Nioki weather in May

In May, Nioki sees average daytime highs of 30°C and overnight lows near 23°C, with 102 mm of rain across 17.4 wet days and about 11.9 hours of daylight. It is the 4th-warmest and 9th-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 15% 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 54 min by month's end. Set against the rest of the year, May is Nioki's 4th-clearest and 11th-windiest month. For the whole year in context, see Nioki's year-round climate.

Daytime high
30°
4th warmest
Overnight low
23°
11th coldest
Rainfall
102 mm
17.4 wet days
Daylight
11 h 54 min
5:49 AM – 5:42 PM
Cloud cover
71%
4th clearest
Wind
4 km/h
11th windiest
Solar energy
4.92 kWh/m²
Travel score
3.9
out of 10

Nioki is is a locality in the Territory of Kutu in the province of Mai-Ndombe in Congo-Kinshasa..

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 Nioki reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°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 on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How May really feels in Nioki

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.

Nioki weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°12919.512.13.6
Feb31° / 23°1351812.13.4
Mar31° / 23°15221.5123.2
Apr31° / 23°15322.411.93.1
May30° / 23°10217.411.93.9
Jun30° / 23°307.311.85.2
Jul30° / 23°225.211.95.3
Aug30° / 23°6013.511.94.3
Sep30° / 23°11420.7123.5
Oct30° / 22°18925.512.13.2
Nov30° / 23°17723.912.13.3
Dec30° / 23°17123.412.23.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 68%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22278
32377
42575
52575
62674
72773
82872
92971
103070
113169
123268
133367
143466
153466
163466
173466
183565
193565
203565
213565
223466
233565
243565
253565
263565
273664
283664
293664
303862
313862

Chance of precipitation in May

Any precipitation

Nioki gets around 102 mm of rain over 17.4 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 56% and peaks near 70% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
170
269
368
467
566
665
764
862
961
1060
1159
1258
1356
1455
1554
1654
1753
1852
1952
2052
2151
2251
2351
2450
2550
2650
2749
2849
2948
3047
3146

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 68% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
106634
206535
306535
406535
506436
606436
706436
806436
906436
1006535
1106535
1206535
1306634
1406634
1506634
1606733
1706733
1806733
1906832
2006832
2106931
2206931
2307030
2407030
2507129
2607228
2707327
2807426
2907525
3007624
3117722

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 4 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
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 54 min at the start of May to 11 h 54 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 5:49 AM to 5:51 AM, and sunset from 5:44 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:495:44
211.95:495:43
311.95:495:43
411.95:495:43
511.95:495:43
611.95:495:43
711.95:495:43
811.95:495:42
911.95:495:42
1011.95:495:42
1111.95:495:42
1211.95:495:42
1311.95:495:42
1411.95:495:42
1511.95:495:42
1611.95:495:42
1711.95:495:42
1811.95:495:42
1911.95:495:42
2011.95:495:42
2111.95:505:42
2211.95:505:42
2311.95:505:42
2411.95:505:42
2511.95:505:42
2611.95:505:42
2711.95:505:42
2811.95:505:42
2911.95:515:42
3011.95:515:42
3111.95:515:42

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.92 kWh/m².

For context, solar energy here swings from a low near 4.91 kWh/m² to a high of 5.44 kWh/m² in February across the year — May's 4.92 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in May

Is May a good time to visit Nioki?

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

3.9
Sightseeing
4th-best month of the year
5.5
Beach & pool
4th-best month of the year

May is a weaker month for outdoor sightseeing in Nioki.

What to pack for Nioki in May

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

In May, Nioki sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Nioki 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 Nioki peaks around March 17 at about 13 (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 13Aug 11UV 6
UV index (midday)Level
Jan12Extreme
Feb13Extreme
Mar13Extreme
Apr13Extreme
May9Very high
Jun7Very high
Jul7High
Aug6High
Sep10Extreme
Oct12Extreme
Nov12Extreme
Dec10Very high

Air quality in Nioki 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 Nioki is worst in August — around 87 µg/m³ PM2.5 (unhealthy), about 6.8× the cleanest month (November, 13 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyModerateAug 1383 µg/m³Nov 1313 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb29Moderate
Mar25Moderate
Apr18Moderate
May27Moderate
Jun46Poor
Jul67Unhealthy
Aug87Unhealthy
Sep40Poor
Oct15Moderate
Nov13Moderate
Dec17Moderate
Location & terrain

Where is Nioki?

Nioki sits at 2.7°S, 17.7°E, 326 m above sea level, in Democratic Republic of the Congo. The nearest listed city is Kutu, 51 km away.

DunguBoloboMossakaGamboma

Topography around Nioki

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

Within 3 km, the terrain around Nioki has only modest variations in elevation — a maximum elevation change of 59 m around an average of 300 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 65 m; within 80 km, only modest variations in elevation — a maximum elevation change of 192 m.

The land around Nioki is covered by trees (31%) and wetland (23%) within 3 km, trees (39%) and grassland (29%) within 16 km, and trees (53%) and grassland (37%) within 80 km.

3 km
59 m
16 km
65 m
80 km
192 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetland
May weather nearby: Kutu 51 km · Bandundu Province 75 km · Mushie 91 km · Inongo 110 km · Dungu 163 km · Bolobo 174 km · Mossaka 194 km · Gamboma 223 km

Democratic Republic of the Congo travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 42% of US
price level, 2025
GDP per capita
$807
2025
Happiness
3.8 / 10
World Happiness, 2025
Safe drinking water
12%
of population, 2024
Road deaths
34.9
per 100k/yr, 2019
Income group
Low
World Bank
English
Very low
EF EPI 400

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 Nioki (-2.7204°, 17.69°, elevation 326 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).