Rumāḩ weather in December

In December, Rumāḩ sees average daytime highs of 21°C and overnight lows near 10°C, with 15 mm of rain across 2.8 wet days and about 10.4 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 20°C by the end. The sky is clear or mostly clear about 71% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 30 min at the start of December to 10 h 24 min by month's end. Set against the rest of the year, December is Rumāḩ's 9th-clearest and 9th-windiest month. For the whole year in context, see Rumāḩ's year-round climate.

Daytime high
21°
11th warmest
Overnight low
10°
2nd coldest
Rainfall
15 mm
2.8 wet days
Daylight
10 h 24 min
6:35 AM – 5:00 PM
Cloud cover
27%
9th clearest
Wind
13 km/h
9th windiest
Solar energy
4.08 kWh/m²
Travel score
8.2
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 20°C by the end.

A typical December day in Rumāḩ reaches about 21°C in the afternoon and slips back to 10°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 26°C. Set against its neighbours, December runs about 5°C cooler than November and about 2°C warmer than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12312
22312
32212
42212
52212
62212
72211
82211
92211
102111
112111
122111
132111
142110
152110
162110
172110
182110
192110
202010
212010
222010
23209
24209
25209
26209
27209
28209
29209
30209
31209

How December really feels in Rumāḩ

Once humidity and wind are folded in, December 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Rumāḩ weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 3rd-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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 17%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38218
48218
58218
68218
78317
88317
98317
108317
118317
128317
138317
148317
158317
168317
178317
188317
198317
208317
218317
228317
238317
248317
258317
268317
278317
288218
298218
308119
318119

Chance of precipitation in December

Any precipitation

Rumāḩ gets around 15 mm of rain over 2.8 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 10% and peaks near 13% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
113
212
312
412
511
611
711
810
910
1010
1110
1210
1310
1410
159
169
179
189
199
208
218
228
238
248
258
268
278
288
298
309
319

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 94% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
186104
28794
38794
48794
58884
68884
79073
89073
99163
109163
119352
129352
139442
149442
159541
169631
179631
189631
199730
209820
219820
229820
239820
249820
259820
269820
279820
289820
299820
309820
319730

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
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
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 30 min at the start of December to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:26 AM to 6:42 AM, and sunset from 4:57 PM to 5:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.56:264:57
210.56:264:57
310.56:274:57
410.56:284:57
510.56:284:57
610.56:294:57
710.56:304:57
810.56:304:58
910.46:314:58
1010.46:324:58
1110.46:324:58
1210.46:334:59
1310.46:334:59
1410.46:344:59
1510.46:355:00
1610.46:355:00
1710.46:365:00
1810.46:365:01
1910.46:375:01
2010.46:375:02
2110.46:385:02
2210.46:385:02
2310.46:395:03
2410.46:395:03
2510.46:405:04
2610.46:405:04
2710.46:405:05
2810.46:415:06
2910.46:415:06
3010.46:415:07
3110.46:425:07

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.08 kWh/m² — the year's lowest.

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 — December's 4.08 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.2Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.0Bright
174.0Bright
184.0Bright
194.0Bright
204.0Bright
214.0Bright
224.0Bright
234.0Bright
244.0Bright
254.0Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.1Bright
314.1Bright
Planning a trip in December

Hazard calendar for Rumāḩ

In seasonPeak

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

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

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

Is December a good time to visit Rumāḩ?

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

8.2
Sightseeing
2nd-best month of the year
4.9
Beach & pool
6th-best month of the year

December is one of the better times to visit Rumāḩ for general sightseeing.

What to pack for Rumāḩ in December

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

In December, Rumāḩ sees daytime highs around 21°C and nights near 10°C. Little to plan around — just the basics.

UV index in Rumāḩ in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 4 — enough to warrant sun protection. 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 December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December 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
December 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).