Surfline Forecast for USA Surfing Championships

​Event window: June 15th-20th
Updated: Wednesday afternoon, June 13th 
 
Brief Overview:  A fun size, rippable mix of SSW and S swells will build through the weekend, with SSW swell peaking early next week. Slow easing SSW swell is expected for the final two days of the event window, Tuesday and Wednesday the 19th-20th. 
 
Note: Surf sizes below are face heights.   
 
FRIDAY 15th
Decreasing 3-4’ faces, occ. larger sets in the morning.     
SWELL: Fun size leftovers prevail from the swell that has produced pumping surf at Trestles the past couple days. A few leftovers sets pushing 5’ on the face possible in the morning. 
WIND: Light/variable wind early through mid morning trends light onshore W for mid to late morning. W wind 5-9kts prevails for the afternoon. 
 
SATURDAY 16th
3’ occ. 4’ faces.  S wind possible. 
SWELL: Older SSW swell leftovers as new S swell slowly builds throng the day and a bit of NW windswell mixes in.  
WIND: S wind 3-7kts in the morning may trend more SSW/SW for the afternoon 8-12kts.  
 
SUNDAY 17th
Building 3-4’ occ. 5’+ faces. 
SWELL: New SSW swell builds through the day, strongest during the afternoon hours.  Still some S swell mixing in as well. 
WIND: Weak S wind in the morning trends WSW/W 7-11kts in the afternoon. 
 
MONDAY 18th
Building 3-5’ occ. 6’ faces.
SWELL: Dominant SSW swell builds in further and should peak with secondary S swell mixing in underneath. 
WIND: Light/variable wind early through mid morning trends light onshore W for mid to late morning. W wind 6-10kts prevails for the afternoon. 
 
TUESDAY 19th
Slow easing 3-5’ faces.
SWELL: SSW swell continues, gradually easing, with small S swell mixing in underneath.  
WIND: Light/variable wind in the morning trends to light WSW wind 5-8kts in the afternoon. 
 
WEDNESDAY 20th
Easing 3-4 occ. 5’ faces.
SWELL: SSW swell trends down, strongest during the morning hours. 
WIND: Light/variable to light S wind in the morning trends to light WSW wind 5-8kts in the afternoon.
 
Swell/Surf Outlook
A rippable few days of surf is lining up during the event window thanks to overlapping Southern Hemisphere swells. On Friday we expect to see fun size leftovers from the pumping SSW swell we’ve see the past couple days. Sets, especially in the morning, should be in the waist-shoulder high range, with some lingering waves up to head high not out of the question on the morning tide push. Saturday should ease slightly from those sizes. 
 
A new mix of primary SSW swell (210-200) and secondary S swell (190-180) will be on the rise through the end of the weekend with the dominant SSW swell likely peaking on Monday. Slow easing surf is then expected for Tuesday and Wednesday. The storms that set up these respective storms weren’t exceptionally strong or large, but they were close by South Pacific storm standards, which will help in the size department. 
 
We’ll look for chest-head high sets to build over the afternoon on Sunday and especially Monday, before gradually winding down Tuesday-Wednesday. Best sets could push a bit overhead on Monday, especially for the groms. 
 
Wind/weather conditions look similar each day next week. We should see the cleanest conditions in the morning, with wind ranging from light/variable to weakly offshore. Wind should trend lightly onshore for the mid to later morning and light to perhaps moderate onshore from the WSW/W in the afternoons (but generally topping out around 10kts). 
 
- Kevin Wallis and the Surfline Forecast Team