Hana 354 Threshold Days by Year

8 fixed thresholds counted per year at Hana 354 (USC00511122): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hana 354 Thresholds

Hana 354: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1918 with 64.
Hana 354: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 1918 with 26.
Hana 354: days with a maximum temperature at or above 30 C (86 F) in 41 years, most in 1940 with 65.
Hana 354: nights with a minimum temperature at or above 20 C (68 F) in 41 years, most in 1908 with 298.
8 fixed thresholds have at least one qualifying day at Hana 354.

Days at or above 30 C (86 F)

41 years with a qualifying day

Days per year at Hana 354 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 65 in 1940.

Days at or above 30 C (86 F) per year at Hana 354
Year	Days	Decade average
1908	8	10.5
1909	13	10.5
1910	11	14.6
1911	23	14.6
1913	13	14.6
1914	6	14.6
1915	25	14.6
1917	22	14.6
1918	2	14.6
1920	1	17.3
1921	1	17.3
1922	11	17.3
1923	13	17.3
1924	15	17.3
1925	13	17.3
1926	48	17.3
1927	18	17.3
1928	4	17.3
1929	49	17.3
1930	5	18.9
1931	5	18.9
1932	19	18.9
1933	15	18.9
1934	27	18.9
1935	18	18.9
1936	16	18.9
1937	28	18.9
1938	32	18.9
1939	24	18.9
1940	65	23.4
1941	30	23.4
1942	30	23.4
1943	31	23.4
1944	12	23.4
1945	15	23.4
1948	3	23.4
1949	1	23.4
1950	15	15.5
1951	26	15.5
1952	13	15.5
1953	8	15.5

For each year, a bar from the first to the last day at Hana 354 meeting 30 C (86 F).

First to last qualifying date each year at Hana 354
Year	First date	Last date
1908	1908-02-11	1908-08-22
1909	1909-08-07	1909-11-22
1910	1910-08-25	1910-11-09
1911	1911-02-21	1911-11-07
1913	1913-06-24	1913-12-19
1914	1914-01-01	1914-12-29
1915	1915-03-01	1915-12-07
1917	1917-08-17	1917-10-08
1918	1918-02-06	1918-09-06
1920	1920-09-19	1920-09-19
1921	1921-10-13	1921-10-13
1922	1922-08-09	1922-10-14
1923	1923-01-23	1923-10-19
1924	1924-09-09	1924-12-22
1925	1925-09-28	1925-11-01
1926	1926-02-02	1926-12-06
1927	1927-09-05	1927-11-17
1928	1928-10-29	1928-11-30
1929	1929-08-26	1929-12-09
1930	1930-09-12	1930-11-04
1931	1931-10-14	1931-11-14
1932	1932-09-21	1932-12-12
1933	1933-08-29	1933-11-18
1934	1934-07-17	1934-12-18
1935	1935-01-31	1935-12-29
1936	1936-01-03	1936-11-02
1937	1937-06-24	1937-12-21
1938	1938-01-10	1938-12-06
1939	1939-02-04	1939-12-26
1940	1940-01-03	1940-12-22
1941	1941-01-03	1941-11-02
1942	1942-09-22	1942-12-20
1943	1943-05-17	1943-11-28
1944	1944-01-15	1944-10-11
1945	1945-01-29	1945-12-29
1948	1948-09-06	1948-09-26
1949	1949-11-01	1949-11-01
1950	1950-08-16	1950-10-29
1951	1951-07-22	1951-10-30
1952	1952-08-21	1952-10-16
1953	1953-09-14	1953-10-16

Every Fixed Threshold

Fixed thresholds at Hana 354
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	41	65	1940	8
90 F (32.2 C): Days	2	2	1926	1
20 C (68 F): Tropical nights (min	41	298	1908	146
10 mm (0.39 in): Days with 10 mm or more rain	42	64	1918	46
25 mm (0.98 in): Days with 25 mm or more rain	42	26	1918	18
50 mm (1.97 in): Days with 50 mm or more rain	39	13	1918	3
100 mm (3.94 in): Days with 100 mm or more rain	19	5	1948	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1965	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

Download the Data

Data for Hana 354 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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

Hana 354 Threshold Days by Year

Key Facts for Hana 354 Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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