A calm start to the week
After a wild weekend that saw over 3,000 lightning strikes across the upper North Island and hail carpeting Auckland’s suburbs, conditions improve to start the week. Monday and Tuesday bring calmer seas and fine weather to much of the country, with frosty mornings inland but sunny afternoons.
Wellington, Christchurch, and Kapiti enjoy smooth seas and light breezes through Tuesday. Boaties on Lake Taupō and Rotorua can also expect mainly fine conditions with only light winds and the odd shower. It’s an ideal chance for short trips, fishing missions, or pre-season maintenance afloat.
Trouble in the north and east
The exception lies in the North Island’s north and east coasts. MetService warns of blustery easterlies and rough seas for the Bay of Islands, Hauraki Gulf, Coromandel, and Gisborne.
- Bay of Islands: Winds rise to 30 knots gusting 40 by Tuesday, with seas building to 3–4 metres. Best avoided until Thursday.
- Hauraki Gulf: Strong easterlies gusting 35 knots whip up rough seas Tuesday, easing only late Wednesday.
- Colville Channel: Gale-force southeasterlies Tuesday evening make this a no-go zone.
- Gisborne/Tairāwhiti: Persistent rain, occasionally heavy, combines with strong easterlies through Wednesday. Coastal boating here will be hazardous.
These areas pose real risks for small craft, with strong gusts, low visibility, and heavy swell in exposed waters.
Midweek shift: front moves in
From Wednesday night the focus shifts south. A Tasman front pushes into Fiordland and Southland, driving strong northwesterlies and bursts of heavy rain. Conditions spread north through Thursday, eventually reaching the North Island on Friday.
- Fiordland & Westland: Expect rough seas and driving rain from Wednesday night.
- Cook Strait & Wairarapa: Winds rise Thursday, peaking northwest 25 knots.
- South Island high country: Behind the front on Friday, cold air brings the chance of snow to alpine roads and stations.
While Friday sees sunshine returning to eastern regions like Hawke’s Bay and Canterbury, the stronger winds mean boaties should be cautious.
Where to be and not to be
Best places for boating this week
- Wellington Harbour, Kapiti, Mana: Light winds and flat seas through Wednesday, before strengthening Thursday.
- Christchurch & Canterbury Coast: Smooth conditions until late Thursday, then only modest breezes.
- Bay of Plenty: Mostly fine with manageable swells, especially Monday–Tuesday.
- Inland lakes (Taupō, Rotorua): Calm windows midweek, perfect for a winter paddle or trout fishing.
Places to avoid
- Bay of Islands, Hauraki Gulf, Coromandel: Strong wind advisories and gale warnings Tuesday–Wednesday.
- Colville Channel: One of the roughest spots this week with gusts over 40 knots and very rough seas.
- Gisborne & northern Hawke’s Bay coast: Heavy rain and blustery southeasterlies until Wednesday.
- Fiordland & West Coast: From Wednesday night, heavy rain and northwesterlies make conditions unsafe.
Classic late August
This week’s pattern is classic late August: fine and calm to start, wild and windy to end. Boaties should make the most of early-week windows in central and southern regions, while those in the north and east should sit tight until conditions ease from Thursday.
MetService meteorologist Silvia Martino sums it up: “Winter still has one last gasp for us, as chillier air sweeps back up the country on Friday.”
Stay tuned to local forecasts, keep an eye on gale warnings, and pick your days carefully — spring is on the doorstep, but the sea isn’t finished with winter just yet.
LEARN MORE BY CHECKING OUT THE METSERVICE WEBSITE.
