Ar Rass in Fall
In fall (September, October and November), Ar Rass sees average daytime highs around 34°C and overnight lows near 20°C, with 22 mm of rain over about 4 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 42°C in early September to 24°C by late November. The sky is clear or mostly clear about 83% of the time across fall, and the air most often feels dry.
Fall is Ar Rass's 3rd-best season to visit on our travel score. For the whole year in context, see Ar Rass's year-round climate.
- Avg daytime high
- 34°C
- 2nd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 22 mm
- 4 wet days
- Avg wind
- 14 km/h
- Travel score
- 3.9
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Ar Rass in Fall
Over the season highs ease from about 42°C in early September to 24°C by late November.
A typical fall day in Ar Rass reaches about 34°C and drops to 20°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Ar Rass
Once humidity and wind are folded in, fall brings about 58 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Ar Rass 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 | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 20° / 8° | 13 | 2.4 | 10.6 | 8.0 |
| Feb | 23° / 11° | 6 | 1.1 | 11.1 | 8.9 |
| Mar | 27° / 14° | 14 | 2.2 | 11.8 | 8.0 |
| Apr | 33° / 19° | 13 | 2.7 | 12.6 | 4.6 |
| May | 38° / 24° | 2 | 0.4 | 13.2 | 1.3 |
| Jun | 42° / 26° | 0 | 0 | 13.6 | 0.0 |
| Jul | 42° / 27° | 0 | 0 | 13.5 | 0.0 |
| Aug | 43° / 28° | 0 | 0 | 12.9 | 0.0 |
| Sep | 40° / 25° | 0 | 0.1 | 12.2 | 0.3 |
| Oct | 35° / 21° | 3 | 0.4 | 11.4 | 3.5 |
| Nov | 27° / 15° | 20 | 3 | 10.7 | 7.8 |
| Dec | 22° / 10° | 12 | 2.3 | 10.4 | 8.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 83% of the time across fall.
Chance of precipitation in Fall
Ar Rass gets around 22 mm of rain over 4 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 14 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 30 min in early September to 10 h 30 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 5.6 kWh/m².
Hazard calendar for Ar Rass
In fall, Ar Rass overlaps its dust season. The full year is below, with each hazard's peak months called out.
Ar Rass sees seasonal dust haze (February–September), heaviest in May.
Is fall a good time to visit Ar Rass?
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 weaker month for outdoor sightseeing in Ar Rass. The water and warmth also suit a beach or pool day.
What to pack for Ar Rass in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Ar Rass sees daytime highs around 34°C and nights near 20°C. Pack light clothes and sun protection.
UV index in Ar Rass in Fall
Clear-sky midday UV across fall averages around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ar Rass peaks around July 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 7 | 9 | 7 | 10 | 11 | 12 | 11 | 10 | 9 | 6 | 5 |
| Level | High | Very high | Very high | High | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 7 | Very high |
| Mar | 9 | Very high |
| Apr | 7 | High |
| May | 10 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 10 | Very high |
| Oct | 9 | Very high |
| Nov | 6 | High |
| Dec | 5 | Moderate |
Air quality in Ar Rass 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 Ar Rass is worst in March — around 94 µg/m³ PM2.5 (unhealthy), about 2.0× the cleanest month (September, 46 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) | 68 | 78 | 94 | 84 | 79 | 52 | 49 | 47 | 46 | 48 | 61 | 68 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Poor | Poor | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 68 | Unhealthy |
| Feb | 78 | Unhealthy |
| Mar | 94 | Unhealthy |
| Apr | 84 | Unhealthy |
| May | 79 | Unhealthy |
| Jun | 52 | Poor |
| Jul | 49 | Poor |
| Aug | 47 | Poor |
| Sep | 46 | Poor |
| Oct | 48 | Poor |
| Nov | 61 | Unhealthy |
| Dec | 68 | Unhealthy |
Where is Ar Rass?
Ar Rass sits at 25.9°N, 43.5°E, 691 m above sea level, in Saudi Arabia. The nearest listed city is Riyāḑ al Khabrā’, 23 km away.
Topography around Ar Rass
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ar Rass.
Within 3 km, the terrain around Ar Rass has only modest variations in elevation — a maximum elevation change of 40 m around an average of 689 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 131 m; within 80 km, large variations in elevation — a maximum elevation change of 680 m.
The land around Ar Rass is covered by artificial surfaces (63%) and bare terrain (32%) within 3 km, bare terrain (93%) within 16 km, and bare terrain (93%) within 80 km.
Saudi Arabia travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type G
- 230 V · 60 Hz
- Prices
- ≈ 47% of US
- price level, 2025
- GDP per capita
- $34,537
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Homicide rate
- 0.9
- per 100k, 2019
- Road deaths
- 35.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very low
- EF EPI 404
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 Ar Rass (25.8694°, 43.4973°, elevation 691 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.