Rumāḩ weather in September

In September, Rumāḩ sees average daytime highs of 40°C and overnight lows near 26°C, with 0 mm of rain across 0 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 42°C in the first days to 38°C by the end. The sky is clear or mostly clear about 98% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Rumāḩ's 1st-clearest and 11th-windiest month. For the whole year in context, see Rumāḩ's year-round climate.

Daytime high
40°
4th warmest
Overnight low
26°
9th coldest
Rainfall
0 mm
0 wet days
Daylight
12 h 06 min
5:41 AM – 5:50 PM
Cloud cover
4%
1st clearest
Wind
12 km/h
11th windiest
Solar energy
6.71 kWh/m²
Travel score
0.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 42°C in the first days to 38°C by the end.

A typical September day in Rumāḩ reaches about 40°C in the afternoon and slips back to 26°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 37°C and 42°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

20°25°30°35°40°45°151015202530
Avg high (°C)Avg low (°C)
14228
24227
34227
44227
54127
64127
74127
84127
94127
104126
114126
124026
134026
144026
154026
164025
174025
184025
194025
203925
213925
223925
233924
243924
253924
263824
273824
283824
293823
303823

How September really feels in Rumāḩ

Once humidity and wind are folded in, September averages 30 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
30
22 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Rumāḩ weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 152.910.67.8
Feb22° / 11°81.611.18.7
Mar27° / 15°142.611.88.0
Apr33° / 20°132.712.64.5
May39° / 25°40.513.21.0
Jun42° / 28°0013.60.0
Jul43° / 29°0013.40.0
Aug43° / 29°0012.90.0
Sep40° / 26°0012.20.4
Oct35° / 21°10.211.43.7
Nov26° / 15°192.910.88.0
Dec21° / 10°152.810.48.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 98% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 1% of September, with mostly cloudy or overcast conditions the remaining 1%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1991
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30982

Chance of precipitation in September

Any precipitation

Rumāḩ gets around 0 mm of rain over 0 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 0% and peaks near 0% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 30 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over September. Sunrise moves from 5:35 AM to 5:47 AM, and sunset from 6:07 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:356:07
212.55:366:06
312.55:366:05
412.55:366:04
512.45:376:03
612.45:376:01
712.45:386:00
812.45:385:59
912.35:385:58
1012.35:395:57
1112.35:395:56
1212.35:405:55
1312.25:405:54
1412.25:405:52
1512.25:415:51
1612.15:415:50
1712.15:425:49
1812.15:425:48
1912.15:425:47
2012.05:435:46
2112.05:435:44
2212.05:445:43
2312.05:445:42
2411.95:445:41
2511.95:455:40
2611.95:455:39
2711.95:465:38
2811.85:465:37
2911.85:475:35
3011.85:475:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.71 kWh/m².

For context, solar energy here swings from a low near 4.08 kWh/m² to a high of 7.79 kWh/m² in June across the year — September's 6.71 kWh/m² falls in the middle.

02468151015202530
Solar energy (kWh/m²)Level
17.1Intense
27.0Intense
37.0Intense
47.0Intense
57.0Intense
67.0Intense
76.9Intense
86.9Intense
96.9Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.4Intense
276.4Intense
286.4Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Rumāḩ

In seasonPeak

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

Rumāḩ sees seasonal dust haze (February–September), heaviest in May.

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

Is September a good time to visit Rumāḩ?

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

0.4
Sightseeing
9th-best month of the year
3.4
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Rumāḩ.

What to pack for Rumāḩ in September

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

In September, Rumāḩ sees daytime highs around 40°C and nights near 26°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Rumāḩ in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rumāḩ peaks around July 18 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeExtremeVery highHighModerateJul 18UV 11Dec 18UV 4
UV index (midday)Level
Jan5High
Feb7Very high
Mar8Very high
Apr8Very high
May10Extreme
Jun10Very high
Jul12Extreme
Aug10Extreme
Sep9Very high
Oct8Very high
Nov6High
Dec4Moderate

Air quality in Rumāḩ in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Rumāḩ is worst in March — around 90 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (October, 50 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyMar 2290 µg/m³Oct 1451 µg/m³
PM2.5 (µg/m³)Level
Jan66Unhealthy
Feb72Unhealthy
Mar90Unhealthy
Apr87Unhealthy
May85Unhealthy
Jun76Unhealthy
Jul74Unhealthy
Aug66Unhealthy
Sep54Poor
Oct50Poor
Nov57Unhealthy
Dec61Unhealthy
Location & terrain

Where is Rumāḩ?

Rumāḩ sits at 25.6°N, 47.2°E, 565 m above sea level, in Saudi Arabia. The nearest listed city is Riyadh, 107 km away.

Al KharjAd DilamShaqraḤawṭah Banī TamīmAl Mubarraz

Topography around Rumāḩ

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

Within 3 km, the terrain around Rumāḩ has only modest variations in elevation — a maximum elevation change of 19 m around an average of 560 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 85 m; within 80 km, significant variations in elevation — a maximum elevation change of 434 m.

The land around Rumāḩ is covered by bare terrain (78%) and artificial surfaces (22%) within 3 km, bare terrain (99%) within 16 km, and bare terrain (100%) within 80 km.

3 km
19 m
16 km
85 m
80 km
434 m
artificial surfacesbare terrain
September weather nearby: Riyadh 107 km · Ad Dir‘īyah 110 km · ‘Irqah 113 km · Al Kharj 158 km · Ad Dilam 175 km · Shaqra 196 km · Ḥawṭah Banī Tamīm 232 km · Al Mubarraz 244 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 Rumāḩ (25.5639°, 47.1641°, elevation 565 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).