Ouesso weather in May

In May, Ouesso sees average daytime highs of 30°C and overnight lows near 22°C, with 115 mm of rain across 20.2 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 16% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of May to 12 h 06 min by month's end. Set against the rest of the year, May is Ouesso's 3rd-clearest and 11th-windiest month. For the whole year in context, see Ouesso's year-round climate.

Daytime high
30°
5th warmest
Overnight low
22°
11th coldest
Rainfall
115 mm
20.2 wet days
Daylight
12 h 06 min
5:50 AM – 5:54 PM
Cloud cover
70%
3rd clearest
Wind
4 km/h
11th windiest
Solar energy
5.06 kWh/m²
Travel score
3.7
out of 10

Ouesso is city.

Density
8,133/km²
people per km²

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical May day in Ouesso reaches about 30°C in the afternoon and slips back to 22°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53123
63123
73123
83123
93023
103023
113023
123023
133023
143023
153023
163023
173022
183022
193022
203022
213022
223022
233022
243022
253022
263022
273022
283022
293022
303022
313022

How May really feels in Ouesso

Once humidity and wind are folded in, May averages 31 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
31
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.

Ouesso weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°539.211.94.6
Feb31° / 22°7511.711.93.9
Mar31° / 22°13919.8123.3
Apr31° / 23°14719.9123.4
May30° / 22°11520.212.13.7
Jun29° / 22°9518.212.14.3
Jul29° / 22°9117.812.14.5
Aug29° / 22°12422.312.13.9
Sep29° / 22°16925.1123.4
Oct29° / 22°18926.3123.3
Nov29° / 22°1592211.93.6
Dec30° / 22°7212.311.94.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 65%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32971
43070
53070
63070
73169
83169
93268
103367
113466
123565
133763
143763
153763
163862
173862
183862
193862
203862
213862
223862
233862
243862
253862
263763
273763
283664
293664
303763
313763

Chance of precipitation in May

Any precipitation

Ouesso gets around 115 mm of rain over 20.2 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 65% and peaks near 68% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
168
268
368
468
568
668
768
868
968
1067
1167
1266
1365
1465
1565
1664
1764
1863
1963
2063
2163
2262
2362
2462
2562
2663
2763
2863
2962
3062
3162

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
109010
209010
309010
40919
50919
60919
70928
80928
90937
100937
110937
120946
130946
140946
150946
160946
170946
180946
190955
200955
210955
220955
230955
240964
250964
260964
270964
280973
291963
301963
311963

Wind in May

Winds average 4 km/h in May.

Across May, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 06 min at the start of May to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over May. Sunrise moves from 5:51 AM to 5:51 AM, and sunset from 5:55 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:515:55
212.15:515:55
312.15:515:54
412.15:515:54
512.15:515:54
612.15:515:54
712.15:505:54
812.15:505:54
912.15:505:54
1012.15:505:54
1112.15:505:54
1212.15:505:54
1312.15:505:54
1412.15:505:54
1512.15:505:54
1612.15:505:54
1712.15:505:54
1812.15:505:54
1912.15:505:54
2012.15:505:54
2112.15:505:55
2212.15:505:55
2312.15:505:55
2412.15:505:55
2512.15:505:55
2612.15:505:55
2712.15:505:55
2812.15:505:55
2912.15:505:55
3012.15:505:56
3112.15:515:56

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.06 kWh/m².

For context, solar energy here swings from a low near 4.78 kWh/m² to a high of 5.47 kWh/m² in February across the year — May's 5.06 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in May

Is May a good time to visit Ouesso?

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

3.7
Sightseeing
7th-best month of the year
5.2
Beach & pool
6th-best month of the year

May is a weaker month for outdoor sightseeing in Ouesso.

What to pack for Ouesso in May

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

In May, Ouesso sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Ouesso 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 Ouesso peaks around March 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 18UV 14Jul 10UV 9
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar14Extreme
Apr12Extreme
May11Extreme
Jun9Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct13Extreme
Nov10Very high
Dec9Very high

Air quality in Ouesso 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 Ouesso is worst in February — around 43 µg/m³ PM2.5 (poor), about 4.8× the cleanest month (September, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModerateFeb 1342 µg/m³Sep 239 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb43Poor
Mar26Moderate
Apr17Moderate
May14Moderate
Jun20Moderate
Jul23Moderate
Aug18Moderate
Sep9Good
Oct9Good
Nov16Moderate
Dec26Moderate
Location & terrain

Where is Ouesso?

Ouesso sits at 1.6°N, 16.1°E, 348 m above sea level, in Republic of the Congo. The nearest listed city is Pokola, 38 km away.

MakouaNolaImpfondoOwandoYokadoumaBolenge

Topography around Ouesso

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

Within 3 km, the terrain around Ouesso has only modest variations in elevation — a maximum elevation change of 47 m around an average of 346 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 215 m; within 80 km, significant variations in elevation — a maximum elevation change of 366 m.

The land around Ouesso is covered by trees (53%) and artificial surfaces (23%) within 3 km, trees (95%) within 16 km, and trees (99%) within 80 km.

3 km
47 m
16 km
215 m
80 km
366 m
treesgrasslandartificial surfaceswater
May weather nearby: Pokola 38 km · Makoua 185 km · Nola 213 km · Impfondo 223 km · Owando 234 km · Yokadouma 239 km · Berbérati 296 km · Bolenge 300 km

Republic of the Congo travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$2,515
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
46%
of population, 2021
Road deaths
29.7
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Roman Catholic 33%Awakening Churches/Christian Revival 22%Protestant 20%none 11%

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 Ouesso (1.6136°, 16.0517°, elevation 348 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).