Vaalwater weather in May

In May, Vaalwater sees average daytime highs of 23°C and overnight lows near 9°C, with 11 mm of rain across 2.1 wet days and about 10.8 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 22°C by the end. The sky is clear or mostly clear about 78% 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 Vaalwater's 4th-clearest and 12th-windiest month. For the whole year in context, see Vaalwater's year-round climate.

Daytime high
23°
10th warmest
Overnight low
4th coldest
Rainfall
11 mm
2.1 wet days
Daylight
10 h 48 min
6:39 AM – 5:29 PM
Cloud cover
21%
4th clearest
Wind
7 km/h
12th windiest
Solar energy
4.48 kWh/m²
Travel score
8.9
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 22°C by the end.

A typical May day in Vaalwater reaches about 23°C in the afternoon and slips back to 9°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 26°C. Set against its neighbours, May runs about 2°C cooler than April and about 2°C warmer than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12411
22411
32411
42411
52411
62411
72411
82411
92410
102410
112410
122410
132310
142310
152310
16239
17239
18239
19239
20239
21239
22239
23228
24228
25228
26228
27228
28228
29228
30228
31227

Vaalwater weather by month

How May compares with the rest of the year at a glance. May is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 18°10112.913.35.6
Feb28° / 18°779.612.86.0
Mar27° / 16°589.212.26.8
Apr25° / 13°334.711.48.0
May23° / 112.110.88.9
Jun21° / 5110.58.7
Jul21° / 30.610.68.7
Aug23° / 20.511.29.3
Sep27° / 12°101.811.88.5
Oct28° / 15°376.312.66.9
Nov28° / 17°7310.913.26.0
Dec28° / 18°961413.55.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 78% 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 10%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18416
28515
38614
48614
58713
68812
78812
88911
99010
109010
11919
12919
13919
14928
15928
16928
17919
18919
19919
20919
21919
22919
23919
24919
25919
26928
27928
28928
29928
30928
31928

Chance of precipitation in May

Any precipitation

Vaalwater gets around 11 mm of rain over 2.1 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 8% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
18
28
38
47
57
67
77
87
97
107
117
126
136
147
157
167
177
187
197
207
217
227
236
246
256
266
275
285
295
305
315

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1928
2937
3937
4946
5955
6964
7964
8973
9973
10982
11982
12982
13991
14991
15991
16991
17991
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in May

Winds average 7 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
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
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 6:32 AM to 6:46 AM, and sunset from 5:38 PM to 5:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:325:38
211.16:325:37
311.16:335:36
411.06:335:36
511.06:345:35
611.06:345:34
711.06:345:34
811.06:355:33
910.96:355:32
1010.96:365:32
1110.96:365:31
1210.96:375:31
1310.96:375:30
1410.96:385:30
1510.86:385:29
1610.86:395:29
1710.86:395:28
1810.86:405:28
1910.86:415:27
2010.86:415:27
2110.76:425:26
2210.76:425:26
2310.76:425:26
2410.76:435:25
2510.76:435:25
2610.76:445:25
2710.76:445:24
2810.76:455:24
2910.66:455:24
3010.66:465:24
3110.66:465:24

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.48 kWh/m².

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 6.73 kWh/m² in October across the year — May's 4.48 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.2Bright
Planning a trip in May

Hazard calendar for Vaalwater

In seasonPeak

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

Vaalwater'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 Vaalwater?

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

8.9
Sightseeing
2nd-best month of the year
6.8
Beach & pool
6th-best month of the year

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

What to pack for Vaalwater in May

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

In May, Vaalwater sees daytime highs around 23°C and nights near 9°C. Worth packing: light clothes.

light clothes

UV index in Vaalwater 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 Vaalwater peaks around January 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 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 15Jun 16UV 5
UV index (midday)Level
Jan15Extreme
Feb13Extreme
Mar13Extreme
Apr9Very high
May6High
Jun5High
Jul6High
Aug8Very high
Sep10Very high
Oct10Extreme
Nov13Extreme
Dec14Extreme

Air quality in Vaalwater 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 Vaalwater is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (December, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1416 µg/m³Dec 196 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar10Good
Apr12Moderate
May16Moderate
Jun15Moderate
Jul16Moderate
Aug14Moderate
Sep17Moderate
Oct12Moderate
Nov8Good
Dec6Good
Location & terrain

Where is Vaalwater?

Vaalwater sits at 24.3°S, 28.1°E, 1,188 m above sea level, in South Africa. The nearest listed city is Modimolle, 53 km away.

Topography around Vaalwater

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

Within 3 km, the terrain around Vaalwater has only modest variations in elevation — a maximum elevation change of 104 m around an average of 1,170 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 598 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,265 m.

The land around Vaalwater is covered by shrubs (40%) and grassland (32%) within 3 km, shrubs (61%) and grassland (27%) within 16 km, and shrubs (64%) and grassland (21%) within 80 km.

3 km
104 m
16 km
598 m
80 km
1,265 m
treesshrubsgrasslandcroplandartificial surfaces
May weather nearby: Modimolle 53 km · Mookgophong 66 km · Bela Bela 68 km · Thabazimbi 78 km · Lephalale 79 km · Marapong 87 km · Mokopane 91 km · Amandelbult 101 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 Vaalwater (-24.2957°, 28.1141°, elevation 1,188 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).