A foggy morning awaits those who will be waking up early for Anzac Day dawn services across the country tomorrow.

MetService meteorologist April Clark said Wellington and Christchurch will have low-lying cloud early tomorrow, while those marking the day in Gisborne, Hawke's Bay or Dunedin may be in for some showers at dawn.

Clark said the showers will eventually clear later in the day.

Meanwhile a ridge sitting over the central North Island together will bring showers to the east coast, but a fine day is in store for the rest of the island.

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"Those showers around Gisborne are going to spread south into Wairarapa and Hawke's Bay by the afternoon," Clark said.

"It's generally quite fine for the North Island, apart from a few areas."

In the South Island, a front over Otago and Southland will bring scattered showers for most of today.

"It may ease up a little bit [but] in general it's cloudy with a few showers for down south," Clark said.

"For the rest of the South Island we have very low cloud or fog on the east coast, so Christchurch has fog and we're expecting that to last until midday.

"In Banks Peninsula [fog] might just stick around all day, so they're going to have a cloudy sort of day. Elsewhere in the South island it's going to be pretty fine."

Clark said there was a possibility of low stratus cloud in Wellington near the airport, something that MetService would keep an eye on.

Tomorrow's forecast was not great for those on the east coast of the North Island.

"Places like Gisborne and Hawke's Bay will probably be showery, so that'll probably be the worst place.

"Places like Dunedin could have the odd spot of precipitation. There'll be patchy drizzle for dawn services but that should be breaking up during the day."

Anzac Day forecast
Auckland

Fine day with light southerlies. High 20C, low 10C

Hamilton

Fine with light winds. High 21C, low 6C

Wellington

Patchy drizzle, mainly about the south coast, clearing to a fine day by afternoon. Southerlies dying out at night. High 17C, low 9C

Christchurch

Morning low cloud or fog, clearing to long sunny spells in the afternoon, but returning at night. Northeasterlies. High 16C, low 6C

Dunedin

Morning cloud and drizzle. Clearing to long sunny spells in the afternoon, but cloud returns at night. Northeasterlies. High 16C, low 10C