I did not do a lot offshore last season but I can say that inshore the water is a bit warmer this year then last .  Last year, April, May and June were cold with lots of overcast and rainy skys.  I know June was a wash out and "summer" didn't hit till the 4th of July.
The water temp in the harbor now is 64 deg already...yes it is in the harbor but we had a string of clear days with strong UV that I think helped to heat the shallow waters a lot.
That said there if you look at the WHOI data from years past you see a trend like this for the end of april 
4/27/02   T = 10.0
4/27/03   T=  7.0
4/27/04   T=7.8  Deg C
for May 24:
5/24/02 T= 12.8
5/24/03 T=10.8
5/24/04  sensor dead
So IMO, this is is a little warmer then last year but still a lot cooler then normal.  I wish the 04 data was available...
 
 
Offshore is more of a global effect...offshore currents ect.  Inshore...is sunshine driven IMO.