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Surf Forecasts:
Nai Harn Beach surfForecast / Phuket / Thailand
48hr Weather and Surf, issued 6 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 12PM is: 0.7m 9s primary swell from a West direction and 0.1m 14s secondary swell from a West direction (forecast issued at 06:00am 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 75mm), heaviest during Mon night. Warm (max 29°C on Mon morning, min 28°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 1 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WNW 6 | W 15 | W 9 | W 9 | W 9 | W 21 | W 9 | W 20 | W 6 | W 6 | W 18 | WSW 18 | WSW 18 | SW 18 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | W 7 | W 7 | |
90 | 4 | 80 | 192 | 155 | 9 | 55 | 7 | 88 | 118 | 6 | 30 | 30 | 12 | 30 | 27 | 25 | 25 | 50 | 51 | 26 | 26 | 204 | 210 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | 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 | |||||||||||||||||||
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 | — | — | — | — | — | — | 6:07 |
 | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | 6:37 |
1 | — | — | — | 2 | 3 | — | 1 | 6 | 3 | 4 | 5 | 2 | 1 | 2 | — | 4 | 4 | 4 | 3 | 6 | 4 | 4 | 6 | |
Temp °C | 28 | 27 | 28 | 29 | 28 | 29 | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
27 | 28 | 30 | 30 | 29 | 28 | 29 | 29 | 28 | 28 | 30 | 28 | 28 | 28 | 29 | 29 | 28 | 27 | 27 | 28 | 27 | 27 | 28 | 28 | |
Swell 1 Height (m) Direction Period (s) | WSW 9 | W 15 | W 9 | W 9 | W 14 | W 15 | W 9 | W 20 | W 19 | W 19 | W 18 | WSW 18 | WSW 18 | SW 18 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 17 | WSW 15 |
 kJ | 86 | 4 | 198 | 192 | 4 | 4 | 55 | 7 | 7 | 7 | 6 | 30 | 30 | 12 | 30 | 27 | 25 | 25 | 50 | 51 | 26 | 26 | 29 | 22 |
Swell 2 Height (m) Direction Period (s) | W 15 | W 15 | 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 | 5 | 4 | 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 | W 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 9 | 9 | — | — | 4 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 6 | W 9 | W 9 | W 9 | W 9 | W 9 | WNW 5 | W 8 | W 6 | W 6 | W 6 | WNW 6 | WNW 7 | W 6 | WNW 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 |
| kJ | 90 | 281 | 80 | 79 | 155 | 185 | 43 | 173 | 88 | 118 | 151 | 170 | 180 | 247 | 332 | 278 | 303 | 264 | 223 | 211 | 199 | 199 | 204 | 210 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 641 | 24 | 4 | 4 | 4 | 797 | 782 | 782 | 782 | 782 | 782 | 797 | 797 | 744 | 744 | 24 | 24 | 744 | 645 | 744 | 782 | 646 | 4 | 24 |
Best forecast wave conditions in Phuket | ||||||||||||||||||||||||
Best forecast wave conditions in Thailand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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