Acornhoek weather in January

In January, Acornhoek sees average daytime highs of 29°C and overnight lows near 20°C, with 110 mm of rain across 11.9 wet days and about 13.4 hours of daylight. It is the 2nd-warmest and 1st-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 29% of the time in January, and the air most often feels humid.

Daylight stretches from about 13 h 30 min at the start of January to 13 h 06 min by month's end. Set against the rest of the year, January is Acornhoek's 10th-clearest and 3rd-windiest month. For the whole year in context, see Acornhoek's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
20°
12th coldest
Rainfall
110 mm
11.9 wet days
Daylight
13 h 24 min
5:24 AM – 6:46 PM
Cloud cover
58%
10th clearest
Wind
10 km/h
3rd windiest
Solar energy
5.99 kWh/m²
Travel score
5.1
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in Acornhoek reaches about 29°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 34°C. Set against its neighbours, January runs on par with December and on par with February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12920
22920
32920
42920
52920
62920
72920
82920
92920
102920
112920
122920
132920
142920
152920
162920
172920
182920
192920
202920
212920
222920
232920
242920
252920
262920
272920
282920
292920
302920
312920

Acornhoek weather by month

How January compares with the rest of the year at a glance. January 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
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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 21% of January, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45149
55149
65248
75248
85149
95149
105050
115050
124951
134852
144852
154852
164951
174951
184951
194951
204951
215050
225050
235149
245149
255149
265248
275347
285446
295446
305545
315545

Chance of precipitation in January

Any precipitation

Acornhoek gets around 110 mm of rain over 11.9 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
438
538
638
738
838
938
1039
1139
1239
1340
1440
1540
1640
1740
1840
1940
2040
2140
2240
2339
2439
2538
2638
2738
2838
2938
3037
3137

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the humid band about 41% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
111443393
211442393
311442393
411442403
511441403
611441403
711441403
811441413
911441413
1021341413
1121341413
1221341413
1321341413
1421241423
1521241423
1621241423
1721241423
1821241433
1921141433
2021141434
2121141434
2221141424
2321141424
2411141424
2511141424
2611142425
2711142425
2811142425
2911142425
3011042425
3111043415

Wind in January

Winds average 10 km/h in January.

Across January, 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
19calm
29calm
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 January

DaylightNight

Daylight runs from about 13 h 30 min at the start of January to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over January. Sunrise moves from 5:14 AM to 5:35 AM, and sunset from 6:44 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:146:44
213.55:146:44
313.55:156:44
413.55:166:45
513.55:166:45
613.55:176:45
713.55:186:45
813.55:186:45
913.45:196:46
1013.45:206:46
1113.45:206:46
1213.45:216:46
1313.45:226:46
1413.45:226:46
1513.45:236:46
1613.45:246:46
1713.45:256:46
1813.35:256:46
1913.35:266:46
2013.35:276:46
2113.35:276:46
2213.35:286:46
2313.35:296:45
2413.35:306:45
2513.25:306:45
2613.25:316:45
2713.25:326:45
2813.25:326:44
2913.25:336:44
3013.25:346:44
3113.15:356:43

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.99 kWh/m² — the sunniest month for solar.

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 — January's 5.99 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.0Intense
106.0Intense
116.0Intense
126.0Bright
136.0Bright
146.0Bright
156.0Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
286.0Bright
296.0Bright
306.0Bright
316.0Bright
Planning a trip in January

Hazard calendar for Acornhoek

In seasonPeak

In January, 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 January a good time to visit Acornhoek?

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

5.1
Sightseeing
12th-best month of the year
6.7
Beach & pool
11th-best month of the year

January 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 January

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

In January, Acornhoek sees daytime highs around 29°C and nights near 20°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Acornhoek in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).