May 24, 2019

24051 Friday

High pressure dominates New Zealand on Friday but by the end of the day this enormous high finally starts to slip off the South Island with increasing westerlies. Saturday is mostly dry nationwide. Rain moves up the West Coast on Sunday. All regions are warmer than average by day.














14 Day Outlook Portrait w white bgThe end of the enormous high is coming but we have a few more warm and mostly dry days ahead. The high will clear the South Island on Saturday and then slowly leaves the North Island around Sunday and Monday. In saying that early next week may still be mostly dry, mild and calm over the North Island. However by Tuesday and Wednesday much windier nor'westers surge in over the South Island with heavy rain on the West Coast. By Thursday and Friday more rain moves up the country and in the very south colder air starts to come in, especially on Friday as winds turn more southerly. By June 1 a cold southerly with rain and wind will cover much of NZ.



Soil Moisture NIWA has been speaking to farmers across New Zealand and despite the drier than average rainfall this year in many regions the warmer than average Autumn so far is leading to very positive pasture growth. Rainfall and soil moisture levels are both down, especially through the upper North Island then in a line down to Manawatu (and surrounds). Next week we have some good chances of rain plus with warmer air right up until late week, when it does turn cold.












Percipitation Percipitation mm

Weather Trends


Apart from a few coastal showers here and there in the north and west most places are dry for the next few days, but next week heavy rain repeatedly comes back to the West Coast. Nationwide rain possible late next week.


Westerlies develop in the South Island and lower North Island this weekend otherwise calm for most places. Warmer sub-tropical winds on Sunday and Monday. Next week W to NW winds surge up (gales possible at times, especially in the South Island).


Warmer than average by day for Friday, Saturday and Sunday in almost every single part of the country. The nights will become milder too for most, especially the South Island (windier weather next week). Cold southerlies by the end of next week.


Next week looks stormy at times with Severe Weather likely. Heavy rain on the West Coast, strong to gale force NW winds from Cook Strait southwards. A wintry southerly change end of next week and for the first day of June.