Viljoenskroon weather in May

In May, Viljoenskroon sees average daytime highs of 22°C and overnight lows near 7°C, with 20 mm of rain across 3.2 wet days and about 10.7 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 21°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 hours at the start of May to 10 h 24 min by month's end. Set against the rest of the year, May is Viljoenskroon's 4th-clearest and 12th-windiest month. For the whole year in context, see Viljoenskroon's year-round climate.

Daytime high
22°
9th warmest
Overnight low
4th coldest
Rainfall
20 mm
3.2 wet days
Daylight
10 h 42 min
6:49 AM – 5:28 PM
Cloud cover
23%
4th clearest
Wind
9 km/h
12th windiest
Solar energy
4.24 kWh/m²
Travel score
8.5
out of 10

Viljoenskroon is place in Free State, South Africa.

Density
3,070/km²
people per km²

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 21°C by the end.

A typical May day in Viljoenskroon reaches about 22°C in the afternoon and slips back to 7°C overnight — a 16°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 26°C. Set against its neighbours, May runs about 3°C cooler than April and about 3°C warmer than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1249
2249
3239
4238
5238
6238
7238
8238
9238
10237
11237
12237
13237
14227
15227
16227
17226
18226
19226
20226
21226
22216
23215
24215
25215
26215
27215
28215
29214
30214
31204

How May really feels in Viljoenskroon

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Viljoenskroon weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 18°1001413.55.0
Feb29° / 17°8012.1135.4
Mar27° / 15°7010.912.26.5
Apr25° / 11°426.811.47.8
May22° / 203.210.78.5
Jun19° / 111.610.38.2
Jul19° / 60.910.58.4
Aug22° / 141.9118.8
Sep26° / 10°163.111.88.3
Oct28° / 13°629.112.76.8
Nov29° / 15°7311.213.35.7
Dec29° / 17°10414.313.75.0

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 14%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18515
28515
38515
48614
58614
68614
78614
88713
98713
108713
118713
128713
138614
148614
158614
168614
178614
188614
198416
208416
218416
228515
238614
248614
258614
268614
278713
288812
298812
308812
318812

Chance of precipitation in May

Any precipitation

Viljoenskroon gets around 20 mm of rain over 3.2 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 10% and peaks near 15% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
115
215
314
413
513
613
712
812
912
1011
1111
1211
1310
1410
1510
169
179
189
199
209
219
228
238
248
257
267
277
286
296
306
316

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in May

Winds average 9 km/h in May, the calmest month.

Across May, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 hours at the start of May to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over May. Sunrise moves from 6:40 AM to 6:57 AM, and sunset from 5:39 PM to 5:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:405:39
211.06:415:38
310.96:415:37
410.96:425:36
510.96:425:36
610.96:435:35
710.86:435:34
810.86:445:33
910.86:455:33
1010.86:455:32
1110.86:465:31
1210.76:465:31
1310.76:475:30
1410.76:475:29
1510.76:485:29
1610.76:495:28
1710.66:495:28
1810.66:505:27
1910.66:505:27
2010.66:515:26
2110.66:515:26
2210.66:525:25
2310.56:535:25
2410.56:535:25
2510.56:545:24
2610.56:545:24
2710.56:555:23
2810.56:555:23
2910.56:565:23
3010.46:565:23
3110.46:575:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.24 kWh/m².

For context, solar energy here swings from a low near 3.8 kWh/m² to a high of 7.26 kWh/m² in December across the year — May's 4.24 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.0Bright
274.0Bright
284.0Bright
294.0Moderate
304.0Moderate
314.0Moderate
Planning a trip in May

Hazard calendar for Viljoenskroon

In seasonPeak

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

Viljoenskroon'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 May a good time to visit Viljoenskroon?

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

8.5
Sightseeing
2nd-best month of the year
5.9
Beach & pool
10th-best month of the year

May is one of the better times to visit Viljoenskroon for general sightseeing.

What to pack for Viljoenskroon in May

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

In May, Viljoenskroon sees daytime highs around 22°C and nights near 7°C. Worth packing: light clothes and a warm layer. About 3 days see rain.

light clothesa warm layer

UV index in Viljoenskroon 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 Viljoenskroon peaks around January 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 5 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighHighVery highExtremeJan 13UV 15Jun 20UV 5
UV index (midday)Level
Jan15Extreme
Feb13Extreme
Mar12Extreme
Apr8Very high
May6High
Jun5Moderate
Jul5High
Aug7Very high
Sep9Very high
Oct10Extreme
Nov12Extreme
Dec14Extreme

Air quality in Viljoenskroon 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 Viljoenskroon is worst in June — around 57 µg/m³ PM2.5 (unhealthy), about 4.6× the cleanest month (December, 12 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJun 2257 µg/m³Dec 1913 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb19Moderate
Mar26Moderate
Apr34Moderate
May48Poor
Jun57Unhealthy
Jul56Unhealthy
Aug45Poor
Sep38Poor
Oct26Moderate
Nov15Moderate
Dec12Moderate
Location & terrain

Where is Viljoenskroon?

Viljoenskroon sits at 27.2°S, 26.9°E, 1,345 m above sea level, in South Africa. The nearest listed city is Orkney, 37 km away.

Topography around Viljoenskroon

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

Within 3 km, the terrain around Viljoenskroon has only modest variations in elevation — a maximum elevation change of 30 m around an average of 1,333 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 99 m; within 80 km, significant variations in elevation — a maximum elevation change of 445 m.

The land around Viljoenskroon is covered by cropland (61%) within 3 km, cropland (74%) and grassland (24%) within 16 km, and grassland (56%) and cropland (38%) within 80 km.

3 km
30 m
16 km
99 m
80 km
445 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Orkney 37 km · Bothaville 38 km · Stilfontein 44 km · Vredefort 47 km · Klerksdorp 48 km · Kroonstad 57 km · Potchefstroom 57 km · Parys 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 Viljoenskroon (-27.2084°, 26.9486°, elevation 1,345 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).