Week 31 2026: July 27–2, 2026
Week 31 starts on Monday, July 27, 2026 and ends on Sunday, August 2, 2026.
Quick answer
Week 31 of 2026 is the seven-day ISO week from July 27, 2026 to August 2, 2026. ISO weeks always run from Monday to Sunday.
Use week 31 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.
Weeks around week 31
Browse priority week calendars
Continue with a planning tool
FAQ
What are the dates for week 31 of 2026?
The dates are July 27, 2026 through August 2, 2026.
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 31 of 2026 (Jul 27–Aug 2, 2026)” so the week-year and date range are both clear.