Nias, Mentawai, South Sumatra forecast by Craig Brokensha (issued Thursday 23rd Jul)

Best Days: Most days over the coming period

This week and next week (Jul 24 – 31)

This morning should of started really slow, but a new S'ly swell should be building across exposed breaks, with a peak due tomorrow to an inconsistent 4-6ft. A slow drop is then due into Saturday and further Sunday.

Winds should become lighter from the S/SE over the coming days before picking up again through next week from the S/SE-SE.

Next week will continue to be rather average with a couple of inconsistent pulses of S'ly and S/SW groundswell Monday morning and Wednesday/Thursday respectively but to the 4-5ft range across swell magnets.

Later in the week we're now looking at some better S/SW groundswell from a strong and multi-staged polar frontal progression firing up south-east of South Africa over the weekend.

This should produce an inconsistent but good S/SW groundswell for Friday coming in at an infrequent 6ft+ across exposed breaks, with a couple of smaller reinforcing pulses through the following weekend, slowing the easing trend. We'll have a closer look at this Tuesday though.

16 day Mentawai forecast graph
16 day Nias forecast graph
16 day South Sumatra forecast graph