Peak birth month in Portugal
Portugal: Peak birth month was 9 in 2023. ◆ Volatile
Latest (2023)
9
Change on year
unchanged
World rank
3rd
of 40 countries
All-time high
12
in 1910
All-time low
1
in 1930
Years of data
113
1901–2023
Peak birth month in Portugal, 1901–2023
Source: Human Mortality Database (2025) – processed by Our World in Data.
Analysis
Portugal recorded 9 for peak birth month in 2023.
That represents a change of unchanged over ten years.
Over the whole period, peak birth month in Portugal peaked at 12 in 1910 and was at its lowest, 1, in 1930.
Portugal ranks 3rd of 40 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Peak birth month in Portugal, year by year
| Year | Value | Change |
|---|---|---|
| 1901 | 2 | — |
| 1902 | 4 | +100.0% |
| 1903 | 2 | -50.0% |
| 1904 | 4 | +100.0% |
| 1905 | 4 | +0.0% |
| 1906 | 2 | -50.0% |
| 1907 | 4 | +100.0% |
| 1908 | 4 | +0.0% |
| 1909 | 2 | -50.0% |
| 1910 | 12 | +500.0% |
| 1918 | 3 | -75.0% |
| 1919 | 12 | +300.0% |
| 1920 | 2 | -83.3% |
| 1921 | 2 | +0.0% |
| 1922 | 2 | +0.0% |
| 1923 | 2 | +0.0% |
| 1924 | 3 | +50.0% |
| 1925 | 2 | -33.3% |
| 1929 | 2 | +0.0% |
| 1930 | 1 | -50.0% |
| 1931 | 3 | +200.0% |
| 1932 | 3 | +0.0% |
| 1933 | 3 | +0.0% |
| 1934 | 3 | +0.0% |
| 1935 | 3 | +0.0% |
| 1936 | 3 | +0.0% |
| 1937 | 3 | +0.0% |
| 1938 | 3 | +0.0% |
| 1939 | 1 | -66.7% |
| 1940 | 2 | +100.0% |
| 1941 | 4 | +100.0% |
| 1942 | 3 | -25.0% |
| 1943 | 2 | -33.3% |
| 1944 | 1 | -50.0% |
| 1945 | 1 | +0.0% |
| 1946 | 1 | +0.0% |
| 1947 | 1 | +0.0% |
| 1948 | 3 | +200.0% |
| 1949 | 1 | -66.7% |
| 1950 | 1 | +0.0% |
| 1951 | 1 | +0.0% |
| 1952 | 3 | +200.0% |
| 1953 | 1 | -66.7% |
| 1954 | 1 | +0.0% |
| 1955 | 1 | +0.0% |
| 1956 | 3 | +200.0% |
| 1957 | 4 | +33.3% |
| 1958 | 3 | -25.0% |
| 1959 | 3 | +0.0% |
| 1960 | 3 | +0.0% |
| 1961 | 3 | +0.0% |
| 1962 | 2 | -33.3% |
| 1963 | 3 | +50.0% |
| 1964 | 3 | +0.0% |
| 1965 | 3 | +0.0% |
| 1966 | 3 | +0.0% |
| 1967 | 3 | +0.0% |
| 1968 | 9 | +200.0% |
| 1969 | 9 | +0.0% |
| 1970 | 9 | +0.0% |
| 1971 | 9 | +0.0% |
| 1972 | 9 | +0.0% |
| 1973 | 1 | -88.9% |
| 1974 | 9 | +800.0% |
| 1975 | 9 | +0.0% |
| 1976 | 9 | +0.0% |
| 1977 | 5 | -44.4% |
| 1978 | 5 | +0.0% |
| 1979 | 5 | +0.0% |
| 1980 | 5 | +0.0% |
| 1981 | 5 | +0.0% |
| 1982 | 5 | +0.0% |
| 1983 | 5 | +0.0% |
| 1984 | 5 | +0.0% |
| 1985 | 5 | +0.0% |
| 1986 | 5 | +0.0% |
| 1987 | 6 | +20.0% |
| 1988 | 9 | +50.0% |
| 1989 | 5 | -44.4% |
| 1990 | 5 | +0.0% |
| 1991 | 9 | +80.0% |
| 1992 | 9 | +0.0% |
| 1993 | 7 | -22.2% |
| 1994 | 5 | -28.6% |
| 1995 | 5 | +0.0% |
| 1996 | 9 | +80.0% |
| 1997 | 5 | -44.4% |
| 1998 | 9 | +80.0% |
| 1999 | 9 | +0.0% |
| 2000 | 9 | +0.0% |
| 2001 | 5 | -44.4% |
| 2002 | 9 | +80.0% |
| 2003 | 9 | +0.0% |
| 2004 | 9 | +0.0% |
| 2005 | 9 | +0.0% |
| 2006 | 9 | +0.0% |
| 2007 | 9 | +0.0% |
| 2008 | 9 | +0.0% |
| 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 | 11 | +22.2% |
| 2018 | 9 | -18.2% |
| 2019 | 9 | +0.0% |
| 2020 | 9 | +0.0% |
| 2021 | 9 | +0.0% |
| 2022 | 9 | +0.0% |
| 2023 | 9 | +0.0% |
Portugal compared with similar countries
- Portugal's 9 is above the median for high income countries, which is 7, 1.3× the median. (38 countries reporting)
- Portugal's 9 is above the median for Europe & Central Asia, which is 7, 1.3× the median. (31 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1900s | 3.11 | 2 | 4 | 9 |
| 1910s | 9 | 3 | 12 | 3 |
| 1920s | 2.14 | 2 | 3 | 7 |
| 1930s | 2.6 | 1 | 3 | 10 |
| 1940s | 1.9 | 1 | 4 | 10 |
| 1950s | 2.1 | 1 | 4 | 10 |
| 1960s | 4.1 | 2 | 9 | 10 |
| 1970s | 7 | 1 | 9 | 10 |
| 1980s | 5.5 | 5 | 9 | 10 |
| 1990s | 7.2 | 5 | 9 | 10 |
| 2000s | 8.6 | 5 | 9 | 10 |
| 2010s | 9.2 | 9 | 11 | 10 |
| 2020s | 9 | 9 | 9 | 4 |
Countries ranked near Portugal
More population data for Portugal
- Un population 2024 vs 2022, annual growth rate -0.4941 % change on previous year (2100)
- Population long run with projections, annual growth rate -0.0538 % change on previous year (2100)
- Urban and rural population 2050, annual growth rate -4.39 % change on previous year (2050)
- Population regions with projections, annual growth rate -0.0538 % change on previous year (2100)
- Population growth rate, by level of development -0.0% (2100)
- Number of children under 5, by world region 396,215 people (2100)
- Population density 95.56 people per km² (2100)
- World population growth -0.0% (2100)
- Projected population under age 5, annual growth rate 0.0558 % change on previous year (2100)
- Africa's Development Dynamics (AfDD) Table 03 - Annual population -0.2816 Percent per annum (2030)
Frequently asked questions
- What is peak birth month in Portugal?
- Peak birth month in Portugal was 9 in 2023, according to Human Mortality Database (2025) – processed by Our World in Data.
- What is the highest peak birth month recorded in Portugal?
- The highest recorded value was 12 in 1910.
- What is the lowest peak birth month recorded in Portugal?
- The lowest recorded value was 1 in 1930.
- How does Portugal rank for peak birth month?
- Portugal ranks 3rd out of 40 countries with data for 2023.
- Is peak birth month rising or falling in Portugal?
- Over the last ten years it is unchanged. The long-run trend across the full record is volatile.
- Where does this Portugal 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 — 113 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.