Kericho weather in September

In September, Kericho sees average daytime highs of 26°C and overnight lows near 15°C, with 110 mm of rain across 16.1 wet days and about 12 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 15% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Kericho's 5th-clearest and 4th-windiest month. For the whole year in context, see Kericho's year-round climate.

Daytime high
26°
6th warmest
Overnight low
15°
5th coldest
Rainfall
110 mm
16.1 wet days
Daylight
12 hours
6:33 AM – 6:33 PM
Cloud cover
64%
5th clearest
Wind
6 km/h
4th windiest
Solar energy
6.09 kWh/m²
Travel score
5.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical September day in Kericho reaches about 26°C in the afternoon and slips back to 15°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 28°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12515
22515
32615
42615
52615
62615
72615
82615
92615
102615
112615
122615
132615
142615
152615
162615
172615
182615
192615
202715
212715
222715
232715
242715
252715
262715
272715
282715
292715
302715

Kericho weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 15°9610.8126.2
Feb29° / 15°568.3125.7
Mar28° / 15°16214.9125.2
Apr26° / 15°36023.3124.4
May25° / 15°23722.2125.0
Jun24° / 15°9017.5125.6
Jul24° / 14°6015.1126.0
Aug25° / 15°7817.2125.6
Sep26° / 15°11016.1125.6
Oct26° / 15°20719.5125.0
Nov26° / 15°27721.4124.8
Dec27° / 15°15214.1125.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 27% of September, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
23961
34060
44060
54159
64159
74258
84456
94456
104555
114753
124753
134753
144852
154852
164753
174753
184654
194555
204555
214357
224357
234159
244060
253961
263862
273862
283763
293862
303763

Chance of precipitation in September

Any precipitation

Kericho gets around 110 mm of rain over 16.1 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 54% and peaks near 61% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
161
261
360
460
559
658
757
857
956
1055
1154
1253
1351
1450
1550
1649
1749
1848
1949
2049
2149
2250
2351
2452
2553
2653
2754
2855
2955
3056

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 57% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
153470
253470
353470
454460
554460
655450
755450
856440
957430
1058420
1159410
1260400
1360400
1461390
1562380
1662380
1761381
1861381
1961381
2060391
2159401
2259401
2358411
2456431
2555441
2654451
2754451
2853461
2952471
3051481

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

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

Days grow by about 0 minutes over September. Sunrise moves from 6:39 AM to 6:28 AM, and sunset from 6:38 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:396:38
212.06:386:38
312.06:386:38
412.06:386:37
512.06:376:37
612.06:376:37
712.06:376:36
812.06:366:36
912.06:366:36
1012.06:366:35
1112.06:356:35
1212.06:356:35
1312.06:346:34
1412.06:346:34
1512.06:346:33
1612.06:336:33
1712.06:336:33
1812.06:326:32
1912.06:326:32
2012.06:326:32
2112.06:316:31
2212.06:316:31
2312.06:316:31
2412.06:306:30
2512.06:306:30
2612.06:296:30
2712.06:296:29
2812.06:296:29
2912.06:286:29
3012.06:286:28

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.09 kWh/m².

For context, solar energy here swings from a low near 5.04 kWh/m² to a high of 6.85 kWh/m² in February across the year — September's 6.09 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.8Bright
55.8Bright
65.8Bright
75.9Bright
85.9Bright
95.9Bright
106.0Bright
116.0Intense
126.0Intense
136.1Intense
146.1Intense
156.1Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Is September a good time to visit Kericho?

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

5.6
Sightseeing
5th-best month of the year
5.4
Beach & pool
5th-best month of the year

September is a reasonable time to visit Kericho for sightseeing.

What to pack for Kericho in September

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

In September, Kericho sees daytime highs around 26°C and nights near 15°C. Pack rain gear and sun protection. Worth having: light clothes. About 16 days see rain.

rain gearsun protectionlight clothes

UV index in Kericho in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Kericho peaks around March 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 15UV 16Jun 17UV 11
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Air quality in Kericho in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Kericho is worst in June — around 79 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyJun 1778 µg/m³Feb 1758 µg/m³
PM2.5 (µg/m³)Level
Jan62Unhealthy
Feb57Unhealthy
Mar60Unhealthy
Apr64Unhealthy
May71Unhealthy
Jun79Unhealthy
Jul73Unhealthy
Aug69Unhealthy
Sep70Unhealthy
Oct68Unhealthy
Nov65Unhealthy
Dec65Unhealthy
Location & terrain

Where is Kericho?

Kericho sits at 0.4°S, 35.3°E, 2,002 m above sea level, in Kenya. The nearest listed city is Muhoroni, 25 km away.

OyugisKisumuKapsabetKisii

Topography around Kericho

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

Within 3 km, the terrain around Kericho has only modest variations in elevation — a maximum elevation change of 222 m around an average of 1,999 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,028 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,943 m.

The land around Kericho is covered by trees (57%) and shrubs (25%) within 3 km, trees (61%) and shrubs (29%) within 16 km, and trees (47%) within 80 km.

3 km
222 m
16 km
1,028 m
80 km
1,943 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Muhoroni 25 km · Nyamira 44 km · Molo 52 km · Elburgon 59 km · Oyugis 63 km · Kisumu 65 km · Kapsabet 67 km · Kisii 67 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 Kericho (-0.3677°, 35.2831°, elevation 2,002 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).