Redhill weather in January

In January, Redhill sees average daytime highs of 25°C and overnight lows near 15°C, with 147 mm of rain across 18 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 24% of the time in January, and the air most often feels comfortable.

Daylight stretches from about 13 h 36 min at the start of January to 13 h 12 min by month's end. Set against the rest of the year, January is Redhill's 10th-clearest and 9th-windiest month. For the whole year in context, see Redhill's year-round climate.

Daytime high
25°
1st warmest
Overnight low
15°
12th coldest
Rainfall
147 mm
18 wet days
Daylight
13 h 30 min
5:22 AM – 6:50 PM
Cloud cover
64%
10th clearest
Wind
7 km/h
9th windiest
Solar energy
5.96 kWh/m²
Travel score
5.7
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical January day in Redhill reaches about 25°C in the afternoon and slips back to 15°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 28°C. Set against its neighbours, January runs on par with December and on par with February.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12515
22515
32515
42515
52515
62515
72515
82515
92515
102515
112515
122415
132415
142415
152415
162415
172415
182415
192415
202415
212415
222515
232515
242515
252515
262515
272515
282515
292515
302515
312515

Redhill weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 15°1471813.55.7
Feb25° / 15°11313.912.96.1
Mar24° / 13°10313.412.26.6
Apr22° / 11°458.411.47.1
May20° / 183.310.78.0
Jun18° / 91.510.47.9
Jul18° / 81.510.57.8
Aug20° / 143.211.18.0
Sep23° / 326.211.87.8
Oct23° / 11°8113.812.66.3
Nov23° / 13°12718.413.35.5
Dec24° / 14°15119.513.65.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 17% of January, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24258
34258
44258
54357
64357
74258
84258
94258
104258
114258
124060
134060
143961
153862
163961
173961
183961
193961
203862
213961
223961
234060
244060
254159
264258
274456
284456
294555
304654
314753

Chance of precipitation in January

Any precipitation

Redhill gets around 147 mm of rain over 18 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 58% and peaks near 60% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
160
260
359
459
559
659
759
858
958
1058
1158
1258
1358
1458
1558
1658
1759
1859
1958
2058
2158
2258
2357
2457
2556
2656
2756
2855
2955
3054
3154

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the comfortable band about 44% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11245430
21245430
31345420
41345420
51345420
61345420
71345420
81344420
91344420
101344420
111344420
121344420
131344420
141344430
151344430
161343440
171243440
181243450
191243450
201243460
211143460
221143460
231143460
241043460
251043460
261044460
27944460
28944460
29944461
30945461
31945451

Wind in January

Winds average 7 km/h in January.

Across January, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
138calm
148calm
158calm
168calm
178calm
188calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 h 36 min at the start of January to 13 h 12 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 5:11 AM to 5:33 AM, and sunset from 6:48 PM to 6:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:116:48
213.65:126:49
313.65:136:49
413.65:136:49
513.65:146:49
613.65:156:50
713.65:156:50
813.65:166:50
913.65:176:50
1013.55:176:50
1113.55:186:50
1213.55:196:50
1313.55:196:50
1413.55:206:50
1513.55:216:50
1613.55:226:50
1713.55:226:50
1813.55:236:50
1913.45:246:50
2013.45:256:50
2113.45:256:50
2213.45:266:50
2313.45:276:50
2413.45:286:49
2513.35:286:49
2613.35:296:49
2713.35:306:49
2813.35:316:48
2913.35:316:48
3013.35:326:48
3113.25:336:47

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.96 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 December across the year — January's 5.96 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.0Intense
96.0Intense
106.0Intense
116.0Bright
126.0Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
306.0Bright
316.0Bright
Planning a trip in January

Hazard calendar for Redhill

In seasonPeak

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

Redhill'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 January a good time to visit Redhill?

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

5.7
Sightseeing
10th-best month of the year
5.0
Beach & pool
4th-best month of the year

January is a reasonable time to visit Redhill for sightseeing.

What to pack for Redhill in January

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

In January, Redhill sees daytime highs around 25°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 18 days see rain.

rain gearlight clothessun protection

UV index in Redhill 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 Redhill peaks around January 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 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 12UV 14Jun 21UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr8Very high
May6High
Jun5High
Jul5High
Aug7Very high
Sep9Very high
Oct10Very high
Nov12Extreme
Dec14Extreme

Air quality in Redhill 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 Redhill is worst in November — around 46 µg/m³ PM2.5 (poor), about 2.5× the cleanest month (December, 18 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModerateModeratePoorModeratePoorModerateNov 1543 µg/m³Dec 2219 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb21Moderate
Mar28Moderate
Apr36Poor
May31Moderate
Jun35Moderate
Jul40Poor
Aug41Poor
Sep33Moderate
Oct26Moderate
Nov46Poor
Dec18Moderate
Location & terrain

Where is Redhill?

Redhill sits at 26.3°S, 30.8°E, 1,630 m above sea level, in South Africa. The nearest listed city is Empuluzu, 7.0 km away.

Topography around Redhill

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

Within 3 km, the terrain around Redhill has significant variations in elevation — a maximum elevation change of 271 m around an average of 1,564 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 723 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,759 m.

The land around Redhill is covered by grassland (67%) within 3 km, grassland (68%) and trees (24%) within 16 km, and grassland (53%) and trees (32%) within 80 km.

3 km
271 m
16 km
723 m
80 km
1,759 m
treesshrubsgrasslandcroplandartificial surfaces
January weather nearby: Empuluzu 7.0 km · Fernie 15 km · Lukwatini 23 km · Nhlazatje 25 km · Mbabane 31 km · Lobamba 44 km · Barberton 57 km · Manzini 61 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 Redhill (-26.2607°, 30.8255°, elevation 1,630 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).