Ruiru in Spring

In spring (September, October and November), Ruiru sees average daytime highs around 25°C and overnight lows near 15°C, with 176 mm of rain over about 33 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.

Across spring, daytime highs hold fairly steady around 25°C. The sky is clear or mostly clear about 17% of the time across spring, and the air most often feels dry.

Spring is Ruiru's 3rd-best season to visit on our travel score. For the whole year in context, see Ruiru's year-round climate.

Avg daytime high: 25°C; 3rd-warmest season
Avg overnight low: 15°C
Rainfall: 176 mm; 33 wet days
Avg wind: 9 km/h
Travel score: 6.5; 3rd-best season
Months: Sep · Oct · Nov

← Winter Ruiru year-round climate Summer →

Spring Summer Fall Winter

Temperature in Ruiru in Spring

Average highAverage lowShaded bands: 10–90% of days

Across spring, daytime highs hold fairly steady around 25°C.

A typical spring day in Ruiru reaches about 25°C and drops to 15°C overnight. The warmest of the three months is October, the coolest September.

Ruiru weather by month

How the three spring months (September, October and November) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	26° / 15°	30	6.8	12.1	7.3
Feb	27° / 16°	21	5.1	12	7.2
Mar	27° / 17°	58	12.7	12	6.2
Apr	25° / 17°	120	22	12	4.9
May	24° / 16°	74	15.1	11.9	6.1
Jun	23° / 15°	28	5.7	11.9	7.0
Jul	23° / 14°	9	2	11.9	7.3
Aug	23° / 14°	12	2.6	12	7.4
Sep	25° / 14°	10	2.1	12	7.8
Oct	26° / 16°	44	9.6	12	6.7
Nov	24° / 16°	123	21.2	12.1	5.1
Dec	25° / 15°	57	13.7	12.1	6.4

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Ruiru gets around 176 mm of rain over 33 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

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

Wind in Spring

Winds average 9 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 12 hours in early September to 12 h 06 min by late November. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 5.7 kWh/m².

Planning a trip in spring

Is spring a good time to visit Ruiru?

Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

6.5

Sightseeing

3rd-best month of the year

6.0

Beach & pool

2nd-best month of the year

spring is a reasonable time to visit Ruiru for sightseeing.

What to pack for Ruiru in Spring

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

In spring, Ruiru sees daytime highs around 25°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 33 days see rain.

rain gearlight clothessun protection

UV index in Ruiru in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages 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 Ruiru peaks around March 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 10 (extreme).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	15	15	16	15	11	10	11	12	14	14	14	13
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	15	Extreme
Feb	15	Extreme
Mar	16	Extreme
Apr	15	Extreme
May	11	Extreme
Jun	10	Extreme
Jul	11	Extreme
Aug	12	Extreme
Sep	14	Extreme
Oct	14	Extreme
Nov	14	Extreme
Dec	13	Extreme

Air quality in Ruiru in Spring

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Ruiru 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).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	48	43	41	44	47	53	48	39	34	33	45	50
Level	Poor	Poor	Poor	Poor	Poor	Poor	Poor	Poor	Moderate	Moderate	Poor	Poor

	PM2.5 (µg/m³)	Level
Jan	48	Poor
Feb	43	Poor
Mar	41	Poor
Apr	44	Poor
May	47	Poor
Jun	53	Poor
Jul	48	Poor
Aug	39	Poor
Sep	34	Moderate
Oct	33	Moderate
Nov	45	Poor
Dec	50	Poor

Location & terrain

Where is Ruiru?

Ruiru sits at 1.1°S, 37.0°E, 1,531 m above sea level, in Kenya. The nearest listed city is Juja, 8.0 km away.

Topography around Ruiru

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

Within 3 km, the terrain around Ruiru has only modest variations in elevation — a maximum elevation change of 66 m around an average of 1,531 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 362 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,970 m.

The land around Ruiru is covered by artificial surfaces (46%) and cropland (23%) within 3 km, grassland (24%) and artificial surfaces (20%) within 16 km, and grassland (34%) and shrubs (28%) within 80 km.

3 km

66 m

artificial surfaces 46%

16 km

362 m

grassland 24%

80 km

2,970 m

grassland 34%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← Winter Ruiru year-round climate Summer →

Spring weather nearby: Juja 8.0 km · Kiambu 14 km · Githunguri 17 km · Thika 17 km · Pumwani 20 km · Imara Daima Estate 22 km · Nairobi 22 km · Githunguri 23 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

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 Ruiru (-1.1466°, 36.9609°, elevation 1,531 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.