Conceived in September 2026: when is the baby due?
If you conceived in September 2026, your baby is due between May 25, 2027 and June 23, 2027. Find your exact day in the table.
Due date for every day of September 2026
| Conceived | Due date | Most babies arrive |
|---|---|---|
| Sep 1 | May 25, 2027 | May 4 – Jun 8 |
| Sep 2 | May 26, 2027 | May 5 – Jun 9 |
| Sep 3 | May 27, 2027 | May 6 – Jun 10 |
| Sep 4 | May 28, 2027 | May 7 – Jun 11 |
| Sep 5 | May 29, 2027 | May 8 – Jun 12 |
| Sep 6 | May 30, 2027 | May 9 – Jun 13 |
| Sep 7 | May 31, 2027 | May 10 – Jun 14 |
| Sep 8 | Jun 1, 2027 | May 11 – Jun 15 |
| Sep 9 | Jun 2, 2027 | May 12 – Jun 16 |
| Sep 10 | Jun 3, 2027 | May 13 – Jun 17 |
| Sep 11 | Jun 4, 2027 | May 14 – Jun 18 |
| Sep 12 | Jun 5, 2027 | May 15 – Jun 19 |
| Sep 13 | Jun 6, 2027 | May 16 – Jun 20 |
| Sep 14 | Jun 7, 2027 | May 17 – Jun 21 |
| Sep 15 | Jun 8, 2027 | May 18 – Jun 22 |
| Sep 16 | Jun 9, 2027 | May 19 – Jun 23 |
| Sep 17 | Jun 10, 2027 | May 20 – Jun 24 |
| Sep 18 | Jun 11, 2027 | May 21 – Jun 25 |
| Sep 19 | Jun 12, 2027 | May 22 – Jun 26 |
| Sep 20 | Jun 13, 2027 | May 23 – Jun 27 |
| Sep 21 | Jun 14, 2027 | May 24 – Jun 28 |
| Sep 22 | Jun 15, 2027 | May 25 – Jun 29 |
| Sep 23 | Jun 16, 2027 | May 26 – Jun 30 |
| Sep 24 | Jun 17, 2027 | May 27 – Jul 1 |
| Sep 25 | Jun 18, 2027 | May 28 – Jul 2 |
| Sep 26 | Jun 19, 2027 | May 29 – Jul 3 |
| Sep 27 | Jun 20, 2027 | May 30 – Jul 4 |
| Sep 28 | Jun 21, 2027 | May 31 – Jul 5 |
| Sep 29 | Jun 22, 2027 | Jun 1 – Jul 6 |
| Sep 30 | Jun 23, 2027 | Jun 2 – Jul 7 |
These are estimates: conception usually happens around ovulation, and babies arrive at different times. An early ultrasound gives the most accurate dates.
Key dates for a pregnancy from the middle of September 2026
- Nuchal translucency (NT) scan window: Nov 18 – Dec 8, 2026
- Anatomy scan window: Jan 6 – Feb 9, 2027
- Third trimester begins: Mar 17, 2027
- Full term: Jun 2 – 15, 2027
About September 2026
Babies conceived in September 2026 are mostly born in summer in the northern half of the world, and in winter in the southern half.
Questions about a September 2026 conception
If I conceived in September 2026, when is my baby due?
Your due date is between May 25, 2027 and June 23, 2027, depending on the day you conceived. Find your day in the table above. A due date is about 38 weeks (266 days) after conception (ACOG).
Why is the due date about 38 weeks after conception?
Pregnancy is counted from the first day of the last period, about 2 weeks before conception. So a conception on September 16, 2026 gives a due date of June 9, 2027: 40 weeks of pregnancy, but about 38 weeks after conception (ACOG).
Will my baby be born on June 9, 2027?
Probably not on that exact day. For a conception on September 16, 2026, most babies arrive between May 19, 2027 and June 23, 2027, at 37 to 42 weeks (CDC). Your midwife or doctor will confirm your dates.