Acornhoek weather in December

In December, Acornhoek sees average daytime highs of 29°C and overnight lows near 19°C, with 109 mm of rain across 12.6 wet days and about 13.5 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 25% of the time in December, and the air most often feels humid.

Daylight stretches from about 13 h 24 min at the start of December to 13 h 30 min by month's end. Set against the rest of the year, December is Acornhoek's 12th-clearest and 6th-windiest month. For the whole year in context, see Acornhoek's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
109 mm
12.6 wet days
Daylight
13 h 30 min
5:06 AM – 6:37 PM
Cloud cover
63%
12th clearest
Wind
9 km/h
6th windiest
Solar energy
5.98 kWh/m²
Travel score
5.2
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in Acornhoek reaches about 29°C in the afternoon and slips back to 19°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 34°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12819
22819
32819
42819
52819
62819
72919
82919
92919
102919
112919
122919
132919
142919
152919
162919
172920
182920
192920
202920
212920
222920
232920
242920
252920
263020
273020
283020
293020
303020
312920

Acornhoek weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°11011.913.45.1
Feb29° / 20°879.612.95.3
Mar29° / 19°618.912.26.1
Apr27° / 17°355.211.47.5
May26° / 13°102.210.88.7
Jun24° / 11°41.110.59.2
Jul23° / 10°5110.69.1
Aug25° / 12°81.611.18.9
Sep27° / 15°173.111.88.1
Oct27° / 17°37612.67.1
Nov28° / 18°8510.613.25.7
Dec29° / 19°10912.613.55.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23763
33763
43862
53862
63763
73961
83961
93862
103961
114159
124159
134258
144456
154456
164654
174654
184852
194852
204951
214951
224951
234951
244951
255050
265050
275050
285050
295050
305050
315050

Chance of precipitation in December

Any precipitation

Acornhoek gets around 109 mm of rain over 12.6 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 40% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
339
439
540
641
741
842
942
1042
1142
1242
1342
1442
1542
1641
1741
1840
1940
2040
2139
2239
2339
2439
2539
2639
2739
2839
2939
3038
3138

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 46% of days. Sticky, muggy-or-worse air turns up on roughly 30% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1102843190
292844190
392745190
482746200
582646200
672547200
762448210
862348220
952348231
1052249241
1142249251
1232248261
1332148261
1432148271
1522148281
1622048291
1722048292
1821947302
1911947312
2011847322
2111846332
2211746342
2311746343
2411645353
2511545363
2611545373
2711444383
2811444383
2911444393
3011443393
3111443393

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 24 min at the start of December to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:03 AM to 5:14 AM, and sunset from 6:28 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:036:28
213.45:036:29
313.45:036:29
413.45:036:30
513.55:036:31
613.55:046:31
713.55:046:32
813.55:046:32
913.55:046:33
1013.55:046:34
1113.55:056:34
1213.55:056:35
1313.55:056:36
1413.55:066:36
1513.55:066:37
1613.55:066:37
1713.55:076:38
1813.55:076:38
1913.55:076:39
2013.55:086:39
2113.55:086:40
2213.55:096:40
2313.55:096:41
2413.55:106:41
2513.55:106:42
2613.55:116:42
2713.55:116:43
2813.55:126:43
2913.55:126:43
3013.55:136:44
3113.55:146:44

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.98 kWh/m².

For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 5.99 kWh/m² in January across the year — December's 5.98 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
166.0Bright
176.0Bright
186.0Intense
196.0Intense
206.0Intense
216.0Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in December

Hazard calendar for Acornhoek

In seasonPeak

In December, Acornhoek sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Acornhoek's rainy season runs November–March, when most of the year's rain falls.

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

Is December a good time to visit Acornhoek?

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

5.2
Sightseeing
11th-best month of the year
6.5
Beach & pool
12th-best month of the year

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

What to pack for Acornhoek in December

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

In December, Acornhoek sees daytime highs around 29°C and nights near 19°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Acornhoek in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Acornhoek peaks around January 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeJan 20UV 14Jun 20UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr8Very high
May6High
Jun5Moderate
Jul5High
Aug7Very high
Sep8Very high
Oct10Very high
Nov12Extreme
Dec12Extreme

Air quality in Acornhoek 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 Acornhoek is worst in July — around 40 µg/m³ PM2.5 (poor), about 2.9× the cleanest month (December, 14 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateJul 2039 µg/m³Dec 2314 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb15Moderate
Mar20Moderate
Apr26Moderate
May35Poor
Jun36Poor
Jul40Poor
Aug38Poor
Sep30Moderate
Oct20Moderate
Nov20Moderate
Dec14Moderate
Location & terrain

Where is Acornhoek?

Acornhoek sits at 24.6°S, 31.1°E, 645 m above sea level, in South Africa. The nearest listed city is Thulamahashi, 19 km away.

Topography around Acornhoek

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

Within 3 km, the terrain around Acornhoek has only modest variations in elevation — a maximum elevation change of 140 m around an average of 628 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 459 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,498 m.

The land around Acornhoek is covered by artificial surfaces (40%) and grassland (38%) within 3 km, grassland (33%), trees (27%) and shrubs (27%) within 16 km, and shrubs (39%), grassland (37%) and trees (20%) within 80 km.

3 km
140 m
16 km
459 m
80 km
2,498 m
treesshrubsgrasslandcroplandartificial surfaces
December weather nearby: Thulamahashi 19 km · Mafemani 22 km · Dwarsloop 23 km · Hlanganani 42 km · Calcutta 46 km · Mkhuhlu 47 km · Sabie 65 km · Phalaborwa 72 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 Acornhoek (-24.5878°, 31.0947°, elevation 645 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).