How Many Weeks In The Year 2025. The year 2025 has got 52 calendar weeks and starts on wednesday, january 1st. The first calendar week of 2025 starts on monday, december 30, 2024 and ends on sunday, january.
There are 53 weeks remaining until the start of this year. This is equivalent to 52 weeks and 1 extra day, since there are 365 total days in 2025.