De Aar weather in December

In December, De Aar sees average daytime highs of 31°C and overnight lows near 16°C, with 37 mm of rain across 5.2 wet days and about 13.9 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 30°C in the first days to 31°C by the end. The sky is clear or mostly clear about 68% of the time in December, and the air most often feels dry.

Daylight stretches from about 13 h 48 min at the start of December to 14 hours by month's end. Set against the rest of the year, December is De Aar's 5th-clearest and 1st-windiest month. For the whole year in context, see De Aar's year-round climate.

Daytime high
31°
2nd warmest
Overnight low
16°
10th coldest
Rainfall
37 mm
5.2 wet days
Daylight
14 hours
5:21 AM – 7:19 PM
Cloud cover
28%
5th clearest
Wind
17 km/h
1st windiest
Solar energy
8.54 kWh/m²
Travel score
5.6
out of 10

De Aar is town in the Northern Cape, South Africa.

Density
378/km²
people per km²
Founded
1903

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 30°C in the first days to 31°C by the end.

A typical December day in De Aar reaches about 31°C in the afternoon and slips back to 16°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 35°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
13015
23015
33015
43015
53015
63015
73015
83015
93015
103015
113016
123116
133116
143116
153116
163116
173116
183116
193116
203116
213116
223116
233116
243117
253117
263117
273117
283117
293217
303217
313217

How December really feels in De Aar

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.

De Aar weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 17°567.213.85.0
Feb31° / 17°477.713.15.2
Mar28° / 15°48712.26.7
Apr24° / 11°31511.38.1
May20° / 193.110.57.8
Jun17° / 142.510.16.7
Jul17° / 102.110.26.8
Aug19° / 112.310.97.8
Sep23° / 142.111.88.6
Oct26° / 11°243.712.88.2
Nov28° / 13°334.613.67.2
Dec31° / 16°375.213.95.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 68% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38218
48218
58218
68317
78317
88317
98416
108416
118416
128515
138416
148416
158515
168515
178515
188515
198515
208515
218515
228515
238614
248614
258614
268614
278614
288614
298614
308614
318614

Chance of precipitation in December

Any precipitation

De Aar gets around 37 mm of rain over 5.2 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 17% and peaks near 19% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
116
216
316
416
517
617
717
817
917
1018
1118
1218
1318
1418
1518
1617
1717
1817
1917
2017
2117
2217
2317
2417
2517
2617
2717
2817
2918
3018
3119

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 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19541
29541
39541
49451
59451
69451
79451
89451
99451
109451
119451
129451
139361
149361
159361
169361
179361
189361
199361
209271
219271
229172
239172
249172
259172
269172
278983
288983
298893
308794
3186104

Wind in December

Winds average 17 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 17 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 48 min at the start of December to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over December. Sunrise moves from 5:19 AM to 5:28 AM, and sunset from 7:09 PM to 7:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:197:09
213.95:187:10
313.95:197:10
413.95:197:11
513.95:197:12
613.95:197:13
713.95:197:13
813.95:197:14
913.95:197:15
1013.95:197:16
1113.95:207:16
1214.05:207:17
1314.05:207:17
1414.05:207:18
1514.05:217:19
1614.05:217:19
1714.05:217:20
1814.05:227:20
1914.05:227:21
2014.05:227:21
2114.05:237:22
2214.05:237:22
2314.05:247:23
2414.05:247:23
2514.05:257:24
2614.05:257:24
2714.05:267:25
2814.05:277:25
2914.05:277:25
3014.05:287:26
3114.05:287:26

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 8.54 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.35 kWh/m² to a high of 8.54 kWh/m² in December across the year — December's 8.54 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.5Intense
28.5Intense
38.5Intense
48.5Intense
58.5Intense
68.5Intense
78.5Intense
88.5Intense
98.5Intense
108.5Intense
118.5Intense
128.6Intense
138.6Intense
148.6Intense
158.6Intense
168.6Intense
178.6Intense
188.6Intense
198.6Intense
208.6Intense
218.6Intense
228.6Intense
238.6Intense
248.5Intense
258.5Intense
268.5Intense
278.5Intense
288.5Intense
298.5Intense
308.5Intense
318.5Intense
Planning a trip in December

Is December a good time to visit De Aar?

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

5.6
Sightseeing
10th-best month of the year
7.9
Beach & pool
2nd-best month of the year

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

What to pack for De Aar in December

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

In December, De Aar sees daytime highs around 31°C and nights near 16°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in De Aar in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in De Aar peaks around January 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 14UV 15Jun 21UV 4
UV index (midday)Level
Jan15Extreme
Feb13Extreme
Mar11Extreme
Apr7High
May5High
Jun4Moderate
Jul4Moderate
Aug6High
Sep8Very high
Oct12Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is De Aar?

De Aar sits at 30.6°S, 24.0°E, 1,247 m above sea level, in South Africa. The nearest listed city is Middelburg, 133 km away.

Graaff ReinetBurgersdorpKimberleyCradockBeaufort WestAliwal NorthBloemfontein

Topography around De Aar

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

Within 3 km, the terrain around De Aar has only modest variations in elevation — a maximum elevation change of 132 m around an average of 1,251 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 348 m; within 80 km, large variations in elevation — a maximum elevation change of 918 m.

The land around De Aar is covered by grassland (50%) and artificial surfaces (25%) within 3 km, grassland (83%) within 16 km, and grassland (89%) within 80 km.

3 km
132 m
16 km
348 m
80 km
918 m
shrubsgrasslandartificial surfacesbare terrain
December weather nearby: Middelburg 133 km · Graaff Reinet 185 km · Burgersdorp 225 km · Kimberley 225 km · Cradock 227 km · Beaufort West 233 km · Aliwal North 258 km · Bloemfontein 272 km

South Africa travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / M / N
230 V · 50 Hz
Prices
≈ 41% of US
price level, 2025
GDP per capita
$6,598
2025
Happiness
5.0 / 10
World Happiness, 2025
Safe drinking water
68%
of population, 2024
Homicide rate
43.7
per 100k, 2022
Road deaths
22.2
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very high
EF EPI 602
Religion
Christian 86%or other traditional African religions 5%nothing in particular 5%Muslim 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 De Aar (-30.6497°, 24.0123°, elevation 1,247 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).