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Surf Forecasts:
Nai Harn Beach surfForecast / Phuket / Thailand
48hr Weather and Surf, issued 12 am 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
31.3° C
(Which is 1.5°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 3AM is: 1.3m 6s primary swell from a West-northwest direction and 0.7m 9s secondary swell from a West-southwest direction, 0.1m 16s secondary swell from a West direction (forecast issued at 12:00am May 18). The wind direction is predicted to be cross-shore.
| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 4.5ft (1.3m) | 6s |
| Afternoon (18 May) | 3.5ft (1.1m) | 5s |
| Evening (18 May) | 0.5ft (0.1m) | 20s |
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 45mm), heaviest during Mon night. Warm (max 29°C on Mon morning, min 27°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
WNW 6 | WNW 6 | WNW 6 | W 6 | W 5 | W 9 | W 21 | W 20 | W 20 | W 5 | W 6 | SW 18 | SW 18 | W 7 | W 7 | W 7 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 17 | |
90 | 93 | 104 | 106 | 114 | 57 | 9 | 7 | 7 | 95 | 151 | 12 | 12 | 0 | 0 | 0 | 27 | 25 | 25 | 50 | 51 | 26 | 26 | 29 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | 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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | |
High Tide | 11:02PM1.75m | 11:19AM2.12m | 11:47PM1.69m | 12:02PM2.06m | 00:34AM1.59m | 12:47PM1.95m | ||||||||||||||||||
Low Tide | 4:58AM0.08m | 5:45PM0.02m | 5:40AM0.16m | 6:32PM0.08m | 6:24AM0.28m | 7:22PM0.19m | ||||||||||||||||||
 |  |  | |  | | | | | | | | | | | | | | | | | | | | |
 | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
3 | — | — | — | 2 | 1 | 3 | — | 2 | 2 | 6 | 1 | 2 | 4 | 1 | 2 | 3 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | |
Temp °C | 28 | 27 | 28 | 28 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 28 | 29 | 29 | 28 | 29 | 28 |
27 | 25 | 28 | 29 | 29 | 28 | 30 | 29 | 28 | 27 | 27 | 29 | 28 | 26 | 27 | 27 | 27 | 29 | 27 | 28 | 28 | 26 | 27 | 27 | |
Swell 1 Height (m) Direction Period (s) | WSW 9 | WSW 9 | W 9 | W 14 | W 14 | W 9 | W 15 | W 20 | W 20 | W 19 | W 19 | SW 18 | SW 18 | — | — | — | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 17 |
 kJ | 86 | 86 | 81 | 4 | 4 | 57 | 4 | 7 | 7 | 7 | 7 | 12 | 12 | — | — | — | 27 | 25 | 25 | 50 | 51 | 26 | 26 | 29 |
Swell 2 Height (m) Direction Period (s) | W 16 | W 15 | W 15 | W 21 | W 21 | W 14 | W 21 | W 15 | W 15 | W 15 | — | — | — | — | — | — | — | — | W 20 | — | — | — | — | WSW 14 |
| kJ | 5 | 5 | 4 | 9 | 9 | 4 | 9 | 4 | 4 | 4 | — | — | — | — | — | — | — | — | 7 | — | — | — | — | 21 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 6 | WNW 6 | WNW 6 | W 6 | W 5 | W 5 | W 9 | W 9 | W 8 | W 5 | W 6 | W 6 | W 6 | W 7 | W 7 | W 7 | W 8 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 |
| kJ | 90 | 93 | 104 | 106 | 114 | 57 | 153 | 150 | 173 | 95 | 151 | 196 | 247 | 356 | 400 | 447 | 408 | 315 | 298 | 282 | 243 | 243 | 211 | 240 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 641 | 646 | 641 | 772 | 782 | 782 | 4 | 782 | 782 | 782 | 782 | 782 | 797 | 797 | 748 | 744 | 748 | 24 | 24 | 641 | 782 | 782 | 744 | 636 |
Best forecast wave conditions in Phuket | ||||||||||||||||||||||||
Best forecast wave conditions in Thailand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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