Month numbers follow the standard Gregorian calendar order, starting with January as 1 and ending with December as 12.
September has 30 days and falls in UK meteorological autumn.
Months of the year
What Month Is September?
September is month 9 in the calendar year.
Direct answer
September is month 9 of the year.
Generated using Europe/London time. Dynamic date and time answers may differ in other time zones.
How this is calculated
Quick reference
- Month number
- 9
- Typical UK season
- autumn
Frequently asked questions
What number month is September?
September is month 9.
How many days are in September?
September has 30 days.
Do all countries use the same month order?
Most countries use the Gregorian calendar for civil dates, but date formatting and local calendars can vary.
Can I add months to a date?
Yes. Use the Date Add / Subtract Calculator for month-based date arithmetic.