According to the NOAA, December 2015 ranked wettest out of 121 (121 is wettest).
I came across a calendar tool for [R] (the language I do the programming in) in the package openAir.
With a lot of kludging (the package was designed to visualize air pollution data) I can visualize the Anomaly % for the year 2015. By anomaly % I mean if the mean is 10,000,000 sq km for 1981-2010 and the anomaly is -500,000 then the anomaly % is -5%.
Darkest red days are closest to the mean. Light colors are far below the mean.
UPDATE: The original version of this post had the y axis going from -1 to 1. I’ll leave those graphs at the bottom.
The new graphs have -3 to 3. Notice how much the NoPol Ocean temperatures fluctuate compared to the other 3 regions.
UAH for December 2015 is out.
Here is the South and North Pole Ocean Data plus the Southern and Northern Extent Ocean Data
Original graphs: