Annual mean 19°C · wettest around April · prevailing wind SE
Warmest
25.6 °C
Coldest
19.7 °C
Wettest
85%
Windiest
3.5 m/s
Prevailing
SE
2.7 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Isiolo over the whole year is 19°C. February is the hottest month, with highs of about 25°C; July is the coldest, with lows of about 14°C. The rainy (wet) season in Isiolo runs from October to May, peaking in April with a 71% chance of rain on a given day. The dry season is June to September; July is the driest month, at 22%. Winds in Isiolo are highest in August, averaging 2.1 m/s (8 km/h), and lightest in April, at 1.5 m/s (5 km/h). The prevailing wind is from the SE. The clearest skies in Isiolo come in February, when the sky is typically 40% covered; July is the cloudiest month, at 72%.
Month by month Isiolo climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
24°C
15°C
24°C
59%
44%
1.7 m/s
85
40
38
February
25°C
16°C
24°C
54%
40%
1.8 m/s
82
50
32
March
25°C
16°C
25°C
60%
49%
1.7 m/s
76
56
25
April
24°C
17°C
24°C
71%
67%
1.5 m/s
81
43
32
May
22°C
16°C
23°C
60%
66%
1.7 m/s
86
24
51
June
21°C
15°C
21°C
37%
66%
1.8 m/s
88
6
72
July
20°C
14°C
19°C
22%
72%
2.0 m/s
87
3
80
August
21°C
14°C
19°C
32%
68%
2.1 m/s
86
5
78
September
22°C
15°C
21°C
36%
61%
2.1 m/s
87
15
64
October
24°C
16°C
23°C
60%
63%
1.9 m/s
85
34
43
November
23°C
16°C
23°C
71%
68%
1.5 m/s
82
27
42
December
24°C
16°C
23°C
66%
53%
1.5 m/s
83
33
41
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Isiolo weather by season
Year round, Isiolo has days of about 20°C at their warmest in July, its coolest month, and 25°C in February, its warmest; the coolest hours of the day run from 14°C to 17°C through the year, and the average temperature over the year is 19°C around the clock. Rain is most likely around April and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Isiolo weather in winterDecember to February
High 24°CLow 16°CRain 60%
Winter in Isiolo has typical daily highs of about 24°C and lows of about 16°C, with a 60% chance of rain on a given day.
Isiolo weather in springMarch to May
High 24°CLow 17°CRain 64%
Spring in Isiolo has typical daily highs of about 24°C and lows of about 17°C, with a 64% chance of rain on a given day.
Isiolo weather in summerJune to August
High 20°CLow 15°CRain 30%
Summer in Isiolo has typical daily highs of about 20°C and lows of about 15°C, with a 30% chance of rain on a given day.
Isiolo weather in autumnSeptember to November
High 23°CLow 16°CRain 56%
Autumn in Isiolo has typical daily highs of about 23°C and lows of about 16°C, with a 56% chance of rain on a given day.
When is the rainy season in Isiolo?
The rainy (wet) season in Isiolo runs from October to May, peaking in April with a 71% chance of rain on a given day. The dry season is June to September; July is the driest month, at 22%.
What time of year is Isiolo windiest?
Winds in Isiolo are highest in August, averaging 2.1 m/s (8 km/h), and lightest in April, at 1.5 m/s (5 km/h). The prevailing wind is from the SE.
What is the average temperature in Isiolo year round?
The average temperature in Isiolo over the whole year is 19°C. February is the hottest month, with highs of about 25°C; July is the coldest, with lows of about 14°C.