Hennenman weather in May

In May, Hennenman sees average daytime highs of 21°C and overnight lows near 6°C, with 21 mm of rain across 3.3 wet days and about 10.6 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 20°C by the end. The sky is clear or mostly clear about 74% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of May to 10 h 24 min by month's end. Set against the rest of the year, May is Hennenman's 4th-clearest and 12th-windiest month. For the whole year in context, see Hennenman's year-round climate.

Daytime high
21°
9th warmest
Overnight low
4th coldest
Rainfall
21 mm
3.3 wet days
Daylight
10 h 36 min
6:50 AM – 5:27 PM
Cloud cover
24%
4th clearest
Wind
9 km/h
12th windiest
Solar energy
4.16 kWh/m²
Travel score
8.2
out of 10

Hennenman is town in the Free State, South Africa.

Founded
1927

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 22°C in the first days to 20°C by the end.

A typical May day in Hennenman reaches about 21°C in the afternoon and slips back to 6°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 25°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)
1239
2238
3238
4228
5228
6228
7228
8228
9227
10227
11227
12227
13227
14227
15217
16216
17216
18216
19216
20216
21216
22216
23215
24205
25205
26205
27205
28204
29204
30204
31204

How May really feels in Hennenman

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.

Hennenman 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° / 17°10013.713.65.1
Feb29° / 17°7911.9135.6
Mar27° / 15°7110.512.26.7
Apr24° / 11°48711.47.8
May21° / 213.310.68.2
Jun18° / 121.810.37.9
Jul18° / 7110.48.1
Aug21° / 162118.6
Sep25° / 10°142.611.88.6
Oct27° / 13°567.812.77.2
Nov28° / 14°719.213.46.2
Dec29° / 16°10113.713.75.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 74% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18317
28515
38515
48515
58614
68614
78614
88614
98614
108614
118614
128614
138614
148614
158515
168515
178515
188416
198317
208317
218317
228416
238416
248515
258515
268614
278713
288713
298713
308812
318812

Chance of precipitation in May

Any precipitation

Hennenman gets around 21 mm of rain over 3.3 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 16% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
116
216
315
415
515
614
714
814
913
1013
1112
1211
1311
1410
1510
169
179
189
198
208
218
228
237
247
257
266
276
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
21000
31000
41000
51000
61000
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 10 h 54 min 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 30 minutes over May. Sunrise moves from 6:41 AM to 6:58 AM, and sunset from 5:38 PM to 5:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.96:415:38
210.96:415:37
310.96:425:36
410.96:425:35
510.96:435:34
610.86:445:33
710.86:445:33
810.86:455:32
910.86:455:31
1010.76:465:30
1110.76:475:30
1210.76:475:29
1310.76:485:28
1410.76:485:28
1510.66:495:27
1610.66:505:27
1710.66:505:26
1810.66:515:26
1910.66:515:25
2010.56:525:25
2110.56:535:24
2210.56:535:24
2310.56:545:23
2410.56:545:23
2510.56:555:22
2610.46:555:22
2710.46:565:22
2810.46:575:21
2910.46:575:21
3010.46:585:21
3110.46:585:20

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.16 kWh/m².

For context, solar energy here swings from a low near 3.72 kWh/m² to a high of 7.46 kWh/m² in December across the year — May's 4.16 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.0Bright
224.0Bright
234.0Bright
244.0Moderate
254.0Moderate
264.0Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
313.9Moderate
Planning a trip in May

Hazard calendar for Hennenman

In seasonPeak

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

Hennenman's rainy season runs October–April, 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 Hennenman?

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

8.2
Sightseeing
3rd-best month of the year
5.1
Beach & pool
10th-best month of the year

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

What to pack for Hennenman in May

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

In May, Hennenman sees daytime highs around 21°C and nights near 6°C. Worth packing: a warm layer. About 3 days see rain.

a warm layer

UV index in Hennenman 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 Hennenman peaks around January 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateHighVery highExtremeJan 14UV 15Jun 21UV 5
UV index (midday)Level
Jan15Extreme
Feb13Extreme
Mar11Extreme
Apr8Very high
May6High
Jun5Moderate
Jul5Moderate
Aug7High
Sep9Very high
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Hennenman 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 Hennenman is worst in July — around 32 µg/m³ PM2.5 (moderate), about 3.8× the cleanest month (December, 9 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1432 µg/m³Dec 179 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar17Moderate
Apr20Moderate
May27Moderate
Jun30Moderate
Jul32Moderate
Aug28Moderate
Sep25Moderate
Oct17Moderate
Nov10Good
Dec9Good
Location & terrain

Where is Hennenman?

Hennenman sits at 28.0°S, 27.0°E, 1,396 m above sea level, in South Africa. The nearest listed city is Phomolong, 7.0 km away.

Topography around Hennenman

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

Within 3 km, the terrain around Hennenman has only modest variations in elevation — a maximum elevation change of 63 m around an average of 1,393 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 185 m; within 80 km, significant variations in elevation — a maximum elevation change of 592 m.

The land around Hennenman is covered by cropland (46%) and grassland (41%) within 3 km, cropland (55%) and grassland (43%) within 16 km, and grassland (58%) and cropland (40%) within 80 km.

3 km
63 m
16 km
185 m
80 km
592 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Phomolong 7.0 km · Virginia 21 km · Welkom 28 km · Kutloanong 31 km · Odendaalsrus 35 km · Kroonstad 42 km · Allanridge 45 km · Theunissen 58 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 Hennenman (-27.9765°, 27.0242°, elevation 1,396 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).