Brazzaville weather in May

In May, Brazzaville sees average daytime highs of 30°C and overnight lows near 23°C, with 73 mm of rain across 14.5 wet days and about 11.8 hours of daylight. It is the 6th-warmest and 8th-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 13% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of May to 11 h 48 min by month's end. Set against the rest of the year, May is Brazzaville's 3rd-clearest and 9th-windiest month. For the whole year in context, see Brazzaville's year-round climate.

Daytime high
30°
6th warmest
Overnight low
23°
9th coldest
Rainfall
73 mm
14.5 wet days
Daylight
11 h 48 min
6:01 AM – 5:49 PM
Cloud cover
69%
3rd clearest
Wind
5 km/h
9th windiest
Solar energy
4.53 kWh/m²
Travel score
4.4
out of 10

Brazzaville is capital of the Republic of the Congo.

Density
3,371/km²
people per km²
Founded
1880

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 Brazzaville reaches about 30°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°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)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203022
213022
223022
233022
243022
253022
263022
273022
283022
292922
302922
312922

How May really feels in Brazzaville

Once humidity and wind are folded in, May averages 30 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
30
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.

Brazzaville weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°11620.912.23.7
Feb30° / 23°10215.712.13.8
Mar31° / 23°10917.9123.5
Apr31° / 23°14021.311.93.2
May30° / 23°7314.511.84.4
Jun29° / 21°41.211.86.6
Jul28° / 20°10.211.86.9
Aug29° / 20°5111.96.3
Sep30° / 22°165125.1
Oct30° / 22°11218.712.13.8
Nov29° / 22°1832512.23.3
Dec29° / 22°15624.912.23.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32674
42674
52872
62872
73070
83070
93268
103367
113466
123664
133763
143862
153862
163961
173961
183961
193961
203961
213961
223961
233961
243961
253961
263862
273961
283862
293862
303763
313763

Chance of precipitation in May

Any precipitation

Brazzaville gets around 73 mm of rain over 14.5 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 47% and peaks near 71% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
171
271
370
469
567
666
765
863
961
1060
1158
1256
1354
1452
1550
1648
1746
1843
1941
2039
2137
2235
2333
2431
2529
2627
2725
2823
2921
3020
3118

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 87% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100982
200982
300982
400982
501972
601972
701972
801972
902962
1002962
1103952
1203961
1314941
1415931
1516921
1617911
1718901
1819891
19110881
20112861
21113851
22115840
23117820
24119800
25121780
26124750
27127720
28130690
29133660
30136630
31140590

Wind in May

Winds average 5 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
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

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

Days shrink by about 6 minutes over May. Sunrise moves from 6:00 AM to 6:03 AM, and sunset from 5:52 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:005:52
211.86:005:51
311.86:005:51
411.86:005:51
511.86:005:51
611.86:005:51
711.86:005:50
811.86:005:50
911.86:005:50
1011.86:015:50
1111.86:015:50
1211.86:015:50
1311.86:015:50
1411.86:015:49
1511.86:015:49
1611.86:015:49
1711.86:015:49
1811.86:015:49
1911.86:015:49
2011.86:015:49
2111.86:015:49
2211.86:025:49
2311.86:025:49
2411.86:025:49
2511.86:025:49
2611.86:025:49
2711.86:025:49
2811.86:035:49
2911.86:035:49
3011.86:035:49
3111.86:035:49

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.53 kWh/m².

For context, solar energy here swings from a low near 4.38 kWh/m² to a high of 5.21 kWh/m² in March across the year — May's 4.53 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in May

Hazard calendar for Brazzaville

In seasonPeak

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

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

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

Is May a good time to visit Brazzaville?

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

4.4
Sightseeing
5th-best month of the year
6.0
Beach & pool
5th-best month of the year

May is a reasonable time to visit Brazzaville for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Brazzaville in May

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

In May, Brazzaville sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Brazzaville in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Brazzaville peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 11 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeMar 17UV 15Aug 11UV 6
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr13Extreme
May9Very high
Jun7High
Jul7High
Aug6High
Sep10Very high
Oct13Extreme
Nov12Extreme
Dec10Very high

Air quality in Brazzaville 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 Brazzaville is worst in June — around 60 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (January, 33 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJun 2259 µg/m³Jan 1433 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb36Poor
Mar36Poor
Apr39Poor
May53Poor
Jun60Unhealthy
Jul59Unhealthy
Aug55Poor
Sep58Unhealthy
Oct45Poor
Nov33Moderate
Dec34Moderate
Location & terrain

Where is Brazzaville?

Brazzaville sits at 4.3°S, 15.3°E, 284 m above sea level, in Republic of the Congo. The nearest listed city is Kinshasa, 8.0 km away.

InkisiMbanza-NgunguMouyondziLoutétéBouansa

Topography around Brazzaville

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

Within 3 km, the terrain around Brazzaville has only modest variations in elevation — a maximum elevation change of 81 m around an average of 285 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 336 m; within 80 km, significant variations in elevation — a maximum elevation change of 573 m.

The land around Brazzaville is covered by artificial surfaces (58%) and water (31%) within 3 km, artificial surfaces (33%) and grassland (21%) within 16 km, and grassland (57%) and trees (31%) within 80 km.

3 km
81 m
16 km
336 m
80 km
573 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Kinshasa 8.0 km · Masina 18 km · Kasangulu 38 km · Inkisi 99 km · Mbanza-Ngungu 120 km · Mouyondzi 153 km · Loutété 159 km · Bouansa 169 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 Brazzaville (-4.2661°, 15.2832°, elevation 284 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).