Week 33 of 2025
August 11 – August 17, 2025
| Monday | August 11, 2025 | Mon · week starts |
| Tuesday | August 12, 2025 | |
| Wednesday | August 13, 2025 | |
| Thursday | August 14, 2025 | |
| Friday | August 15, 2025 | |
| Saturday | August 16, 2025 | |
| Sunday | August 17, 2025 | Sun · week ends |
All weeks of 2025
2025 is an ISO year with 52 weeks.
About ISO week 33 of 2025
ISO 8601 weeks start on Monday and end on Sunday. Week 33 of 2025 begins on Monday, August 11, 2025 and ends on Sunday, August 17, 2025. Week numbering follows the international standard: week 1 of a year is the week containing the first Thursday of January, which is why some calendar dates near January 1st belong to the previous or next ISO year.
The ISO week system is the standard for business reporting across Europe and much of the world. The US convention differs: weeks start on Sunday and week 1 contains January 1st, so US week numbers can be one ahead of or behind ISO numbers near year boundaries.
Frequently asked questions
What dates are in week 33 of 2025?
Week 33 of 2025 spans August 11 – August 17, 2025: Monday August 11 through Sunday August 17.
When is week 33 of 2025?
Week 33 of 2025 started 442 days ago, on Monday, August 11, 2025.
Why does 2025 have 52 weeks?
2025 has the usual 52 ISO weeks. Only years starting on a Thursday (or a Wednesday in a leap year) get a 53rd week.