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Surf Forecasts:
Nai Harn Beach surfForecast / Phuket / Thailand
48hr Weather and Surf, issued 12 am Wednesday 20 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
31.1° C
(Which is 1.2°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 6AM is: 0.2m 16s primary swell from a West-southwest direction and 0.1m 20s secondary swell from a West direction (forecast issued at 12:00am May 20). An open ocean swell of 1.5m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 1ft (0.3m) | 16s |
| Afternoon (20 May) | 0.5ft (0.2m) | 16s |
| Evening (20 May) | 0.5ft (0.2m) | 17s |
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 44mm), heaviest during Wed night. Warm (max 30°C on Fri morning, min 28°C on Wed night). Winds decreasing (fresh winds from the WNW on Tue night, light winds from the WSW by Thu morning). | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 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 |    |    |    | |||||||||||||||||||||
WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 17 | SW 17 | WSW 15 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | |
27 | 25 | 25 | 50 | 51 | 26 | 26 | 29 | 11 | 45 | 94 | 77 | 131 | 150 | 152 | 154 | 159 | 173 | 181 | 186 | 228 | 228 | 196 | 196 | |
Wind (km/h) | ||||||||||||||||||||||||
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 | on | on | cross-on | on | |
High Tide | 00:34AM1.59m | 12:47PM1.95m | 1:26AM1.47m | 1:36PM1.80m | 2:25AM1.36m | 2:32PM1.64m | ||||||||||||||||||
Low Tide | 6:24AM0.28m | 7:22PM0.19m | 7:12AM0.42m | 8:17PM0.31m | 8:07AM0.56m | 9:21PM0.42m | ||||||||||||||||||
 | |  | | | |  | |  | | | | | | | | |  |  |  | | | | | |
 | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
— | — | 2 | 1 | 4 | 2 | 1 | 2 | 6 | 6 | 4 | 4 | 3 | 2 | 2 | 1 | — | — | — | — | — | — | 1 | 1 | |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 29 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 29 | 29 | 29 |
29 | 29 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 29 | 29 | 31 | 30 | 30 | 31 | 30 | 29 | 29 | 28 | 29 | 31 | 30 | 30 | 29 | |
Swell 1 Height (m) Direction Period (s) | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 17 | SW 17 | WSW 15 | W 7 | W 7 | W 7 | WSW 15 | WSW 15 | W 7 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | WSW 15 |
 kJ | 27 | 25 | 25 | 50 | 51 | 26 | 26 | 29 | 11 | 45 | 211 | 159 | 131 | 47 | 45 | 154 | 159 | 173 | 181 | 186 | 228 | 228 | 196 | 43 |
Swell 2 Height (m) Direction Period (s) | — | — | W 20 | — | — | — | — | WSW 14 | SW 14 | — | WSW 15 | WSW 15 | WSW 16 | — | — | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | — |
| kJ | — | — | 7 | — | — | — | — | 21 | 8 | — | 45 | 47 | 47 | — | — | 44 | 43 | 42 | 42 | 42 | 42 | 43 | 43 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 18 | W 18 | W 18 | S 4 | S 4 | S 4 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 6 | 6 | 1 | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | — | WSW 7 | — | S 4 | S 4 | — | — | — | W 8 |
| kJ | 270 | 240 | 212 | 187 | 187 | 181 | 202 | 199 | 220 | 255 | 94 | 77 | 61 | 150 | 152 | — | 63 | — | 3 | 3 | — | — | — | 196 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 744 | 744 | 4 | 4 | 4 | 748 | 744 | 744 | 744 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 24 | 24 | 24 | 728 | 24 | 24 | 4 | 782 |
Best forecast wave conditions in Phuket | ||||||||||||||||||||||||
Best forecast wave conditions in Thailand | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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