Athi River weather in December

In December, Athi River sees average daytime highs of 24°C and overnight lows near 15°C, with 69 mm of rain across 15.2 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 26% of the time in December, and the air most often feels comfortable.

Daylight stretches from about 12 h 06 min at the start of December to 12 h 06 min by month's end. Set against the rest of the year, December is Athi River's 4th-clearest and 3rd-windiest month. For the whole year in context, see Athi River's year-round climate.

Daytime high
24°
7th warmest
Overnight low
15°
7th coldest
Rainfall
69 mm
15.2 wet days
Daylight
12 h 06 min
6:26 AM – 6:31 PM
Cloud cover
57%
4th clearest
Wind
11 km/h
3rd windiest
Solar energy
5.75 kWh/m²
Travel score
6.2
out of 10

Athi River is town in Kenya.

Density
117/km²
people per km²

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 24°C through the month.

A typical December day in Athi River reaches about 24°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 26°C. Set against its neighbours, December runs on par with November and about 1°C cooler than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12416
22416
32416
42416
52416
62415
72415
82415
92415
102415
112415
122415
132415
142415
152415
162415
172415
182415
192415
202415
212415
222415
232415
242415
252415
262515
272515
282515
292515
302515
312515

Athi River weather by month

How December compares with the rest of the year at a glance. December is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 15°417.812.17.2
Feb27° / 16°366.5127.1
Mar27° / 16°7213.4126.2
Apr25° / 16°13321.4125.0
May24° / 16°8015.611.96.0
Jun23° / 14°316.711.96.8
Jul22° / 13°112.711.97.2
Aug23° / 13°153127.3
Sep24° / 14°112.2127.9
Oct25° / 15°378.6126.9
Nov24° / 16°11421.312.15.1
Dec24° / 15°6915.212.16.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 29% of December, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24456
34555
44753
54753
64951
74951
85149
95248
105347
115446
125545
135545
145644
155743
165743
175743
185842
195842
205842
215842
225842
235941
245941
256040
266040
276040
286040
296040
306139
316040

Chance of precipitation in December

Any precipitation

Athi River gets around 69 mm of rain over 15.2 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 49% and peaks near 70% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
170
269
368
467
565
663
762
860
958
1056
1154
1252
1351
1449
1548
1646
1745
1844
1944
2043
2142
2241
2340
2439
2538
2637
2736
2836
2935
3034
3133

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the comfortable band about 58% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
135443
235542
335641
445640
545739
655738
765638
875637
985636
1095734
11105733
12115732
13115831
14125929
15135928
16145927
17155926
18156025
19166024
20166024
21176023
22176122
23186022
24196021
25205921
26205921
27215821
28225721
29235621
30235621
31245521

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 06 min at the start of December to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:19 AM to 6:33 AM, and sunset from 6:24 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:196:24
212.16:206:25
312.16:206:25
412.16:216:25
512.16:216:26
612.16:216:26
712.16:226:27
812.16:226:27
912.16:236:28
1012.16:236:28
1112.16:236:28
1212.16:246:29
1312.16:246:29
1412.16:256:30
1512.16:256:30
1612.16:266:31
1712.16:266:31
1812.16:276:32
1912.16:276:32
2012.16:286:33
2112.16:286:33
2212.16:296:34
2312.16:296:34
2412.16:296:35
2512.16:306:35
2612.16:306:35
2712.16:316:36
2812.16:316:36
2912.16:326:37
3012.16:326:37
3112.16:336:38

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 4.19 kWh/m² to a high of 6.77 kWh/m² in February across the year — December's 5.75 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.4Bright
55.4Bright
65.4Bright
75.5Bright
85.5Bright
95.5Bright
105.6Bright
115.6Bright
125.7Bright
135.7Bright
145.7Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
236.0Bright
246.0Bright
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in December

Is December a good time to visit Athi River?

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

6.2
Sightseeing
8th-best month of the year
5.3
Beach & pool
7th-best month of the year

December is a reasonable time to visit Athi River for sightseeing.

What to pack for Athi River in December

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

In December, Athi River sees daytime highs around 24°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 15 days see rain.

rain gearlight clothessun protection

UV index in Athi River 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 Athi River peaks around March 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 10 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 16Jun 18UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug12Extreme
Sep14Extreme
Oct14Extreme
Nov14Extreme
Dec13Extreme

Air quality in Athi River 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 Athi River is worst in June — around 53 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJun 1652 µg/m³Oct 1033 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb43Poor
Mar41Poor
Apr44Poor
May47Poor
Jun53Poor
Jul48Poor
Aug39Poor
Sep34Moderate
Oct33Moderate
Nov45Poor
Dec50Poor
Location & terrain

Where is Athi River?

Athi River sits at 1.5°S, 37.0°E, 1,505 m above sea level, in Kenya. The nearest listed city is Kitengela, 3.0 km away.

Topography around Athi River

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Athi River.

Within 3 km, the terrain around Athi River has only modest variations in elevation — a maximum elevation change of 90 m around an average of 1,530 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 383 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,069 m.

The land around Athi River is covered by grassland (43%) and artificial surfaces (36%) within 3 km, grassland (78%) within 16 km, and shrubs (40%) and grassland (34%) within 80 km.

3 km
90 m
16 km
383 m
80 km
2,069 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Kitengela 3.0 km · Mlolongo 8.0 km · Githunguri 17 km · Imara Daima Estate 18 km · Pumwani 24 km · Ongata Rongai 25 km · Nairobi 26 km · Lang'ata 29 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 Athi River (-1.4563°, 36.9783°, elevation 1,505 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).