Java, Bali, Lombok, Sumbawa forecast by Craig Brokensha (issued Tuesday 16th June)

Best Days: Thursday onwards

This week and next week (Jun 17 - 26)

The surf's bottomed out into this morning and will remain small through tomorrow, with only a slight kick in long-range and small S/SW groundswell due to 3-4ft at exposed breaks.

Of greater importance is a strong and large but inconsistent SW groundswell due to build through Thursday, peaking overnight and easing slowly Friday and further into the weekend.

This was generated by a strong and slow moving frontal progression through the southern Indian Ocean later last week and into the weekend.

The swell should build through the day Thursday and reach 6-8ft+ across exposed breaks by dark, peaking overnight and then easing from a similar if not slightly smaller size Friday morning. Saturday morning should then see smaller and easing surf from 5-6ft+ at exposed spots. There'll also be some shorter-period S/SW swell in the mix from a cut-off low west of WA, but this will be smaller than the long-range SW energy.

The trades are due to kick up again through Thursday and become strong Friday and Saturday before easing back again into Sunday.

Later in the day Sunday a new inconsistent S/SW groundswell is due, generated by a strong polar low firing up late in our swell window to the south-west of WA last night.

This low is generating a fetch of severe-gale to storm-force W/SW winds through our southern swell window, with an inconsistent but strong S/SW groundswell due to arrive late in the day Sunday but really not offer any major size above 4ft at exposed breaks.

Monday should reveal more size to an infrequent 5-6ft at exposed breaks, backing off through the day and further from 3-4ft+ Tuesday morning.

Longer term there's nothing too significant for the rest of the week, but into the the end of the month, we've got a couple of large SW groundswells lining up for the region. This will be related to a strong node of the Long Wave Trough moving through the Indian Ocean. But we'll have a closer look at this on Thursday.

16 day Bali Forecast Graph
16 day East Java Forecast Graph
16 day Sumbawa Forecast Graph