Acornhoek weather in May

In May, Acornhoek sees average daytime highs of 26°C and overnight lows near 13°C, with 10 mm of rain across 2.2 wet days and about 10.8 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 26°C in the first days to 25°C by the end. The sky is clear or mostly clear about 75% of the time in May, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of May to 10 h 36 min by month's end. Set against the rest of the year, May is Acornhoek's 3rd-clearest and 12th-windiest month. For the whole year in context, see Acornhoek's year-round climate.

Daytime high
26°
9th warmest
Overnight low
13°
4th coldest
Rainfall
10 mm
2.2 wet days
Daylight
10 h 48 min
6:28 AM – 5:16 PM
Cloud cover
23%
3rd clearest
Wind
8 km/h
12th windiest
Solar energy
4.18 kWh/m²
Travel score
8.7
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 26°C in the first days to 25°C by the end.

A typical May day in Acornhoek reaches about 26°C in the afternoon and slips back to 13°C overnight — a 12°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, May runs about 1°C cooler than April and about 2°C warmer than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12615
22615
32615
42615
52615
62614
72614
82614
92614
102614
112614
122614
132614
142614
152613
162613
172613
182513
192513
202513
212513
222513
232512
242512
252512
262512
272512
282512
292512
302512
312511

Acornhoek weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 9th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 75% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 13%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18119
28218
38317
48416
58416
68515
78515
88614
98713
108614
118614
128713
138713
148713
158713
168614
178614
188614
198614
208614
218614
228713
238812
248812
258911
268911
278911
289010
299010
309010
318911

Chance of precipitation in May

Any precipitation

Acornhoek gets around 10 mm of rain over 2.2 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 7% and peaks near 12% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
112
211
311
410
510
610
79
89
99
108
118
128
138
147
157
167
177
186
196
206
216
226
235
245
255
264
274
284
294
304
314

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14642111
2484290
3514180
4534070
5543970
6573760
7593650
8613450
9643240
10653140
11672940
12702730
13712630
14742420
15752320
16772120
17792010
18811810
19821710
20831610
21851410
22861310
23871210
24891100
25901000
2692800
2793700
2894600
2994600
3095500
3196400

Wind in May

Winds average 8 km/h in May, the calmest month.

Across May, 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
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 06 min at the start of May to 10 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over May. Sunrise moves from 6:20 AM to 6:35 AM, and sunset from 5:26 PM to 5:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:205:26
211.16:205:25
311.16:215:24
411.06:215:23
511.06:225:23
611.06:225:22
711.06:235:21
811.06:235:21
910.96:245:20
1010.96:245:19
1110.96:255:19
1210.96:265:18
1310.96:265:18
1410.86:275:17
1510.86:275:17
1610.86:285:16
1710.86:285:16
1810.86:295:15
1910.86:295:15
2010.76:305:14
2110.76:305:14
2210.76:315:14
2310.76:315:13
2410.76:325:13
2510.76:325:13
2610.76:335:12
2710.66:335:12
2810.66:345:12
2910.66:345:11
3010.66:355:11
3110.66:355:11

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.18 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 January across the year — May's 4.18 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.0Bright
274.0Bright
284.0Bright
294.0Bright
304.0Moderate
314.0Moderate
Planning a trip in May

Hazard calendar for Acornhoek

In seasonPeak

None of Acornhoek's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 May a good time to visit Acornhoek?

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

8.7
Sightseeing
4th-best month of the year
8.0
Beach & pool
2nd-best month of the year

May is one of the better times to visit Acornhoek for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Acornhoek in May

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

In May, Acornhoek sees daytime highs around 26°C and nights near 13°C. Worth packing: light clothes.

light clothes

UV index in Acornhoek in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. 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 May

GoodModeratePoorUnhealthyVery unhealthy

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