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Koulamoutou, Gabon climate

Am Tropical monsoon

Koulamoutou has a remarkably steady tropical climate (Tropical monsoon, Köppen Am). The hottest month is February with an average daily high near 85°F, while the coldest is November averaging around 70°F at night. Precipitation totals about 64 inches a year and is strongly seasonal — October alone averages 8.2 inches while July barely receives 1.51 inches.

☀️ All year

Warm

Daytime highs near 85°F most of the year.

About 24 days a year above 90 °F

🌙 Nights

Stays warm

Even the coolest nights stay near 70°F.

🌧️ Rain

Very wet

About 64 in of rain a year.

Wettest in October

⛅ Sky & trend

Often grey

Overcast skies dominate 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)

Koulamoutou climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	85	85	84	83	83	84	86	86	85	82	82	83
Avg temp (°F)	78	79	78	77	77	77	78	78	78	76	76	77
Avg low (°F)	71	72	72	72	72	70	70	71	71	70	70	71
Precipitation (in)	5.9	6.1	6.8	6.3	5.3	2.2	1.5	1.9	4.3	8.2	7.8	7.3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	85	85	84	83	83	84
Avg temp (°F)	78	79	78	77	77	77
Avg low (°F)	71	72	72	72	72	70
Precipitation (in)	5.9	6.1	6.8	6.3	5.3	2.2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	86	86	85	82	82	83
Avg temp (°F)	78	78	78	76	76	77
Avg low (°F)	70	71	71	70	70	71
Precipitation (in)	1.5	1.9	4.3	8.2	7.8	7.3

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with high ≥ 90°F (days)	1	2	2	1	0.9	2	4	5	4	0.5	0.2	0.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with high ≥ 90°F (days)	1	2	2	1	0.9	2

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with high ≥ 90°F (days)	4	5	4	0.5	0.2	0.4

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	76	80	79	81	77	68	69	74	76	82	84	80
Relative humidity (%)	84	84	87	89	89	83	78	76	80	88	90	87
Wind speed (mph)	0.3	0.3	0.3	0.3	0.3	0.3	0.2	0.2	0.2	0.3	0.3	0.3

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	76	80	79	81	77	68
Relative humidity (%)	84	84	87	89	89	83
Wind speed (mph)	0.3	0.3	0.3	0.3	0.3	0.3

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	69	74	76	82	84	80
Relative humidity (%)	78	76	80	88	90	87
Wind speed (mph)	0.2	0.2	0.2	0.3	0.3	0.3

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 →