The twin cities are in for a fine and sunny day today, as winter's mild and dry weather pattern continues.

Both Hastings and Napier are expected to reach highs in the early 20s, while southern Hawke's Bay is also expected to boast blue skies and a high of 14C.

Earlier this week, Hawke's Bay Regional Council's climate and air principal scientist Dr Kathleen Kozyniak said she felt like "a broken record" when reporting that the month of May was "dry and warm".

"That's now four consecutive months all following the same theme," she said. "May featured more in the way of unsettled weather than previous months but the storminess was very westerly in nature, meaning any rainfall coming our way was captured by the ranges, and eastern areas were left with only the odd sprinkle."

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Dr Kozyniak said the shortfall in rain was compounded by high levels of evaporation for the time of year due to the heat in that westerly wind. "The result is rather low soil moisture levels for May, around the Heretaunga Plains particularly, and lower than usual river and ground water levels. Of course, there is always a silver lining to our non-existent rain clouds and that is we were on fire, so to speak, in terms of keeping air quality on a clean slate."

Temperatures in Hastings and Napier tomorrow are expected to drop to the late teens. MetService predicted high cloud, a southerly change and possible late showers for both cities. Showers were forecast to develop in Dannevirke tomorrow, with a high of 15C.