Today was expected to be similar with a high of 19C forecast for both Napier and Hastings.
"This will be a warm week for Hawke's Bay with temperatures averaging in the high teens through to Friday."
Mr Adams said it was not record breaking and it was usual for temperatures to reach the twenties in August.
However, last year from June 1 to August 31 Napier recorded five days of 20C or above and this was just the second time this winter.
Mr Noll said there hadn't been as many mild days due to the easterly winds coming off the sea.
"Last year there were a lot of northerly/ westerly winds, which were a big player in the warmth of last winter."
For the month of July Wairoa recorded the highest temperature in the country reaching 19.2C on July 20.
The July rainfall in Hawke's Bay was as much as just over twice as much the July average in parts of Northern Hawke's Bay, but nowhere near the levels of the near record-breaking month of April.
Figures provided by Hawke's Bay Regional Council for points mainly affecting river flows show rainfall was heaviest in Northern Hawke's Bay, hitting 399mm (58 per cent above the July average of 253mm) at Rocky Pad in Te Urewera National Park, 391mm (26 per cent above the July average of 311mm) at nearby Mt Manuoha and 381.5mm (12 per cent above the July average of 342mm) at Pukeorapa, inland from Nuhaka.
By comparison, in April Rocky Pad had 690mm (more than four-times its April average of 163mm), Mt Manuoha had 569mm (over two-and-a-half times its April average of 220mm) and Pukeorapa had 410.5mm (63 per cent above its April average).
Further south, the heaviest were below the July average rainfalls of 242.5mm at Ngahere in the Kaweka Range and 204.5mm at Moorcock in the Ruahine Range.
The weather stations featured daily in Hawke's Bay Today reported rainfall of 243mm at Mahia, which was about 100mm above the month's average, while the 100mm at Hawke's Bay Airport, 82mm in Hastings and 125mm on the Takapau Plains were all below average.
Despite these cooler temperatures and periods of wet weather according to Niwa's climate summary Napier was the fourth sunniest spot in the country with 1364 hours of sunshine recorded for the year so far.
Mr Adams said some sunshine would continue today, however rain would move in tomorrow before clearing again on Thursday.
"Wednesday is the worst day of the week with some strong northerlies in the morning and rain but that will ease in the afternoon."
Friday was looking mainly fine with a high of 17C.