Delmas weather in January

In January, Delmas sees average daytime highs of 26°C and overnight lows near 15°C, with 128 mm of rain across 16.2 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 26°C through the month. The sky is clear or mostly clear about 34% 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 Delmas's 10th-clearest and 8th-windiest month. For the whole year in context, see Delmas's year-round climate.

Daytime high
26°
1st warmest
Overnight low
15°
12th coldest
Rainfall
128 mm
16.2 wet days
Daylight
13 h 30 min
5:30 AM – 6:59 PM
Cloud cover
55%
10th clearest
Wind
10 km/h
8th windiest
Solar energy
6.59 kWh/m²
Travel score
5.9
out of 10

Delmas is South African town in Mpumalanga.

Density
10,532/km²
people per km²
Founded
1907

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in Delmas reaches about 26°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 22°C and 29°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)
12615
22615
32615
42615
52615
62615
72615
82615
92615
102615
112615
122615
132615
142615
152615
162615
172515
182515
192515
202515
212615
222615
232615
242615
252615
262615
272615
282615
292615
302615
312615

Delmas 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
Jan26° / 15°12816.213.55.9
Feb26° / 15°10512.912.96.2
Mar25° / 14°8911.212.27.0
Apr23° / 11°406.611.47.6
May21° / 152.610.78.2
Jun18° / 71.110.48.1
Jul18° / 40.710.58.1
Aug21° / 112.111.18.5
Sep25° / 10°243.411.88.5
Oct25° / 12°8310.812.67.0
Nov25° / 14°1041413.36.2
Dec25° / 15°13817.513.65.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 23% of January, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25743
35743
45743
55842
65842
75842
85842
95842
105842
115743
125743
135644
145743
155644
165644
175644
185644
195644
205644
215644
225743
235743
245743
255842
265842
275842
285941
296040
306040
316040

Chance of precipitation in January

Any precipitation

Delmas gets around 128 mm of rain over 16.2 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 52% and peaks near 55% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
153
252
352
451
551
650
750
850
950
1050
1150
1250
1351
1451
1552
1652
1753
1853
1953
2054
2154
2254
2355
2455
2555
2655
2754
2854
2953
3052
3152

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 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1205030
2205030
3214930
4214930
5224929
6224929
7224929
8234929
9234929
10224929
11224929
12224929
13214930
14214930
15204931
16204931
17194931
18185032
19185032
20175132
21165133
22165133
23165133
24155134
25155134
26155134
27165133
28165133
29165232
30175132
31175231

Wind in January

Winds average 10 km/h in January.

Across January, daily wind ranges from about 10 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
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 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 5:20 AM to 5:42 AM, and sunset from 6:57 PM to 6:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:206:57
213.65:216:57
313.65:216:57
413.65:226:58
513.65:236:58
613.65:236:58
713.65:246:58
813.65:256:58
913.65:256:58
1013.55:266:59
1113.55:276:59
1213.55:276:59
1313.55:286:59
1413.55:296:59
1513.55:306:59
1613.55:306:59
1713.55:316:59
1813.45:326:59
1913.45:336:58
2013.45:336:58
2113.45:346:58
2213.45:356:58
2313.45:366:58
2413.45:366:58
2513.35:376:57
2613.35:386:57
2713.35:396:57
2813.35:396:57
2913.35:406:56
3013.25:416:56
3113.25:426:56

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 6.59 kWh/m².

For context, solar energy here swings from a low near 3.92 kWh/m² to a high of 6.71 kWh/m² in December across the year — January's 6.59 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.8Intense
46.8Intense
56.7Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.7Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in January

Hazard calendar for Delmas

In seasonPeak

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

Delmas'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 Delmas?

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

5.9
Sightseeing
11th-best month of the year
5.5
Beach & pool
7th-best month of the year

January is a reasonable time to visit Delmas for sightseeing.

What to pack for Delmas in January

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

In January, Delmas sees daytime highs around 26°C and nights near 15°C. Pack rain gear and sun protection. Worth having: light clothes. About 16 days see rain.

rain gearsun protectionlight clothes

UV index in Delmas 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 Delmas peaks around January 1 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 highExtremeJan 1UV 14Jun 19UV 5
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar12Extreme
Apr9Very high
May6High
Jun5High
Jul6High
Aug7Very high
Sep9Very high
Oct10Extreme
Nov12Extreme
Dec14Extreme

Air quality in Delmas 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 Delmas 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 Delmas?

Delmas sits at 26.1°S, 28.7°E, 1,558 m above sea level, in South Africa. The nearest listed city is Etwatwa, 23 km away.

Topography around Delmas

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

Within 3 km, the terrain around Delmas has only modest variations in elevation — a maximum elevation change of 57 m around an average of 1,559 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 191 m; within 80 km, large variations in elevation — a maximum elevation change of 795 m.

The land around Delmas is covered by cropland (46%) and grassland (33%) within 3 km, cropland (59%) and grassland (35%) within 16 km, and grassland (56%) and cropland (28%) within 80 km.

3 km
57 m
16 km
191 m
80 km
795 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Etwatwa 23 km · Springs 31 km · Brakpan 33 km · Leslie 34 km · Lebohang 35 km · Benoni 36 km · Nigel 38 km · Bronkhorstspruit 38 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 Delmas (-26.1466°, 28.6832°, elevation 1,558 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).