Kitui weather in September

In September, Kitui sees average daytime highs of 27°C and overnight lows near 17°C, with 7 mm of rain across 2.1 wet days and about 12 hours of daylight. It is the 5th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°C by the end. The sky is clear or mostly clear about 29% of the time in September, and the air most often feels comfortable.

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 Kitui's 4th-clearest and 2nd-windiest month. For the whole year in context, see Kitui's year-round climate.

Daytime high
27°
5th warmest
Overnight low
17°
3rd coldest
Rainfall
7 mm
2.1 wet days
Daylight
12 hours
6:23 AM – 6:22 PM
Cloud cover
54%
4th clearest
Wind
13 km/h
2nd windiest
Solar energy
5.9 kWh/m²
Travel score
7.5
out of 10

Kitui is municipality in Kitui County, Kenya.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 26°C in the first days to 28°C by the end.

A typical September day in Kitui reaches about 27°C in the afternoon and slips back to 17°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12617
22617
32617
42717
52717
62717
72717
82717
92717
102717
112717
122717
132717
142717
152717
162817
172817
182817
192817
202817
212817
222817
232817
242817
252817
262817
272817
282817
292817
302817

Kitui weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°6911.212.16.4
Feb29° / 18°497.6125.9
Mar29° / 19°9517124.8
Apr28° / 19°13523.2124.5
May26° / 18°5712.811.96.2
Jun26° / 17°72.411.97.5
Jul25° / 16°41.511.97.7
Aug26° / 16°51.5127.7
Sep27° / 17°72.1127.5
Oct28° / 18°499.7126.1
Nov27° / 19°19924.112.14.5
Dec26° / 18°1292112.15.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 25% of September, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14258
24258
34258
44357
54555
64654
74654
84951
95050
105149
115248
125347
135545
145545
155743
165743
175941
185941
196040
206139
216139
226139
236238
246238
256238
266337
276337
286337
296436
306337

Chance of precipitation in September

Any precipitation

Kitui gets around 7 mm of rain over 2.1 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 7% and peaks near 11% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
15
25
35
45
55
65
76
86
96
106
116
126
137
147
157
167
177
187
197
208
218
228
238
249
259
269
2710
2810
2911
3011

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 67% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1286930
2286840
3286840
4286840
5276850
6276850
7276850
8276760
9266860
10266860
11266860
12266770
13256870
14256870
15256780
16256780
17246880
18246880
19236890
20236890
212268100
222268100
232168110
242068120
252067130
261967140
271866160
281766170
291665181
301564201

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

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 6:28 AM to 6:17 AM, and sunset from 6:27 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:286:27
212.06:286:27
312.06:286:26
412.06:276:26
512.06:276:26
612.06:276:25
712.06:266:25
812.06:266:25
912.06:256:24
1012.06:256:24
1112.06:256:24
1212.06:246:23
1312.06:246:23
1412.06:236:23
1512.06:236:22
1612.06:236:22
1712.06:226:22
1812.06:226:21
1912.06:216:21
2012.06:216:21
2112.06:206:20
2212.06:206:20
2312.06:206:20
2412.06:196:19
2512.06:196:19
2612.06:186:19
2712.06:186:18
2812.06:186:18
2912.06:176:18
3012.06:176:18

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.9 kWh/m².

For context, solar energy here swings from a low near 4.55 kWh/m² to a high of 6.53 kWh/m² in February across the year — September's 5.9 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.4Bright
55.4Bright
65.5Bright
75.5Bright
85.6Bright
95.6Bright
105.7Bright
115.7Bright
125.8Bright
135.8Bright
145.9Bright
155.9Bright
166.0Bright
176.0Intense
186.0Intense
196.1Intense
206.1Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Kitui

In seasonPeak

None of Kitui's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Kitui's rainy season runs November–December, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Kitui?

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

7.5
Sightseeing
3rd-best month of the year
7.9
Beach & pool
1st-best month of the year

September is one of the better times to visit Kitui for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Kitui in September

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

In September, Kitui sees daytime highs around 27°C and nights near 17°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Kitui 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 Kitui peaks around March 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 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 17UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Very high
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Air quality in Kitui 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 Kitui is worst in December — around 20 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (October, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodModerateDec 2220 µg/m³Oct 118 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb17Moderate
Mar14Moderate
Apr14Moderate
May11Good
Jun13Moderate
Jul14Moderate
Aug11Good
Sep9Good
Oct8Good
Nov13Moderate
Dec20Moderate
Location & terrain

Where is Kitui?

Kitui sits at 1.4°S, 38.0°E, 1,154 m above sea level, in Kenya. The nearest listed city is Mwingi, 48 km away.

Makueni BomaKinoiMachakosEmaliMakindu

Topography around Kitui

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

Within 3 km, the terrain around Kitui has only modest variations in elevation — a maximum elevation change of 112 m around an average of 1,132 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 910 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,659 m.

The land around Kitui is covered by trees (41%) and shrubs (29%) within 3 km, shrubs (47%) and trees (21%) within 16 km, and shrubs (60%) within 80 km.

3 km
112 m
16 km
910 m
80 km
1,659 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Mwingi 48 km · Mwala 62 km · Wote 63 km · Makueni Boma 65 km · Kinoi 78 km · Machakos 85 km · Emali 99 km · Makindu 104 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 Kitui (-1.367°, 38.0106°, elevation 1,154 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).