Diepsloot weather in December

In December, Diepsloot sees average daytime highs of 26°C and overnight lows near 16°C, with 117 mm of rain across 16.5 wet days and about 13.6 hours of daylight. It is the 3rd-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 30% 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 Diepsloot's 12th-clearest and 5th-windiest month. For the whole year in context, see Diepsloot's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
16°
10th coldest
Rainfall
117 mm
16.5 wet days
Daylight
13 h 36 min
5:16 AM – 6:53 PM
Cloud cover
57%
12th clearest
Wind
10 km/h
5th windiest
Solar energy
6.78 kWh/m²
Travel score
5.8
out of 10

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 Diepsloot reaches about 26°C in the afternoon and slips back to 16°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 30°C. Set against its neighbours, December runs on par with November and on par with January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12615
22615
32615
42615
52615
62615
72616
82616
92616
102616
112616
122616
132616
142616
152616
162616
172616
182616
192716
202716
212716
222716
232716
242716
252716
262716
272717
282717
292717
302717
312717

Diepsloot weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 17°10715.113.45.9
Feb27° / 16°9712.412.96.2
Mar25° / 15°8011.112.26.9
Apr23° / 12°376.411.47.7
May21° / 142.610.78.4
Jun19° / 71.110.48.2
Jul19° / 20.610.58.3
Aug22° / 81.411.18.8
Sep25° / 11°192.811.88.6
Oct26° / 14°619.312.67.1
Nov26° / 15°8512.613.36.3
Dec26° / 16°11716.513.65.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% 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 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45446
55446
65446
75545
85545
95545
105545
115545
125545
135644
145644
155644
165644
175644
185644
195743
205644
215644
225545
235545
245545
255545
265545
275545
285644
295743
305743
315743

Chance of precipitation in December

Any precipitation

Diepsloot gets around 117 mm of rain over 16.5 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 52% and peaks near 55% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
151
252
353
453
554
654
755
855
955
1055
1154
1254
1353
1453
1552
1652
1751
1851
1951
2051
2151
2251
2351
2452
2552
2652
2752
2851
2951
3050
3150

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 53% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1434710
2424810
3414910
4405010
5385111
6375211
7365311
8345412
9335512
10325513
11305614
12295714
13285715
14275815
15265816
16255817
17245818
18235819
19225820
20215722
21205723
22205525
23195526
24195427
25185329
26185230
27185131
28185032
29184933
30184833
31194834

Wind in December

Winds average 10 km/h in December.

Across December, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
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 5:13 AM to 5:23 AM, and sunset from 6:43 PM to 6:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:136:43
213.55:136:44
313.55:136:44
413.55:136:45
513.55:136:46
613.65:136:46
713.65:136:47
813.65:136:48
913.65:146:48
1013.65:146:49
1113.65:146:50
1213.65:146:50
1313.65:156:51
1413.65:156:51
1513.65:156:52
1613.65:166:53
1713.65:166:53
1813.65:166:54
1913.65:176:54
2013.65:176:55
2113.65:186:55
2213.65:186:56
2313.65:196:56
2413.65:196:57
2513.65:206:57
2613.65:206:57
2713.65:216:58
2813.65:216:58
2913.65:226:58
3013.65:226:59
3113.65:236:59

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.78 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.92 kWh/m² to a high of 6.78 kWh/m² in December across the year — December's 6.78 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
116.8Intense
126.8Intense
136.8Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.9Intense
196.9Intense
206.9Intense
216.9Intense
226.9Intense
236.9Intense
246.9Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.8Intense
306.8Intense
316.8Intense
Planning a trip in December

Hazard calendar for Diepsloot

In seasonPeak

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

Diepsloot'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 Diepsloot?

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

5.8
Sightseeing
12th-best month of the year
5.6
Beach & pool
8th-best month of the year

December is a reasonable time to visit Diepsloot for sightseeing.

What to pack for Diepsloot in December

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

In December, Diepsloot sees daytime highs around 26°C and nights near 16°C. Pack rain gear and sun protection. Worth having: light clothes. About 17 days see rain.

rain gearsun protectionlight clothes

UV index in Diepsloot 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 Diepsloot peaks around January 1 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 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 1UV 14Jun 18UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5Moderate
Jul6High
Aug7Very high
Sep9Very high
Oct11Extreme
Nov12Extreme
Dec14Extreme

Air quality in Diepsloot 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 Diepsloot is worst in June — around 283 µg/m³ PM2.5 (very unhealthy), about 5.7× the cleanest month (January, 50 µg/m³).

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

0306090120150180210240270300JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyUnhealthyJun 19282 µg/m³Jan 1251 µg/m³
PM2.5 (µg/m³)Level
Jan50Poor
Feb72Unhealthy
Mar119Unhealthy
Apr177Very unhealthy
May261Very unhealthy
Jun283Very unhealthy
Jul275Very unhealthy
Aug213Very unhealthy
Sep156Very unhealthy
Oct99Unhealthy
Nov70Unhealthy
Dec55Poor
Location & terrain

Where is Diepsloot?

Diepsloot sits at 25.9°S, 28.0°E, 1,410 m above sea level, in South Africa. The nearest listed city is Midrand, 12 km away.

Topography around Diepsloot

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

Within 3 km, the terrain around Diepsloot has only modest variations in elevation — a maximum elevation change of 187 m around an average of 1,416 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 443 m; within 80 km, large variations in elevation — a maximum elevation change of 934 m.

The land around Diepsloot is covered by grassland (56%) and artificial surfaces (26%) within 3 km, grassland (58%) and artificial surfaces (21%) within 16 km, and grassland (52%) within 80 km.

3 km
187 m
16 km
443 m
80 km
934 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Midrand 12 km · Randburg 18 km · Midstream 19 km · Centurion 19 km · Ivory Park 20 km · Alexandra 21 km · Thembisa 23 km · Hartbeespoort 27 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 Diepsloot (-25.9331°, 28.0121°, elevation 1,410 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).