A low pressure system moves out of the Tasman Sea tomorrow onto Central New Zealand in the afternoon, this low swings a front over the North Island during the day with heavy falls possible. The South Island is a little calmer due to a weak ridge of high pressure although a southerly airflow does build a little later in the day.
So it’s a mainly cloudy day for much of the North Island tomorrow, showers turning to rain in the west for most by mid to late morning. This rain as is mentioned on the graphic provided will be heavy at times, even a chance of a thunderstorm in the afternoon for Northland and Auckland. Rain eases for most in the evening as gusty northerlies change westerly. Rain may start a little later (afternoon) for the Bay Of Plenty and ease a little later (overnight).
Showers then rain from afternoon about the lower North Island, chance of the odd heavy fall here also although not looking to make as much of an impact as further north. Hawkes Bay and Gisborne will see thick high cloud, some rain spreading at times from the west and breezy northerly winds.
Thick high cloud about much of the upper South Island tomorrow, areas of rain or showers affect Nelson and Marlborough, especially the further north you go in these regions. A mix of sun and cloud for the rest of the South Island with light winds, from afternoon a few showers may affect Southland and perhaps Otago later in the evening.
Also watch for early clearing showers about South Westland.
Not all regions and towns have been mentioned above. For specific 10 day information for your city, town, rural community or island please see the 1000 forecasts on our homepage!
– Aaron Wilkinson, WeatherWatch.co.nz