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Monthly climate in Harper, Liberia

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Harper features a tropical monsoon climate (Am).Temperatures typically range between 25 °C (77 °F) and 27 °C (81 °F) through the year, but rarely can drop to 21 °C (70 °F) or can rise to as high as 31 °C (88 °F).The average annual precipitation amounts to about 2527 mm (99.5 inches) and receives 319 rainy days on the 1 mm (0.04 inches) threshold annually.Harper enjoys an average of 3491 hours of sunshine throughout the year, and daylight varies from 11 hours 51 minutes to 12 hours 21 minutes per day.

Monthly average temperatures in Harper, Liberia §

The warmest months in Harper are February, March and April, with daily mean temperatures ranging from 27 to 27 °C (80 - 81 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 25 to 25 °C (77 - 78 °F) throughout the day. On average each year, Harper experiences 328 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 Harper, Liberia.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 31°C
(88°F)		 31°C
(88°F)		 31°C
(88°F)		 31°C
(88°F)		 31°C
(88°F)		 29°C
(85°F)		 28°C
(83°F)		 28°C
(83°F)		 30°C
(86°F)		 29°C
(85°F)		 30°C
(87°F)		 31°C
(87°F)
Mean maximum 30°C
(87°F)		 30°C
(87°F)		 31°C
(87°F)		 31°C
(87°F)		 30°C
(87°F)		 29°C
(84°F)		 28°C
(83°F)		 28°C
(82°F)		 29°C
(84°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(86°F)
Average high 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(85°F)		 29°C
(84°F)		 28°C
(82°F)		 27°C
(80°F)		 27°C
(80°F)		 27°C
(81°F)		 28°C
(82°F)		 29°C
(84°F)		 29°C
(84°F)
Daily mean 26°C
(80°F)		 27°C
(81°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(80°F)		 26°C
(79°F)		 25°C
(78°F)		 25°C
(77°F)		 25°C
(78°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(80°F)
Average low 25°C
(76°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 25°C
(77°F)		 24°C
(76°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(76°F)
Mean minimum 23°C
(74°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 24°C
(75°F)		 23°C
(73°F)		 22°C
(72°F)		 23°C
(74°F)		 23°C
(74°F)		 24°C
(75°F)		 24°C
(75°F)
Minimum 22°C
(72°F)		 24°C
(75°F)		 23°C
(73°F)		 24°C
(75°F)		 23°C
(74°F)		 23°C
(74°F)		 22°C
(73°F)		 21°C
(70°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(73°F)

Compare climate in Harper with other places

Compare temperature, precipitation, sunshine, UV index in Harper, Liberia with other places around the world.

Monthly average precipitation in Harper, Liberia §

Harper usually has the most precipitation in May, June and September, with an average of 28 rainy days and 368 mm (14.5 inches) of precipitation per month.The driest months in Harper are January, February and December. On average, 109 mm (4.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Harper, Liberia.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) 92 (3.6) 111 (4.4) 162 (6.4) 170 (6.7) 300 (11.8) 447 (17.6) 189 (7.4) 140 (5.5) 358 (14.1) 260 (10.2) 173 (6.8) 126 (5.0)
Average precipitation days (≥ 1 mm) 22 24 27 27 29 28 25 23 29 30 28 27

Monthly sunshine hours in Harper, Liberia §

The sunniest months in Harper are March, November and December, when the sun shines an average of 10 hours 2 minutes a day.Least sunny months in Harper: January, June and September receive an average of 8 hours 44 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Harper, Liberia.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 256 278 304 302 295 261 296 294 277 303 305 314
Mean daily daylight hours 11h 53m 11h 58m 12h 4m 12h 12m 12h 18m 12h 21m 12h 19m 12h 14m 12h 7m 12h 0m 11h 54m 11h 51m

Solar UV radiation in Harper, Liberia §

Harper experiences the highest level of ultraviolet (UV) radiation in April, May and September, when the maximum UV index can reach values of 12 - 15, which corresponds to the Extreme category of sun exposure.January, June and July are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly Harper UV Index data.

Average daily maximum UV levels by month for Harper, Liberia.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) 11 12 12 15 13 11 11 12 12 12 11 11