Siaya weather in July

In July, Siaya sees average daytime highs of 26°C and overnight lows near 19°C, with 99 mm of rain across 19.9 wet days and about 12 hours of daylight. It is the 12th-warmest and 12th-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 17% of the time in July, and the air most often feels humid.

Daylight stretches from about 12 hours at the start of July to 12 hours by month's end. Set against the rest of the year, July is Siaya's 6th-clearest and 7th-windiest month. For the whole year in context, see Siaya's year-round climate.

Daytime high
26°
12th warmest
Overnight low
19°
1st coldest
Rainfall
99 mm
19.9 wet days
Daylight
12 hours
6:48 AM – 6:49 PM
Cloud cover
65%
6th clearest
Wind
6 km/h
7th windiest
Solar energy
5.49 kWh/m²
Travel score
5.1
out of 10

Siaya is town in Siaya County, Kenya.

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical July day in Siaya reaches about 26°C in the afternoon and slips back to 19°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 27°C. Set against its neighbours, July runs on par with June and on par with August.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12619
22619
32619
42619
52619
62619
72619
82619
92619
102619
112619
122619
132619
142619
152619
162619
172619
182619
192619
202619
212619
222619
232619
242619
252619
262619
272619
282619
292619
302619
312619

Siaya weather by month

How July compares with the rest of the year at a glance. July is the 12th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 20°13718.3125.3
Feb28° / 20°10715.2125.1
Mar27° / 20°19822.8124.6
Apr26° / 20°28027.5123.7
May26° / 20°23128.4123.9
Jun26° / 19°12923.4124.5
Jul26° / 19°9919.9125.1
Aug26° / 19°12422.6124.8
Sep27° / 19°13424.4124.3
Oct27° / 20°21228.1123.8
Nov26° / 19°23227.3123.8
Dec27° / 19°18323.1124.7

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 27% of July, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24357
34357
44357
54456
64456
74555
84555
94654
104654
114654
124654
134555
144555
154555
164654
174654
184555
194555
204456
214456
224456
234456
244456
254357
264258
274357
284357
294357
304357
314357

Chance of precipitation in July

Any precipitation

Siaya gets around 99 mm of rain over 19.9 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 65% and peaks near 71% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
171
271
370
469
568
667
767
866
965
1065
1164
1264
1363
1463
1563
1663
1763
1863
1963
2063
2163
2263
2363
2463
2564
2664
2764
2865
2965
3066
3166

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the humid band about 90% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
118316
218415
328414
428612
528711
628810
72899
83889
93898
103907
113916
123925
133925
143934
153934
163934
173934
183934
192944
202935
212935
222926
232926
242917
252917
262917
272908
282908
292908
302908
312908

Wind in July

Winds average 6 km/h in July.

Across July, 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.

0246810151015202531
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
316calm

Sunrise & sunset in July

DaylightNight

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

Days grow by about 0 minutes over July. Sunrise moves from 6:46 AM to 6:49 AM, and sunset from 6:46 PM to 6:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:466:46
212.06:466:46
312.06:466:47
412.06:476:47
512.06:476:47
612.06:476:47
712.06:476:47
812.06:476:48
912.06:476:48
1012.06:486:48
1112.06:486:48
1212.06:486:48
1312.06:486:48
1412.06:486:48
1512.06:486:48
1612.06:486:49
1712.06:486:49
1812.06:496:49
1912.06:496:49
2012.06:496:49
2112.06:496:49
2212.06:496:49
2312.06:496:49
2412.06:496:49
2512.06:496:49
2612.06:496:49
2712.06:496:49
2812.06:496:49
2912.06:496:49
3012.06:496:49
3112.06:496:49

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.49 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 5.49 kWh/m² to a high of 6.74 kWh/m² in February across the year — July's 5.49 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
315.6Bright
Planning a trip in July

Is July a good time to visit Siaya?

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

5.1
Sightseeing
2nd-best month of the year
4.9
Beach & pool
3rd-best month of the year

July is a reasonable time to visit Siaya for sightseeing.

What to pack for Siaya in July

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

In July, Siaya sees daytime highs around 26°C and nights near 19°C. Pack rain gear. Worth having: light clothes and sun protection. About 20 days see rain.

rain gearlight clothessun protection

UV index in Siaya in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Siaya peaks around March 16 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeMar 16UV 16Jun 18UV 10
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct14Extreme
Nov12Extreme
Dec11Extreme

Air quality in Siaya in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Siaya is worst in June — around 78 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyJun 2177 µg/m³Apr 967 µg/m³
PM2.5 (µg/m³)Level
Jan74Unhealthy
Feb68Unhealthy
Mar67Unhealthy
Apr67Unhealthy
May69Unhealthy
Jun78Unhealthy
Jul76Unhealthy
Aug74Unhealthy
Sep71Unhealthy
Oct73Unhealthy
Nov77Unhealthy
Dec76Unhealthy
Location & terrain

Where is Siaya?

Siaya sits at 0.1°N, 34.3°E, 1,321 m above sea level, in Kenya. The nearest listed city is Bondo, 18 km away.

Topography around Siaya

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

Within 3 km, the terrain around Siaya has only modest variations in elevation — a maximum elevation change of 156 m around an average of 1,292 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 310 m; within 80 km, large variations in elevation — a maximum elevation change of 1,175 m.

The land around Siaya is covered by shrubs (37%) and grassland (29%) within 3 km, shrubs (42%) and grassland (35%) within 16 km, and water (29%) and shrubs (27%) within 80 km.

3 km
156 m
16 km
310 m
80 km
1,175 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
July weather nearby: Bondo 18 km · Khwisero 36 km · Lugulu 37 km · Mumias 38 km · Mbale 48 km · Busia 49 km · Busia 50 km · Kisumu 56 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 Siaya (0.0607°, 34.2881°, elevation 1,321 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).