Khulayş weather in December

In December, Khulayş sees average daytime highs of 31°C and overnight lows near 20°C, with 12 mm of rain across 2 wet days and about 10.7 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 32°C in the first days to 30°C by the end. The sky is clear or mostly clear about 76% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 42 min at the start of December to 10 h 42 min by month's end. Set against the rest of the year, December is Khulayş's 11th-clearest and 9th-windiest month. For the whole year in context, see Khulayş's year-round climate.

Daytime high
31°
10th warmest
Overnight low
20°
3rd coldest
Rainfall
12 mm
2 wet days
Daylight
10 h 42 min
6:59 AM – 5:38 PM
Cloud cover
24%
11th clearest
Wind
12 km/h
9th windiest
Solar energy
4.36 kWh/m²
Travel score
6.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 32°C in the first days to 30°C by the end.

A typical December day in Khulayş reaches about 31°C in the afternoon and slips back to 20°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 34°C. Set against its neighbours, December runs about 3°C cooler than November and about 2°C warmer than January.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13221
23221
33221
43221
53221
63121
73121
83121
93121
103121
113121
123121
133120
143120
153120
163120
173120
183120
193020
203020
213020
223020
233020
243020
253020
263020
273020
283020
293020
303020
313019

How December really feels in Khulayş

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.

Khulayş weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 19°202.310.86.9
Feb30° / 19°30.511.26.5
Mar33° / 21°6111.84.9
Apr36° / 23°6112.52.7
May39° / 25°20.8130.7
Jun40° / 27°00.113.30.0
Jul40° / 28°00.113.20.0
Aug40° / 29°00.112.80.0
Sep40° / 27°10.212.10.2
Oct38° / 25°41.311.51.3
Nov34° / 23°252.310.94.1
Dec31° / 20°12210.76.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 14%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
19010
28911
38812
48713
58713
68713
78614
88515
98515
108515
118515
128515
138515
148515
158515
168515
178515
188614
198614
208614
218614
228614
238614
248713
258614
268515
278515
288515
298515
308317
318317

Chance of precipitation in December

Any precipitation

Khulayş gets around 12 mm of rain over 2 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 6% and peaks near 8% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
17
27
37
47
57
66
76
86
96
106
116
126
135
145
155
165
175
185
195
206
216
226
236
247
257
267
277
287
297
307
318

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 24% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
12021202910
2212120289
3222120289
4232120288
5242120278
6242121277
7252121267
8262121256
9262222255
10272222245
11282323234
12282323223
13292423223
14292424212
15292524202
16302524192
17302625191
18302625181
19302625171
20312625171
21312725162
22312725162
23312725162
24312725152
25302725152
26302725153
27302725153
28302725153
29302725153
30312725153
31322724143

Wind in December

Winds average 12 km/h in December.

Across December, 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.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 42 min at the start of December to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:50 AM to 7:06 AM, and sunset from 5:35 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:505:35
210.76:515:35
310.76:515:35
410.76:525:35
510.76:535:35
610.76:535:36
710.76:545:36
810.76:555:36
910.76:555:36
1010.76:565:36
1110.76:565:37
1210.76:575:37
1310.76:585:37
1410.76:585:38
1510.76:595:38
1610.76:595:38
1710.67:005:39
1810.67:005:39
1910.67:015:40
2010.67:015:40
2110.67:025:41
2210.67:025:41
2310.67:035:41
2410.67:035:42
2510.67:045:42
2610.67:045:43
2710.67:055:44
2810.77:055:44
2910.77:055:45
3010.77:065:45
3110.77:065:46

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.36 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.36 kWh/m² to a high of 7.53 kWh/m² in May across the year — December's 4.36 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in December

Hazard calendar for Khulayş

In seasonPeak

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

Khulayş sees seasonal dust haze (April–September), heaviest in June.

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

Is December a good time to visit Khulayş?

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

6.0
Sightseeing
3rd-best month of the year
8.5
Beach & pool
3rd-best month of the year

December is a reasonable time to visit Khulayş for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Khulayş in December

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

In December, Khulayş sees daytime highs around 31°C and nights near 20°C. Pack light clothes.

light clothes

Sea temperature near Khulayş in December

The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 32 km away) is warmest in August at about 31°C and coldest in February near 25°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb25Warm
Mar25Warm
Apr27Warm
May28Tropical
Jun29Tropical
Jul30Tropical
Aug31Tropical
Sep31Tropical
Oct31Tropical
Nov29Tropical
Dec27Warm

UV index in Khulayş 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 Khulayş peaks around July 10 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highModerateJul 10UV 11Dec 16UV 4
UV index (midday)Level
Jan7High
Feb8Very high
Mar10Very high
Apr11Extreme
May10Extreme
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep10Very high
Oct9Very high
Nov6High
Dec4Moderate

Air quality in Khulayş 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 Khulayş is worst in March — around 40 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMar 2339 µg/m³Nov 925 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb37Poor
Mar40Poor
Apr39Poor
May32Moderate
Jun28Moderate
Jul27Moderate
Aug28Moderate
Sep27Moderate
Oct25Moderate
Nov25Moderate
Dec36Poor
Location & terrain

Where is Khulayş?

Khulayş sits at 22.2°N, 39.3°E, 67 m above sea level, in Saudi Arabia. The nearest listed city is Thuwal, 26 km away.

Ta'ifAsh ShafāBadr Ḩunayn

Topography around Khulayş

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

Within 3 km, the terrain around Khulayş has only modest variations in elevation — a maximum elevation change of 106 m around an average of 64 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 312 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,610 m.

The land around Khulayş is covered by bare terrain (94%) within 3 km, bare terrain (99%) within 16 km, and bare terrain (72%) and water (25%) within 80 km.

3 km
106 m
16 km
312 m
80 km
1,610 m
artificial surfacesbare terrainwater
December weather nearby: Thuwal 26 km · Al Jumūm 71 km · Jeddah 75 km · Rābigh 77 km · Mecca 96 km · Ta'if 150 km · Ash Shafā 159 km · Badr Ḩunayn 189 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 Khulayş (22.1555°, 39.3201°, elevation 67 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).