Plenty of swell to come, large over the weekend
Java, Bali, Lombok, Sumbawa forecast by Craig Brokensha (issued Tuesday 2nd June)
Best Days: Thursday onwards
This week and next week (Jun 3 - 12)
Easing surf from the weekend will continue through this afternoon, bottoming out into tomorrow morning.
The surf should start to build again through Thursday as a long-range and very inconsistent SW groundswell fills in, generated south-west of South Africa and Madagascar last week.
This should build to a very infrequent 5-6ft across exposed breaks later in the day Thursday and then hold a similar size into Friday morning.
Some larger S/SW groundswell is then due into later Friday afternoon/evening and more so Saturday ahead of a secondary pulse through Sunday.
This is related to a strong node of the Long Wave Trough currently moving through the southern Indian Ocean, directing an elongated and vigorous polar frontal progression through our swell window. A substantial fetch of severe-gale W/SW winds will generate two pulses of S/SW groundswell, the first for later Friday and more so Saturday to 8ft to occasionally 10ft across exposed breaks, before a secondary longer-period S/SW groundswell for Sunday to a similar size.
Fresh to strong E/SE trades are also due to kick in from tomorrow afternoon, favouring protected spots which will be a touch smaller than the exposed breaks mentioned above.
The weekend's S/SW groundswells should drop away into early next week but this will be softened by continued but weaker polar frontal activity south-west of WA.
The strongest of these trailing fronts through Thursday and Friday should generate a reinforcing S/SW groundswell for Wednesday morning to 6-8ft across exposed breaks again.
A drop in size is then due into the end of the week, with a long-range and long-period SW groundswell signal on Thursday, slowing this trend. The trades should persist but weaken a touch into the end of next week, but we'll have another look at this on Thursday.