"Having watched Jason in training every day, I really believe he hasn't hit his peak yet,'' explained Martinez.
"There are 10 games left and I'm convinced Jason can take his game to an even higher level.
"For any striker to score 20 goals at Championship level is an outstanding achievement and shouldn't be underestimated.
"He thoroughly deserves the award and all the lads in the squad are really pleased for him.''
Scotland's fine goal-scoring form continued in February, netting three goals in four games to help the Swans remain unbeaten.
He began the month by scoring twice in the home win over Ipswich Town. He followed this by getting on the scoresheet in the Swans' home win over Doncaster.
Also short-listed for the February award were Dele Adebola of Bristol City, Paul Heffernan of Doncaster Rovers and Watford's Tamas Priskin.
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