Benoni weather in December

In December, Benoni sees average daytime highs of 26°C and overnight lows near 15°C, with 130 mm of rain across 17.3 wet days and about 13.6 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 28% of the time in December, and the air most often feels comfortable.

Daylight stretches from about 13 h 30 min at the start of December to 13 h 36 min by month's end. Set against the rest of the year, December is Benoni's 12th-clearest and 5th-windiest month. For the whole year in context, see Benoni's year-round climate.

Daytime high
26°
2nd warmest
Overnight low
15°
10th coldest
Rainfall
130 mm
17.3 wet days
Daylight
13 h 36 min
5:14 AM – 6:52 PM
Cloud cover
59%
12th clearest
Wind
11 km/h
5th windiest
Solar energy
6.76 kWh/m²
Travel score
5.7
out of 10

Benoni is Town in the Ekurhuleni Metropolitan Municipality in Gauteng, South Africa.

Founded
1881

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical December day in Benoni reaches about 26°C in the afternoon and slips back to 15°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 30°C. Set against its neighbours, December runs on par with November and on par with January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12514
22514
32514
42515
52515
62515
72515
82515
92515
102515
112515
122515
132615
142615
152615
162615
172615
182615
192615
202615
212615
222616
232616
242616
252616
262616
272616
282616
292616
302616
312616

Benoni weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 16°12715.913.55.9
Feb26° / 15°10213.112.96.2
Mar24° / 14°831212.26.9
Apr22° / 11°426.711.47.5
May21° / 152.510.78.2
Jun18° / 81.410.48.0
Jul18° / 30.710.58.1
Aug21° / 10211.18.6
Sep25° / 10°233.511.88.5
Oct25° / 13°7710.712.67.0
Nov25° / 14°9914.313.36.2
Dec26° / 15°13017.313.65.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 25% of December, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25248
35248
45248
55248
65248
75248
85347
95347
105446
115446
125446
135446
145545
155446
165545
175545
185446
195446
205347
215347
225347
235248
245248
255248
265248
275248
285347
295347
305347
315545

Chance of precipitation in December

Any precipitation

Benoni gets around 130 mm of rain over 17.3 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 55% and peaks near 58% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
154
255
356
457
557
657
758
858
958
1058
1157
1257
1356
1456
1555
1654
1754
1853
1953
2053
2153
2254
2354
2454
2555
2655
2755
2855
2955
3054
3154

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the comfortable band about 55% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
149465
248476
346486
445496
543516
642517
741527
839547
938548
1037558
1136568
1234579
1333589
1432599
15315910
16305911
17295912
18285913
19275914
20265915
21255817
22255718
23245620
24235621
25225622
26225523
27215524
28215425
29215326
30215227
31215128

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3110calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 30 min at the start of December to 13 h 36 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 5:11 AM to 5:21 AM, and sunset from 6:42 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:116:42
213.55:116:43
313.55:116:44
413.65:116:44
513.65:116:45
613.65:116:46
713.65:116:46
813.65:126:47
913.65:126:48
1013.65:126:48
1113.65:126:49
1213.65:136:49
1313.65:136:50
1413.65:136:51
1513.65:146:51
1613.65:146:52
1713.65:146:52
1813.65:156:53
1913.65:156:53
2013.65:166:54
2113.65:166:54
2213.65:166:55
2313.65:176:55
2413.65:176:56
2513.65:186:56
2613.65:186:57
2713.65:196:57
2813.65:206:57
2913.65:206:58
3013.65:216:58
3113.65:216:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.76 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.91 kWh/m² to a high of 6.76 kWh/m² in December across the year — December's 6.76 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.7Intense
116.7Intense
126.7Intense
136.8Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.8Intense
306.8Intense
316.8Intense
Planning a trip in December

Hazard calendar for Benoni

In seasonPeak

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

Benoni's rainy season runs October–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 Benoni?

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

5.7
Sightseeing
12th-best month of the year
5.4
Beach & pool
8th-best month of the year

December is a reasonable time to visit Benoni for sightseeing.

What to pack for Benoni in December

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

In December, Benoni sees daytime highs around 26°C and nights near 15°C. Pack rain gear and sun protection. Worth having: light clothes. About 17 days see rain.

rain gearsun protectionlight clothes

UV index in Benoni 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 Benoni peaks around December 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 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 highExtremeDec 23UV 14Jun 19UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5High
Jul6High
Aug7Very high
Sep9Very high
Oct11Extreme
Nov12Extreme
Dec14Extreme

Air quality in Benoni 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 Benoni is worst in June — around 259 µg/m³ PM2.5 (very unhealthy), about 6.0× the cleanest month (January, 43 µg/m³).

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

0306090120150180210240270JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyVery unhealthyUnhealthyPoorJun 23259 µg/m³Jan 1344 µg/m³
PM2.5 (µg/m³)Level
Jan43Poor
Feb63Unhealthy
Mar101Unhealthy
Apr158Very unhealthy
May232Very unhealthy
Jun259Very unhealthy
Jul259Very unhealthy
Aug200Very unhealthy
Sep144Unhealthy
Oct91Unhealthy
Nov65Unhealthy
Dec50Poor
Location & terrain

Where is Benoni?

Benoni sits at 26.2°S, 28.3°E, 1,641 m above sea level, in South Africa. The nearest listed city is Boksburg, 7.0 km away.

Topography around Benoni

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

Within 3 km, the terrain around Benoni has only modest variations in elevation — a maximum elevation change of 97 m around an average of 1,644 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 259 m; within 80 km, large variations in elevation — a maximum elevation change of 816 m.

The land around Benoni is covered by artificial surfaces (50%) and grassland (28%) within 3 km, grassland (41%) and artificial surfaces (37%) within 16 km, and grassland (54%) and cropland (25%) within 80 km.

3 km
97 m
16 km
259 m
80 km
816 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Boksburg 7.0 km · Brakpan 7.0 km · Springs 10 km · Etwatwa 15 km · Germiston 15 km · Edenvale 18 km · Alberton 22 km · Thembisa 23 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 Benoni (-26.1885°, 28.3208°, elevation 1,641 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).