Rumāḩ weather in May

In May, Rumāḩ sees average daytime highs of 39°C and overnight lows near 25°C, with 4 mm of rain across 0.5 wet days and about 13.2 hours of daylight. It is the 5th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 36°C in the first days to 41°C by the end. The sky is clear or mostly clear about 76% of the time in May, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of May to 13 h 30 min by month's end. Set against the rest of the year, May is Rumāḩ's 6th-clearest and 6th-windiest month. For the whole year in context, see Rumāḩ's year-round climate.

Daytime high
39°
5th warmest
Overnight low
25°
8th coldest
Rainfall
4 mm
0.5 wet days
Daylight
13 h 12 min
5:10 AM – 6:25 PM
Cloud cover
23%
6th clearest
Wind
15 km/h
6th windiest
Solar energy
7.63 kWh/m²
Travel score
1.0
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 36°C in the first days to 41°C by the end.

A typical May day in Rumāḩ reaches about 39°C in the afternoon and slips back to 25°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 35°C and 42°C. Set against its neighbours, May runs about 6°C warmer than April and about 3°C cooler than June.

20°30°40°151015202531
Avg high (°C)Avg low (°C)
13623
23623
33623
43723
53724
63724
73724
83724
93824
103825
113825
123825
133825
143825
153925
163925
173926
183926
193926
203926
214026
224026
234026
244026
254027
264027
274127
284127
294127
304127
314127

How May really feels in Rumāḩ

Once humidity and wind are folded in, May averages 31 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
31
14 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

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

Rumāḩ weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 7th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 76% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 13%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18119
28119
38119
48119
58218
68218
78218
88317
98317
108317
118416
128416
138515
148515
158614
168614
178614
188812
198812
208812
218911
228911
239010
24919
25919
26928
27928
28946
29946
30946
31955

Chance of precipitation in May

Any precipitation

Rumāḩ gets around 4 mm of rain over 0.5 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 2% and peaks near 6% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
16
26
36
45
55
64
74
84
93
103
113
122
132
142
152
161
171
181
191
200
210
220
230
240
250
260
270
280
290
300
310

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 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19253
29253
39253
49352
59352
69442
79442
89442
99541
109631
119631
129631
139631
149721
159721
169820
179910
189910
199910
2010000
2110000
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000
3110000

Wind in May

Winds average 15 km/h in May.

Across May, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3115light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 54 min at the start of May to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over May. Sunrise moves from 5:20 AM to 5:05 AM, and sunset from 6:17 PM to 6:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:206:17
213.05:196:17
313.05:196:18
413.05:186:19
513.05:176:19
613.15:166:20
713.15:166:20
813.15:156:21
913.15:146:21
1013.15:146:22
1113.25:136:22
1213.25:126:23
1313.25:126:23
1413.25:116:24
1513.25:116:24
1613.25:106:25
1713.35:106:25
1813.35:096:26
1913.35:096:27
2013.35:086:27
2113.35:086:28
2213.35:086:28
2313.45:076:29
2413.45:076:29
2513.45:066:30
2613.45:066:30
2713.45:066:31
2813.45:066:31
2913.45:056:32
3013.55:056:32
3113.55:056:33

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.63 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 — May's 7.63 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.4Intense
47.4Intense
57.4Intense
67.4Intense
77.5Intense
87.5Intense
97.5Intense
107.5Intense
117.5Intense
127.6Intense
137.6Intense
147.6Intense
157.6Intense
167.6Intense
177.7Intense
187.7Intense
197.7Intense
207.7Intense
217.7Intense
227.7Intense
237.7Intense
247.7Intense
257.8Intense
267.8Intense
277.8Intense
287.8Intense
297.8Intense
307.8Intense
317.8Intense
Planning a trip in May

Hazard calendar for Rumāḩ

In seasonPeak

In May, 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 May a good time to visit Rumāḩ?

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

1.0
Sightseeing
8th-best month of the year
4.2
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Rumāḩ.

What to pack for Rumāḩ in May

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

In May, Rumāḩ sees daytime highs around 39°C and nights near 25°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Rumāḩ in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (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 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 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
May 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).