Ostanvik Threshold Days by Year (SWE00139564)

3 fixed thresholds counted per year at Ostanvik (SWE00139564): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ostanvik Thresholds

Ostanvik: days with 10 mm (0.39 in) or more of precipitation in 78 years, most in 2010 with 24.
Ostanvik: days with 25 mm (0.98 in) or more of precipitation in 59 years, most in 2010 with 6.
Ostanvik: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1973 with 1.
3 fixed thresholds have at least one qualifying day at Ostanvik.

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

78 years with a qualifying day

Days per year at Ostanvik with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 2010.

Days with 10 mm (0.39 in) or more of precipitation per year at Ostanvik
Year	Days	Decade average
1945	15	10.8
1946	11	10.8
1947	7	10.8
1948	10	10.8
1949	11	10.8
1950	14	13
1951	10	13
1952	9	13
1953	12	13
1954	16	13
1955	13	13
1956	14	13
1957	16	13
1958	14	13
1959	12	13
1960	14	13.6
1961	21	13.6
1962	10	13.6
1963	12	13.6
1964	12	13.6
1965	15	13.6
1966	16	13.6
1967	13	13.6
1968	10	13.6
1969	13	13.6
1970	15	14.2
1971	15	14.2
1972	6	14.2
1973	21	14.2
1974	13	14.2
1975	11	14.2
1976	14	14.2
1977	18	14.2
1978	13	14.2
1979	16	14.2
1980	18	14.9
1981	23	14.9
1982	19	14.9
1983	9	14.9
1987	13	14.9
1988	6	14.9
1989	16	14.9
1990	21	14.9
1991	16	14.9
1992	15	14.9
1993	16	14.9
1994	11	14.9
1995	13	14.9
1996	16	14.9
1997	19	14.9
1998	12	14.9
1999	10	14.9
2000	23	15.7
2001	16	15.7
2002	18	15.7
2003	12	15.7
2004	5	15.7
2005	21	15.7
2006	19	15.7
2007	5	15.7
2008	16	15.7
2009	22	15.7
2010	24	16
2011	14	16
2012	21	16
2013	13	16
2014	16	16
2015	16	16
2016	12	16
2017	17	16
2018	11	16
2019	16	16
2020	12	14
2021	18	14
2022	10	14
2023	19	14
2024	21	14
2025	4	14

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

First to last qualifying date each year at Ostanvik
Year	First date	Last date
1945	1945-01-04	1945-12-17
1946	1946-06-01	1946-11-07
1947	1947-07-05	1947-12-03
1948	1948-03-16	1948-09-05
1949	1949-05-24	1949-11-17
1950	1950-01-15	1950-12-24
1951	1951-06-04	1951-11-18
1952	1952-04-07	1952-10-28
1953	1953-01-31	1953-12-03
1954	1954-04-18	1954-12-12
1955	1955-01-30	1955-12-28
1956	1956-06-12	1956-12-19
1957	1957-02-15	1957-11-26
1958	1958-01-18	1958-12-19
1959	1959-01-10	1959-11-10
1960	1960-02-27	1960-11-05
1961	1961-02-05	1961-12-29
1962	1962-03-30	1962-12-12
1963	1963-04-15	1963-11-18
1964	1964-01-30	1964-12-13
1965	1965-01-11	1965-12-26
1966	1966-01-29	1966-12-17
1967	1967-02-23	1967-12-27
1968	1968-05-05	1968-11-03
1969	1969-04-29	1969-11-10
1970	1970-04-26	1970-11-19
1971	1971-01-31	1971-11-29
1972	1972-05-29	1972-11-21
1973	1973-02-12	1973-12-16
1974	1974-02-11	1974-11-16
1975	1975-05-16	1975-12-02
1976	1976-01-05	1976-12-03
1977	1977-01-01	1977-11-24
1978	1978-01-30	1978-09-03
1979	1979-04-25	1979-11-19
1980	1980-05-19	1980-12-31
1981	1981-01-15	1981-11-28
1982	1982-01-02	1982-11-25
1983	1983-01-13	1983-12-22
1987	1987-02-13	1987-11-19
1988	1988-04-20	1988-10-09
1989	1989-02-25	1989-12-23
1990	1990-01-26	1990-11-14
1991	1991-01-10	1991-10-01
1992	1992-02-13	1992-12-02
1993	1993-07-10	1993-12-19
1994	1994-01-05	1994-12-31
1995	1995-01-31	1995-10-05
1996	1996-04-24	1996-11-20
1997	1997-03-26	1997-12-15
1998	1998-06-07	1998-10-23
1999	1999-04-18	1999-12-09
2000	2000-02-24	2000-12-29
2001	2001-03-12	2001-10-31
2002	2002-01-22	2002-10-23
2003	2003-04-29	2003-11-01
2004	2004-01-18	2004-09-27
2005	2005-05-06	2005-12-29
2006	2006-02-06	2006-12-05
2007	2007-08-12	2007-12-01
2008	2008-04-06	2008-12-02
2009	2009-01-24	2009-11-14
2010	2010-05-04	2010-12-16
2011	2011-02-10	2011-12-09
2012	2012-01-02	2012-11-30
2013	2013-05-21	2013-12-05
2014	2014-04-17	2014-11-24
2015	2015-01-10	2015-09-24
2016	2016-01-10	2016-11-01
2017	2017-01-03	2017-12-26
2018	2018-01-23	2018-12-03
2019	2019-02-01	2019-11-26
2020	2020-03-01	2020-10-22
2021	2021-01-20	2021-11-03
2022	2022-01-29	2022-11-05
2023	2023-02-17	2023-11-09
2024	2024-02-13	2024-11-24
2025	2025-01-06	2025-04-28

Every Fixed Threshold

Fixed thresholds at Ostanvik
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	78	24	2010	4
25 mm (0.98 in): Days with 25 mm or more rain	59	6	2010	1
50 mm (1.97 in): Days with 50 mm or more rain	4	1	1973	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.

Download the Data

Data for Ostanvik 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Ostanvik Threshold Days by Year (SWE00139564)

Key Facts for Ostanvik Thresholds

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

Every Fixed Threshold

Download the Data

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