Yes, it does rain on the West Coast, but not as much as you might think! Other places in New Zealand are a lot wetter - they're just better at hiding it! For example, in 2004 Hokitika got 1,964 hours of sunshine and Greymouth 1,980; both a good measure ahead of Auckland's 1,825 hours.
A few more tips that you may not know about are:
Read about our Fire-sky sunsets and West Coast weather on our West Coast NZ blog.
Summer: (Dec - Feb) 12-25°
Autumn: (March - May) 9-17°
Winter: (June - August) 5-15°
Spring: (Sept - Nov) 9-17°
Check out full West Coast weather forecasts from the Metservice:
View webcams for Punakaiki, Greymouth and Hokitika.