Nioro weather in May

In May, Nioro sees average daytime highs of 42°C and overnight lows near 28°C, with 5 mm of rain across 1.2 wet days and about 12.7 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 42°C through the month. The sky is clear or mostly clear about 57% of the time in May, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 48 min by month's end. Set against the rest of the year, May is Nioro's 4th-clearest and 8th-windiest month. For the whole year in context, see Nioro's year-round climate.

Daytime high
42°
1st warmest
Overnight low
28°
11th coldest
Rainfall
5 mm
1.2 wet days
Daylight
12 h 42 min
6:13 AM – 6:56 PM
Cloud cover
39%
4th clearest
Wind
11 km/h
8th windiest
Solar energy
7.14 kWh/m²
Travel score
0.0
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 42°C through the month.

A typical May day in Nioro reaches about 42°C in the afternoon and slips back to 28°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 39°C and 44°C. Set against its neighbours, May runs about 1°C warmer than April and about 2°C warmer than June.

20°25°30°35°40°45°151015202531
Avg high (°C)Avg low (°C)
14227
24228
34228
44228
54228
64228
74228
84228
94228
104228
114228
124228
134229
144229
154229
164229
174229
184229
194229
204229
214229
224229
234229
244129
254129
264129
274129
284129
294129
304129
314129

How May really feels in Nioro

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
31 feel dangerously hot (≥ 39°C)
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.

Nioro weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 17°10.211.25.8
Feb34° / 19°0011.53.9
Mar38° / 22°00.111.91.6
Apr41° / 26°10.312.30.0
May42° / 28°51.212.70.0
Jun40° / 29°164.112.90.2
Jul36° / 26°6810.312.82.2
Aug33° / 25°14514.512.53.2
Sep34° / 25°7610.412.12.8
Oct38° / 24°173.911.71.5
Nov36° / 21°10.211.32.6
Dec32° / 17°00.111.15.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17624
27723
37723
47723
57624
67624
77624
87525
97525
107426
117426
127426
137327
147228
157228
167228
177129
187030
197030
206931
216931
226931
236832
246832
256832
266832
276832
286832
296832
306931
316931

Chance of precipitation in May

Any precipitation

Nioro gets around 5 mm of rain over 1.2 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 4% and peaks near 8% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
12
22
32
42
52
63
73
83
93
103
113
123
133
143
153
164
174
184
194
204
215
225
235
245
256
266
277
287
298
308
318

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1847720
2847720
3827830
4818830
5808930
67981030
77891030
87791130
975101230
1074101240
1172111340
1271121340
1369131440
1467131541
1566141541
1664151551
1763151651
1862161651
1961161661
2060161662
2158171672
2257171772
2356171782
2456171782
2554171892
26531718102
27521718112
28501719122
29491719132
30471720142
31451721152

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over May. Sunrise moves from 6:19 AM to 6:11 AM, and sunset from 6:52 PM to 7:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:196:52
212.66:196:52
312.66:186:52
412.66:186:52
512.66:186:53
612.66:176:53
712.66:176:53
812.66:166:53
912.66:166:54
1012.66:156:54
1112.76:156:54
1212.76:156:55
1312.76:146:55
1412.76:146:55
1512.76:146:55
1612.76:136:56
1712.76:136:56
1812.76:136:56
1912.76:136:57
2012.76:126:57
2112.86:126:57
2212.86:126:58
2312.86:126:58
2412.86:126:58
2512.86:116:59
2612.86:116:59
2712.86:116:59
2812.86:117:00
2912.86:117:00
3012.86:117:00
3112.86:117:01

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.14 kWh/m².

For context, solar energy here swings from a low near 5.22 kWh/m² to a high of 7.31 kWh/m² in April across the year — May's 7.14 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.3Intense
47.3Intense
57.3Intense
67.3Intense
77.2Intense
87.2Intense
97.2Intense
107.2Intense
117.2Intense
127.2Intense
137.2Intense
147.2Intense
157.1Intense
167.1Intense
177.1Intense
187.1Intense
197.1Intense
207.1Intense
217.1Intense
227.1Intense
237.1Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
317.0Intense
Planning a trip in May

Hazard calendar for Nioro

In seasonPeak

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

Nioro sees seasonal dust haze (January–October), heaviest in June.

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

Is May a good time to visit Nioro?

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

0.0
Sightseeing
11th-best month of the year
1.9
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Nioro.

What to pack for Nioro in May

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

In May, Nioro sees daytime highs around 42°C and nights near 28°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Nioro in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nioro peaks around March 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 21UV 13Dec 18UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May10Extreme
Jun10Extreme
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov9Very high
Dec7Very high

Air quality in Nioro 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 Nioro is worst in February — around 77 µg/m³ PM2.5 (unhealthy), about 4.5× the cleanest month (August, 17 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyFeb 1476 µg/m³Aug 2118 µg/m³
PM2.5 (µg/m³)Level
Jan72Unhealthy
Feb77Unhealthy
Mar70Unhealthy
Apr58Unhealthy
May53Poor
Jun53Poor
Jul28Moderate
Aug17Moderate
Sep20Moderate
Oct39Poor
Nov42Poor
Dec65Unhealthy
Location & terrain

Where is Nioro?

Nioro sits at 15.2°N, 9.6°W, 215 m above sea level, in Mali. The nearest listed city is Diéma, 88 km away.

ṬinṭâneMahinaAyoun El AtrousEl ’AyoûnTembedghaBafoulabéKayes

Topography around Nioro

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

Within 3 km, the terrain around Nioro has only modest variations in elevation — a maximum elevation change of 55 m around an average of 237 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 134 m; within 80 km, significant variations in elevation — a maximum elevation change of 281 m.

The land around Nioro is covered by grassland (53%) and bare terrain (20%) within 3 km, grassland (79%) within 16 km, and grassland (84%) within 80 km.

3 km
55 m
16 km
134 m
80 km
281 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Diéma 88 km · Ṭinṭâne 144 km · Mahina 157 km · Ayoun El Atrous 159 km · El ’Ayoûn 174 km · Tembedgha 189 km · Bafoulabé 207 km · Kayes 217 km

Mali travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$1,193
2025
Happiness
4.6 / 10
World Happiness, 2025
Road deaths
22.7
per 100k/yr, 2019
Income group
Low
World Bank
English
Very low
EF EPI 408
Religion
Muslim 94%Christian 3%none 3%animist 1%

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 Nioro (15.2307°, -9.5936°, elevation 215 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).