Koumassi weather in May

In May, Koumassi sees average daytime highs of 28°C and overnight lows near 26°C, with 205 mm of rain across 27.6 wet days and about 12.2 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 8% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 12 min at the start of May to 12 h 18 min by month's end. Set against the rest of the year, May is Koumassi's 12th-clearest and 10th-windiest month. For the whole year in context, see Koumassi's year-round climate.

Daytime high
28°
6th warmest
Overnight low
26°
7th coldest
Rainfall
205 mm
27.6 wet days
Daylight
12 h 12 min
6:05 AM – 6:19 PM
Cloud cover
79%
12th clearest
Wind
13 km/h
10th windiest
Solar energy
4.94 kWh/m²
Travel score
3.7
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical May day in Koumassi reaches about 28°C in the afternoon and slips back to 26°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 28°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12826
22826
32826
42826
52826
62826
72826
82826
92826
102826
112826
122826
132826
142826
152826
162826
172826
182826
192826
202826
212826
222826
232825
242725
252725
262725
272725
282725
292725
302725
312725

How May really feels in Koumassi

Once humidity and wind are folded in, May averages 14 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
14
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Koumassi weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 26°4712.811.76.2
Feb28° / 26°5315.411.85.3
Mar28° / 26°7820.3124.4
Apr28° / 26°10621.912.14.1
May28° / 26°20527.612.23.7
Jun27° / 25°25627.212.33.8
Jul25° / 24°12819.312.35.2
Aug25° / 23°6113.312.26.1
Sep25° / 24°8718125.4
Oct26° / 25°10723.211.94.7
Nov28° / 25°9623.611.84.4
Dec28° / 26°6417.711.75.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 78%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22773
32674
42674
52674
62674
72674
82674
92575
102476
112476
122476
132377
142377
152377
162377
172278
182278
192179
202179
212080
222080
231981
241981
251783
261783
271783
281783
291684
301684
311684

Chance of precipitation in May

Any precipitation

Koumassi gets around 205 mm of rain over 27.6 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 88% and peaks near 95% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
181
281
382
483
583
684
784
885
985
1085
1186
1286
1386
1486
1587
1687
1788
1888
1989
2090
2190
2291
2392
2492
2593
2693
2794
2894
2995
3095
3195

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11981
22080
32179
42278
52476
62575
72773
82872
93070
103268
113367
123565
133763
143961
154159
164357
174654
184852
195050
205347
215545
225743
236040
246238
256535
266733
277030
287228
297525
307723
318020

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 12 min at the start of May to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over May. Sunrise moves from 6:08 AM to 6:05 AM, and sunset from 6:19 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:086:19
212.26:076:19
312.26:076:19
412.26:076:19
512.26:076:19
612.26:066:19
712.26:066:19
812.26:066:19
912.26:066:19
1012.26:066:19
1112.26:066:19
1212.26:056:19
1312.26:056:19
1412.26:056:19
1512.26:056:19
1612.26:056:19
1712.26:056:19
1812.26:056:20
1912.26:056:20
2012.36:056:20
2112.36:056:20
2212.36:056:20
2312.36:056:20
2412.36:056:20
2512.36:056:21
2612.36:056:21
2712.36:056:21
2812.36:056:21
2912.36:056:21
3012.36:056:22
3112.36:056:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.94 kWh/m².

For context, solar energy here swings from a low near 4.34 kWh/m² to a high of 5.68 kWh/m² in March across the year — May's 4.94 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.2Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.8Bright
214.8Bright
224.8Bright
234.7Bright
244.7Bright
254.7Bright
264.6Bright
274.6Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in May

Hazard calendar for Koumassi

In seasonPeak

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

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

Koumassi sees seasonal dust haze (January–February), heaviest in February.

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

Is May a good time to visit Koumassi?

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

3.7
Sightseeing
12th-best month of the year
4.0
Beach & pool
11th-best month of the year

May is a weaker month for outdoor sightseeing in Koumassi.

What to pack for Koumassi in May

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

In May, Koumassi sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Koumassi in May

The nearest coast averages about 28°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 km away) is warmest in April at about 28°C and coldest in August near 24°C.

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

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar28Warm
Apr28Tropical
May28Tropical
Jun27Warm
Jul25Warm
Aug24Refreshing
Sep24Warm
Oct26Warm
Nov28Tropical
Dec28Tropical

UV index in Koumassi in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Koumassi peaks around April 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highApr 11UV 13Jul 16UV 8
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr14Extreme
May11Extreme
Jun11Extreme
Jul8Very high
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in Koumassi 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 Koumassi is worst in January — around 72 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (August, 22 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorJan 1671 µg/m³Aug 2422 µg/m³
PM2.5 (µg/m³)Level
Jan72Unhealthy
Feb61Unhealthy
Mar42Poor
Apr40Poor
May29Moderate
Jun27Moderate
Jul25Moderate
Aug22Moderate
Sep22Moderate
Oct27Moderate
Nov36Poor
Dec61Unhealthy
Location & terrain

Where is Koumassi?

Koumassi sits at 5.3°N, 4.0°W, 4 m above sea level, in Ivory Coast. The nearest listed city is Marcory, 3.0 km away.

Bonoua

Topography around Koumassi

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

Within 3 km, the terrain around Koumassi has only modest variations in elevation — a maximum elevation change of 12 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 141 m; within 80 km, only modest variations in elevation — a maximum elevation change of 189 m.

The land around Koumassi is covered by artificial surfaces (68%) and water (26%) within 3 km, water (39%) and artificial surfaces (33%) within 16 km, and trees (60%) and water (33%) within 80 km.

3 km
12 m
16 km
141 m
80 km
189 m
treesgrasslandartificial surfacesbare terrainwater
May weather nearby: Marcory 3.0 km · Abidjan 7.0 km · Bingerville 11 km · Abobo 14 km · Anyama 24 km · Grand-Bassam 27 km · Azaguié 39 km · Bonoua 41 km

Ivory Coast travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 37% of US
price level, 2025
GDP per capita
$3,050
2025
Happiness
5.1 / 10
World Happiness, 2025
Safe drinking water
36%
of population, 2024
Road deaths
24.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 393

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 Koumassi (5.2972°, -3.9675°, elevation 4 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. 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. 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).