Week 38 of the year
When is week 38? The exact Monday–Sunday dates of ISO week 38 for every year from 2024 to 2032.
Week 38 of 2026 runs from Monday, Sep 14, 2026 to Sunday, Sep 20, 2026 (September). Week 38 of 2026 is 9 weeks away. ISO week code: 2026-W38.
Week 38 dates by year
| Year | Week 38 starts (Mon) | Week 38 ends (Sun) | Month |
|---|---|---|---|
| 2024 | Monday, September 16, 2024 | Sunday, September 22, 2024 | September |
| 2025 | Monday, September 15, 2025 | Sunday, September 21, 2025 | September |
| 2026 | Monday, September 14, 2026 | Sunday, September 20, 2026 | September |
| 2027 | Monday, September 20, 2027 | Sunday, September 26, 2027 | September |
| 2028 | Monday, September 18, 2028 | Sunday, September 24, 2028 | September |
| 2029 | Monday, September 17, 2029 | Sunday, September 23, 2029 | September |
| 2030 | Monday, September 16, 2030 | Sunday, September 22, 2030 | September |
| 2031 | Monday, September 15, 2031 | Sunday, September 21, 2031 | September |
| 2032 | Monday, September 13, 2032 | Sunday, September 19, 2032 | September |
All weeks
Frequently asked questions
What month is week 38 in?
Week 38 typically falls in September. The exact dates shift by up to a few days from year to year because week 1 is anchored to January 4, not January 1.
How do I write week 38 as a week code?
The ISO code is the year plus W38 — for example 2026-W38, short form 26W38, or YYWW date code 2638. See week number formats.
Are these dates the same in every country?
Yes for ISO 8601 (Monday-start) numbering, which is what this table shows. US Sunday-start calendars can label the same days with a number one higher — see week start conventions.