Week numbers 2026
All ISO week numbers in 2026, with Monday-to-Sunday date ranges.
| Week | Starts Monday | Ends Sunday |
|---|---|---|
| Week 2 | Jan 5 | Jan 11, 2026 |
| Week 7 | Feb 9 | Feb 15, 2026 |
| Week 32 | Aug 3 | Aug 9, 2026 |
| Week 37 | Sep 7 | Sep 13, 2026 |
| Week 38 | Sep 14 | Sep 20, 2026 |
| Week 39 | Sep 21 | Sep 27, 2026 |
| Week 40 | Sep 28 | Oct 4, 2026 |
| Week 41 | Oct 5 | Oct 11, 2026 |
| Week 42 | Oct 12 | Oct 18, 2026 |
| Week 43 | Oct 19 | Oct 25, 2026 |
| Week 44 | Oct 26 | Nov 1, 2026 |
| Week 45 | Nov 2 | Nov 8, 2026 |
| Week 46 | Nov 9 | Nov 15, 2026 |
| Week 47 | Nov 16 | Nov 22, 2026 |
| Week 48 | Nov 23 | Nov 29, 2026 |
| Week 49 | Nov 30 | Dec 6, 2026 |
| Week 50 | Dec 7 | Dec 13, 2026 |
| Week 51 | Dec 14 | Dec 20, 2026 |
| Week 52 | Dec 21 | Dec 27, 2026 |
| Week 53 | Dec 28 | Jan 3, 2027 |