Rouissat weather in May

In May, Rouissat sees average daytime highs of 34°C and overnight lows near 21°C, with 2 mm of rain across 0.3 wet days and about 13.6 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 32°C in the first days to 36°C by the end. The sky is clear or mostly clear about 70% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 12 min at the start of May to 13 h 54 min by month's end. Set against the rest of the year, May is Rouissat's 11th-clearest and 1st-windiest month. For the whole year in context, see Rouissat's year-round climate.

Daytime high
34°
5th warmest
Overnight low
21°
8th coldest
Rainfall
2 mm
0.3 wet days
Daylight
13 h 36 min
5:46 AM – 7:24 PM
Cloud cover
27%
11th clearest
Wind
17 km/h
1st windiest
Solar energy
7.66 kWh/m²
Travel score
4.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 32°C in the first days to 36°C by the end.

A typical May day in Rouissat reaches about 34°C in the afternoon and slips back to 21°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 40°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
13119
23219
33219
43219
53219
63219
73320
83320
93320
103320
113320
123320
133421
143421
153421
163421
173421
183421
193422
203422
213522
223522
233522
243522
253522
263523
273623
283623
293623
303623
313624

How May really feels in Rouissat

Once humidity and wind are folded in, May averages 27 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
27
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.

Rouissat 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
Jan18° / 71.210.17.5
Feb20° / 30.810.88.3
Mar24° / 12°5111.89.0
Apr29° / 16°40.712.87.4
May34° / 21°20.313.64.1
Jun39° / 26°00.1140.9
Jul42° / 28°0013.90.0
Aug41° / 28°0013.20.0
Sep36° / 24°30.712.22.4
Oct30° / 18°40.611.26.4
Nov23° / 11°40.910.48.8
Dec18° / 41.1107.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 70% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 19%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18317
28317
38317
48317
58317
68317
78317
88218
98218
108218
118218
128218
138218
148020
158020
168020
178020
187921
197921
207921
217921
227921
237921
248020
258020
268020
278119
288119
298218
308218
318317

Chance of precipitation in May

Any precipitation

Rouissat gets around 2 mm of rain over 0.3 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 (%)
12
22
32
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
191
201
211
221
231
241
251
261
271
281
291
301
311

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 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19820
29820
39820
49820
59910
69910
79910
89910
99910
109910
119910
129910
139820
149820
159820
169820
179730
189730
199730
209631
219541
229541
239541
249451
259451
269451
279451
289451
299361
309361
319361

Wind in May

Winds average 17 km/h in May, the windiest month of the year.

Across May, daily wind ranges from about 17 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 12 min at the start of May to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:59 AM to 5:39 AM, and sunset from 7:13 PM to 7:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:597:13
213.35:587:14
313.35:577:14
413.35:567:15
513.35:557:16
613.45:547:16
713.45:537:17
813.45:527:18
913.55:517:19
1013.55:517:19
1113.55:507:20
1213.55:497:21
1313.65:487:21
1413.65:477:22
1513.65:477:23
1613.65:467:24
1713.65:457:24
1813.75:457:25
1913.75:447:26
2013.75:447:26
2113.75:437:27
2213.85:427:28
2313.85:427:28
2413.85:417:29
2513.85:417:30
2613.85:407:30
2713.85:407:31
2813.95:407:32
2913.95:397:32
3013.95:397:33
3113.95:397:33

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.66 kWh/m².

For context, solar energy here swings from a low near 3.34 kWh/m² to a high of 7.99 kWh/m² in June across the year — May's 7.66 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.5Intense
27.5Intense
37.6Intense
47.6Intense
57.6Intense
67.6Intense
77.6Intense
87.6Intense
97.6Intense
107.7Intense
117.7Intense
127.7Intense
137.7Intense
147.7Intense
157.7Intense
167.7Intense
177.7Intense
187.7Intense
197.7Intense
207.7Intense
217.7Intense
227.7Intense
237.7Intense
247.7Intense
257.7Intense
267.7Intense
277.7Intense
287.8Intense
297.8Intense
307.8Intense
317.8Intense
Planning a trip in May

Hazard calendar for Rouissat

In seasonPeak

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

Rouissat sees seasonal dust haze (March–October), heaviest in June.

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

Is May a good time to visit Rouissat?

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

4.1
Sightseeing
8th-best month of the year
7.6
Beach & pool
3rd-best month of the year

May is a reasonable time to visit Rouissat for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Rouissat in May

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

In May, Rouissat sees daytime highs around 34°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Rouissat in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rouissat peaks around June 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighHighVery highExtremeVery highHighModerateJun 20UV 11Dec 19UV 3
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7Very high
Apr6High
May8Very high
Jun11Extreme
Jul10Very high
Aug8Very high
Sep7High
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Rouissat 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 Rouissat is worst in April — around 102 µg/m³ PM2.5 (unhealthy), about 2.5× the cleanest month (December, 40 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorApr 19100 µg/m³Dec 1240 µg/m³
PM2.5 (µg/m³)Level
Jan46Poor
Feb58Unhealthy
Mar80Unhealthy
Apr102Unhealthy
May92Unhealthy
Jun89Unhealthy
Jul60Unhealthy
Aug59Unhealthy
Sep61Unhealthy
Oct49Poor
Nov42Poor
Dec40Poor
Location & terrain

Where is Rouissat?

Rouissat sits at 31.9°N, 5.4°E, 138 m above sea level, in Algeria. The nearest listed city is Ouargla, 4.0 km away.

GueraraTouggourtTebesbestMegarineTaïbet

Topography around Rouissat

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

Within 3 km, the terrain around Rouissat has only modest variations in elevation — a maximum elevation change of 31 m around an average of 137 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 127 m; within 80 km, only modest variations in elevation — a maximum elevation change of 194 m.

The land around Rouissat is covered by bare terrain (52%) and artificial surfaces (32%) within 3 km, bare terrain (89%) within 16 km, and bare terrain (99%) within 80 km.

3 km
31 m
16 km
127 m
80 km
194 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Ouargla 4.0 km · Hassi Messaoud 73 km · El Hadjira 78 km · Guerara 125 km · Touggourt 148 km · Tebesbest 149 km · Megarine 157 km · Taïbet 162 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 Rouissat (31.9243°, 5.3502°, elevation 138 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).