Surf Forecasts:
Nai Harn Beach surf forecast from 7 Oct 2026:
- Most powerful swell: Wednesday 14 Oct, 1AM (local time) - 0.5ft (0.2m), 18s period, WSW swell with 32 kJ wave energy.
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 0.2m 18s and forecast to arrive on Wednesday (Oct 14) at 1AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Oct 10) at 1AM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Wed 14th Oct) | 0.5ft (0.2m) 18s |
Table - best surf conditions forecast for Nai Harn Beach over the next 16 days.
Short Range ForecastHeavy rain (total 29mm), heaviest during Wed night. Warm (max 29°C on Wed morning, min 28°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 30mm), heaviest during Sat night. Warm (max 28°C on Sat morning, min 26°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | W 14 | W 13 | W 16 | W 16 | W 16 | W 15 | W 19 | W 18 | W 17 | W 16 | W 16 | W 13 | W 16 | W 16 | W 16 | WSW 5 | WSW 5 | W 19 | WSW 5 | WSW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 4 | 4 | 5 | 5 | 5 | 4 | 7 | 6 | 6 | 5 | 5 | 3 | 5 | 5 | 5 | 10 | 8 | 7 | 5 | 32 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | glassy | glassy |
High Tide | 8:54PM1.60m | 8:56AM1.75m | 9:27PM1.76m | 9:33AM1.82m | 9:58PM1.89m | 10:06AM1.86m | 10:26PM1.97m | 10:37AM1.85m | 10:54PM2.00m | 11:07AM1.80m | 11:21PM1.99m | 11:35AM1.72m | 11:48PM1.93m | ||||||||
Low Tide | 2:39PM0.27m | 2:51AM0.39m | 3:14PM0.15m | 3:29AM0.25m | 3:45PM0.07m | 4:04AM0.15m | 4:14PM0.04m | 4:36AM0.09m | 4:41PM0.05m | 5:06AM0.07m | 5:07PM0.09m | 5:36AM0.11m | 5:33PM0.16m | ||||||||
 | |  | | |  |  | | | | | | | | | | | | |  |  | |
 | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — |
 | — | 6:15 | — | — | 6:14 | — | — | 6:14 | — | — | 6:13 | — | — | 6:13 | — | — | 6:12 | — | — | 6:12 | — |
mm | — | — | 14 | — | — | 1 | 1 | 1 | 12 | 4 | — | 10 | 3 | 3 | 4 | 4 | 1 | 1 | 4 | — | — |
Temp °C | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 26 | 27 | 27 | 28 | 28 |
Feels °C | 32 | 31 | 30 | 30 | 31 | 30 | 31 | 30 | 30 | 32 | 29 | 31 | 29 | 28 | 30 | 29 | 29 | 31 | 31 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | SW 4 | W 14 | W 13 | W 13 | W 13 | WSW 4 | SW 4 | W 15 | W 14 | WNW 3 | W 16 | W 13 | — | SW 4 | WSW 4 | WSW 5 | WSW 5 | WSW 5 | WSW 5 | SSE 4 | SSE 4 |
| kJ | 1 | 4 | 4 | 3 | 3 | 1 | 1 | 4 | 4 | 1 | 5 | 3 | — | 1 | 2 | 5 | 10 | 8 | 5 | 4 | 3 |
Swell 2 Height (m) Direction Period (s) | SW 14 | — | — | W 16 | W 16 | W 12 | W 15 | W 12 | — | W 17 | W 11 | W 16 | SW 4 | W 16 | W 16 | NW 4 | — | W 16 | S 5 | WSW 5 | WSW 5 |
| kJ | 8 | — | — | 5 | 5 | 3 | 4 | 3 | — | 6 | 2 | 5 | 1 | 5 | 5 | 1 | — | 5 | 4 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 16 | W 12 | W 19 | W 18 | — | W 13 | W 13 | W 13 | W 13 | — | W 16 | W 16 | — | W 19 | — | WSW 18 |
| kJ | — | — | — | — | — | 5 | 3 | 7 | 6 | — | 3 | 3 | 3 | 3 | — | 5 | 5 | — | 7 | — | 32 |
Wind waves Height (m) Direction Period (s) | — | — | WNW 3 | W 3 | WNW 2 | NW 3 | — | NW 3 | NW 3 | — | WNW 3 | WNW 3 | — | — | NW 4 | — | — | — | — | — | — |
| kJ | — | — | 1 | 1 | 1 | 1 | — | 2 | 3 | — | 1 | 1 | — | — | 1 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 635 | 636 | 635 | 635 | 635 | 635 | 106 | 106 | 97 | 97 | 688 | 636 | 635 | 635 | 635 | 635 | 636 | 97 | 97 | 636 | 8 |
Best forecast wave conditions in Phuket | |||||||||||||||||||||
Best forecast wave conditions in Thailand | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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