Upper Gilgil weather in September

In September, Upper Gilgil sees average daytime highs of 21°C and overnight lows near 10°C, with 153 mm of rain across 14.1 wet days and about 12 hours of daylight. It is the 8th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 8% 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 Upper Gilgil's 5th-clearest and 5th-windiest month. For the whole year in context, see Upper Gilgil's year-round climate.

Daytime high
21°
8th warmest
Overnight low
10°
3rd coldest
Rainfall
153 mm
14.1 wet days
Daylight
12 hours
6:29 AM – 6:29 PM
Cloud cover
66%
5th clearest
Wind
6 km/h
5th windiest
Solar energy
6.23 kWh/m²
Travel score
5.8
out of 10

Upper Gilgil is A town in Nakuru 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

Day-to-day highs hold fairly steady near 21°C through the month.

A typical September day in Upper Gilgil reaches about 21°C in the afternoon and slips back to 10°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 23°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12011
22111
32111
42111
52111
62111
72110
82110
92110
102110
112110
122110
132110
142110
152110
162210
172210
182210
192210
202210
212210
222210
232210
242210
252210
262210
272211
282211
292211
302211

Upper Gilgil weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 10°666.8127.3
Feb25° / 10°464.8127.5
Mar25° / 11°1459.2126.9
Apr23° / 12°33018.3125.3
May22° / 12°27316.9125.5
Jun21° / 12°13216.4125.3
Jul20° / 11°12919.6124.7
Aug20° / 11°15520.3124.7
Sep21° / 10°15314.1125.8
Oct22° / 11°31317.1125.3
Nov21° / 11°31520.3124.8
Dec22° / 11°12911.3126.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 33% of September, with mostly cloudy or overcast conditions the remaining 60%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13169
23268
33367
43466
53565
63763
73862
83961
94159
104258
114357
124357
134456
144555
154555
164555
174555
184555
194555
204456
214357
224258
234258
244159
254159
264060
273961
283961
293961
303862

Chance of precipitation in September

Any precipitation

Upper Gilgil gets around 153 mm of rain over 14.1 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 47% and peaks near 64% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
164
263
362
461
559
658
756
854
952
1051
1149
1247
1346
1445
1544
1643
1742
1841
1941
2040
2140
2240
2340
2440
2540
2640
2740
2840
2940
3040

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 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1973
2973
3973
4973
5973
6973
7973
8973
9973
10973
11964
12964
13964
14964
15964
16964
17964
18964
19964
20964
21973
22973
23973
24973
25973
26973
27982
28982
29982
30982

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 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
256calm
266calm
276calm
286calm
296calm
306calm

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 6:35 AM to 6:24 AM, and sunset from 6:34 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:356:34
212.06:346:34
312.06:346:34
412.06:346:33
512.06:336:33
612.06:336:33
712.06:336:32
812.06:326:32
912.06:326:32
1012.06:326:31
1112.06:316:31
1212.06:316:31
1312.06:306:30
1412.06:306:30
1512.06:306:30
1612.06:296:29
1712.06:296:29
1812.06:296:28
1912.06:286:28
2012.06:286:28
2112.06:276:27
2212.06:276:27
2312.06:276:27
2412.06:266:26
2512.06:266:26
2612.06:266:26
2712.06:256:25
2812.06:256:25
2912.06:256:25
3012.06:246:24

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.23 kWh/m².

For context, solar energy here swings from a low near 4.92 kWh/m² to a high of 7.06 kWh/m² in February across the year — September's 6.23 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.8Bright
55.8Bright
65.9Bright
75.9Bright
86.0Bright
96.0Intense
106.1Intense
116.1Intense
126.2Intense
136.2Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.4Intense
246.4Intense
256.4Intense
266.4Intense
276.4Intense
286.4Intense
296.4Intense
306.4Intense
Planning a trip in September

Is September a good time to visit Upper Gilgil?

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

5.8
Sightseeing
5th-best month of the year
3.7
Beach & pool
6th-best month of the year

September is a reasonable time to visit Upper Gilgil for sightseeing.

What to pack for Upper Gilgil in September

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

In September, Upper Gilgil sees daytime highs around 21°C and nights near 10°C. Pack rain gear and sun protection. About 14 days see rain.

rain gearsun protection

UV index in Upper Gilgil in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Upper Gilgil 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 Upper Gilgil 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 Upper Gilgil is worst in June — around 38 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateJun 2338 µg/m³Jan 1227 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb29Moderate
Mar32Moderate
Apr28Moderate
May31Moderate
Jun38Poor
Jul37Poor
Aug32Moderate
Sep30Moderate
Oct28Moderate
Nov28Moderate
Dec27Moderate
Location & terrain

Where is Upper Gilgil?

Upper Gilgil sits at 0.2°S, 36.3°E, 2,710 m above sea level, in Kenya. The nearest listed city is Ol Kalou, 14 km away.

Topography around Upper Gilgil

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

Within 3 km, the terrain around Upper Gilgil has significant variations in elevation — a maximum elevation change of 295 m around an average of 2,664 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 985 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,006 m.

The land around Upper Gilgil is covered by trees (36%), shrubs (22%) and cropland (22%) within 3 km, cropland (42%) and trees (29%) within 16 km, and grassland (30%), trees (25%) and cropland (25%) within 80 km.

3 km
295 m
16 km
985 m
80 km
3,006 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Ol Kalou 14 km · Nakuru 25 km · Nyahururu 30 km · Mairo Inya 30 km · Gilgil 33 km · Njoro 39 km · Rongai 46 km · Elburgon 52 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 Upper Gilgil (-0.2121°, 36.2725°, elevation 2,710 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).