
Surf Forecasts:
Kata Beach surf forecast from 11 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 10PM (local time) - 3ft (0.9m), 6s period, W swell with 56 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 0.9m 6s and forecast to arrive on Thursday (Aug 13) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 8s period and expected on Sunday (Aug 16) at 7PM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Thu 13th Aug) | 3ft (0.9m) 6s |
Table - best surf conditions forecast for Kata Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you: the next couple of weeks are looking pretty grim for a paddle. We’ve got a long stretch of onshore flow and messy conditions that’s going to have the surf looking more like a washing machine than anything rideable. If you’re a beginner, this is a great time to work on your duck dive or just stay on the beach. The wind stays up most of the time, and the swell window is pretty much shut for the first few days.
Looking at the whole 16-day window, there is one small window of potential that stands out, but it's for the experienced crew only, and even then, it's not going to be epic. The lack of any real swell for the first five days is a bummer, with nothing but cross-onshore winds and chop. From the 16th onward, we see a little pulse of long-period energy start to fill in, but it’s tiny. The standout, if you can call it that, will be around the 19th and 20th. We’re looking at some long-period groundswell, but it’s maxing out at a mere 1 ft. The energy is there in the water, with combined swell energy values around 84 and 64, but the size just isn't there. This is more of a longboard or foil day, and with that long period, it will be fat and soft.
Kata Beach is the only spot in the mix, and it's exposed to the SW. The water temp is sitting at 86°F, which is about normal for this time of year. The main issue is the wind. For the first five days, we have fresh cross-onshore breezes, and even some stormy conditions with rain and thunderstorms. It's just not worth the effort.
From the 16th, the swell starts to show up, but it's weak. The morning of the 16th has a small pulse from the WSW with a 16-second period, but the wind is still fresh and cross-onshore, making it lumpy. The 17th and 18th continue this theme, with similar tiny swells and the wind staying messy.
Things get a little more interesting on the 19th. The morning shows a bit more size with 1 ft from the WSW with a 20-second period and 84 units of combined energy. The wind is still cross-onshore at 16 mph, but it’s a moderate breeze, not as gnarly. This is probably your best bet for the whole period. It's not going to be clean, but it'll be the least junky. The afternoon sees a bit more wind, but the 20th holds similar small, long-period waves. The first part of next week (21st and 22nd) starts to fade, and by the 23rd and 24th, it looks like it's almost flat again with the wind howling.
Then, at the very end of the window, on the 26th, there's another tiny pulse of 1 ft swell from the WSW with a 17-18 second period. But again, the wind is up at 19 mph and onshore.
Honestly, for anyone who doesn't have a kite, this is a washout. The swell is too small and the wind is too strong and onshore. It's more of a kiteboarding window than a surfing one. If you are a seasoned surfer with a big board and low expectations, the morning of the 19th might give you a few soft, crumbly shoulders. But don’t get your hopes up.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Thu night. Warm (max 29°C on Tue afternoon, min 27°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryHeavy rain (total 44mm), heaviest during Mon morning. Warm (max 28°C on Fri afternoon, min 26°C on Sun night). Mainly fresh winds. | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | SW 15 | W 7 | SW 16 | WSW 16 | W 8 | W 8 | SW 16 | W 8 | W 8 | SW 15 |
Wave Graph | ||||||||||||||||||||
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | 10 | 25 | 0 | 0 | 9 | 0 | 0 | 8 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | cross-on |
High Tide | 9:44PM1.83m | 9:52AM2.25m | 10:26PM1.98m | 10:33AM2.33m | 11:03PM2.08m | 11:10AM2.35m | 11:38PM2.13m | 11:44AM2.29m | 00:11AM2.12m | 12:17PM2.16m | 00:43AM2.07m | 12:48PM2.00m | 1:14AM1.97m | |||||||
Low Tide | 3:36AM0.30m | 4:19PM0.02m | 4:20AM0.18m | 4:55PM-0.07m | 4:59AM0.12m | 5:30PM-0.09m | 5:36AM0.12m | 6:01PM-0.04m | 6:12AM0.17m | 6:31PM0.06m | 6:46AM0.27m | 6:59PM0.20m | ||||||||
— | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
6:44 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:42 | — | — | 6:42 | — | — | 6:42 | — | |
mm | — | 2 | — | — | — | — | — | 5 | 4 | 3 | 5 | 2 | — | 10 | 4 | 4 | 9 | 7 | 6 | 5 |
Temp °C | 29 | 28 | 28 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 27 | 28 |
Feels °C | 30 | 30 | 30 | 31 | 30 | 31 | 31 | 29 | 28 | 28 | 28 | 27 | 26 | 29 | 27 | 26 | 27 | 28 | 28 | 29 |
Swell 1 Height (m) Direction Period (s) | W 21 | W 20 | W 19 | W 18 | W 18 | W 8 | W 16 | W 16 | W 16 | W 16 | SW 15 | W 15 | SW 16 | WSW 16 | — | — | SW 16 | — | — | SW 15 |
9 | 8 | 7 | 6 | 6 | 4 | 5 | 5 | 5 | 5 | 9 | 4 | 10 | 25 | — | — | 9 | — | — | 8 | |
Swell 2 Height (m) Direction Period (s) | W 15 | W 15 | W 14 | W 14 | — | W 17 | W 13 | — | — | — | — | W 18 | — | — | — | — | — | — | — | W 24 |
5 | 4 | 4 | 4 | — | 6 | 3 | — | — | — | — | 6 | — | — | — | — | — | — | — | 11 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 24 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 11 | |
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 8 | W 7 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 |
199 | 152 | 124 | 117 | 103 | 72 | 94 | 104 | 173 | 254 | 291 | 349 | 319 | 358 | 399 | 446 | 381 | 504 | 494 | 358 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 19 | 1 | 1 | 640 | 1 | 1 | 1 | 1 | 19 | 640 | 19 | 1 | 19 | 19 | 19 | 19 | 640 | 19 | 19 | 19 |
Best forecast wave conditions in Phuket | ||||||||||||||||||||
Best forecast wave conditions in Thailand | ||||||||||||||||||||
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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.











