Mombasa weather in August

In August, Mombasa sees average daytime highs of 27°C and overnight lows near 23°C, with 49 mm of rain across 17.2 wet days and about 11.9 hours of daylight. It is the 11th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 47% of the time in August, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of August to 11 h 54 min by month's end. Set against the rest of the year, August is Mombasa's 8th-clearest and 4th-windiest month. For the whole year in context, see Mombasa's year-round climate.

Daytime high
27°
11th warmest
Overnight low
23°
1st coldest
Rainfall
49 mm
17.2 wet days
Daylight
11 h 54 min
6:29 AM – 6:21 PM
Cloud cover
48%
8th clearest
Wind
19 km/h
4th windiest
Solar energy
5.54 kWh/m²
Travel score
5.7
out of 10

Mombasa is city in Kenya.

Air quality
Moderate
PM2.5 10.8 µg/m³ · 2019
Density
4,100/km²
people per km²
Founded
1593

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical August day in Mombasa reaches about 27°C in the afternoon and slips back to 23°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 27°C. Set against its neighbours, August runs on par with July and on par with September.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12623
22623
32623
42623
52623
62623
72623
82623
92623
102623
112623
122623
132623
142623
152623
162623
172723
182723
192723
202723
212723
222723
232723
242723
252723
262723
272723
282723
292723
302723
312723

How August really feels in Mombasa

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Mombasa weather by month

How August compares with the rest of the year at a glance. August is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 26°183.512.25.6
Feb31° / 26°112.412.15.5
Mar31° / 26°4912.4124.4
Apr30° / 26°13624.411.93.5
May28° / 25°22324.111.84.3
Jun27° / 24°9220.511.85.0
Jul26° / 23°6919.811.85.2
Aug27° / 23°4917.211.95.7
Sep27° / 23°4314.8126.1
Oct28° / 24°7514.912.15.5
Nov29° / 25°6616.112.24.8
Dec30° / 25°461312.24.9

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 25% of August, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36535
46535
56535
66535
76634
86634
96832
106931
116931
127030
137030
147228
157327
167327
177426
187327
197426
207525
217525
227624
237624
247624
257723
267723
277822
287921
297921
308020
318119

Chance of precipitation in August

Any precipitation

Mombasa gets around 49 mm of rain over 17.2 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 56% and peaks near 63% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
163
263
362
462
562
661
761
860
959
1059
1158
1257
1356
1455
1554
1653
1753
1852
1952
2051
2151
2251
2351
2451
2551
2652
2752
2852
2953
3053
3153

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
116633
216633
316633
416732
516732
616831
716930
816930
917029
1017029
1107129
1207129
1307228
1407228
1507228
1607228
1707228
1807228
1907228
2007129
2107129
2207129
2307129
2407030
2507030
2606931
2706931
2806931
2906832
3006733
3106733

Wind in August

Winds average 19 km/h in August.

Across August, daily wind ranges from about 19 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820light breeze
920light breeze
1020light breeze
1120light breeze
1220light breeze
1320light breeze
1420light breeze
1519light breeze
1619light breeze
1719light breeze
1819light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 48 min at the start of August to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over August. Sunrise moves from 6:33 AM to 6:24 AM, and sunset from 6:22 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:336:22
211.86:336:22
311.86:326:22
411.86:326:22
511.86:326:22
611.86:326:22
711.86:326:22
811.86:326:22
911.86:316:22
1011.86:316:22
1111.96:316:22
1211.96:316:22
1311.96:306:22
1411.96:306:22
1511.96:306:22
1611.96:296:21
1711.96:296:21
1811.96:296:21
1911.96:286:21
2011.96:286:21
2111.96:286:21
2211.96:276:21
2311.96:276:20
2411.96:276:20
2511.96:266:20
2611.96:266:20
2711.96:266:20
2811.96:256:20
2911.96:256:19
3011.96:246:19
3111.96:246:19

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.54 kWh/m².

For context, solar energy here swings from a low near 4.67 kWh/m² to a high of 6.64 kWh/m² in February across the year — August's 5.54 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.7Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in August

Hazard calendar for Mombasa

In seasonPeak

None of Mombasa's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Mombasa sits in the South Indian Ocean cyclone belt; the season peaks January–March.

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

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

Is August a good time to visit Mombasa?

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

5.7
Sightseeing
2nd-best month of the year
5.7
Beach & pool
8th-best month of the year

August is a reasonable time to visit Mombasa for sightseeing.

What to pack for Mombasa in August

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

In August, Mombasa sees daytime highs around 27°C and nights near 23°C. Pack rain gear. Worth having: light clothes and sun protection. About 17 days see rain.

rain gearlight clothessun protection

Sea temperature near Mombasa in August

The nearest coast averages about 25°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in April at about 29°C and coldest in August near 25°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Warm
Mar29Tropical
Apr29Tropical
May28Warm
Jun27Warm
Jul26Warm
Aug25Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec28Tropical

UV index in Mombasa in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Mombasa peaks around March 19 at about 15 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 19UV 15Jun 18UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun9Very high
Jul10Extreme
Aug11Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Mombasa?

Mombasa sits at 4.1°S, 39.7°E, 20 m above sea level, in Kenya. The nearest listed city is Jomvu, 10 km away.

Topography around Mombasa

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

Within 3 km, the terrain around Mombasa has only modest variations in elevation — a maximum elevation change of 31 m around an average of 12 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 264 m; within 80 km, large variations in elevation — a maximum elevation change of 800 m.

The land around Mombasa is covered by artificial surfaces (46%) and water (35%) within 3 km, water (41%) and grassland (21%) within 16 km, and water (36%), grassland (24%) and shrubs (23%) within 80 km.

3 km
31 m
16 km
264 m
80 km
800 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
August weather nearby: Jomvu 10 km · Mtwapa 16 km · Mazeras 16 km · Matuga 16 km · Diani Beach 26 km · Ukunda 29 km · Mariakani 30 km · Kilifi 51 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 Mombasa (-4.0547°, 39.6636°, elevation 20 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).