Yambio, South Sudan climate

As Tropical savanna (dry summer)

Yambio has a remarkably steady tropical climate (Tropical savanna (dry summer), Köppen As). The hottest month is February with an average daily high near 36°C, while the coldest is August averaging around 20°C at night. Precipitation totals about 1435 mm a year and is strongly seasonal — October alone averages 216 mm while January barely receives 13 mm.

☀️ All year

Very hot

Daytime highs near 36°C most of the year.

About 98 days a year above 32 °C

🌙 Nights

Stays warm

Even the coolest nights stay near 20°C.

🌧️ Rain

Wet

About 1435 mm of rain a year.

Wettest in October

⛅ 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)

Yambio climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	34	36	34	30	29	28	28	28	28	28	30	32
Avg temp (°C)	26	28	28	26	25	24	24	24	24	24	25	26
Avg low (°C)	19	20	21	21	21	20	20	20	20	20	20	19
Precipitation (mm)	13	21	89	169	172	137	145	170	176	216	106	19

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	34	36	34	30	29	28
Avg temp (°C)	26	28	28	26	25	24
Avg low (°C)	19	20	21	21	21	20
Precipitation (mm)	13	21	89	169	172	137

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	28	28	28	28	30	32
Avg temp (°C)	24	24	24	24	25	26
Avg low (°C)	20	20	20	20	20	19
Precipitation (mm)	145	170	176	216	106	19

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with high ≥ 32°C (days)	21	23	21	6	2	0.9	2	0.1	0.9	0.9	4	16

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with high ≥ 32°C (days)	21	23	21	6	2	0.9

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with high ≥ 32°C (days)	2	0.1	0.9	0.9	4	16

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	63	64	74	78	73	74	79	77	74	77	66	54
Relative humidity (%)	50	49	64	78	82	82	82	83	82	83	77	63
Wind speed (m/s)	2.2	2.2	1.9	1.6	1.5	1.5	1.4	1.3	1.3	1.2	1.5	1.9

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	63	64	74	78	73	74
Relative humidity (%)	50	49	64	78	82	82
Wind speed (m/s)	2.2	2.2	1.9	1.6	1.5	1.5

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	79	77	74	77	66	54
Relative humidity (%)	82	83	82	83	77	63
Wind speed (m/s)	1.4	1.3	1.3	1.2	1.5	1.9

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 →