In Salah weather in May

In May, In Salah sees average daytime highs of 38°C and overnight lows near 24°C, with 1 mm of rain across 0.1 wet days and about 13.3 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 36°C in the first days to 40°C by the end. 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 13 hours at the start of May to 13 h 36 min by month's end. Set against the rest of the year, May is In Salah's 12th-clearest and 3rd-windiest month. For the whole year in context, see In Salah's year-round climate.

Daytime high
38°
5th warmest
Overnight low
24°
8th coldest
Rainfall
1 mm
0.1 wet days
Daylight
13 h 18 min
6:06 AM – 7:26 PM
Cloud cover
27%
12th clearest
Wind
20 km/h
3rd windiest
Solar energy
7.76 kWh/m²
Travel score
1.3
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 36°C in the first days to 40°C by the end.

A typical May day in In Salah reaches about 38°C in the afternoon and slips back to 24°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 34°C and 43°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

20°30°40°151015202531
Avg high (°C)Avg low (°C)
13621
23621
33621
43621
53622
63722
73722
83722
93722
103723
113723
123823
133823
143823
153824
163824
173824
183924
193924
203924
213924
223925
233925
243925
253925
264025
274025
284026
294026
304026
314026

How May really feels in In Salah

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
10 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.

In Salah weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 20.410.58.7
Feb24° / 10°10.4119.1
Mar28° / 14°20.411.87.8
Apr33° / 18°20.412.64.4
May38° / 24°10.113.31.3
Jun43° / 28°0013.70.0
Jul45° / 30°0013.50.0
Aug44° / 30°00130.0
Sep40° / 27°10.112.20.3
Oct34° / 21°10.411.33.8
Nov27° / 13°10.310.78.4
Dec22° / 20.310.38.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 9% of May, with mostly cloudy or overcast conditions the remaining 20%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18119
28119
38119
48119
58119
68119
78119
88119
98218
108119
118119
128119
137921
147921
157921
167921
177921
187921
197822
207822
217822
227921
237921
247921
257921
268020
278020
288119
298119
308317
318317

Chance of precipitation in May

Any precipitation

In Salah gets around 1 mm of rain over 0.1 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 0% and peaks near 0% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
11991
12991
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
291000
301000
311000

Wind in May

Winds average 20 km/h in May.

Across May, daily wind ranges from about 19 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
720light breeze
820light breeze
920light breeze
1020light breeze
1120light breeze
1220light breeze
1320light breeze
1420light breeze
1520light breeze
1620light breeze
1720light breeze
1820light breeze
1920light breeze
2020light breeze
2120light breeze
2220light breeze
2320light breeze
2420light breeze
2520light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 hours at the start of May to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over May. Sunrise moves from 6:17 AM to 6:00 AM, and sunset from 7:18 PM to 7:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:177:18
213.06:167:18
313.16:157:19
413.16:147:20
513.16:147:20
613.16:137:21
713.26:127:21
813.26:117:22
913.26:117:22
1013.26:107:23
1113.26:097:24
1213.36:097:24
1313.36:087:25
1413.36:077:25
1513.36:077:26
1613.36:067:26
1713.46:067:27
1813.46:057:28
1913.46:057:28
2013.46:047:29
2113.46:047:29
2213.46:037:30
2313.56:037:30
2413.56:027:31
2513.56:027:32
2613.56:027:32
2713.56:017:33
2813.56:017:33
2913.56:017:34
3013.66:017:34
3113.66:007:35

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.76 kWh/m².

For context, solar energy here swings from a low near 4.12 kWh/m² to a high of 7.96 kWh/m² in June across the year — May's 7.76 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.6Intense
27.7Intense
37.7Intense
47.7Intense
57.7Intense
67.7Intense
77.7Intense
87.7Intense
97.7Intense
107.7Intense
117.8Intense
127.8Intense
137.8Intense
147.8Intense
157.8Intense
167.8Intense
177.8Intense
187.8Intense
197.8Intense
207.8Intense
217.8Intense
227.8Intense
237.8Intense
247.8Intense
257.8Intense
267.8Intense
277.8Intense
287.8Intense
297.8Intense
307.8Intense
317.8Intense
Planning a trip in May

Hazard calendar for In Salah

In seasonPeak

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

In Salah 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 In Salah?

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

1.3
Sightseeing
8th-best month of the year
4.6
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in In Salah.

What to pack for In Salah in May

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

In May, In Salah sees daytime highs around 38°C and nights near 24°C. Pack light clothes and sun protection.

light clothessun protection

UV index in In Salah 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 In Salah peaks around July 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 12UV 10Dec 17UV 4
UV index (midday)Level
Jan5High
Feb7High
Mar9Very high
Apr9Very high
May10Extreme
Jun10Very high
Jul11Extreme
Aug8Very high
Sep10Very high
Oct7High
Nov5High
Dec4Moderate

Air quality in In Salah 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 In Salah is worst in July — around 106 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (November, 64 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyJul 17104 µg/m³Nov 1567 µg/m³
PM2.5 (µg/m³)Level
Jan80Unhealthy
Feb104Unhealthy
Mar93Unhealthy
Apr97Unhealthy
May103Unhealthy
Jun91Unhealthy
Jul106Unhealthy
Aug93Unhealthy
Sep87Unhealthy
Oct87Unhealthy
Nov64Unhealthy
Dec92Unhealthy
Location & terrain

Where is In Salah?

In Salah sits at 27.2°N, 2.5°E, 293 m above sea level, in Algeria. The nearest listed city is Aoulef, 141 km away.

AoulefRegganeAdrarTimimounEl MeniaMetlili ChaambaTamanghassetRouissat

Topography around In Salah

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

Within 3 km, the terrain around In Salah has only modest variations in elevation — a maximum elevation change of 37 m around an average of 283 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 166 m; within 80 km, significant variations in elevation — a maximum elevation change of 519 m.

The land around In Salah is covered by bare terrain (76%) within 3 km, bare terrain (96%) within 16 km, and bare terrain (100%) within 80 km.

3 km
37 m
16 km
166 m
80 km
519 m
treesshrubscroplandartificial surfacesbare terrain
May weather nearby: Aoulef 141 km · Reggane 235 km · Adrar 284 km · Timimoun 318 km · El Menia 378 km · Metlili Chaamba 575 km · Tamanghasset 579 km · Rouissat 594 km

Algeria travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 33% of US
price level, 2025
GDP per capita
$6,051
2025
Happiness
5.7 / 10
World Happiness, 2025
Safe drinking water
69%
of population, 2024
Homicide rate
1.2
per 100k, 2023
Road deaths
20.9
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 468
Religion
Muslim 99%

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 In Salah (27.1968°, 2.4791°, elevation 293 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).