Nyamira weather in September

In September, Nyamira sees average daytime highs of 26°C and overnight lows near 15°C, with 126 mm of rain across 18.6 wet days and about 12 hours of daylight. It is the 7th-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 16% 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 Nyamira's 3rd-clearest and 4th-windiest month. For the whole year in context, see Nyamira's year-round climate.

Daytime high
26°
7th warmest
Overnight low
15°
3rd coldest
Rainfall
126 mm
18.6 wet days
Daylight
12 hours
6:35 AM – 6:34 PM
Cloud cover
62%
3rd clearest
Wind
5 km/h
4th windiest
Solar energy
6.27 kWh/m²
Travel score
5.3
out of 10

Nyamira is human settlement.

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 26°C through the month.

A typical September day in Nyamira reaches about 26°C in the afternoon and slips back to 15°C overnight — a 11°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
32515
42515
52515
62515
72515
82615
92615
102615
112615
122615
132615
142615
152615
162615
172615
182615
192615
202615
212615
222615
232615
242615
252615
262615
272615
282615
292615
302615

Nyamira weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 15°9613.2126.1
Feb28° / 16°6310.1125.8
Mar28° / 16°15817.4125.1
Apr26° / 16°33425.9124.0
May25° / 16°24224.4124.6
Jun25° / 15°12619.6125.2
Jul25° / 15°8918.2125.6
Aug25° / 15°11919.6125.3
Sep26° / 15°12618.6125.3
Oct26° / 16°20323.5124.5
Nov26° / 15°24624.7124.3
Dec26° / 15°13817.6125.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 32% of September, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24852
34852
44951
55050
65050
75050
85248
95248
105248
115347
125347
135347
145347
155248
165248
175149
185149
195050
204951
214852
224753
234654
244555
254357
264357
274258
284060
293961
303961

Chance of precipitation in September

Any precipitation

Nyamira gets around 126 mm of rain over 18.6 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 62% and peaks near 67% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
167
267
366
466
566
665
765
864
963
1063
1162
1261
1360
1460
1559
1659
1759
1858
1958
2059
2159
2260
2360
2461
2562
2663
2764
2865
2966
3067

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 61% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
123689
2246610
3246610
4246610
5246610
6256510
7256411
8266311
9266311
10276112
11276112
12286012
13295813
14295813
15305713
16305713
17305713
18305713
19305713
20305713
21295714
22295714
23285814
24275815
25265915
26255916
27246016
28236017
29226117
30216217

Wind in September

Winds average 5 km/h in September.

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

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
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 6:40 AM to 6:29 AM, and sunset from 6:40 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:406:40
212.06:406:39
312.06:406:39
412.06:396:39
512.06:396:38
612.06:386:38
712.06:386:38
812.06:386:37
912.06:376:37
1012.06:376:37
1112.06:376:36
1212.06:366:36
1312.06:366:36
1412.06:356:35
1512.06:356:35
1612.06:356:34
1712.06:346:34
1812.06:346:34
1912.06:346:33
2012.06:336:33
2112.06:336:33
2212.06:326:32
2312.06:326:32
2412.06:326:32
2512.06:316:31
2612.06:316:31
2712.06:306:31
2812.06:306:30
2912.06:306:30
3012.06:296:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.27 kWh/m².

For context, solar energy here swings from a low near 5.3 kWh/m² to a high of 6.75 kWh/m² in February across the year — September's 6.27 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
26.0Bright
36.0Bright
46.0Intense
56.0Intense
66.0Intense
76.1Intense
86.1Intense
96.1Intense
106.2Intense
116.2Intense
126.2Intense
136.3Intense
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
306.3Intense
Planning a trip in September

Is September a good time to visit Nyamira?

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

5.3
Sightseeing
5th-best month of the year
5.0
Beach & pool
5th-best month of the year

September is a reasonable time to visit Nyamira for sightseeing.

What to pack for Nyamira in September

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

In September, Nyamira sees daytime highs around 26°C and nights near 15°C. Pack rain gear and sun protection. Worth having: light clothes. About 19 days see rain.

rain gearsun protectionlight clothes

UV index in Nyamira 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 Nyamira peaks around March 15 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 15UV 16Jun 18UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar16Extreme
Apr14Extreme
May12Extreme
Jun10Very high
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec12Extreme

Air quality in Nyamira 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 Nyamira is worst in June — around 56 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorJun 1956 µg/m³Sep 1946 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb47Poor
Mar50Poor
Apr49Poor
May51Poor
Jun56Unhealthy
Jul54Poor
Aug48Poor
Sep46Poor
Oct47Poor
Nov50Poor
Dec51Poor
Location & terrain

Where is Nyamira?

Nyamira sits at 0.6°S, 34.9°E, 2,000 m above sea level, in Kenya. The nearest listed city is Kisii, 23 km away.

Topography around Nyamira

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

Within 3 km, the terrain around Nyamira has significant variations in elevation — a maximum elevation change of 338 m around an average of 1,959 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 787 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,660 m.

The land around Nyamira is covered by trees (72%) and shrubs (20%) within 3 km, trees (67%) and shrubs (25%) within 16 km, and trees (38%), grassland (25%) and shrubs (21%) within 80 km.

3 km
338 m
16 km
787 m
80 km
1,660 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Kisii 23 km · Oyugis 24 km · Thomas Magena home 31 km · Ogembo 35 km · Rongo 43 km · Kericho 44 km · Homa Bay 53 km · Muhoroni 54 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 Nyamira (-0.5633°, 34.9358°, elevation 2,000 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).