Showers are expected throughout Northland this week but will not be as heavy as those that thundered across the region on Sunday evening.

Rainfall figures from the Northland Regional Council showed Glenbervie Forest topped the list of rain that fell throughout the region in 24 hours from midday Sunday to 12pm yesterday.

Glenbervie Forest received 24.5mm of rain over that 24-hour period as well as the highest per hour recorded in any area at 16mm which fell between 5pm and 6pm on Sunday.

Whakapara received 22.5mm, Whangarei Harbour at Marsden Pt 22mm, Twin Bridges at Mangakahia 19.5mm, Maungaturoto 19mm, Touwai 18mm, Ohaeawai 17.5mm, and Water St in central Whangarei 17mm.

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Other areas throughout the region received less than 15mm.

WeatherWatch head analyst Philip Duncan said Northland would be mainly dry until Friday evening but it may not be overly sunny.

"Northland is calmer than usual at this time of the year because of a high pressure system north of the country which encourages westerlies and which helps keep Northland settled than other parts of the country," Mr Duncan said.

He said wind direction will change from northerlies to westerlies tomorrow before the northerlies developed on Friday with possible rain that night because of a low in the Tasman Sea.

On sea conditions, he said the west coast of Northland should expect swells of up to 3m and the east coast 1.5m on Thursday.

Day time temperatures in Northland this week will hover between 18deg C and 20C and overnight lows of between 9C and 10C.

Meanwhile, above average temperatures are predicted for Northland by the National Institute for Water and Atmospheric Research (Niwa) for October, November, and December.

According to Niwa's seasonal climate summary for those months, rainfall is likely to be above or near normal while soil moisture levels and river flows are likely to be near or above normal.