Nieuw Helvoet Threshold Days by Year

4 fixed thresholds counted per year at Nieuw Helvoet (NLE00109220): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Nieuw Helvoet Thresholds

Nieuw Helvoet: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 2024 with 34.
Nieuw Helvoet: days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 2017 with 8.
Nieuw Helvoet: days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 2017 with 2.
Nieuw Helvoet: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1998 with 1.
4 fixed thresholds have at least one qualifying day at Nieuw Helvoet.

Days with 10 mm (0.39 in) or more of precipitation

76 years with a qualifying day

Days per year at Nieuw Helvoet with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 2024.

Days with 10 mm (0.39 in) or more of precipitation per year at Nieuw Helvoet
Year	Days	Decade average
1951	24	18.4
1952	20	18.4
1953	16	18.4
1954	21	18.4
1955	12	18.4
1956	17	18.4
1957	24	18.4
1958	19	18.4
1959	13	18.4
1960	23	22.2
1961	31	22.2
1962	15	22.2
1963	17	22.2
1964	25	22.2
1965	27	22.2
1966	28	22.2
1967	19	22.2
1968	21	22.2
1969	16	22.2
1970	19	18.4
1971	14	18.4
1972	16	18.4
1973	15	18.4
1974	31	18.4
1975	20	18.4
1976	13	18.4
1977	18	18.4
1978	19	18.4
1979	19	18.4
1980	24	22.9
1981	29	22.9
1982	18	22.9
1983	24	22.9
1984	22	22.9
1985	20	22.9
1986	23	22.9
1987	22	22.9
1988	27	22.9
1989	20	22.9
1990	18	19.9
1991	12	19.9
1992	20	19.9
1993	27	19.9
1994	26	19.9
1995	17	19.9
1996	13	19.9
1997	16	19.9
1998	25	19.9
1999	25	19.9
2000	25	21.4
2001	26	21.4
2002	23	21.4
2003	18	21.4
2004	19	21.4
2005	18	21.4
2006	19	21.4
2007	29	21.4
2008	21	21.4
2009	16	21.4
2010	26	24.4
2011	26	24.4
2012	26	24.4
2013	28	24.4
2014	15	24.4
2015	25	24.4
2016	26	24.4
2017	30	24.4
2018	20	24.4
2019	22	24.4
2020	28	22.3
2021	21	22.3
2022	24	22.3
2023	31	22.3
2024	34	22.3
2025	13	22.3
2026	5	22.3

For each year, a bar from the first to the last day at Nieuw Helvoet meeting 10 mm (0.39 in).

First to last qualifying date each year at Nieuw Helvoet
Year	First date	Last date
1951	1951-01-11	1951-11-24
1952	1952-01-10	1952-12-19
1953	1953-02-10	1953-12-28
1954	1954-01-13	1954-12-23
1955	1955-01-16	1955-12-15
1956	1956-01-12	1956-10-25
1957	1957-02-11	1957-09-28
1958	1958-01-01	1958-12-09
1959	1959-01-01	1959-12-04
1960	1960-01-29	1960-12-03
1961	1961-01-06	1961-12-31
1962	1962-01-21	1962-12-20
1963	1963-03-11	1963-11-18
1964	1964-03-19	1964-12-31
1965	1965-01-09	1965-12-31
1966	1966-02-06	1966-12-29
1967	1967-02-20	1967-12-22
1968	1968-01-05	1968-12-26
1969	1969-01-22	1969-12-21
1970	1970-02-02	1970-12-04
1971	1971-02-15	1971-11-22
1972	1972-05-17	1972-11-20
1973	1973-02-12	1973-12-07
1974	1974-02-08	1974-12-12
1975	1975-01-16	1975-12-01
1976	1976-01-05	1976-12-03
1977	1977-03-27	1977-12-30
1978	1978-04-10	1978-12-27
1979	1979-02-01	1979-12-28
1980	1980-01-03	1980-12-20
1981	1981-01-02	1981-12-04
1982	1982-06-18	1982-12-19
1983	1983-01-03	1983-12-08
1984	1984-01-02	1984-11-22
1985	1985-03-30	1985-12-29
1986	1986-01-05	1986-12-29
1987	1987-03-01	1987-12-17
1988	1988-01-05	1988-12-03
1989	1989-02-27	1989-12-13
1990	1990-01-23	1990-11-19
1991	1991-06-21	1991-12-21
1992	1992-04-30	1992-12-11
1993	1993-01-06	1993-12-30
1994	1994-02-27	1994-12-27
1995	1995-01-21	1995-12-22
1996	1996-02-12	1996-12-18
1997	1997-02-04	1997-12-09
1998	1998-01-03	1998-12-15
1999	1999-01-03	1999-12-25
2000	2000-01-28	2000-12-31
2001	2001-01-04	2001-12-26
2002	2002-01-26	2002-12-29
2003	2003-01-01	2003-12-27
2004	2004-01-12	2004-12-17
2005	2005-01-17	2005-12-30
2006	2006-02-14	2006-12-08
2007	2007-01-10	2007-12-08
2008	2008-01-10	2008-12-02
2009	2009-01-22	2009-12-29
2010	2010-01-23	2010-12-16
2011	2011-01-06	2011-12-23
2012	2012-01-03	2012-12-31
2013	2013-01-29	2013-12-24
2014	2014-01-31	2014-12-26
2015	2015-01-08	2015-12-11
2016	2016-01-03	2016-11-17
2017	2017-01-09	2017-12-31
2018	2018-01-02	2018-12-20
2019	2019-01-27	2019-11-27
2020	2020-01-27	2020-12-29
2021	2021-01-01	2021-12-04
2022	2022-01-08	2022-12-30
2023	2023-01-11	2023-12-25
2024	2024-01-01	2024-12-19
2025	2025-01-01	2025-11-19
2026	2026-01-06	2026-06-19

Every Fixed Threshold

Fixed thresholds at Nieuw Helvoet
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	76	34	2024	5
25 mm (0.98 in): Days with 25 mm or more rain	68	8	2017	2
50 mm (1.97 in): Days with 50 mm or more rain	6	2	2017	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1998	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

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Data for Nieuw Helvoet threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Nieuw Helvoet Threshold Days by Year

Key Facts for Nieuw Helvoet Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

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