Voinjama, Liberia climate

Am Tropical monsoon

Voinjama has a remarkably steady tropical climate (Tropical monsoon, Köppen Am). The hottest month is March with an average daily high near 32°C, while the coldest is August averaging around 20°C at night. Precipitation totals about 2360 mm a year and is strongly seasonal — September alone averages 376 mm while January barely receives 18 mm.

☀️ All year

Hot

Daytime highs near 32°C most of the year.

About 58 days a year above 32 °C

🌙 Nights

Stays warm

Even the coolest nights stay near 20°C.

🌧️ Rain

Very wet

About 2360 mm of rain a year.

Wettest in September

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Voinjama climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	32	32	31	30	28	27	26	27	28	29	29
Avg temp (°C)	24	25	27	26	26	25	24	23	24	24	24	23
Avg low (°C)	17	19	21	22	22	21	20	20	20	21	20	17
Precipitation (mm)	18	40	108	161	241	291	339	360	376	280	124	22

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	30	32	32	31	30	28
Avg temp (°C)	24	25	27	26	26	25
Avg low (°C)	17	19	21	22	22	21
Precipitation (mm)	18	40	108	161	241	291

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	27	26	27	28	29	29
Avg temp (°C)	24	23	24	24	24	23
Avg low (°C)	20	20	20	21	20	17
Precipitation (mm)	339	360	376	280	124	22

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with high ≥ 32°C (days)	7	11	14	7	4	2	0.1	—	0.5	2	4	6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with high ≥ 32°C (days)	7	11	14	7	4	2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with high ≥ 32°C (days)	0.1	—	0.5	2	4	6

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	32	43	61	73	78	77	83	86	83	76	59	36
Relative humidity (%)	59	62	71	78	84	86	89	91	89	86	80	68
Wind speed (m/s)	0.8	0.7	0.7	0.7	0.7	0.7	1.0	1.0	0.8	0.6	0.6	0.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	32	43	61	73	78	77
Relative humidity (%)	59	62	71	78	84	86
Wind speed (m/s)	0.8	0.7	0.7	0.7	0.7	0.7

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	83	86	83	76	59	36
Relative humidity (%)	89	91	89	86	80	68
Wind speed (m/s)	1.0	1.0	0.8	0.6	0.6	0.7

Methodology & sources

Temperature & precipitation — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →