September’s weather pattern looks to carry on into October with big highs and big low pressure systems moving through. It means continued variety in our weather and, generally speaking, warmer than average weather.
However, October’s first week includes a significant southerly blast for NZ, which is likely followed by frosty high pressure then milder weather returning towards the middle of the month. The cold blast, around October 5 and 6, could be a significant one – especially for newborn livestock in both the South Island and lower half of the North Island. This airflow around then has the possibility to come off the Antarctic ice-shelf for around 36 hours.
Windier westerlies may finally be kicking in later this month after a delayed start (possibly due to La Nina bringing more easterlies to NZ, but also an increase in high pressure in the Southern Ocean area lately). This southern area of high pressure shifts back north over Australia and to NZ’s north mid to late October – which can limit sub-tropical rainmakers from reaching New Zealand.
AIR PRESSURE: HOW OCTOBER’S HIGHS & LOWS ARE SHAPING UP
TEMPERATURES FOR THE REST OF 2022:
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Our next ClimateWatch update will be issued on Monday November 1st!