September 25most common birthdayindex 107.7, 100 is an average day
December 26least common, leap day asideindex 71.8
Septemberbusiest month per dayindex 105.0; December quietest at 96.8
83%weekend levelSaturday and Sunday against a weekday, per day, 2006–2025
Across the 20 complete years 2006–2025 in the Office for National Statistics daily series, 13,331,133 recorded births, the most common birthday in England and Wales is September 25, at 107.7 where 100 is an average day, and the least common date that occurs every year is December 26, at 71.8. September is the busiest month per day and Thursday the busiest weekday; a Saturday or Sunday records about 83% of a weekday’s births. Every figure on this page comes from this one national series.
All 366 dates, most to least common
All 366 dates from most to least common, England & Wales, 2006–2025
Births per occurrence for every calendar date in England and Wales, sorted from the busiest to the quietest, coloured by the six rarity tiers applied to this country’s own values.
Very common 91Common 92Uncommon 147Rare 18Very rare 15Super rare 3September 9, the most common date in the United States, is marked where it stands in England & Wales.
England & Wales, every date of the year: births per occurrence, index (100 = average day), 2006–2025
Every calendar date in order as one line, births per occurrence indexed to the average day, with the busiest and quietest dates marked.
The deepest dips are fixed public holidays; the broad rise and fall across the year is the season.
Ten most common birthdays in England & Wales, 2006–2025
February 29 occurred in 5 of these 20 years (2008, 2012, 2016, 2020, 2024); measured per occurrence it ranks #233 of 366 at index 98.9. Each date links to its U.S. page, which shows this country’s matched-window rank for it.
The calendar, date by date
Every date in its rarity tier for England & Wales, the six colours of the reveal applied to this country’s own per-occurrence values, with its rank of 366 in the corner.
Births per day by month in England & Wales, 2006–2025
Twelve months as births per observed day, with the busiest and quietest labelled.
September leads at index 105.0; December is quietest at 96.8.
Months in England & Wales by births per day, 2006–2025
Month
Births per day
Index (100 = average day)
January
1,784
97.7
February
1,799
98.6
March
1,785
97.8
April
1,781
97.6
May
1,824
100.0
June
1,843
101.0
July
1,870
102.4
August
1,839
100.8
September
1,915
105.0
October
1,865
102.2
November
1,826
100.1
December
1,766
96.8
Births per day by weekday in England & Wales, 2006–2025
Monday to Sunday as births per observed day, with the busiest and quietest labelled.
Thursday leads; Sunday is quietest. The weekday is taken from the calendar date of each row.
Weekdays in England & Wales by births per day, 2006–2025
Weekday
Births per day
Index (100 = average day)
Monday
1,852
101.5
Tuesday
1,914
104.9
Wednesday
1,927
105.6
Thursday
1,957
107.2
Friday
1,937
106.2
Saturday
1,620
88.8
Sunday
1,568
85.9
The weekend gap, year by year
Saturday and Sunday births per day as a percentage of Monday-to-Friday births per day in the same year: 84% in 2006 and 78% in 2025. A change in this line is a change in when births are recorded across the week.
Weekend births as a percentage of weekday births, England & Wales, 2006–2025
Saturday and Sunday births per day against Monday-to-Friday births per day in the same year, one point per year.
Each year against its own weekday level.
Births by year in England & Wales, 2006–2025, with the weekend level
Year
Recorded births
Weekend births per day, % of weekday
2006
669,601
84.3%
2007
690,013
84.5%
2008
708,711
84.6%
2009
706,248
84.0%
2010
723,165
84.9%
2011
723,913
85.0%
2012
729,674
84.5%
2013
698,512
84.5%
2014
695,233
84.4%
2015
697,852
84.3%
2016
696,271
84.0%
2017
679,106
84.1%
2018
657,076
83.8%
2019
640,370
83.4%
2020
613,936
82.8%
2021
624,828
81.2%
2022
605,479
79.8%
2023
591,072
79.2%
2024
594,677
79.0%
2025
585,396
78.0%
Year by year
Each complete year of the series on its own page, with the weekday each date fell on:
Source: Office for National Statistics, ONS daily live births by date of occurrence, Table 12 of the births release of September 8, 2026, Open Government Licence v3.0; retrieved September 10, 2026; births occurring in England and Wales, including to mothers resident elsewhere. 11,323 daily rows, of which the 20 most recent complete years (2006–2025, 7,305 days, 13,331,133 births) are ranked here. The file also holds 1995–2005; the ranking uses the most recent twenty complete years so that the answer describes the recent calendar, the same rule for every country hub.
Ranks compare births per occurrence, so February 29 is judged on the years it occurred in. Equal values share a rank. The six tier colours apply the reveal’s rule to this country’s own values; they are a reading aid.
Every figure above comes from the administrative records named here, at the granularity those records publish: a day, a month or a year. Coverage and definitions differ between countries and eras, so two sources are combined only where their documentation states the windows are separate, and the page where that happens says so.
