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Surf Forecasts:
Nai Harn Beach surfForecast / Phuket / Thailand
16 Day Weather and Surf, issued 6 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)Best Forecast Surf Conditions for Nai Harn Beach this week:
The most powerful waves expected at Nai Harn Beach in the next 16 days are 1.9m 8s and forecast to arrive on Sunday (May 24) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 7s period and expected on Wednesday (May 20) at 10AM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sun 24th May) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Nai Harn Beach over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 49mm), heaviest during Thu morning. Warm (max 29°C on Wed morning, min 28°C on Wed morning). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 66mm), heaviest during Mon morning. Warm (max 29°C on Sat morning, min 25°C on Mon morning). Winds decreasing (fresh winds from the WSW on Sat morning, light winds from the SW by Mon morning). | ||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
WSW 16 | WSW 16 | WSW 15 | W 7 | W 7 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | WSW 7 | WSW 8 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | |
50 | 26 | 44 | 149 | 154 | 184 | 205 | 156 | 198 | 227 | 160 | 206 | 355 | 438 | 298 | 311 | 230 | 213 | 212 | 181 | 202 | |
Wind (km/h) | |||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | on | cross-on | cross | cross-on | cross-on | cross-on | |
High Tide | 12:47PM1.95m | 1:26AM1.47m | 1:36PM1.80m | 2:25AM1.36m | 2:32PM1.64m | 3:38AM1.29m | 3:40PM1.50m | 5:04AM1.29m | 5:00PM1.41m | 6:23AM1.36m | 6:19PM1.37m | 7:21AM1.47m | 7:23PM1.38m | ||||||||
Low Tide | 7:22PM0.19m | 7:12AM0.42m | 8:17PM0.31m | 8:07AM0.56m | 9:21PM0.42m | 9:18AM0.69m | 10:34PM0.48m | 10:50AM0.75m | 11:46PM0.50m | 12:22PM0.72m | 00:47AM0.48m | 1:31PM0.63m | 1:36AM0.45m | ||||||||
 | |  | |  |  | | | | | |  | | | | |  | |  | | | |
 | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:38 | — | — | 6:38 | — | — | 6:38 | — |
5 | 4 | 10 | 12 | 8 | — | 4 | 6 | — | 2 | 4 | 4 | 13 | 8 | 11 | 15 | 3 | 6 | — | — | — | |
Temp °C | 29 | 29 | 29 | 28 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 27 | 29 | 28 | 26 | 29 | 29 | 29 | 29 |
29 | 29 | 28 | 31 | 30 | 30 | 31 | 30 | 30 | 28 | 27 | 28 | 28 | 26 | 28 | 30 | 26 | 30 | 31 | 31 | 30 | |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 15 | W 7 | W 7 | WSW 15 | W 7 | W 7 | WSW 15 | W 8 | W 8 | SSE 4 | WSW 15 | — | W 15 | W 7 | W 14 | W 14 | W 8 | W 8 | W 8 |
 kJ | 50 | 26 | 44 | 149 | 154 | 43 | 205 | 156 | 21 | 227 | 160 | 3 | 21 | — | 4 | 311 | 4 | 4 | 212 | 181 | 202 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 14 | WSW 15 | WSW 16 | — | WSW 15 | WSW 15 | — | WSW 14 | WSW 14 | WSW 15 | — | — | — | W 14 | — | W 18 | W 14 | SW 17 | WSW 16 |
| kJ | — | — | 8 | 47 | 47 | — | 42 | 43 | — | 20 | 20 | 21 | — | — | — | 4 | — | 6 | 4 | 11 | 26 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | — | — | — | — | W 18 | W 13 | W 13 |
| kJ | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | 6 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | W 7 | W 7 | W 7 | — | — | W 7 | — | — | W 8 | — | SSE 3 | W 8 | WSW 7 | WSW 8 | W 7 | — | W 7 | W 8 | — | — | W 8 |
| kJ | 218 | 181 | 173 | — | — | 184 | — | — | 198 | — | 4 | 206 | 355 | 438 | 298 | — | 230 | 213 | — | — | 82 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 744 | 4 | 744 | 744 | 4 | 4 | 24 | 728 | 24 | 4 | 4 | 728 | 4 | 782 | 797 | 24 | 4 | 4 | 4 | 4 | 4 |
Best forecast wave conditions in Phuket | |||||||||||||||||||||
Best forecast wave conditions in Thailand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Nai Harn Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Nai Harn Beach Surf forecast
The above surf forecast table for Nai Harn Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nai Harn Beach can be found by selecting the local surf guide option on the grey menu. Our Nai Harn Beach surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Nai Harn Beach) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Nai Harn Beach may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Nai Harn Beach is 8 km (5 miles) from the city of Ban Chalong. If you plan a holiday in Phuket, look for hotels and other accommodation in Ban Chalong. Ban Chalong has rooms for a wide range of budgets as well as car hire and transport links.
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