Arris in Fall
In fall (September, October and November), Arris sees average daytime highs around 20°C and overnight lows near 9°C, with 161 mm of precipitation over about 26 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 28°C in early September to 11°C by late November. The sky is clear or mostly clear about 44% of the time across fall, and the air most often feels dry.
Fall is Arris's best season of the year to visit on our travel score. For the whole year in context, see Arris's year-round climate.
- Avg daytime high
- 20°C
- 2nd-warmest season
- Avg overnight low
- 9°C
- Precipitation
- 161 mm
- 26 wet days
- Avg wind
- 7 km/h
- Travel score
- 6.0
- best season of the year
- Months
- Sep · Oct · Nov
Temperature in Arris in Fall
Over the season highs ease from about 28°C in early September to 11°C by late November.
A typical fall day in Arris reaches about 20°C and drops to 9°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Arris
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 4 that feel at or below 0°C.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Arris weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| 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 Fall
The sky is clear or mostly clear about 44% of the time across fall.
Chance of precipitation in Fall
Arris gets around 161 mm of rain and snow over 26 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 7 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 48 min in early September to 9 h 48 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.3 kWh/m².
Hazard calendar for Arris
In fall, Arris overlaps 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.
Is fall a good time to visit Arris?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Arris for sightseeing.
What to pack for Arris in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Arris sees daytime highs around 20°C and nights near 9°C. Worth packing: light clothes, a warm layer, rain gear and sun protection. About 26 days see rain.
UV index in Arris in Fall
Clear-sky midday UV across fall averages around 6 — 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 Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall 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 |
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.
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.