Ol Kalou in Summer
In summer (December, January and February), Ol Kalou sees average daytime highs around 20°C and overnight lows near 9°C, with 213 mm of rain over about 28 wet days across the season. It is the 2nd-warmest season and the driest season of the year.
Over the season highs climb from about 19°C in early December to 22°C by late February. The sky is clear or mostly clear about 20% of the time across summer, and the air most often feels dry.
Summer is Ol Kalou's best season of the year to visit on our travel score. For the whole year in context, see Ol Kalou's year-round climate.
- Avg daytime high
- 20°C
- 2nd-warmest season
- Avg overnight low
- 9°C
- Rainfall
- 213 mm
- 28 wet days
- Avg wind
- 7 km/h
- Travel score
- 6.4
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Ol Kalou in Summer
Over the season highs climb from about 19°C in early December to 22°C by late February.
A typical summer day in Ol Kalou reaches about 20°C and drops to 9°C overnight. The warmest of the three months is February, the coolest February.
Ol Kalou weather by month
How the three summer months (December, January and February) 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 | 20° / 9° | 66 | 8.4 | 12 | 6.6 |
| Feb | 22° / 8° | 52 | 5.7 | 12 | 7.1 |
| Mar | 22° / 9° | 112 | 11.8 | 12 | 6.4 |
| Apr | 20° / 10° | 235 | 20.6 | 12 | 4.6 |
| May | 19° / 11° | 181 | 18.4 | 12 | 4.9 |
| Jun | 18° / 10° | 139 | 17.5 | 12 | 4.8 |
| Jul | 17° / 9° | 164 | 22.1 | 12 | 4.0 |
| Aug | 18° / 9° | 190 | 22.8 | 12 | 3.9 |
| Sep | 19° / 8° | 138 | 16.8 | 12 | 5.1 |
| Oct | 19° / 9° | 206 | 20 | 12 | 4.6 |
| Nov | 19° / 10° | 211 | 23.4 | 12 | 4.1 |
| Dec | 19° / 9° | 95 | 13.4 | 12 | 5.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 20% of the time across summer.
Chance of precipitation in Summer
Ol Kalou gets around 213 mm of rain over 28 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 hours in early December to 12 hours by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.4 kWh/m².
Is summer a good time to visit Ol Kalou?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Ol Kalou for sightseeing.
What to pack for Ol Kalou in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Ol Kalou sees daytime highs around 20°C and nights near 9°C. Pack sun protection. Worth having: rain gear. About 28 days see rain.
UV index in Ol Kalou in Summer
Clear-sky midday UV across summer averages around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ol Kalou peaks around March 16 at about 17 (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) | 16 | 16 | 17 | 16 | 13 | 11 | 12 | 13 | 14 | 15 | 14 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 16 | Extreme |
| Mar | 17 | Extreme |
| Apr | 16 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 14 | Extreme |
| Oct | 15 | Extreme |
| Nov | 14 | Extreme |
| Dec | 13 | Extreme |
Air quality in Ol Kalou in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Ol Kalou is worst in June — around 34 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 27 | 31 | 28 | 27 | 28 | 34 | 34 | 28 | 25 | 24 | 27 | 28 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 27 | Moderate |
| Feb | 31 | Moderate |
| Mar | 28 | Moderate |
| Apr | 27 | Moderate |
| May | 28 | Moderate |
| Jun | 34 | Moderate |
| Jul | 34 | Moderate |
| Aug | 28 | Moderate |
| Sep | 25 | Moderate |
| Oct | 24 | Moderate |
| Nov | 27 | Moderate |
| Dec | 28 | Moderate |
Where is Ol Kalou?
Ol Kalou sits at 0.3°S, 36.4°E, 2,348 m above sea level, in Kenya. The nearest listed city is Upper Gilgil, 14 km away.
Topography around Ol Kalou
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ol Kalou.
Within 3 km, the terrain around Ol Kalou has only modest variations in elevation — a maximum elevation change of 197 m around an average of 2,380 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 803 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,992 m.
The land around Ol Kalou is covered by cropland (51%) and grassland (23%) within 3 km, cropland (40%) and grassland (31%) within 16 km, and grassland (33%), trees (24%) and cropland (23%) 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 Ol Kalou (-0.2709°, 36.3792°, elevation 2,348 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.