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Ouesso, Republic of the Congo climate

Ouesso has a remarkably steady tropical climate. The hottest month is March with an average daily high near 33°C, while the coldest is July averaging around 20°C at night. Precipitation is fairly even year-round, totalling about 624 mm.

☀️ Summers

Hot

Highs near 33°C in March.

About 77 days a year above 32 °C

❄️ Winters

Mild

Lows near 20°C in July.

🌧️ Rain

Moderate rainfall

About 624 mm of rain a year.

Wettest in September

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

+1.2 °C vs 50 years ago

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)

Ouesso climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	33	33	33	33	32	31	30	31	31	32	32	32
Avg temp (°C)	27	27	27	27	27	26	25	26	26	26	26	26
Avg low (°C)	19	20	22	21	21	21	20	21	20	20	20	20
Precipitation (mm)	—	—	—	—	—	—	—	285	339	—	—	—

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	33	33	33	33	32	31
Avg temp (°C)	27	27	27	27	27	26
Avg low (°C)	19	20	22	21	21	21
Precipitation (mm)	—	—	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	30	31	31	32	32	32
Avg temp (°C)	25	26	26	26	26	26
Avg low (°C)	20	21	20	20	20	20
Precipitation (mm)	—	285	339	—	—	—

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	1	2	4	5	5	5	4	5	6	7	6	2
Days with high ≥ 32°C (days)	7	10	10	10	9	5	2	3	5	6	5	5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	1	2	4	5	5	5
Days with high ≥ 32°C (days)	7	10	10	10	9	5

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	4	5	6	7	6	2
Days with high ≥ 32°C (days)	2	3	5	6	5	5

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	64	71	72	73	70	70	70	76	76	78	74	66
Relative humidity (%)	74	74	79	83	83	82	81	82	86	88	86	82
Wind speed (m/s)	0.2	0.1	0.1	0.1	0.2	0.2	0.2	0.2	0.2	0.2	0.2	0.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	64	71	72	73	70	70
Relative humidity (%)	74	74	79	83	83	82
Wind speed (m/s)	0.2	0.1	0.1	0.1	0.2	0.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	70	76	76	78	74	66
Relative humidity (%)	81	82	86	88	86	82
Wind speed (m/s)	0.2	0.2	0.2	0.2	0.2	0.2

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 6 years of daily observations at Ouesso, a weather station, inside the city. The underlying daily records come from NOAA's global station network.

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 →