High pressure is now close to New Zealand, with an advancing trough and cold front bringing a fresh S’ly change, expected to generate a strong SE surge up the sub-tropical coast as a new high moves into the Bight and strengthens. Once the high moves into the Tasman over the weekend it’ll set up a blocking pattern but we’re expecting a few small S pulses leading up to that although winds look fickle. E'ly swell from persistent tradewind fetches should continue as a fun background source of swell.

A trough hovering about the South Coast will see a N’ly flow through Sat, with good odds for a morning NW breeze and a late tilt back to the NW, especially south of Sydney. Further north freshening N’lies look more likely. A few leftover S swell trains should hold some 2 occ 3ft sets at S facing beaches but energy will be in the way down.

A big dominant high (1032hPa) is sitting over SE Australia, with a series of powerful fronts passing well to the south and the progression slowed in New Zealand longitudes. The high is slow moving, setting up a dichotomy with N’ly winds across temperate NSW and a more SE flow in a ridge along the sub-tropics. Across all regions we’ll see pulses of S’ly groundswell this week from the deep fetches located in the Far Southern Tasman. 

A front and small low are now racing across the Tasman with a high over NSW moving into the Tasman and directing a freshening N’ly flow across most of the Eastern Seaboard. So far, so spring. A complex low, front and trough then approaches from the W, bringing a flush of W’ly winds and a S swell.