6 | W 18 | WSW 18 | SW 18 | SW 18 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | W 7 | W 7 | W 7 | W 7 | |
9 | 159 | 155 | 9 | 55 | 83 | 94 | 104 | 6 | 30 | 12 | 12 | 30 | 27 | 25 | 25 | 50 | 25 | 26 | 26 | 204 | 204 | 233 | 266 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 11:19AM2.12m | 11:47PM1.69m | 12:02PM2.06m | 00:34AM1.59m | 12:47PM1.95m | 1:26AM1.47m | ||||||||||||||||||
Low Tide | 5:45PM0.02m | 5:40AM0.16m | 6:32PM0.08m | 6:24AM0.28m | 7:22PM0.19m | |||||||||||||||||||
 | |  |  |  | | | |  | | | | | | | | | | | | |  | | | |
 | 6:07 | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — |
 | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | 6:37 |
— | — | 2 | 1 | — | 2 | 4 | 5 | 6 | 4 | 3 | 3 | 2 | 2 | 4 | 4 | 1 | 6 | 5 | 3 | 2 | — | — | 2 | |
Temp °C | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 |
32 | 31 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 27 | 28 | 28 | 28 | 29 | 29 | 28 | 27 | 27 | 27 | 29 | 29 | 29 | 30 | 30 | |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 14 | W 15 | W 9 | W 20 | W 19 | W 19 | W 18 | WSW 18 | SW 18 | SW 18 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 17 | WSW 15 | — | — |
 kJ | 198 | 159 | 4 | 4 | 55 | 7 | 7 | 7 | 6 | 30 | 12 | 12 | 30 | 27 | 25 | 25 | 50 | 25 | 26 | 26 | 29 | 22 | — | — |
Swell 2 Height (m) Direction Period (s) | W 14 | W 14 | W 21 | W 21 | W 20 | W 15 | W 15 | W 15 | — | — | W 13 | — | — | — | — | W 20 | — | — | — | — | WSW 14 | SW 14 | — | — |
| kJ | 4 | 4 | 9 | 9 | 7 | 4 | 4 | 4 | — | — | 3 | — | — | — | — | 7 | — | — | — | — | 21 | 8 | — | — |
Swell 3 Height (m) Direction Period (s) | W 21 | W 21 | — | — | W 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 9 | 9 | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | W 9 | W 9 | WNW 5 | W 5 | W 6 | W 6 | W 6 | W 6 | W 6 | WNW 6 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 |
| kJ | — | — | 155 | 185 | 43 | 83 | 94 | 104 | 126 | 144 | 214 | 312 | 377 | 371 | 343 | 264 | 254 | 271 | 263 | 233 | 204 | 204 | 233 | 266 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 4 | 782 | 748 | 4 | 782 | 782 | 641 | 641 | 782 | 797 | 744 | 744 | 744 | 744 | 4 | 748 | 748 | 636 | 4 | 4 | 4 | 4 | 4 |
Best forecast wave conditions in Phuket | ||||||||||||||||||||||||
Best forecast wave conditions in Thailand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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