Nizwa weather in December

In December, Nizwa sees average daytime highs of 25°C and overnight lows near 15°C, with 6 mm of rain across 0.8 wet days and about 10.6 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 24°C by the end. The sky is clear or mostly clear about 82% 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 36 min by month's end. Set against the rest of the year, December is Nizwa's 4th-clearest and 11th-windiest month. For the whole year in context, see Nizwa's year-round climate.

Daytime high
25°
11th warmest
Overnight low
15°
3rd coldest
Rainfall
6 mm
0.8 wet days
Daylight
10 h 36 min
6:48 AM – 5:24 PM
Cloud cover
19%
4th clearest
Wind
5 km/h
11th windiest
Solar energy
4.52 kWh/m²
Travel score
9.2
out of 10

Nizwa is city in Ad Dakhiliyah governorate, Oman.

Density
21/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 24°C by the end.

A typical December day in Nizwa reaches about 25°C in the afternoon and slips back to 15°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 27°C. Set against its neighbours, December runs about 3°C cooler than November and about 2°C warmer than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12616
22616
32616
42616
52616
62616
72616
82616
92516
102516
112516
122515
132515
142515
152515
162515
172515
182515
192515
202515
212415
222415
232415
242414
252414
262414
272414
282414
292414
302414
312414

How December really feels in Nizwa

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.

Nizwa weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 13°71.310.79.1
Feb25° / 15°51.111.29.0
Mar29° / 18°202.311.87.3
Apr33° / 23°112.212.54.5
May37° / 27°51.613.11.9
Jun39° / 29°81.613.40.5
Jul39° / 29°163.413.30.8
Aug37° / 28°154.112.81.5
Sep36° / 26°20.712.12.8
Oct32° / 23°61.211.55.0
Nov28° / 18°111.210.98.0
Dec25° / 15°60.810.69.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 82% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 9%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1928
2928
3919
4919
5919
6919
7919
8919
9919
10919
11919
12919
13919
14919
15919
16919
17919
18919
19919
20919
21919
22919
23919
24919
25919
26919
27919
28919
299010
309010
319010

Chance of precipitation in December

Any precipitation

Nizwa gets around 6 mm of rain over 0.8 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 3% and peaks near 3% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
13
23
33
43
53
63
73
83
93
103
113
123
133
143
153
163
173
183
193
203
213
223
232
242
252
262
272
282
291
301
311

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19550
29550
39550
49550
59550
69550
79550
89451
99451
109451
119451
129451
139451
149451
159451
169451
179451
189361
199361
209460
219550
229550
239550
249550
259640
269640
279640
289640
299730
309730
319730

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 42 min at the start of December to 10 h 36 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 6:39 AM to 6:55 AM, and sunset from 5:20 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:395:20
210.76:405:21
310.76:405:21
410.76:415:21
510.76:415:21
610.76:425:21
710.66:435:21
810.66:435:22
910.66:445:22
1010.66:455:22
1110.66:455:22
1210.66:465:23
1310.66:465:23
1410.66:475:23
1510.66:485:24
1610.66:485:24
1710.66:495:24
1810.66:495:25
1910.66:505:25
2010.66:505:26
2110.66:515:26
2210.66:515:27
2310.66:525:27
2410.66:525:28
2510.66:525:28
2610.66:535:29
2710.66:535:29
2810.66:545:30
2910.66:545:30
3010.66:545:31
3110.66:555:31

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.52 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.52 kWh/m² to a high of 7.56 kWh/m² in May across the year — December's 4.52 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in December

Hazard calendar for Nizwa

In seasonPeak

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

Nizwa sees seasonal dust haze (April–September), heaviest in July.

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

Is December a good time to visit Nizwa?

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

9.2
Sightseeing
1st-best month of the year
8.1
Beach & pool
5th-best month of the year

December is one of the better times to visit Nizwa for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Nizwa in December

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

In December, Nizwa sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes and sun protection.

light clothessun protection

UV index in Nizwa in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nizwa peaks around May 10 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highHighMay 10UV 11Dec 15UV 6
UV index (midday)Level
Jan7Very high
Feb9Very high
Mar10Extreme
Apr11Extreme
May11Extreme
Jun10Extreme
Jul10Very high
Aug10Very high
Sep10Extreme
Oct9Very high
Nov7High
Dec6High

Air quality in Nizwa 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 Nizwa is worst in July — around 84 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (December, 25 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJul 1882 µg/m³Dec 1425 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb33Moderate
Mar37Poor
Apr43Poor
May48Poor
Jun57Unhealthy
Jul84Unhealthy
Aug67Unhealthy
Sep44Poor
Oct31Moderate
Nov27Moderate
Dec25Moderate
Location & terrain

Where is Nizwa?

Nizwa sits at 22.9°N, 57.5°E, 511 m above sea level, in Oman. The nearest listed city is Izkī, 24 km away.

AdamSufālat Samā’ilBidbidBarkā’

Topography around Nizwa

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

Within 3 km, the terrain around Nizwa has large variations in elevation — a maximum elevation change of 609 m around an average of 578 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,697 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,929 m.

The land around Nizwa is covered by bare terrain (65%) and artificial surfaces (23%) within 3 km, bare terrain (92%) within 16 km, and bare terrain (97%) within 80 km.

3 km
609 m
16 km
1,697 m
80 km
2,929 m
treesgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Izkī 24 km · Bahla 24 km · Rustaq 52 km · Samā’il 59 km · Adam 62 km · Sufālat Samā’il 65 km · Bidbid 81 km · Barkā’ 90 km

Oman travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type G
240 V · 50 Hz
Prices
≈ 47% of US
price level, 2025
GDP per capita
$19,947
2025
Happiness
6.2 / 10
World Happiness, 2025
Safe drinking water
91%
of population, 2024
Homicide rate
0.1
per 100k, 2023
Road deaths
10.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 407
Religion
Muslim 86%Christian 6%Hindu 6%other and unaffiliated 2%

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 Nizwa (22.9333°, 57.5333°, elevation 511 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).