Isiolo, Kenya climate

Csb Warm-summer Mediterranean

Isiolo has a remarkably steady warm-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is March with an average daily high near 79°F, while the coldest is July averaging around 55°F at night. Precipitation totals about 50 inches a year and is strongly seasonal — November alone averages 12.8 inches while August barely receives 0.57 inches.

☀️ Summers

Warm

Highs near 79°F in March.

❄️ Winters

Mild

Lows near 55°F in July.

🌧️ Rain

Wet

About 50 in of rain a year.

Wettest in November

⛅ Sky & trend

Fairly sunny

More sun than cloud through 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)

Isiolo climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	76	79	79	76	74	72	70	72	76	77	74	74
Avg temp (°F)	65	66	68	67	66	64	63	63	66	67	66	64
Avg low (°F)	53	54	56	58	58	56	55	55	55	58	57	55
Precipitation (in)	3.2	1.2	3.3	8.5	4.6	0.6	0.6	0.6	1.4	7.9	12.8	5.7

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	76	79	79	76	74	72
Avg temp (°F)	65	66	68	67	66	64
Avg low (°F)	53	54	56	58	58	56
Precipitation (in)	3.2	1.2	3.3	8.5	4.6	0.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	70	72	76	77	74	74
Avg temp (°F)	63	63	66	67	66	64
Avg low (°F)	55	55	55	58	57	55
Precipitation (in)	0.6	0.6	1.4	7.9	12.8	5.7

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	40	37	48	60	45	43	48	42	33	53	60	47
Relative humidity (%)	72	66	70	78	79	75	73	71	67	71	82	80
Wind speed (mph)	4.6	4.9	5.7	6.3	6.8	5.9	6.1	6.8	7.6	7.4	6.0	4.9

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	40	37	48	60	45	43
Relative humidity (%)	72	66	70	78	79	75
Wind speed (mph)	4.6	4.9	5.7	6.3	6.8	5.9

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	48	42	33	53	60	47
Relative humidity (%)	73	71	67	71	82	80
Wind speed (mph)	6.1	6.8	7.6	7.4	6.0	4.9

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Meru, a weather station, about 31 km from the city centre. 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 →