Isiolo in Fall
In fall (September, October and November), Isiolo sees average daytime highs around 25°C and overnight lows near 16°C, with 179 mm of rain over about 36 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Across fall, daytime highs hold fairly steady around 25°C. The sky is clear or mostly clear about 38% of the time across fall, and the air most often feels dry.
Fall is Isiolo's weakest season of the year to visit on our travel score. For the whole year in context, see Isiolo's year-round climate.
- Avg daytime high
- 25°C
- 3rd-warmest season
- Avg overnight low
- 16°C
- Rainfall
- 179 mm
- 36 wet days
- Avg wind
- 8 km/h
- Travel score
- 6.6
- weakest season of the year
- Months
- Sep · Oct · Nov
Temperature in Isiolo in Fall
Across fall, daytime highs hold fairly steady around 25°C.
A typical fall day in Isiolo reaches about 25°C and drops to 16°C overnight. The warmest of the three months is September, the coolest September.
Isiolo weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 26° / 15° | 41 | 8.2 | 12 | 7.3 |
| Feb | 27° / 15° | 23 | 4.9 | 12 | 7.4 |
| Mar | 27° / 16° | 43 | 8.6 | 12 | 6.9 |
| Apr | 27° / 17° | 76 | 11.3 | 12 | 6.4 |
| May | 26° / 17° | 47 | 7.5 | 12 | 7.2 |
| Jun | 25° / 16° | 28 | 5.6 | 12 | 7.5 |
| Jul | 24° / 15° | 38 | 7.8 | 12 | 7.3 |
| Aug | 25° / 15° | 40 | 9.1 | 12 | 7.1 |
| Sep | 26° / 16° | 27 | 5.7 | 12 | 7.6 |
| Oct | 26° / 16° | 53 | 10 | 12 | 6.8 |
| Nov | 24° / 16° | 99 | 19.8 | 12 | 5.5 |
| Dec | 25° / 15° | 55 | 13.3 | 12 | 6.6 |
Cloud cover in Fall
The sky is clear or mostly clear about 38% of the time across fall.
Chance of precipitation in Fall
Isiolo gets around 179 mm of rain over 36 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 8 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 hours in early September to 12 hours by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 6.1 kWh/m².
Is fall a good time to visit Isiolo?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Isiolo for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Isiolo in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Isiolo sees daytime highs around 25°C and nights near 16°C. Pack rain gear and sun protection. Worth having: light clothes. About 36 days see rain.
UV index in Isiolo in Fall
Clear-sky midday UV across fall averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Isiolo peaks around March 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 11 (extreme).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 15 | 16 | 15 | 12 | 10 | 11 | 12 | 13 | 14 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 16 | Extreme |
| Apr | 15 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 13 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Air quality in Isiolo in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Isiolo is worst in February — around 32 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (September, 19 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 30 | 32 | 31 | 28 | 25 | 28 | 27 | 21 | 19 | 20 | 29 | 32 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 30 | Moderate |
| Feb | 32 | Moderate |
| Mar | 31 | Moderate |
| Apr | 28 | Moderate |
| May | 25 | Moderate |
| Jun | 28 | Moderate |
| Jul | 27 | Moderate |
| Aug | 21 | Moderate |
| Sep | 19 | Moderate |
| Oct | 20 | Moderate |
| Nov | 29 | Moderate |
| Dec | 32 | Moderate |
Where is Isiolo?
Isiolo sits at 0.4°N, 37.6°E, 1,095 m above sea level, in Kenya. The nearest listed city is Meru, 35 km away.
Topography around Isiolo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Isiolo.
Within 3 km, the terrain around Isiolo has only modest variations in elevation — a maximum elevation change of 146 m around an average of 1,107 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 833 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,636 m.
The land around Isiolo is covered by grassland (39%), artificial surfaces (25%) and shrubs (24%) within 3 km, grassland (42%) and shrubs (39%) within 16 km, and shrubs (40%) and grassland (36%) within 80 km.
Kenya travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type G
- 240 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $2,363
- 2025
- Happiness
- 4.7 / 10
- World Happiness, 2025
- Homicide rate
- 4.9
- per 100k, 2022
- Road deaths
- 28.3
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- High
- EF EPI 593
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Isiolo (0.3546°, 37.5822°, elevation 1,095 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.