Ol Kalou weather in December

In December, Ol Kalou sees average daytime highs of 19°C and overnight lows near 9°C, with 95 mm of rain across 13.4 wet days and about 12 hours of daylight. It is the 6th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 19°C through the month. The sky is clear or mostly clear about 12% of the time in December, and the air most often feels dry.

Daylight stretches from about 12 hours at the start of December to 12 hours by month's end. Set against the rest of the year, December is Ol Kalou's 4th-clearest and 6th-windiest month. For the whole year in context, see Ol Kalou's year-round climate.

Daytime high
19°
6th warmest
Overnight low
7th coldest
Rainfall
95 mm
13.4 wet days
Daylight
12 hours
6:30 AM – 6:31 PM
Cloud cover
65%
4th clearest
Wind
7 km/h
6th windiest
Solar energy
5.75 kWh/m²
Travel score
5.6
out of 10

Ol Kalou is town in Kenya.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 19°C through the month.

A typical December day in Ol Kalou reaches about 19°C in the afternoon and slips back to 9°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 21°C. Set against its neighbours, December runs on par with November and about 1°C cooler than January.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1199
2199
3199
4199
5199
6199
7199
8199
9199
10199
11199
12199
13199
14199
15199
16199
17199
18199
19199
20199
21199
22199
23199
24209
25209
26209
27209
28209
29209
30209
31209

Ol Kalou weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 668.4126.6
Feb22° / 525.7127.1
Mar22° / 11211.8126.4
Apr20° / 10°23520.6124.6
May19° / 11°18118.4124.9
Jun18° / 10°13917.5124.8
Jul17° / 16422.1124.0
Aug18° / 19022.8123.9
Sep19° / 13816.8125.1
Oct19° / 20620124.6
Nov19° / 10°21123.4124.1
Dec19° / 9513.4125.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 26% of December, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23169
33169
43268
53367
63565
73565
83763
93664
103763
113862
123862
133961
143961
153862
164060
173961
183961
194159
204159
214159
224258
234258
244258
254357
264357
274456
284456
294555
304555
314555

Chance of precipitation in December

Any precipitation

Ol Kalou gets around 95 mm of rain over 13.4 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 43% and peaks near 63% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
163
262
360
459
557
656
755
853
951
1050
1148
1247
1345
1443
1542
1641
1739
1838
1937
2036
2136
2235
2334
2434
2533
2633
2733
2832
2932
3032
3132

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 hours at the start of December to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:24 AM to 6:37 AM, and sunset from 6:25 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:246:25
212.06:246:25
312.06:256:25
412.06:256:26
512.06:256:26
612.06:266:27
712.06:266:27
812.06:276:28
912.06:276:28
1012.06:276:28
1112.06:286:29
1212.06:286:29
1312.06:296:30
1412.06:296:30
1512.06:306:31
1612.06:306:31
1712.06:316:32
1812.06:316:32
1912.06:326:33
2012.06:326:33
2112.06:336:33
2212.06:336:34
2312.06:336:34
2412.06:346:35
2512.06:346:35
2612.06:356:36
2712.06:356:36
2812.06:366:37
2912.06:366:37
3012.06:376:38
3112.06:376:38

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.75 kWh/m².

For context, solar energy here swings from a low near 4.81 kWh/m² to a high of 6.95 kWh/m² in February across the year — December's 5.75 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.6Bright
95.6Bright
105.6Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
266.0Bright
276.0Bright
286.0Bright
296.0Bright
306.0Intense
316.0Intense
Planning a trip in December

Is December a good time to visit Ol Kalou?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.6
Sightseeing
4th-best month of the year
2.5
Beach & pool
5th-best month of the year

December is a reasonable time to visit Ol Kalou for sightseeing.

What to pack for Ol Kalou in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Ol Kalou sees daytime highs around 19°C and nights near 9°C. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

UV index in Ol Kalou in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks 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 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 16UV 17Jun 19UV 11
UV index (midday)Level
Jan16Extreme
Feb16Extreme
Mar17Extreme
Apr16Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep14Extreme
Oct15Extreme
Nov14Extreme
Dec13Extreme

Air quality in Ol Kalou in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December 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).

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2334 µg/m³Oct 1224 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb31Moderate
Mar28Moderate
Apr27Moderate
May28Moderate
Jun34Moderate
Jul34Moderate
Aug28Moderate
Sep25Moderate
Oct24Moderate
Nov27Moderate
Dec28Moderate
Location & terrain

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.

3 km
197 m
16 km
803 m
80 km
2,992 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Upper Gilgil 14 km · Gilgil 27 km · Mairo Inya 33 km · Nakuru 34 km · Nyahururu 34 km · Njoro 49 km · Naivasha 50 km · Rongai 58 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
Christian 86%Muslim 11%other 2%none 2%

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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).