Boû Arfa weather in May

In May, Boû Arfa sees average daytime highs of 22°C and overnight lows near 14°C, with 54 mm of rain across 6.8 wet days and about 13.9 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 50% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of May to 14 h 18 min by month's end. Set against the rest of the year, May is Boû Arfa's 5th-clearest and 7th-windiest month. For the whole year in context, see Boû Arfa's year-round climate.

Daytime high
22°
6th warmest
Overnight low
14°
7th coldest
Rainfall
54 mm
6.8 wet days
Daylight
13 h 54 min
5:47 AM – 7:43 PM
Cloud cover
44%
5th clearest
Wind
9 km/h
7th windiest
Solar energy
6.82 kWh/m²
Travel score
7.4
out of 10

Boû Arfa is settlement in Algeria.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 23°C by the end.

A typical May day in Boû Arfa reaches about 22°C in the afternoon and slips back to 14°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°C. Set against its neighbours, May runs about 3°C warmer than April and about 4°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12012
22012
32012
42013
52013
62113
72113
82113
92113
102113
112113
122114
132114
142214
152214
162214
172214
182214
192214
202214
212215
222215
232315
242315
252315
262315
272315
282315
292316
302416
312416

Boû Arfa weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan14° / 7910.80.39.84.0
Feb14° / 679.90.810.64.2
Mar16° / 709.70.311.75.3
Apr18° / 11°709.6012.96.2
May22° / 14°546.8013.97.4
Jun26° / 18°112.5014.48.4
Jul29° / 21°20.5014.27.1
Aug30° / 22°102.1013.46.5
Sep27° / 19°325.9012.27.4
Oct23° / 15°557.4011.17.4
Nov18° / 11°7811.1010.15.7
Dec15° / 759.80.29.64.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% 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 34%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26337
36337
46337
56337
66436
76436
86436
96436
106535
116535
126535
136535
146634
156634
166733
176634
186733
196733
206733
216832
226832
236733
246733
256832
266832
276832
286832
296931
306931
317030

Chance of precipitation in May

Any precipitation

Boû Arfa gets around 54 mm of rain over 6.8 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 22% and peaks near 30% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
130
229
329
428
528
627
726
826
925
1024
1124
1223
1322
1422
1521
1621
1721
1820
1920
2020
2119
2219
2318
2418
2518
2617
2717
2816
2916
3015
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. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
173252
272262
371272
468293
567303
665323
763334
862344
960355
1059365
1157376
1256386
1354397
1453407
1551418
1650428
1749429
18474310
19454410
20444511
21424612
22404714
23384715
24364816
25344818
26324919
27304921
28284922
29275023
30255025
31245026

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 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
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 30 min at the start of May to 14 h 18 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 6:02 AM to 5:38 AM, and sunset from 7:30 PM to 7:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.56:027:30
213.56:017:31
313.56:007:32
413.65:587:33
513.65:577:34
613.65:567:34
713.75:557:35
813.75:547:36
913.75:537:37
1013.85:527:38
1113.85:517:39
1213.85:507:40
1313.85:507:40
1413.95:497:41
1513.95:487:42
1613.95:477:43
1714.05:467:44
1814.05:457:45
1914.05:457:45
2014.05:447:46
2114.15:437:47
2214.15:437:48
2314.15:427:49
2414.15:417:49
2514.25:417:50
2614.25:407:51
2714.25:407:52
2814.25:397:52
2914.25:397:53
3014.35:387:54
3114.35:387:55

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.82 kWh/m².

For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 7.5 kWh/m² in June across the year — May's 6.82 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.6Intense
66.6Intense
76.6Intense
86.7Intense
96.7Intense
106.7Intense
116.7Intense
126.8Intense
136.8Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.9Intense
196.9Intense
206.9Intense
216.9Intense
226.9Intense
237.0Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
287.1Intense
297.1Intense
307.1Intense
317.1Intense
Planning a trip in May

Hazard calendar for Boû Arfa

In seasonPeak

None of Boû Arfa's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Boû Arfa sees seasonal dust haze (June–July), heaviest in July.

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

Is May a good time to visit Boû Arfa?

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

7.4
Sightseeing
2nd-best month of the year
5.0
Beach & pool
6th-best month of the year

May is one of the better times to visit Boû Arfa for general sightseeing.

What to pack for Boû Arfa in May

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

In May, Boû Arfa sees daytime highs around 22°C and nights near 14°C. Pack sun protection. About 7 days see rain.

sun protection

Sea temperature near Boû Arfa in May

The nearest coast averages about 18°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 km away) is warmest in August at about 25°C and coldest in February near 15°C.

It's comfortable for a long swim from Jun 7 to Nov 4 — about 5 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar15Cool
Apr16Cool
May18Cool
Jun21Refreshing
Jul24Refreshing
Aug25Warm
Sep24Warm
Oct22Refreshing
Nov19Cool
Dec17Cool

UV index in Boû Arfa 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 Boû Arfa peaks around July 17 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highHighModerateJul 17UV 10Dec 20UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep7Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Boû Arfa 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 Boû Arfa is worst in July — around 67 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (November, 40 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorJul 1966 µg/m³Nov 1841 µg/m³
PM2.5 (µg/m³)Level
Jan43Poor
Feb51Poor
Mar59Unhealthy
Apr58Unhealthy
May56Unhealthy
Jun55Poor
Jul67Unhealthy
Aug61Unhealthy
Sep48Poor
Oct52Poor
Nov40Poor
Dec47Poor
Location & terrain

Where is Boû Arfa?

Boû Arfa sits at 36.5°N, 2.8°E, 241 m above sea level, in Algeria. The nearest listed city is Blida, 1.0 km away.

Topography around Boû Arfa

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

Within 3 km, the terrain around Boû Arfa has large variations in elevation — a maximum elevation change of 856 m around an average of 342 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,607 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,792 m.

The land around Boû Arfa is covered by artificial surfaces (42%) and trees (41%) within 3 km, trees (45%) and cropland (20%) within 16 km, and grassland (26%), water (25%) and cropland (20%) within 80 km.

3 km
856 m
16 km
1,607 m
80 km
1,792 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Blida 1.0 km · Chiffa 7.0 km · Beni Mered 8.0 km · Beni Tamou 8.0 km · Souma 10 km · Oued el Alleug 10 km · Mouzaïa 11 km · Boufarik 15 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 Boû Arfa (36.463°, 2.8146°, elevation 241 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).