Arris weather in May

In May, Arris sees average daytime highs of 22°C and overnight lows near 10°C, with 62 mm of rain across 10.4 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 24°C by the end. The sky is clear or mostly clear about 46% 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 Arris's 6th-clearest and 3rd-windiest month. For the whole year in context, see Arris's year-round climate.

Daytime high: 22°; 5th warmest
Overnight low: 10°; 8th coldest
Rainfall: 62 mm; 10.4 wet days
Daylight: 13 h 48 min; 5:35 AM – 7:26 PM
Cloud cover: 46%; 6th clearest
Wind: 8 km/h; 3rd windiest
Solar energy: 6.93 kWh/m²
Travel score: 6.9; out of 10

← April Arris year-round climate June →Best places to visit in May

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

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 24°C by the end.

A typical May day in Arris reaches about 22°C in the afternoon and slips back to 10°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 27°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	20	20	20	20	20	21	21	21	21	21	22	22	22	22	22	22	22	23	23	23	23	23	23	23	24	24	24	24	24	25	25
Avg low (°C)	8	8	8	8	8	9	9	9	9	9	9	9	10	10	10	10	10	10	10	11	11	11	11	11	11	11	12	12	12	12	12

	Avg high (°C)	Avg low (°C)
1	20	8
2	20	8
3	20	8
4	20	8
5	20	8
6	21	9
7	21	9
8	21	9
9	21	9
10	21	9
11	22	9
12	22	9
13	22	10
14	22	10
15	22	10
16	22	10
17	22	10
18	23	10
19	23	10
20	23	11
21	23	11
22	23	11
23	23	11
24	23	11
25	24	11
26	24	11
27	24	12
28	24	12
29	24	12
30	25	12
31	25	12

How May really feels in Arris

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

heat index over the day's high

Days feeling ≤ 0°C

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.

Arris weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	9° / -0°	34	7.1	4.3	9.9	1.8
Feb	10° / 0°	30	6.9	4.1	10.7	2.4
Mar	13° / 2°	55	9.2	2.3	11.7	4.0
Apr	17° / 6°	64	10	0.5	12.9	5.6
May	22° / 10°	62	10.4	0	13.8	6.9
Jun	28° / 15°	41	8.3	0	14.3	6.7
Jul	31° / 18°	20	6.4	0	14.1	5.1
Aug	31° / 18°	38	9.1	0	13.3	5.2
Sep	25° / 14°	70	11.4	0	12.2	6.8
Oct	20° / 9°	54	8.2	0	11.1	6.7
Nov	14° / 4°	37	6.6	0.9	10.1	4.4
Dec	10° / 1°	30	6.2	2.8	9.7	2.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 21% of May, with mostly cloudy or overcast conditions the remaining 33%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	67	68	68	69	69	69	69	69	69	69	69	68	68	67	67	67	66	65	65	65	65	65	64	64	64	64	64	65	65	67	67
Cloudier (%)	33	32	32	31	31	31	31	31	31	31	31	32	32	33	33	33	34	35	35	35	35	35	36	36	36	36	36	35	35	33	33

	Clearer (%)	Cloudier (%)
1	67	33
2	68	32
3	68	32
4	69	31
5	69	31
6	69	31
7	69	31
8	69	31
9	69	31
10	69	31
11	69	31
12	68	32
13	68	32
14	67	33
15	67	33
16	67	33
17	66	34
18	65	35
19	65	35
20	65	35
21	65	35
22	65	35
23	64	36
24	64	36
25	64	36
26	64	36
27	64	36
28	65	35
29	65	35
30	67	33
31	67	33

Chance of precipitation in May

Any precipitation

Arris gets around 62 mm of rain over 10.4 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 33% and peaks near 37% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	37	37	37	36	36	35	34	34	33	32	32	31	30	30	30	30	30	30	31	31	32	32	32	33	33	33	34	34	34	34	33

	Rain chance (%)
1	37
2	37
3	37
4	36
5	36
6	35
7	34
8	34
9	33
10	32
11	32
12	31
13	30
14	30
15	30
16	30
17	30
18	30
19	31
20	31
21	32
22	32
23	32
24	33
25	33
26	33
27	34
28	34
29	34
30	34
31	33

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	9	9	9	9	9	9	9	9	9	9	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	9	calm
2	9	calm
3	9	calm
4	9	calm
5	9	calm
6	9	calm
7	9	calm
8	9	calm
9	9	calm
10	9	calm
11	8	calm
12	8	calm
13	8	calm
14	8	calm
15	8	calm
16	8	calm
17	8	calm
18	8	calm
19	8	calm
20	8	calm
21	8	calm
22	8	calm
23	8	calm
24	8	calm
25	8	calm
26	8	calm
27	8	calm
28	8	calm
29	8	calm
30	8	calm
31	8	calm

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 5:50 AM to 5:27 AM, and sunset from 7:14 PM to 7:37 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	13.4	13.4	13.5	13.5	13.5	13.6	13.6	13.6	13.7	13.7	13.7	13.7	13.8	13.8	13.8	13.8	13.9	13.9	13.9	13.9	14.0	14.0	14.0	14.0	14.1	14.1	14.1	14.1	14.1	14.2	14.2
Sunrise (AM)	5:50	5:49	5:47	5:46	5:45	5:44	5:43	5:42	5:41	5:41	5:40	5:39	5:38	5:37	5:36	5:35	5:35	5:34	5:33	5:32	5:32	5:31	5:31	5:30	5:29	5:29	5:28	5:28	5:27	5:27	5:27
Sunset (PM)	7:14	7:15	7:16	7:16	7:17	7:18	7:19	7:20	7:21	7:21	7:22	7:23	7:24	7:25	7:26	7:26	7:27	7:28	7:29	7:29	7:30	7:31	7:32	7:32	7:33	7:34	7:35	7:35	7:36	7:37	7:37

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.4	5:50	7:14
2	13.4	5:49	7:15
3	13.5	5:47	7:16
4	13.5	5:46	7:16
5	13.5	5:45	7:17
6	13.6	5:44	7:18
7	13.6	5:43	7:19
8	13.6	5:42	7:20
9	13.7	5:41	7:21
10	13.7	5:41	7:21
11	13.7	5:40	7:22
12	13.7	5:39	7:23
13	13.8	5:38	7:24
14	13.8	5:37	7:25
15	13.8	5:36	7:26
16	13.8	5:35	7:26
17	13.9	5:35	7:27
18	13.9	5:34	7:28
19	13.9	5:33	7:29
20	13.9	5:32	7:29
21	14.0	5:32	7:30
22	14.0	5:31	7:31
23	14.0	5:31	7:32
24	14.0	5:30	7:32
25	14.1	5:29	7:33
26	14.1	5:29	7:34
27	14.1	5:28	7:35
28	14.1	5:28	7:35
29	14.1	5:27	7:36
30	14.2	5:27	7:37
31	14.2	5:27	7:37

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.93 kWh/m².

For context, solar energy here swings from a low near 2.65 kWh/m² to a high of 7.43 kWh/m² in July across the year — May's 6.93 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	6.8	6.8	6.8	6.8	6.8	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	6.9	7.0	7.0	7.0	7.0	7.0	7.0	7.1
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	6.8	Intense
2	6.8	Intense
3	6.8	Intense
4	6.8	Intense
5	6.8	Intense
6	6.9	Intense
7	6.9	Intense
8	6.9	Intense
9	6.9	Intense
10	6.9	Intense
11	6.9	Intense
12	6.9	Intense
13	6.9	Intense
14	6.9	Intense
15	6.9	Intense
16	6.9	Intense
17	6.9	Intense
18	6.9	Intense
19	6.9	Intense
20	6.9	Intense
21	6.9	Intense
22	6.9	Intense
23	6.9	Intense
24	6.9	Intense
25	7.0	Intense
26	7.0	Intense
27	7.0	Intense
28	7.0	Intense
29	7.0	Intense
30	7.0	Intense
31	7.1	Intense

Planning a trip in May

Hazard calendar for Arris

In seasonPeak

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

Arris sees seasonal dust haze (April–September), heaviest in June.

Dust

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is May a good time to visit Arris?

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

6.9

Sightseeing

1st-best month of the year

4.9

Beach & pool

5th-best month of the year

May is a reasonable time to visit Arris for sightseeing.

What to pack for Arris in May

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

In May, Arris sees daytime highs around 22°C and nights near 10°C. Pack sun protection. Worth having: light clothes and rain gear. About 10 days see rain.

sun protectionlight clothesrain gear

UV index in Arris 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 Arris peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	3	5	6	6	8	9	9	8	8	6	4	2
Level	Moderate	Moderate	High	High	Very high	Very high	Very high	Very high	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	3	Moderate
Feb	5	Moderate
Mar	6	High
Apr	6	High
May	8	Very high
Jun	9	Very high
Jul	9	Very high
Aug	8	Very high
Sep	8	Very high
Oct	6	High
Nov	4	Moderate
Dec	2	Moderate

Air quality in Arris 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 Arris is worst in June — around 34 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 18 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	20	20	24	31	31	34	30	30	31	26	19	18
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	20	Moderate
Feb	20	Moderate
Mar	24	Moderate
Apr	31	Moderate
May	31	Moderate
Jun	34	Moderate
Jul	30	Moderate
Aug	30	Moderate
Sep	31	Moderate
Oct	26	Moderate
Nov	19	Moderate
Dec	18	Moderate

Location & terrain

Where is Arris?

Arris sits at 35.3°N, 6.3°E, 1,205 m above sea level, in Algeria. The nearest listed city is Tazoult-Lambese, 26 km away.

Topography around Arris

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

Within 3 km, the terrain around Arris has large variations in elevation — a maximum elevation change of 631 m around an average of 1,290 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,476 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,322 m.

The land around Arris is covered by grassland (53%) within 3 km, grassland (62%) and trees (21%) within 16 km, and grassland (35%), bare terrain (29%) and cropland (23%) within 80 km.

3 km

631 m

grassland 53%

16 km

1,476 m

grassland 62%

80 km

2,322 m

grassland 35%

treesshrubsgrasslandcroplandartificial surfacesbare terrain

← April Arris year-round climate June →Best places to visit in May

May weather nearby: Tazoult-Lambese 26 km · Batna 37 km · Aïn Touta 43 km · Merouana 57 km · Kaïs 59 km · Zeribet el Oued 66 km · Sidi Okba 70 km · Biskra 72 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

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 Arris (35.2588°, 6.3471°, elevation 1,205 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).

	Avg high (°C)	Avg low (°C)
1	20	8
2	20	8
3	20	8
4	20	8
5	20	8
6	21	9
7	21	9
8	21	9
9	21	9
10	21	9
11	22	9
12	22	9
13	22	10
14	22	10
15	22	10
16	22	10
17	22	10
18	23	10
19	23	10
20	23	11
21	23	11
22	23	11
23	23	11
24	23	11
25	24	11
26	24	11
27	24	12
28	24	12
29	24	12
30	25	12
31	25	12

	Clearer (%)	Cloudier (%)
1	67	33
2	68	32
3	68	32
4	69	31
5	69	31
6	69	31
7	69	31
8	69	31
9	69	31
10	69	31
11	69	31
12	68	32
13	68	32
14	67	33
15	67	33
16	67	33
17	66	34
18	65	35
19	65	35
20	65	35
21	65	35
22	65	35
23	64	36
24	64	36
25	64	36
26	64	36
27	64	36
28	65	35
29	65	35
30	67	33
31	67	33

	Rain chance (%)
1	37
2	37
3	37
4	36
5	36
6	35
7	34
8	34
9	33
10	32
11	32
12	31
13	30
14	30
15	30
16	30
17	30
18	30
19	31
20	31
21	32
22	32
23	32
24	33
25	33
26	33
27	34
28	34
29	34
30	34
31	33

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	20	8
2	20	8
3	20	8
4	20	8
5	20	8
6	21	9
7	21	9
8	21	9
9	21	9
10	21	9
11	22	9
12	22	9
13	22	10
14	22	10
15	22	10
16	22	10
17	22	10
18	23	10
19	23	10
20	23	11
21	23	11
22	23	11
23	23	11
24	23	11
25	24	11
26	24	11
27	24	12
28	24	12
29	24	12
30	25	12
31	25	12

	Clearer (%)	Cloudier (%)
1	67	33
2	68	32
3	68	32
4	69	31
5	69	31
6	69	31
7	69	31
8	69	31
9	69	31
10	69	31
11	69	31
12	68	32
13	68	32
14	67	33
15	67	33
16	67	33
17	66	34
18	65	35
19	65	35
20	65	35
21	65	35
22	65	35
23	64	36
24	64	36
25	64	36
26	64	36
27	64	36
28	65	35
29	65	35
30	67	33
31	67	33

	Rain chance (%)
1	37
2	37
3	37
4	36
5	36
6	35
7	34
8	34
9	33
10	32
11	32
12	31
13	30
14	30
15	30
16	30
17	30
18	30
19	31
20	31
21	32
22	32
23	32
24	33
25	33
26	33
27	34
28	34
29	34
30	34
31	33

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	20	8
2	20	8
3	20	8
4	20	8
5	20	8
6	21	9
7	21	9
8	21	9
9	21	9
10	21	9
11	22	9
12	22	9
13	22	10
14	22	10
15	22	10
16	22	10
17	22	10
18	23	10
19	23	10
20	23	11
21	23	11
22	23	11
23	23	11
24	23	11
25	24	11
26	24	11
27	24	12
28	24	12
29	24	12
30	25	12
31	25	12

	Clearer (%)	Cloudier (%)
1	67	33
2	68	32
3	68	32
4	69	31
5	69	31
6	69	31
7	69	31
8	69	31
9	69	31
10	69	31
11	69	31
12	68	32
13	68	32
14	67	33
15	67	33
16	67	33
17	66	34
18	65	35
19	65	35
20	65	35
21	65	35
22	65	35
23	64	36
24	64	36
25	64	36
26	64	36
27	64	36
28	65	35
29	65	35
30	67	33
31	67	33

	Rain chance (%)
1	37
2	37
3	37
4	36
5	36
6	35
7	34
8	34
9	33
10	32
11	32
12	31
13	30
14	30
15	30
16	30
17	30
18	30
19	31
20	31
21	32
22	32
23	32
24	33
25	33
26	33
27	34
28	34
29	34
30	34
31	33

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100