Peak birth month in Japan
Japan: Peak birth month was 8 in 2023. ◆ Volatile
Latest (2023)
8
Change on year
down 11.1%
World rank
14th
of 40 countries
All-time high
12
in 1966
All-time low
1
in 1899
Years of data
125
1899–2023
Peak birth month in Japan, 1899–2023
Source: Human Mortality Database (2025) – processed by Our World in Data.
Analysis
In 2023, peak birth month in Japan stood at 8.
Compared with earlier readings it is down 11.1% on the previous year and down 11.1% over ten years.
Over the whole period, peak birth month in Japan peaked at 12 in 1966 and was at its lowest, 1, in 1899.
That places Japan 14th out of 40 countries with data for 2023, putting it in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Peak birth month in Japan, year by year
| Year | Value | Change |
|---|---|---|
| 1899 | 1 | — |
| 1900 | 2 | +100.0% |
| 1901 | 1 | -50.0% |
| 1902 | 1 | +0.0% |
| 1903 | 1 | +0.0% |
| 1904 | 1 | +0.0% |
| 1905 | 3 | +200.0% |
| 1906 | 3 | +0.0% |
| 1907 | 3 | +0.0% |
| 1908 | 3 | +0.0% |
| 1909 | 3 | +0.0% |
| 1910 | 3 | +0.0% |
| 1911 | 3 | +0.0% |
| 1912 | 3 | +0.0% |
| 1913 | 3 | +0.0% |
| 1914 | 3 | +0.0% |
| 1915 | 1 | -66.7% |
| 1916 | 3 | +200.0% |
| 1917 | 3 | +0.0% |
| 1918 | 3 | +0.0% |
| 1919 | 3 | +0.0% |
| 1920 | 3 | +0.0% |
| 1921 | 3 | +0.0% |
| 1922 | 1 | -66.7% |
| 1923 | 3 | +200.0% |
| 1924 | 1 | -66.7% |
| 1925 | 1 | +0.0% |
| 1926 | 3 | +200.0% |
| 1927 | 1 | -66.7% |
| 1928 | 3 | +200.0% |
| 1929 | 1 | -66.7% |
| 1930 | 1 | +0.0% |
| 1931 | 1 | +0.0% |
| 1932 | 3 | +200.0% |
| 1933 | 1 | -66.7% |
| 1934 | 1 | +0.0% |
| 1935 | 1 | +0.0% |
| 1936 | 1 | +0.0% |
| 1937 | 1 | +0.0% |
| 1938 | 1 | +0.0% |
| 1939 | 1 | +0.0% |
| 1940 | 1 | +0.0% |
| 1941 | 1 | +0.0% |
| 1942 | 1 | +0.0% |
| 1943 | 1 | +0.0% |
| 1944 | 1 | +0.0% |
| 1945 | 2 | +100.0% |
| 1946 | 9 | +350.0% |
| 1947 | 1 | -88.9% |
| 1948 | 1 | +0.0% |
| 1949 | 1 | +0.0% |
| 1950 | 1 | +0.0% |
| 1951 | 1 | +0.0% |
| 1952 | 1 | +0.0% |
| 1953 | 1 | +0.0% |
| 1954 | 1 | +0.0% |
| 1955 | 1 | +0.0% |
| 1956 | 1 | +0.0% |
| 1957 | 1 | +0.0% |
| 1958 | 1 | +0.0% |
| 1959 | 1 | +0.0% |
| 1960 | 1 | +0.0% |
| 1961 | 1 | +0.0% |
| 1962 | 1 | +0.0% |
| 1963 | 1 | +0.0% |
| 1964 | 1 | +0.0% |
| 1965 | 2 | +100.0% |
| 1966 | 12 | +500.0% |
| 1967 | 1 | -91.7% |
| 1968 | 4 | +300.0% |
| 1969 | 1 | -75.0% |
| 1970 | 1 | +0.0% |
| 1971 | 7 | +600.0% |
| 1972 | 8 | +14.3% |
| 1973 | 2 | -75.0% |
| 1974 | 7 | +250.0% |
| 1975 | 2 | -71.4% |
| 1976 | 7 | +250.0% |
| 1977 | 7 | +0.0% |
| 1978 | 7 | +0.0% |
| 1979 | 8 | +14.3% |
| 1980 | 9 | +12.5% |
| 1981 | 9 | +0.0% |
| 1982 | 8 | -11.1% |
| 1983 | 7 | -12.5% |
| 1984 | 8 | +14.3% |
| 1985 | 7 | -12.5% |
| 1986 | 7 | +0.0% |
| 1987 | 7 | +0.0% |
| 1988 | 9 | +28.6% |
| 1989 | 8 | -11.1% |
| 1990 | 7 | -12.5% |
| 1991 | 7 | +0.0% |
| 1992 | 9 | +28.6% |
| 1993 | 7 | -22.2% |
| 1994 | 7 | +0.0% |
| 1995 | 7 | +0.0% |
| 1996 | 7 | +0.0% |
| 1997 | 7 | +0.0% |
| 1998 | 9 | +28.6% |
| 1999 | 7 | -22.2% |
| 2000 | 9 | +28.6% |
| 2001 | 9 | +0.0% |
| 2002 | 9 | +0.0% |
| 2003 | 7 | -22.2% |
| 2004 | 9 | +28.6% |
| 2005 | 9 | +0.0% |
| 2006 | 9 | +0.0% |
| 2007 | 10 | +11.1% |
| 2008 | 9 | -10.0% |
| 2009 | 9 | +0.0% |
| 2010 | 9 | +0.0% |
| 2011 | 9 | +0.0% |
| 2012 | 9 | +0.0% |
| 2013 | 9 | +0.0% |
| 2014 | 9 | +0.0% |
| 2015 | 9 | +0.0% |
| 2016 | 9 | +0.0% |
| 2017 | 9 | +0.0% |
| 2018 | 8 | -11.1% |
| 2019 | 9 | +12.5% |
| 2020 | 9 | +0.0% |
| 2021 | 9 | +0.0% |
| 2022 | 9 | +0.0% |
| 2023 | 8 | -11.1% |
Japan compared with similar countries
- Japan's 8 is above the median for East Asia & Pacific, which is 8, 1.0× the median. (5 countries reporting)
- Japan's 8 is above the median for high income countries, which is 7, 1.1× the median. (38 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1890s | 1 | 1 | 1 | 1 |
| 1900s | 2.1 | 1 | 3 | 10 |
| 1910s | 2.8 | 1 | 3 | 10 |
| 1920s | 2 | 1 | 3 | 10 |
| 1930s | 1.2 | 1 | 3 | 10 |
| 1940s | 1.9 | 1 | 9 | 10 |
| 1950s | 1 | 1 | 1 | 10 |
| 1960s | 2.5 | 1 | 12 | 10 |
| 1970s | 5.6 | 1 | 8 | 10 |
| 1980s | 7.9 | 7 | 9 | 10 |
| 1990s | 7.4 | 7 | 9 | 10 |
| 2000s | 8.9 | 7 | 10 | 10 |
| 2010s | 8.9 | 8 | 9 | 10 |
| 2020s | 8.75 | 8 | 9 | 4 |
Countries ranked near Japan
More population data for Japan
- Un population 2024 vs 2022, annual growth rate -0.5507 % change on previous year (2100)
- Population long run with projections, annual growth rate -0.4984 % change on previous year (2100)
- Urban and rural population 2050, annual growth rate -5.09 % change on previous year (2050)
- Population regions with projections, annual growth rate -0.4984 % change on previous year (2100)
- Population growth rate, by level of development -0.5% (2100)
- Number of children under 5, by world region 2.83 million people (2100)
- Population density 210.83 people per km² (2100)
- World population growth -0.5% (2100)
- Projected population under age 5, annual growth rate -0.2372 % change on previous year (2100)
- Africa's Development Dynamics (AfDD) Table 03 - Annual population -0.5891 Percent per annum (2030)
Frequently asked questions
- What is peak birth month in Japan?
- Peak birth month in Japan was 8 in 2023, according to Human Mortality Database (2025) – processed by Our World in Data.
- What is the highest peak birth month recorded in Japan?
- The highest recorded value was 12 in 1966.
- What is the lowest peak birth month recorded in Japan?
- The lowest recorded value was 1 in 1899.
- How does Japan rank for peak birth month?
- Japan ranks 14th out of 40 countries with data for 2023.
- Is peak birth month rising or falling in Japan?
- Over the last ten years it is down 11.1%. The long-run trend across the full record is volatile.
- Where does this Japan data come from?
- The figures come from Human Mortality Database (2025) – processed by Our World in Data, published as part of Peak birth month. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 125 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Number corresponding to the month with the highest daily birth rate.