From what I can see comparing the January Rainfall for the last 3 years, most of our member stations have had lesser than the norm total month rainfall.

Summary here:
http://www.localweather.net.nz/smf/nzlwf-member-historical-data

The upper East is showing a very noticeable pattern of a drop in total Rainfall not only for January but for the Year also.

January stats.
2010 - 226.2
2011 - 221.7
2012 - 135.6
2013 -  90.9
2014 -  35.7
2015 -  22.5

Years Rainfall stats
2010 - 1378.4
2011 - 1388.1
2012 - 1153.7
2013 - 1130.8
2014 -  993.1

January Sunshine Hours for Wairoa 298.2