The seasons are supposed to be according to the solar calendar, not the lunar cycle on which the Jewish is based.
But it really doesn't surprise me, because I like to think that since our G-d made the world and gave us the Torah, Judaism, He also arranged the sun, moon and our calendar to coincide.
The Jewish Calendar is a brilliant invention that combines the lunar and solar cycles. This year we'll have an added month to keep our holidays in the correct seasons. The Muslim Calendar only goes according to the lunar cycle, and since there are fewer days in the twelve month lunar calendar, their holidays travel around from season to season. Lunar months make more sense as months than the secular solar 28-31 days months. I like the idea that I can see what part of the month we're in according to the shape of the moon.
|Phases of the moon|