Perinthalamanna Threshold Days by Year (IN010061500)

5 fixed thresholds counted per year at Perinthalamanna (IN010061500): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Perinthalamanna Thresholds

Perinthalamanna: days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 1943 with 105.
Perinthalamanna: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1961 with 73.
Perinthalamanna: days with 50 mm (1.97 in) or more of precipitation in 64 years, most in 1961 with 42.
Perinthalamanna: days with 100 mm (3.94 in) or more of precipitation in 51 years, most in 1924 with 10.
5 fixed thresholds have at least one qualifying day at Perinthalamanna.

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

64 years with a qualifying day

Days per year at Perinthalamanna with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 105 in 1943.

Days with 10 mm (0.39 in) or more of precipitation per year at Perinthalamanna
Year	Days	Decade average
1901	84	73.4
1902	76	73.4
1903	74	73.4
1904	82	73.4
1905	67	73.4
1906	58	73.4
1907	84	73.4
1908	65	73.4
1909	71	73.4
1910	68	74.6
1911	56	74.6
1912	83	74.6
1913	67	74.6
1914	86	74.6
1915	77	74.6
1916	83	74.6
1917	69	74.6
1918	65	74.6
1919	92	74.6
1920	96	81.8
1923	79	81.8
1924	89	81.8
1925	78	81.8
1926	69	81.8
1927	82	81.8
1928	64	81.8
1929	97	81.8
1930	78	79.4
1931	80	79.4
1932	93	79.4
1933	104	79.4
1934	60	79.4
1935	82	79.4
1936	86	79.4
1937	80	79.4
1938	59	79.4
1939	72	79.4
1940	77	75.8
1941	73	75.8
1942	72	75.8
1943	105	75.8
1944	78	75.8
1945	60	75.8
1946	81	75.8
1947	75	75.8
1948	76	75.8
1949	61	75.8
1950	84	73.9
1951	72	73.9
1952	65	73.9
1953	59	73.9
1954	70	73.9
1955	68	73.9
1956	75	73.9
1957	79	73.9
1958	68	73.9
1959	99	73.9
1960	94	78
1961	102	78
1963	75	78
1965	77	78
1966	45	78
1967	70	78
1968	83	78

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

First to last qualifying date each year at Perinthalamanna
Year	First date	Last date
1901	1901-01-11	1901-12-12
1902	1902-03-15	1902-12-16
1903	1903-04-01	1903-11-11
1904	1904-04-29	1904-11-12
1905	1905-04-20	1905-11-26
1906	1906-01-18	1906-12-20
1907	1907-04-12	1907-11-11
1908	1908-02-24	1908-11-07
1909	1909-01-02	1909-12-12
1910	1910-01-31	1910-11-18
1911	1911-03-06	1911-12-07
1912	1912-04-19	1912-11-26
1913	1913-05-04	1913-12-03
1914	1914-05-02	1914-12-14
1915	1915-01-19	1915-11-28
1916	1916-04-01	1916-11-29
1917	1917-02-01	1917-12-12
1918	1918-04-04	1918-12-04
1919	1919-04-22	1919-11-12
1920	1920-04-16	1920-11-24
1923	1923-01-12	1923-11-07
1924	1924-03-22	1924-12-03
1925	1925-03-15	1925-12-12
1926	1926-02-02	1926-11-01
1927	1927-02-28	1927-11-10
1928	1928-02-03	1928-12-01
1929	1929-03-27	1929-11-16
1930	1930-04-01	1930-12-01
1931	1931-03-08	1931-12-16
1932	1932-04-13	1932-11-20
1933	1933-04-09	1933-12-25
1934	1934-01-10	1934-11-07
1935	1935-04-02	1935-11-17
1936	1936-03-23	1936-12-10
1937	1937-03-17	1937-11-20
1938	1938-04-04	1938-11-07
1939	1939-04-07	1939-11-18
1940	1940-04-09	1940-12-12
1941	1941-04-10	1941-12-04
1942	1942-04-26	1942-12-10
1943	1943-01-04	1943-11-24
1944	1944-03-03	1944-12-08
1945	1945-04-01	1945-11-16
1946	1946-03-27	1946-12-16
1947	1947-03-04	1947-12-24
1948	1948-01-24	1948-11-22
1949	1949-04-06	1949-11-19
1950	1950-02-20	1950-11-16
1951	1951-04-11	1951-11-24
1952	1952-02-23	1952-12-13
1953	1953-04-03	1953-11-15
1954	1954-03-23	1954-11-05
1955	1955-04-08	1955-11-07
1956	1956-03-14	1956-11-23
1957	1957-04-23	1957-11-23
1958	1958-02-05	1958-11-30
1959	1959-04-05	1959-12-01
1960	1960-03-05	1960-11-25
1961	1961-04-27	1961-11-08
1963	1963-02-24	1963-12-08
1965	1965-03-13	1965-12-10
1966	1966-03-13	1966-12-07
1967	1967-04-08	1967-12-10
1968	1968-03-15	1968-11-05

Every Fixed Threshold

Fixed thresholds at Perinthalamanna
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	64	105	1943	83
25 mm (0.98 in): Days with 25 mm or more rain	64	73	1961	48
50 mm (1.97 in): Days with 50 mm or more rain	64	42	1961	18
100 mm (3.94 in): Days with 100 mm or more rain	51	10	1924	2
200 mm (7.87 in): Days with 200 mm or more rain	3	2	1924	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

Data for Perinthalamanna 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).

Perinthalamanna Threshold Days by Year (IN010061500)

Key Facts for Perinthalamanna Thresholds

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

Every Fixed Threshold

Download the Data

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