I and Js Surf Break

Lat Long: 34.16° S 18.33° E

I and Js WaveFinder

Issued: 1 am 27 Aug 2026 (local time)

Forecast update in  hr  min

Today's I and Js sea temperature is
15.0°C
0.7° 

I and Js surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


I and Js surf forecast from 27 Aug 2026:

  • Best quality surf: Wednesday 2 Sep, 2AM (local time) - 16ft (5.0m), 14s period, SW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 2 Sep, 2AM (local time) - 16ft (5.0m), 14s period, SW swell with 9,816 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 8AM (local time) - 5ft (1.5m), 12s period with S swell.

Best Forecast Surf Conditions for I and Js this week:

The surf forecast for I and Js over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 8AM. The primary swell is predicted to be 1.5m and 12s period with a secondary swell of 1.0m and 12s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at I and Js in the next 16 days are 5.0m 14s and forecast to arrive on Wednesday (Sep 02) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 12s period and expected on Saturday (Aug 29) at 5AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 27th Aug)5ft (1.5m) 12s
Best Surf 2AM (Wed 2nd Sep)16ft (5.0m) 14s
Most Powerful 2AM (Wed 2nd Sep)16ft (5.0m) 14s

Table - best surf conditions forecast for I and Js over the next 16 days.


  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
Nearest locationNearest