A snowy polar blast looks set to get the ski season well
under way this week as winter finally sets in.
A cold southerly wind expected to hit on Wednesday will send
temperatures plummeting and bring snowfall to low levels.
"The air from this cold southerly has come straight from the
Antarctic ice shelf," said MetService meteorologist Peter
"On Wednesday, snow is expected to low levels over the South
Island, with snow also possible on Wellington's Rimutaka Hill
Rd later in the day."
Snow could cause problems for motorists on the South Island's
higher roads, along with the hill suburbs of Dunedin, the
Canterbury Foothills and Banks Peninsula.
"Coastal places in the South Island can expect showers laced
with hail and a daytime temperature of just 6 to 8 degrees on
Auckland will also feel the chill, with temperatures in the
city struggling to make it into the teens, he said.
"Those taking part in the Big Sleep Out overnight on Thursday
will need to wrap up warm and don a raincoat.
"A showery southwesterly and temperature of 6 degrees is
forecast, with the wind chill making the temperature feel
like 0 degrees."
WeatherWatch forecaster Philip Duncan said the cold change
was simply a matter of "winter finally arriving".
"For many places it's just going to put the temperatures down
to where they should be [for winter], so it will feel cold,
but most places won't be too severe.
"It's a cold blast, but compared to the weather we've had, it
will feel worse than it is."
The cold snap will be good news for skiers itching to hit the
slopes, with snow predicted to fall as low as 300m in some
parts of the South Island.
Looking further ahead, July is set to be a wet and windy
month once the polar blast passes, according to a
A big rain event could drench the upper North Island in the
second week of the month, also bringing rain and gales to the
rest of the country.
"At the moment the general pattern looks like more rain for
the west, and drier for the east, and temperatures look
little more average [for winter]," Mr Duncan said.
"We've got more southerlies in July than we had in June, and
they're colder southerlies as well, but because it's looking
windy and wet that limits the chances of frost."
July will be a damp and cold month for most places, he said.
"We're not seeing a lot of high pressure, just one high
crossing New Zealand in the first 20 days of July, that means
you have to rely on mountains and ranges to block rain and
cloud, because the rain and cloud is going to be coming at us
Tuesday forecast for main centres
* Auckland: Showers in the afternoon, turning heavy and with
a chance of thunder, westerly winds and a high of 16C,
falling to 9C overnight.
* Whangarei: Afternoon showers, turning heavy with a chance
of thunder, a westerly wind and a high of 17C, dropping to 9C
* Hamilton: Heavy showers in the afternoon, with a chance of
thunder, westerly and a high of 15C, falling to 6C overnight.
* Tauranga: Showers, some heavy in the afternoon, with
westerlies and a high of 16C, an overnight low of 7C.
* Wellington: Showers, some heavy, with some fine spells in
the afternoon. Northerly wind, and a high of 14C, dropping to
* Christchurch: Fine spells with a few evening showers, light
winds and a high of 13C, set to drop to 0C overnight.
* Dunedin: Showers develop in the afternoon, light winds and
a high of 10C, falling to 2C overnight.
* Upper North Island, including Auckland, Northland and
Coromandel: warmer than average and probably wetter than
* West Coast of the South Island: wetter than average, with
temperatures probably fairly average.
* Canterbury: drier than average.
* Lower South Island: average temperatures.
* Hawke's Bay, Wairarapa, and Marlborough: drier than
* The general pattern looks like more rain for the west and
drier for the east, temperatures average, and more
southerlies than in June. A windy and wet outlook limits the
chances of frost.
- Patrice Dougan of APNZ