A westerly airflow lies over the country tonight, eastern regions are likely to stay mainly dry but in the west rain or showers is likely at some point in time through the night. Showers on the West Coast of the South Island are likely to be heavy overnight with thunderstorms possible.

Auckland & Northland
Mainly cloudy with westerlies, the odd shower from this evening.
Low tonight: 10

Bay Of Plenty, Waikato & Central North Island
Areas of cloud with westerly breezes, the odd shower about the Central North Island clearing this evening. A few showers move into the Waikato this evening then clear overnight.
Lows tonight: 4-8

Eastern North Island
Mainly clear with westerly winds, a little gusty at times about Wairarapa. Some cloud clears Gisborne this evening.
Lows tonight: 6-7

Western North Island
Mainly clear with westerly winds, some cloud develops half way through the night and a shower or two could develop around dawn.
Lows tonight: 7-9

Wellington
Mainly clear skies with northerly winds, picking up a little overnight. Areas of cloud increases towards dawn.
Low tonight: 9

Nelson
Southwesterly winds ease this evening, mainly clear skies overnight.
Low tonight: 6-7

Marlborough
Mainly clear skies with westerly winds.
Lows tonight: 5-6

Canterbury
Mainly clear skies, some high cloud gradually develops. Light winds.
Low tonight: 4

West Coast
Showers, becoming heavy overnight with thunderstorms possible. Brisk westerlies develop.
Lows tonight: 6-7

Coastal Otago
Some high cloud develops this evening, around midday a gusty westerly change brings a few showers which clear around dawn.
Low tonight: 6

Southland & Central Otago
Winds change gusty westerly this evening bringing rain or showers which then ease overnight.
Low tonight: 2-5

Homepage image / Chris Johnson

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz