Week 35 2025: August 25–31, 2025
Week 35 starts on Monday, August 25, 2025 and ends on Sunday, August 31, 2025.
Quick answer
Week 35 of 2025 is the seven-day ISO week from August 25, 2025 to August 31, 2025. ISO weeks always run from Monday to Sunday.
Use week 35 in professional planning
This permanent week reference can be used in project plans, payroll notes, weekly reports, production schedules and deadline documents. Share the week number together with the ISO year and exact date range to avoid ambiguity around New Year.
For calculations that span more than one week, use the weeks between dates calculator. For work schedules, compare the same range with the business days calculator or open the project timeline calculator.
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FAQ
What are the dates for week 35 of 2025?
The dates are August 25, 2025 through August 31, 2025.
What day does this week start?
It starts on Monday.
What day does this week end?
It ends on Sunday.
How should I write this week in a report?
Use “ISO week 35 of 2025 (Aug 25–Aug 31, 2025)” so the week-year and date range are both clear.