Monday the 7th and beyond:
Today is a transitional day between the big high that has brought stunning weather to many parts of New Zealand (but not all) for the past five days and a new low moving in towards us from the Tasman Sea.
The high is large and will take another 24 to 48 hours to mostly clear the country - allowing a brisk nor'east flow to develop in the upper North Island.
Monday will see a mix of sun and cloud for most areas but it will be the far north and south that are most likely to see clouds thickening and showers developing by evening - and they will become more widespread on Tuesday as the high weakens in these areas first.
Temperatures for Monday look set to be mild - especially when compared to the southerly snap we had this time last week.
Overnight lows tonight will also continue the trend upwards.

and for the rest of the week, the rain may not be widespread.
Some parts of the country are getting incredibly dry - not the usual news you hear as we head into the second week of May. However rain clouds are building thanks to a low in the Tasman Sea which has sub-tropical connections, but while heavy downpours are likely - the rain may not be widespread.
WeatherWatch.co.nz head weather analyst Philip Duncan says the sub-tropical connection will mean warmer weather for the week ahead but that the low itself isn't much of a powerhouse. "The computer guidance suggests some rain will spread across northern and western parts of the country this week but we can see significant areas that will either miss out altogether or will only have a very brief spell of rain".
Mr Duncan says while any rain will be welcome by most dairy farmers - and those who rely on rain water - it's looking unlikely to be the silver bullet to reverse the drying trend.
"Around midweek the winds will turn more westerly for the North Island and while that certainly favours rain or showers in the west it often brings dry, sunny weather to the east".
WeatherWatch.co.nz believes that westerly change will be welcome by those in the eastern North Island who have had frequent cloud, shower and south easterly events - but it may not be so welcome further south in Canterbury where farmers continue to see most rain events missing them.
However before the westerly change kicks in over the South Island, a showery southerly may bring in some rain or showers for eastern parts later in the week. We'll keep you posted as the main front moves in on Tuesday and Wednesday.
weatherwatch.co.nz

Situation across New Zealand from The Metservice
Monday
  A high over Aotearoa, New Zealand moves slowly away to the east today as a complex trough approaches from the Tasman Sea. This trough moves onto the country tomorrow.
and the rest of the week from The Metservice:
Wednesday
North Island, rain in most places at first heavy about Bay of Plenty, becoming confined to southern Wairarapa and Wellington. South Island, rain in most places.
Thursday
North Island, showery, but rain in the south. Mainly fine about Gisborne and Hawkes Bay. South Island, rain at times,persistent in the east.
Friday
Showery in most places, but rain in the east of the South Island, Wellington and Wairarapa.

metservice.com

Below Map for Tuesday/Wednesday

Great more rain for us over here!!!!!!!

{WATCH Event 2012/1.312}
SEVERE WEATHER WATCH FOR WAIRARAPA,WELLINGTON,HAWKES BAY
ISSUED BY METSERVICE AT 0855hrs 10-May-2012

RAIN AND STRONG SOUTHWESTERLIES FOR WAIRARAPA AND COASTAL HAWKES BAY

A low lying southeast of Wairarapa is directing strong
southwesterlies and rain to eastern parts of the South Island and the
lower North Island.

This low is expected to begin moving northeast Thursday evening,
bringing more persistent rain to the Wairarapa Coast tonight, which
then moves north up the Hawkes Bay coast on Friday affecting Mahia
Peninsula.
This watch is for the possibility of rain reaching warning amounts
about Wairarapa and the eastern hills of Wellington tonight and early
Friday morning, then about eastern parts of the Wairoa District and
Mahia Peninsula from late Friday morning until Friday night. At this
stage,the Wairarapa Coast looks to be the main threat area tonight,
rather than the eastern hills of Wellington, but a watch will be
maintained for this area due to uncertainties in the low's behaviour
as it moves northward.

Rain is no longer expected to reach significant amounts about the
Kaikoura Coast so the watch has been lifted for this region.

In addition, strong southwesterlies about the Wairarapa Coast are
likely to reach gale tonight and spread northward on Friday. This
watch is also for the possibility of severe gale southwesterlies
about eastern parts of the Wairoa District, especially Mahia
Peninsula from late Friday morning until Friday afternoon.