Diéma weather in May

In May, Diéma sees average daytime highs of 41°C and overnight lows near 28°C, with 9 mm of rain across 2.4 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 41°C through the month. The sky is clear or mostly clear about 51% 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 Diéma's 7th-clearest and 9th-windiest month. For the whole year in context, see Diéma's year-round climate.

Daytime high
41°
1st warmest
Overnight low
28°
12th coldest
Rainfall
9 mm
2.4 wet days
Daylight
12 h 42 min
6:13 AM – 6:53 PM
Cloud cover
44%
7th clearest
Wind
10 km/h
9th windiest
Solar energy
7 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 41°C through the month.

A typical May day in Diéma reaches about 41°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 38°C and 43°C. Set against its neighbours, May runs on par with April and about 2°C warmer than June.

20°25°30°35°40°45°151015202531
Avg high (°C)Avg low (°C)
14128
24128
34128
44128
54128
64128
74128
84128
94128
104128
114128
124128
134128
144128
154128
164128
174128
184128
194128
204128
214128
224128
234128
244128
254028
264028
274028
284028
294028
304028
314028

How May really feels in Diéma

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.

Diéma 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°10.211.25.6
Feb34° / 20°00.111.53.7
Mar38° / 23°10.211.91.5
Apr40° / 26°10.512.30.0
May41° / 28°92.412.70.0
Jun39° / 28°337.512.80.8
Jul34° / 25°11114.812.82.8
Aug31° / 24°18518.512.53.4
Sep33° / 24°1121412.13.3
Oct36° / 23°305.411.72.3
Nov35° / 20°10.211.32.9
Dec32° / 18°00.111.24.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27228
37228
47228
57228
67129
77129
87129
97030
107030
117030
126931
136931
146733
156733
166634
176535
186535
196436
206436
216337
226337
236337
246337
256337
266337
276337
286238
296238
306337
316337

Chance of precipitation in May

Any precipitation

Diéma gets around 9 mm of rain over 2.4 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 8% and peaks near 15% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
14
24
34
44
54
65
75
85
96
106
117
127
138
148
159
169
179
1810
1910
2010
2110
2210
2310
2411
2511
2611
2712
2812
2913
3014
3115

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
17512940
273121050
372131050
471131060
569141070
668141170
766151180
863161290
962171290
10591813100
11571914100
12542015110
13502116121
14492116121
15472217131
16452218131
17432319141
18422319151
19412320152
20392320162
21382221162
22382221172
23372221182
24362122192
25352022203
26352022213
27341922223
28331822234
29321822254
30311722265
31291622276

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 6:10 AM, and sunset from 6:49 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:196:49
212.56:186:50
312.56:186:50
412.56:176:50
512.66:176:50
612.66:166:51
712.66:166:51
812.66:156:51
912.66:156:51
1012.66:156:52
1112.66:146:52
1212.66:146:52
1312.66:146:52
1412.76:136:53
1512.76:136:53
1612.76:136:53
1712.76:136:53
1812.76:126:54
1912.76:126:54
2012.76:126:54
2112.76:126:55
2212.76:116:55
2312.76:116:55
2412.76:116:56
2512.76:116:56
2612.86:116:56
2712.86:116:57
2812.86:116:57
2912.86:116:57
3012.86:116:58
3112.86:106:58

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7 kWh/m².

For context, solar energy here swings from a low near 5.27 kWh/m² to a high of 7.23 kWh/m² in April across the year — May's 7 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.2Intense
47.2Intense
57.2Intense
67.1Intense
77.1Intense
87.1Intense
97.1Intense
107.1Intense
117.1Intense
127.0Intense
137.0Intense
147.0Intense
157.0Intense
167.0Intense
177.0Intense
186.9Intense
196.9Intense
206.9Intense
216.9Intense
226.9Intense
236.9Intense
246.9Intense
256.9Intense
266.9Intense
276.9Intense
286.9Intense
296.8Intense
306.8Intense
316.8Intense
Planning a trip in May

Hazard calendar for Diéma

In seasonPeak

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

Diéma sees seasonal dust haze (February–October), heaviest in June.

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

Is May a good time to visit Diéma?

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
2.4
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Diéma.

What to pack for Diéma in May

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

In May, Diéma sees daytime highs around 41°C and nights near 28°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Diéma 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 Diéma peaks around August 17 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 highAug 17UV 13Dec 18UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar13Extreme
Apr11Extreme
May11Extreme
Jun10Very high
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov9Very high
Dec7High

Air quality in Diéma 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 Diéma is worst in February — around 67 µg/m³ PM2.5 (unhealthy), about 4.4× the cleanest month (August, 15 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorFeb 1867 µg/m³Aug 2016 µg/m³
PM2.5 (µg/m³)Level
Jan58Unhealthy
Feb67Unhealthy
Mar64Unhealthy
Apr52Poor
May46Poor
Jun44Poor
Jul24Moderate
Aug15Moderate
Sep19Moderate
Oct47Poor
Nov54Poor
Dec54Poor
Location & terrain

Where is Diéma?

Diéma sits at 14.5°N, 9.2°W, 255 m above sea level, in Mali. The nearest listed city is Nioro, 88 km away.

MahinaKolokaniKitaBafoulabéNaraBanambaTembedgha

Topography around Diéma

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

Within 3 km, the terrain around Diéma has only modest variations in elevation — a maximum elevation change of 19 m around an average of 254 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 70 m; within 80 km, only modest variations in elevation — a maximum elevation change of 243 m.

The land around Diéma is covered by cropland (60%) and grassland (27%) within 3 km, cropland (59%) and grassland (34%) within 16 km, and grassland (58%) and cropland (23%) within 80 km.

3 km
19 m
16 km
70 m
80 km
243 m
shrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Nioro 88 km · Mahina 121 km · Kolokani 165 km · Kita 170 km · Bafoulabé 195 km · Nara 216 km · Banamba 218 km · Tembedgha 218 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 Diéma (14.54°, -9.1921°, elevation 255 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).