Surf Forecasts:
Kho Phan-Ngan - Haad Rin surf forecast from 18 Jul 2026:
- Most powerful swell: Saturday 18 Jul, 10PM (local time) - 0.5ft (0.1m), 6s period, SE swell with 2 kJ wave energy.
Best Forecast Surf Conditions for Kho Phan-Ngan - Haad Rin this week:
The most powerful waves expected at Kho Phan-Ngan - Haad Rin in the next 16 days are 0.1m 6s and forecast to arrive on Saturday (Jul 18) at 10PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Friday (Jul 24) at 7PM.
| Wave Type | Time (+07) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Sat 18th Jul) | 0.5ft (0.1m) 6s |
Table - best surf conditions forecast for Kho Phan-Ngan - Haad Rin over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s on offer.
Honestly, mate, I gotta be straight with you – this is a bleak stretch for the surf. The whole 16-day window from now kicks off with nothing but tiny, weak waves and poor surf conditions across the board. There’s a real long gap here with no recommendations worth paddling out for. The first few days are a write-off, and it doesn’t really get any better. The best you’re looking at is a tiny bump right at the very end, but it’s still a long way off and the quality is poor.
Let’s start with the overall pattern. The combined swell energy is weak, barely registering, with numbers like 2, 1, and 0 for most of the period. The swell is coming from the SE, but it’s only 0.3 ft with a short period of 6 seconds – that’s just wind chop, not a groundswell. The winds are offshore for most mornings, which would be a dream if we had any swell, but with nothing to work with, it’s just a clean, flat ocean.
The only spot in the region is Kho Phan-Ngan - Haad Rin. It’s an exposed east-facing beach break, but it’s inconsistent and rarely breaks, which is fitting for this forecast. The water temperature is about average for this time of year, nothing unusual.
Now, if you’re looking for a standout – there isn’t one. The best of a bad bunch comes right at the end of the forecast. On August 2nd (Sunday morning), we might see a tiny lift. The swell is still only 1 ft from the SE with a period of 6 seconds, combined energy of 9, which is still weak. Wind is WSW at 22 mph, cross-offshore, so it’ll be clean. It’s still poor surf conditions, but it’s the biggest bump we get. It’s still too small and weak to get excited about. For beginners, it’s flat, and for anyone else, it’s a frustrating day.
Given the size and the lack of any real swell, the setup looks more interesting for kite surfing than paddle surfing, if you’re into that.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 30°C on Sat night, min 27°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed night. Warm (max 30°C on Wed afternoon, min 27°C on Tue morning). Winds increasing (calm on Tue afternoon, strong winds from the W by Thu night). | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SE 6 | SE 5 | SE 5 | SE 5 | SE 6 | SE 6 | SE 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | off | off | glassy | off | off | glassy | off | off | glassy | off | off | glassy | off | off | cross-off | off | off | cross-off | off |
High Tide | 1:14AM1.12m | 1:32AM0.93m | 5:48PM0.74m | 1:10AM0.76m | 5:44PM0.88m | 6:09PM1.01m | 6:42PM1.09m | 7:20PM1.15m | |||||||||||||
Low Tide | 10:30AM0.18m | 10:10AM0.28m | 9:44AM0.34m | 8:58PM0.72m | 9:20AM0.34m | 8:58AM0.32m | 8:36AM0.29m | 8:07AM0.25m | |||||||||||||
 | |  | | |  | | | | | | | | | |  |  | | |  |  | |
 | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — |
mm | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 2 | — | 2 | 7 |
Temp °C | 28 | 29 | 30 | 28 | 30 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 30 | 29 | 28 | 29 | 28 | 27 | 26 | 27 |
Feels °C | 30 | 31 | 32 | 30 | 34 | 29 | 30 | 32 | 29 | 30 | 33 | 30 | 30 | 33 | 29 | 30 | 29 | 26 | 26 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SE 6 | NW 3 | SE 6 | SE 6 | NW 4 | SE 6 | SE 6 | NW 4 | SE 6 | SE 6 | WNW 3 | SE 6 | SE 6 | SE 5 | SE 6 | SE 5 | SE 5 | SE 5 | NW 4 | SE 6 | SE 5 |
| kJ | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 6 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | SE 6 | NW 4 | — | — | — | — | S 6 | — | — | SE 6 | SE 6 | — | — | — | SE 6 | — | — | — | SE 6 | — | SE 5 |
| kJ | 1 | 1 | — | — | — | — | 1 | — | — | 1 | 1 | — | — | — | 1 | — | — | — | 1 | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | SE 6 | — | — | SE 6 | — | — | SE 6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 1 | — | — | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 4 | — | WNW 4 | WNW 4 | WNW 4 | NW 4 | WNW 4 | — | WNW 4 | WNW 4 | — | WNW 3 | W 3 | NW 4 | WNW 4 | W 3 | NW 3 | NW 5 | WSW 3 | NW 4 | WNW 4 |
| kJ | 6 | — | 9 | 8 | 6 | 18 | 9 | — | 5 | 3 | — | 6 | 3 | 2 | 18 | 3 | 2 | 25 | 1 | 17 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 271 | 271 | 271 | 899 | 285 | 285 | 899 | 285 | 271 | 271 | 285 | 271 | 271 | 271 | 285 | 285 | 285 | 285 | 285 | 891 | 271 |
Best forecast wave conditions in Gulf of Thailand | |||||||||||||||||||||
Best forecast wave conditions in Thailand | |||||||||||||||||||||
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Information about the Kho Phan-Ngan - Haad Rin Surf forecast
The above surf forecast table for Kho Phan-Ngan - Haad Rin provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kho Phan-Ngan - Haad Rin can be found by selecting the local surf guide option on the grey menu. Our Kho Phan-Ngan - Haad Rin 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 (Kho Phan-Ngan - Haad Rin) 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 Kho Phan-Ngan - Haad Rin 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.
Kho Phan-Ngan - Haad Rin is 22 km (14 miles) from the city of Ko Samui. If you plan a holiday in Gulf of Thailand, look for hotels and other accommodation in Ko Samui. Ko Samui has rooms for a wide range of budgets as well as car hire and transport links.
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