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Monthly climate in Kapa'a, Hawaii, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Kapa'a features a tropical savanna climate (As).Temperatures typically range between 22 °C (71 °F) and 25 °C (78 °F) through the year, but rarely can drop to 16 °C (62 °F) or can rise to as high as 28 °C (83 °F).The average annual precipitation amounts to about 1067 mm (42.0 inches) and receives 244 rainy days on the 1 mm (0.04 inches) threshold annually.Kapa'a enjoys an average of 3550 hours of sunshine throughout the year, and daylight varies from 10 hours 48 minutes to 13 hours 26 minutes per day.

Monthly average temperatures in Kapa'a, Hawaii, United States §

The warmest months in Kapa'a are July, August and September, with daily mean temperatures ranging from 25 to 25 °C (77 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 22 to 22 °C (71 - 73 °F) throughout the day. On average each year, Kapa'a experiences 156 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Kapa'a, Hawaii, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 25°C
(78°F)		 26°C
(78°F)		 25°C
(78°F)		 26°C
(78°F)		 27°C
(81°F)		 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 28°C
(83°F)		 28°C
(82°F)		 27°C
(81°F)		 26°C
(79°F)
Mean maximum 25°C
(77°F)		 24°C
(76°F)		 25°C
(76°F)		 25°C
(77°F)		 26°C
(79°F)		 26°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(82°F)		 27°C
(81°F)		 27°C
(80°F)		 25°C
(78°F)
Average high 24°C
(75°F)		 23°C
(74°F)		 23°C
(74°F)		 24°C
(75°F)		 25°C
(77°F)		 26°C
(78°F)		 26°C
(79°F)		 27°C
(80°F)		 27°C
(80°F)		 26°C
(79°F)		 25°C
(78°F)		 24°C
(76°F)
Daily mean 22°C
(73°F)		 22°C
(71°F)		 22°C
(72°F)		 23°C
(73°F)		 23°C
(74°F)		 24°C
(76°F)		 25°C
(77°F)		 25°C
(78°F)		 25°C
(78°F)		 25°C
(77°F)		 24°C
(76°F)		 23°C
(74°F)
Average low 21°C
(71°F)		 21°C
(69°F)		 21°C
(70°F)		 22°C
(71°F)		 22°C
(73°F)		 23°C
(75°F)		 24°C
(75°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(75°F)		 23°C
(74°F)		 22°C
(72°F)
Mean minimum 20°C
(69°F)		 18°C
(65°F)		 19°C
(67°F)		 20°C
(68°F)		 20°C
(69°F)		 22°C
(73°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(73°F)		 22°C
(72°F)		 20°C
(69°F)
Minimum 19°C
(67°F)		 16°C
(62°F)		 18°C
(65°F)		 19°C
(67°F)		 19°C
(67°F)		 21°C
(71°F)		 22°C
(73°F)		 22°C
(73°F)		 23°C
(73°F)		 22°C
(71°F)		 21°C
(69°F)		 19°C
(66°F)

Compare climate in Kapa'a with other places

Compare temperature, precipitation, sunshine, UV index in Kapa'a, Hawaii, United States with other places around the world.

Monthly average precipitation in Kapa'a, Hawaii, United States §

Kapa'a usually has the most precipitation in March, October and December, with an average of 21 rainy days and 126 mm (5.0 inches) of precipitation per month.The driest months in Kapa'a are January, May and September. On average, 62 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kapa'a, Hawaii, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 60 (2.3) 94 (3.7) 156 (6.1) 80 (3.2) 63 (2.5) 92 (3.6) 80 (3.2) 80 (3.2) 65 (2.5) 95 (3.7) 76 (3.0) 127 (5.0)
Average precipitation days (≥ 1 mm) 11 17 21 20 21 20 26 23 21 22 21 21

Monthly sunshine hours in Kapa'a, Hawaii, United States §

The sunniest months in Kapa'a are May, July and August, when the sun shines an average of 10 hours 58 minutes a day.Least sunny months in Kapa'a: January, February and December receive an average of 7 hours 59 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kapa'a, Hawaii, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 215 255 282 304 335 334 349 336 314 297 267 255
Mean daily daylight hours 10h 56m 11h 25m 12h 2m 12h 40m 13h 11m 13h 26m 13h 18m 12h 50m 12h 13m 11h 36m 11h 3m 10h 48m

Solar UV radiation in Kapa'a, Hawaii, United States §

Kapa'a experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 13 - 13, which corresponds to the Extreme category of sun exposure.January, November and December are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Kapa'a UV Index data.

Average daily maximum UV levels by month for Kapa'a, Hawaii, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 7 10 11 11 13 12 13 13 12 10 8 7