Aïn Oussera weather in May

In May, Aïn Oussera sees average daytime highs of 27°C and overnight lows near 14°C, with 25 mm of rain across 4.6 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 25°C in the first days to 30°C by the end. The sky is clear or mostly clear about 52% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of May to 14 h 12 min by month's end. Set against the rest of the year, May is Aïn Oussera's 6th-clearest and 4th-windiest month. For the whole year in context, see Aïn Oussera's year-round climate.

Daytime high
27°
5th warmest
Overnight low
14°
8th coldest
Rainfall
25 mm
4.6 wet days
Daylight
13 h 54 min
5:49 AM – 7:40 PM
Cloud cover
42%
6th clearest
Wind
12 km/h
4th windiest
Solar energy
7.12 kWh/m²
Travel score
7.3
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 25°C in the first days to 30°C by the end.

A typical May day in Aïn Oussera reaches about 27°C in the afternoon and slips back to 14°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 34°C. Set against its neighbours, May runs about 5°C warmer than April and about 6°C cooler than June.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12411
22411
32512
42512
52512
62512
72612
82613
92613
102613
112613
122713
132713
142714
152714
162714
172714
182814
192814
202815
212815
222815
232915
242915
252915
262916
272916
283016
293016
303016
313016

How May really feels in Aïn Oussera

Once humidity and wind are folded in, May averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Aïn Oussera weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan12° / 214.99.93.8
Feb14° / 184.810.74.8
Mar18° / 244.611.76.8
Apr22° / 275.112.97.6
May27° / 14°254.613.87.3
Jun33° / 19°102.114.34.2
Jul37° / 23°41.214.21.7
Aug36° / 22°71.713.32.4
Sep30° / 17°224.112.25.8
Oct24° / 13°234.311.17.9
Nov17° / 194.310.16.3
Dec13° / 204.69.64.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% 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 32%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26733
36733
46733
56733
66733
76634
86634
96634
106535
116634
126634
136634
146634
156634
166733
176733
186832
196832
206931
216931
226931
237030
247030
257129
267129
277228
287228
297228
307426
317426

Chance of precipitation in May

Any precipitation

Aïn Oussera gets around 25 mm of rain over 4.6 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 14% and peaks near 19% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
119
218
318
417
517
616
715
815
915
1014
1114
1214
1313
1413
1513
1614
1714
1814
1914
2014
2114
2214
2314
2414
2514
2614
2713
2813
2913
3012
3112

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69820
79820
89820
99820
109730
119730
129730
139730
149640
159640
169640
179550
189550
199550
209460
219460
229460
239370
249370
259370
269280
279280
289280
299181
309181
319181

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 24 min at the start of May to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over May. Sunrise moves from 6:03 AM to 5:40 AM, and sunset from 7:28 PM to 7:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:037:28
213.46:027:29
313.56:017:30
413.56:007:31
513.55:597:31
613.65:587:32
713.65:577:33
813.65:567:34
913.75:557:35
1013.75:547:36
1113.75:537:36
1213.85:527:37
1313.85:517:38
1413.85:507:39
1513.85:507:40
1613.95:497:40
1713.95:487:41
1813.95:477:42
1913.95:477:43
2014.05:467:44
2114.05:457:44
2214.05:457:45
2314.05:447:46
2414.15:437:47
2514.15:437:47
2614.15:427:48
2714.15:427:49
2814.15:417:50
2914.25:417:50
3014.25:407:51
3114.25:407:52

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.12 kWh/m².

For context, solar energy here swings from a low near 2.51 kWh/m² to a high of 7.73 kWh/m² in June across the year — May's 7.12 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.9Intense
56.9Intense
66.9Intense
77.0Intense
87.0Intense
97.0Intense
107.0Intense
117.1Intense
127.1Intense
137.1Intense
147.1Intense
157.1Intense
167.1Intense
177.2Intense
187.2Intense
197.2Intense
207.2Intense
217.2Intense
227.2Intense
237.2Intense
247.3Intense
257.3Intense
267.3Intense
277.3Intense
287.3Intense
297.3Intense
307.4Intense
317.4Intense
Planning a trip in May

Hazard calendar for Aïn Oussera

In seasonPeak

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

Aïn Oussera sees seasonal dust haze (April–September), heaviest in July.

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

Is May a good time to visit Aïn Oussera?

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

7.3
Sightseeing
3rd-best month of the year
7.7
Beach & pool
2nd-best month of the year

May is one of the better times to visit Aïn Oussera for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Aïn Oussera in May

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

In May, Aïn Oussera sees daytime highs around 27°C and nights near 14°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Aïn Oussera 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 Aïn Oussera peaks around June 22 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJun 22UV 10Dec 19UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar7High
Apr8Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep8Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Aïn Oussera 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 Aïn Oussera is worst in September — around 31 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1231 µg/m³Dec 2314 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb18Moderate
Mar25Moderate
Apr28Moderate
May27Moderate
Jun30Moderate
Jul29Moderate
Aug29Moderate
Sep31Moderate
Oct22Moderate
Nov15Moderate
Dec14Moderate
Location & terrain

Where is Aïn Oussera?

Aïn Oussera sits at 35.5°N, 2.9°E, 685 m above sea level, in Algeria. The nearest listed city is Birine, 35 km away.

Topography around Aïn Oussera

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

Within 3 km, the terrain around Aïn Oussera has only modest variations in elevation — a maximum elevation change of 60 m around an average of 688 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 177 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,364 m.

The land around Aïn Oussera is covered by bare terrain (46%) and artificial surfaces (29%) within 3 km, bare terrain (44%), grassland (28%) and cropland (26%) within 16 km, and grassland (36%), bare terrain (35%) and cropland (25%) within 80 km.

3 km
60 m
16 km
177 m
80 km
1,364 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Birine 35 km · Hassi Bahbah 44 km · Ksar el Boukhari 51 km · Ksar Chellala 60 km · Chellalat el Adhaouara 71 km · Berrouaghia 76 km · Dar Chioukh 81 km · Médéa 91 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 Aïn Oussera (35.4514°, 2.9058°, elevation 685 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).