There's no doubt that Taranaki has the most consistant quality wind/wave combo in NZ. No doubt at all. You can kite 270 Deg wind again within a 1hr drive.
But April is not the best time of the year. The best time of the year is oct-dec for guaranteed wind/waves in the naki.
That said there will be wind and their will be waves in April. If you come to NZ in April be prepared to travel. . March sees the end of summer seabreezes and westerly flow.
In April wind can come from any direction. It is frontal driven wind. Some tropical storms sweep in from the north East making north of Auckland on the east coast good. We can also get rippers of SE winds which opens up south Taranaki for some monster wind and swell.
Lets face it. NZ is pretty small. Driving from New Plymouth to Auckland takes 5 hours. Its pretty easy to hunt the wind.
I'll get some grief for the re-post. But here's some naki waves.