Guerou weather in May

In May, Guerou sees average daytime highs of 41°C and overnight lows near 29°C, with 1 mm of rain across 0.4 wet days and about 12.8 hours of daylight. It is the 1st-warmest and 7th-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 71% of the time in May, and the air most often feels dry.

Daylight stretches from about 12 h 36 min at the start of May to 12 h 54 min by month's end. Set against the rest of the year, May is Guerou's 4th-clearest and 10th-windiest month. For the whole year in context, see Guerou's year-round climate.

Daytime high
41°
1st warmest
Overnight low
29°
11th coldest
Rainfall
1 mm
0.4 wet days
Daylight
12 h 48 min
6:20 AM – 7:08 PM
Cloud cover
27%
4th clearest
Wind
13 km/h
10th windiest
Solar energy
7.45 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 Guerou reaches about 41°C in the afternoon and slips back to 29°C overnight — a 12°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 about 2°C warmer than April and on par with June.

20°25°30°35°40°45°151015202531
Avg high (°C)Avg low (°C)
14128
24128
34128
44128
54128
64128
74128
84128
94129
104129
114129
124129
134129
144129
154129
164129
174129
184129
194130
204130
214130
224130
234130
244130
254130
264130
274130
284130
294130
304130
314130

How May really feels in Guerou

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.

Guerou weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 17°10.211.17.0
Feb32° / 20°10.211.45.2
Mar36° / 23°00.111.92.9
Apr39° / 26°0012.40.6
May41° / 29°10.412.80.0
Jun41° / 30°40.9130.1
Jul37° / 28°193.312.91.6
Aug35° / 27°618.212.62.5
Sep37° / 27°417.112.11.9
Oct38° / 27°112.411.61.5
Nov34° / 23°10.211.23.6
Dec30° / 19°20.3116.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18614
28812
38812
48812
58812
68812
78812
88812
98812
108713
118614
128614
138614
148515
158515
168416
178317
188317
198218
208119
218119
228119
238119
248119
258119
268119
278119
288119
298119
308218
318218

Chance of precipitation in May

Any precipitation

Guerou gets around 1 mm of rain over 0.4 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 1% and peaks near 2% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
191
201
212
222
232
242
252
262
272
282
292
302
312

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 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1963100
2963100
3963100
4954100
5944200
6935200
7935200
8926200
9916210
10897310
11897310
12888310
13879310
14879310
15869320
168410420
178410420
188311420
198311420
208311420
218311420
228212420
238212420
248212420
258212420
268013520
277913521
287814521
297714621
307615621
317516621

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 36 min at the start of May to 12 h 54 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 6:27 AM to 6:17 AM, and sunset from 7:04 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:277:04
212.66:277:04
312.66:267:04
412.66:267:04
512.76:257:05
612.76:257:05
712.76:247:05
812.76:247:06
912.76:237:06
1012.76:237:06
1112.76:227:07
1212.86:227:07
1312.86:227:07
1412.86:217:08
1512.86:217:08
1612.86:207:08
1712.86:207:09
1812.86:207:09
1912.86:207:09
2012.86:197:10
2112.86:197:10
2212.96:197:10
2312.96:197:11
2412.96:187:11
2512.96:187:11
2612.96:187:12
2712.96:187:12
2812.96:187:13
2912.96:187:13
3012.96:187:13
3112.96:177:14

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.45 kWh/m².

For context, solar energy here swings from a low near 5.05 kWh/m² to a high of 7.46 kWh/m² in April across the year — May's 7.45 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.5Intense
27.5Intense
37.5Intense
47.5Intense
57.5Intense
67.5Intense
77.5Intense
87.5Intense
97.5Intense
107.5Intense
117.5Intense
127.5Intense
137.5Intense
147.5Intense
157.4Intense
167.4Intense
177.4Intense
187.4Intense
197.4Intense
207.4Intense
217.4Intense
227.4Intense
237.4Intense
247.4Intense
257.4Intense
267.4Intense
277.4Intense
287.4Intense
297.4Intense
307.4Intense
317.4Intense
Planning a trip in May

Hazard calendar for Guerou

In seasonPeak

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

Guerou sees dust haze year-round, heaviest in June.

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

Is May a good time to visit Guerou?

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

0.0
Sightseeing
12th-best month of the year
2.3
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Guerou.

What to pack for Guerou in May

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

In May, Guerou sees daytime highs around 41°C and nights near 29°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Guerou 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 Guerou peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 highExtremeExtremeVery highMar 18UV 13Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb12Extreme
Mar13Extreme
Apr12Extreme
May11Extreme
Jun10Very high
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct9Very high
Nov8Very high
Dec7High

Air quality in Guerou 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 Guerou is worst in January — around 120 µg/m³ PM2.5 (unhealthy), about 2.7× the cleanest month (September, 45 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyJan 16118 µg/m³Sep 1145 µg/m³
PM2.5 (µg/m³)Level
Jan120Unhealthy
Feb106Unhealthy
Mar77Unhealthy
Apr61Unhealthy
May68Unhealthy
Jun91Unhealthy
Jul74Unhealthy
Aug47Poor
Sep45Poor
Oct57Unhealthy
Nov60Unhealthy
Dec108Unhealthy
Location & terrain

Where is Guerou?

Guerou sits at 17.1°N, 12.0°W, 183 m above sea level, in Mauritania. The nearest listed city is Elghabra, 83 km away.

ElghabraKiffaMagṭa‘ LaḥjarKaédiEl ’AyoûnAlegMatamṬinṭâne

Topography around Guerou

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

Within 3 km, the terrain around Guerou has only modest variations in elevation — a maximum elevation change of 236 m around an average of 183 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 399 m; within 80 km, significant variations in elevation — a maximum elevation change of 594 m.

The land around Guerou is covered by bare terrain (56%) and grassland (42%) within 3 km, bare terrain (51%) and grassland (47%) within 16 km, and bare terrain (64%) and grassland (35%) within 80 km.

3 km
236 m
16 km
399 m
80 km
594 m
treesshrubsgrasslandartificial surfacesbare terrain
May weather nearby: Elghabra 83 km · Kiffa 85 km · Magṭa‘ Laḥjar 122 km · Kaédi 187 km · El ’Ayoûn 192 km · Aleg 199 km · Matam 205 km · Ṭinṭâne 213 km

Mauritania travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type C / E / F
220 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$2,198
2025
Happiness
4.5 / 10
World Happiness, 2025
Homicide rate
1
per 100k, 2020
Road deaths
25.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Muslim 100%

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 Guerou (17.0775°, -12.0387°, elevation 183 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).