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Monthly climate in Fern Forest, Hawaii, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Fern Forest features a tropical rainforest climate (Af).Temperatures typically range between 15 °C (59 °F) and 19 °C (66 °F) through the year, but rarely can drop to 7 °C (45 °F) or can rise to as high as 25 °C (76 °F).The average annual precipitation amounts to about 2556 mm (100.6 inches) and receives 232 rainy days on the 1 mm (0.04 inches) threshold annually.Fern Forest enjoys an average of 3399 hours of sunshine throughout the year, and daylight varies from 10 hours 57 minutes to 13 hours 16 minutes per day.

Monthly average temperatures in Fern Forest, Hawaii, United States §

The warmest months in Fern Forest are July, August and September, with daily mean temperatures ranging from 18 to 19 °C (65 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 15 to 16 °C (59 - 60 °F) throughout the day. On average each year, Fern Forest experiences 0 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 Fern Forest, 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 22°C
(72°F)		 23°C
(73°F)		 22°C
(72°F)		 23°C
(73°F)		 23°C
(74°F)		 23°C
(74°F)		 24°C
(76°F)		 24°C
(76°F)		 25°C
(76°F)		 24°C
(76°F)		 23°C
(74°F)		 22°C
(72°F)
Mean maximum 21°C
(70°F)		 21°C
(71°F)		 21°C
(71°F)		 22°C
(71°F)		 23°C
(73°F)		 23°C
(73°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 23°C
(73°F)		 22°C
(71°F)
Average high 19°C
(67°F)		 19°C
(66°F)		 19°C
(67°F)		 20°C
(68°F)		 21°C
(69°F)		 21°C
(71°F)		 22°C
(72°F)		 22°C
(72°F)		 22°C
(72°F)		 22°C
(71°F)		 21°C
(69°F)		 20°C
(67°F)
Daily mean 15°C
(60°F)		 15°C
(59°F)		 16°C
(60°F)		 16°C
(62°F)		 17°C
(63°F)		 18°C
(64°F)		 18°C
(65°F)		 19°C
(66°F)		 19°C
(66°F)		 18°C
(65°F)		 17°C
(63°F)		 16°C
(61°F)
Average low 13°C
(55°F)		 12°C
(54°F)		 13°C
(55°F)		 14°C
(57°F)		 14°C
(58°F)		 15°C
(59°F)		 16°C
(60°F)		 16°C
(61°F)		 16°C
(61°F)		 15°C
(60°F)		 14°C
(58°F)		 13°C
(56°F)
Mean minimum 10°C
(50°F)		 9°C
(48°F)		 11°C
(51°F)		 12°C
(54°F)		 12°C
(54°F)		 13°C
(56°F)		 14°C
(57°F)		 14°C
(58°F)		 14°C
(57°F)		 14°C
(57°F)		 12°C
(54°F)		 11°C
(52°F)
Minimum 9°C
(49°F)		 7°C
(45°F)		 9°C
(48°F)		 11°C
(51°F)		 11°C
(51°F)		 12°C
(54°F)		 13°C
(56°F)		 14°C
(57°F)		 13°C
(56°F)		 12°C
(55°F)		 11°C
(52°F)		 9°C
(49°F)

Compare climate in Fern Forest with other places

Compare temperature, precipitation, sunshine, UV index in Fern Forest, Hawaii, United States with other places around the world.

Monthly average precipitation in Fern Forest, Hawaii, United States §

Fern Forest usually has the most precipitation in February, March and April, with an average of 23 rainy days and 368 mm (14.5 inches) of precipitation per month.The driest months in Fern Forest are June, July and September. On average, 111 mm (4.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Fern Forest, 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) 139 (5.5) 430 (16.9) 343 (13.5) 331 (13.0) 176 (6.9) 108 (4.2) 92 (3.6) 189 (7.4) 132 (5.2) 245 (9.7) 153 (6.0) 218 (8.6)
Average precipitation days (≥ 1 mm) 14 22 25 22 23 17 15 16 20 21 20 17

Monthly sunshine hours in Fern Forest, Hawaii, United States §

The sunniest months in Fern Forest are June, July and August, when the sun shines an average of 10 hours 47 minutes a day.Least sunny months in Fern Forest: January, February and March receive an average of 7 hours 44 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Fern Forest, 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 211 244 249 284 317 331 338 322 304 283 259 251
Mean daily daylight hours 11h 5m 11h 30m 12h 2m 12h 35m 13h 3m 13h 16m 13h 9m 12h 44m 12h 12m 11h 39m 11h 11m 10h 57m

Solar UV radiation in Fern Forest, Hawaii, United States §

Fern Forest experiences the highest level of ultraviolet (UV) radiation in April, July and August, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure.January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Fern Forest UV Index data.

Average daily maximum UV levels by month for Fern Forest, 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) 8 11 12 13 13 13 14 14 13 12 9 8