Week 31 of 2025 runs July 28, 2025 to August 3, 2025.
Week 31 starts on Monday, July 28, 2025 and ends on Sunday, August 3, 2025. It's the 209th day of the year, sits in Q3, and falls in July / August. By the end of this week, 215 of 365 days are gone, putting 2025 at 58.9%.
There are no public holidays this week, so all 5 weekdays are working days. Need a different week? Browse the full 2025 week calendar, or jump to this week's number.
Week 31 at a glance
The 7 days of week 31
Every date in week 31 of 2025, Monday through Sunday, with day-of-year numbers and events.
| Day | Date | Day no. | Type | Events |
|---|---|---|---|---|
| Monday | Day 209 | Weekday | ||
| Tuesday | Day 210 | Weekday | ||
| Wednesday | Day 211 | Weekday | ||
| Thursday | Day 212 | Weekday | ||
| Friday | Day 213 | Weekday | ||
| Saturday | Day 214 | Weekend | ||
| Sunday | Day 215 | Weekend |
What week 31 of 2025 means
ISO 8601 numbers weeks so every week starts on Monday and ends on Sunday. Week 1 is the one holding the year's first Thursday, which is why early January can land in week 52 or 53 of the previous year. Week 31 is one piece of that system.
In 2025, week 31 covers Jul 28 – Aug 3, 2025. That's July / August, deep in Q3. The same week number shifts by a day or two each year, so week 31 in 2026 won't share these exact dates. The table below shows how it moves.
Want to check a specific date instead of a week number? The week calculator converts any date to its ISO week. Curious how many weeks a year holds? The weeks in a year guide explains 52 versus 53. And the ISO week number page covers the standard end to end.
Holidays in week 31 of 2025
No major public holidays in week 31 of 2025 across the US, UK, Canada, or Australia.
Week 31 across years
The same ISO week number lands on different dates each year. Here's how week 31 shifts.
Week 31 of 2025: questions and answers
What days are in week 31 of 2025?
Week 31 of 2025 runs from July 28, 2025 (Monday) through August 3, 2025 (Sunday). It spans July / August.
What month is week 31 in 2025?
Week 31 of 2025 spans two months: it starts in July and ends in August 2025.
How many working days are in week 31 of 2025?
Week 31 of 2025 has 5 working days.
What quarter is week 31 of 2025 in?
Week 31 of 2025 is in Q3 (2025). The week starts on day 209 of 365.
What is ISO week 31?
ISO week 31 is defined by the ISO 8601 international standard. It begins on Monday, July 28, 2025, and ends on Sunday, August 3, 2025. It is week 60% through the ISO year 2025.