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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 26°C, while the coldest is July averaging around 13°C at night. Precipitation totals about 1280 mm a year and is strongly seasonal — November alone averages 324 mm while August barely receives 15 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours 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 (°C) | 25 | 26 | 26 | 25 | 23 | 22 | 21 | 22 | 24 | 25 | 23 | 23 |
| Avg temp (°C) | 18 | 19 | 20 | 20 | 19 | 18 | 17 | 17 | 19 | 20 | 19 | 18 |
| Avg low (°C) | 12 | 12 | 14 | 15 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 13 |
| Precipitation (mm) | 81 | 31 | 83 | 215 | 117 | 16 | 16 | 15 | 34 | 202 | 324 | 145 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 26 | 26 | 25 | 23 | 22 |
| Avg temp (°C) | 18 | 19 | 20 | 20 | 19 | 18 |
| Avg low (°C) | 12 | 12 | 14 | 15 | 14 | 13 |
| Precipitation (mm) | 81 | 31 | 83 | 215 | 117 | 16 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 22 | 24 | 25 | 23 | 23 |
| Avg temp (°C) | 17 | 17 | 19 | 20 | 19 | 18 |
| Avg low (°C) | 13 | 13 | 13 | 14 | 14 | 13 |
| Precipitation (mm) | 16 | 15 | 34 | 202 | 324 | 145 |
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 (km/h) | 7.4 | 8.0 | 9.1 | 10.2 | 10.9 | 9.4 | 9.8 | 10.9 | 12.2 | 11.8 | 9.6 | 7.9 |
| 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 (km/h) | 7.4 | 8.0 | 9.1 | 10.2 | 10.9 | 9.4 |
| 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 (km/h) | 9.8 | 10.9 | 12.2 | 11.8 | 9.6 | 7.9 |
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.