Surf Forecasts:
Kata Beach surf forecast from 20 Aug 2026:
- Most powerful swell: Friday 21 Aug, 1AM (local time) - 1ft (0.3m), 18s period, WSW swell with 60 kJ wave energy.
Best Forecast Surf Conditions for Kata Beach this week:
The most powerful waves expected at Kata Beach in the next 16 days are 0.3m 18s and forecast to arrive on Friday (Aug 21) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Tuesday (Aug 25) at 4AM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Fri 21st Aug) | 1ft (0.3m) 18s |
Table - best surf conditions forecast for Kata Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at the surf picture over the next couple of weeks.
For the entire outlook, we’ve really only got one spot to talk about, and that’s Kata Beach. I hate to be the bearer of bad news, but this is shaping up to be a pretty lean run for waves. Right now, the ocean is flat with no swell, and that gap stretches all the way from the start of the period through to the morning of Thursday, 27th August – a solid week of nothing but small, choppy lumps.
Finally, around Thursday afternoon, 27th August, we see a pulse of very weak energy (22) pushing in from the WSW. We’re only looking at 0.7ft swell, and it’s coming with a cross-onshore wind that’ll keep things messy. Not worth paddling out for.
The conditions take a slight turn for the better on the morning of Tuesday, 1st September. We’ve got another pulse from the WSW, swell height still only 1.0ft, but the wind eases off a little. The water temperature is around 86°, feeling pretty normal for this time of year here. The combined energy is weak (72), so don’t get your hopes up. The swell period is long, over 15 seconds, which means it’ll be a drawn-out, weak groundswell – not great for a beach like this, where it tends to just roll in flat.
Wednesday, 2nd September brings another similar pulse from the WSW, with 1.0ft swell and a period of 17 seconds. Still weak energy (58), and cross-onshore winds. The shape won't be there.
Maybe the best we can honestly call a standout is the afternoon of Thursday, 3rd September. The swell is still just 0.7ft from the WSW, but the wind turns onshore from the SSW at 10 km/h. That's about as clean as it gets in this entire forecast, but honestly, with that tiny swell and weak energy (24), it’s a flat, glassy paddle rather than a surf.
Honestly, with the swell so tiny and the wind mostly cross-onshore or onshore, this stretch is a write-off. If you’re desperate for a splash, that's one thing, but for proper waves? Save your energy. Forecasts change, but this is a long dry spell for the area.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Fri morning. Warm (max 29°C on Thu afternoon, min 27°C on Fri afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 29mm), heaviest during Mon morning. Warm (max 29°C on Sun afternoon, min 28°C on Sun afternoon). Mainly fresh winds. | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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) | WSW 18 | WSW 18 | WSW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | SW 15 | W 7 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 62 | 60 | 57 | 54 | 26 | 25 | 25 | 24 | 23 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | on | cross-on | 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 | 3:05AM1.55m | 3:15PM1.23m | 4:36AM1.43m | 6:04PM1.14m | 6:56AM1.47m | 8:06PM1.27m | 8:08AM1.62m | 8:49PM1.44m | 8:49AM1.79m | 9:20PM1.61m | 9:22AM1.96m | 9:49PM1.77m | ||||||||
Low Tide | 8:25PM0.71m | 9:39AM0.89m | 9:15PM0.87m | 12:12PM0.95m | 11:40PM0.96m | 2:05PM0.81m | 1:38AM0.86m | 2:48PM0.64m | 2:31AM0.69m | 3:18PM0.46m | 3:08AM0.53m | 3:45PM0.30m | 3:41AM0.38m | |||||||
 |  |  |  |  | |  | | | |  | | |  | | | | | | | |
 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:38 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — |
mm | — | — | 4 | 1 | 2 | — | — | 3 | 2 | 3 | 7 | 5 | 2 | 1 | 4 | 3 | 3 | 1 | — | — |
Temp °C | 29 | 29 | 28 | 27 | 28 | 29 | 29 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 |
Feels °C | 29 | 31 | 30 | 30 | 31 | 32 | 31 | 30 | 30 | 30 | 29 | 28 | 28 | 29 | 28 | 27 | 28 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | WSW 18 | W 8 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | SW 15 | W 15 | W 19 | — | — | W 17 | — | — | — | — | — |
| kJ | 62 | 217 | 143 | 117 | 86 | 131 | 161 | 165 | 165 | 9 | 4 | 7 | — | — | 6 | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | WSW 18 | WSW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 60 | 57 | 54 | 26 | 25 | 25 | 24 | 23 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 7 | W 8 | — | — | — | — | — | — | W 8 | W 7 | W 7 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 |
| kJ | 349 | 90 | — | — | — | — | — | — | 68 | 195 | 198 | 324 | 330 | 419 | 513 | 420 | 442 | 501 | 409 | 421 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 19 | 1 | 1 | 1 | 1 | 1 | 1 | 19 | 1 | 604 | 19 | 640 | 19 | 641 | 640 | 641 | 640 | 640 | 641 | 641 |
Best forecast wave conditions in Phuket | ||||||||||||||||||||
Best forecast wave conditions in Thailand | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Kata Beach Surf forecast
The above surf forecast table for Kata Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kata Beach can be found by selecting the local surf guide option on the grey menu. Our Kata 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 (Kata 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 Kata 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.
Kata Beach is 5 km (3 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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