Kiserian weather in May

In May, Kiserian sees average daytime highs of 25°C and overnight lows near 16°C, with 82 mm of rain across 14.7 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 11% of the time in May, and the air most often feels comfortable.

Daylight stretches from about 12 hours at the start of May to 11 h 54 min by month's end. Set against the rest of the year, May is Kiserian's 9th-clearest and 10th-windiest month. For the whole year in context, see Kiserian's year-round climate.

Daytime high
25°
9th warmest
Overnight low
16°
8th coldest
Rainfall
82 mm
14.7 wet days
Daylight
11 h 54 min
6:31 AM – 6:28 PM
Cloud cover
67%
9th clearest
Wind
7 km/h
10th windiest
Solar energy
5.07 kWh/m²
Travel score
6.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical May day in Kiserian reaches about 25°C in the afternoon and slips back to 16°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 26°C. Set against its neighbours, May runs about 2°C cooler than April and about 1°C warmer than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12517
22517
32517
42517
52517
62516
72516
82516
92516
102516
112516
122516
132516
142516
152516
162516
172416
182416
192416
202416
212416
222416
232416
242415
252415
262415
272415
282415
292415
302415
312415

Kiserian weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 16°315.612.17.3
Feb28° / 16°234.4126.9
Mar28° / 17°499.4126.3
Apr26° / 17°10016.1125.6
May25° / 16°8214.711.96.1
Jun24° / 15°346.411.97.0
Jul23° / 14°112.611.97.4
Aug24° / 14°153.1127.5
Sep26° / 14°122.2127.7
Oct26° / 16°316.9127.0
Nov25° / 16°7515.812.15.8
Dec26° / 16°459.412.16.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 25% of May, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23268
33367
43367
53367
63466
73466
83565
93565
103763
113862
123862
133862
143961
153862
163862
173862
183763
193862
203862
213763
223763
233763
243664
253664
263664
273565
283565
293466
303466
313268

Chance of precipitation in May

Any precipitation

Kiserian gets around 82 mm of rain over 14.7 wet days in May. 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 65% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
164
265
364
464
564
663
762
861
959
1057
1155
1253
1351
1449
1547
1645
1743
1841
1939
2038
2136
2235
2334
2433
2532
2632
2732
2831
2931
3031
3131

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the comfortable band about 56% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
134255
234354
334354
434354
534453
634552
734750
834849
935047
1035245
1145442
1245640
1355837
1465935
1576033
1686131
1796229
18106327
19116425
20126424
21146422
22156421
23176320
24186319
25206119
26216118
27226018
28245818
29255817
30255817
31265717

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 hours at the start of May to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over May. Sunrise moves from 6:32 AM to 6:33 AM, and sunset from 6:29 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:326:29
211.96:326:29
311.96:326:29
411.96:326:29
511.96:326:28
611.96:326:28
711.96:316:28
811.96:316:28
911.96:316:28
1011.96:316:28
1111.96:316:28
1211.96:316:28
1311.96:316:28
1411.96:316:28
1511.96:316:28
1611.96:316:28
1711.96:316:28
1811.96:326:28
1911.96:326:28
2011.96:326:28
2111.96:326:28
2211.96:326:28
2311.96:326:28
2411.96:326:28
2511.96:326:28
2611.96:326:28
2711.96:326:28
2811.96:326:28
2911.96:336:28
3011.96:336:28
3111.96:336:28

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.07 kWh/m².

For context, solar energy here swings from a low near 4.38 kWh/m² to a high of 6.77 kWh/m² in February across the year — May's 5.07 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in May

Hazard calendar for Kiserian

In seasonPeak

In May, Kiserian sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Kiserian's rainy season runs March–May, when most of the year's rain falls.

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

Is May a good time to visit Kiserian?

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

6.1
Sightseeing
10th-best month of the year
5.4
Beach & pool
11th-best month of the year

May is a reasonable time to visit Kiserian for sightseeing.

What to pack for Kiserian in May

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

In May, Kiserian sees daytime highs around 25°C and nights near 16°C. Pack rain gear. Worth having: light clothes and sun protection. About 15 days see rain.

rain gearlight clothessun protection

UV index in Kiserian in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kiserian 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 Kiserian in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Kiserian 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 Kiserian?

Kiserian sits at 1.4°S, 36.7°E, 1,840 m above sea level, in Kenya. The nearest listed city is Ngong, 9.0 km away.

Topography around Kiserian

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

Within 3 km, the terrain around Kiserian has significant variations in elevation — a maximum elevation change of 309 m around an average of 1,870 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 994 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,418 m.

The land around Kiserian is covered by trees (30%), shrubs (25%) and grassland (20%) within 3 km, grassland (45%) and shrubs (29%) within 16 km, and grassland (40%) and shrubs (36%) within 80 km.

3 km
309 m
16 km
994 m
80 km
2,418 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Ngong 9.0 km · Lang'ata 9.0 km · Ongata Rongai 9.0 km · Kikuyu 20 km · Nairobi 22 km · Pumwani 24 km · Imara Daima Estate 24 km · Mlolongo 28 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 Kiserian (-1.4275°, 36.6865°, elevation 1,840 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).