Groot-Brakrivier weather in May

In May, Groot-Brakrivier sees average daytime highs of 20°C and overnight lows near 12°C, with 41 mm of rain across 6 wet days and about 10.3 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 19°C by the end. The sky is clear or mostly clear about 46% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 42 min at the start of May to 9 h 54 min by month's end. Set against the rest of the year, May is Groot-Brakrivier's 9th-clearest and 12th-windiest month. For the whole year in context, see Groot-Brakrivier's year-round climate.

Daytime high
20°
8th warmest
Overnight low
12°
5th coldest
Rainfall
41 mm
6 wet days
Daylight
10 h 12 min
7:20 AM – 5:34 PM
Cloud cover
45%
9th clearest
Wind
11 km/h
12th windiest
Solar energy
3.11 kWh/m²
Travel score
7.1
out of 10

Groot-Brakrivier is village in the Western Cape, South Africa.

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 20°C in the first days to 19°C by the end.

A typical May day in Groot-Brakrivier reaches about 20°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 24°C. Set against its neighbours, May runs about 2°C cooler than April and about 2°C warmer than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12013
22013
32013
42013
52013
62013
72013
82013
92013
102013
112013
122013
132013
142012
152012
162012
172012
182012
192012
202012
212012
222012
231912
241912
251912
261911
271911
281911
291911
301911
311811

Groot-Brakrivier weather by month

How May compares with the rest of the year at a glance. May is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 18°418.3147.7
Feb24° / 18°337.413.37.6
Mar23° / 17°46812.37.6
Apr21° / 14°456.911.27.2
May20° / 12°41610.37.1
Jun18° / 10°346.49.86.6
Jul17° / 366.6106.4
Aug18° / 10°457.310.76.4
Sep19° / 11°366.811.86.7
Oct20° / 13°517.712.96.8
Nov21° / 15°608.413.87.0
Dec23° / 16°397.914.27.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 19% of May, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16733
26832
36832
46832
56832
66931
76931
86832
96832
106832
116733
126634
136634
146535
156436
166436
176436
186238
196238
206238
216238
226238
236238
246337
256436
266436
276436
286634
296634
306832
316832

Chance of precipitation in May

Any precipitation

Groot-Brakrivier gets around 41 mm of rain over 6 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 19% and peaks near 22% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
122
222
321
421
520
620
719
819
918
1018
1117
1217
1316
1416
1516
1616
1717
1817
1917
2018
2118
2219
2319
2420
2520
2621
2721
2822
2922
3022
3122

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 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
170282
271272
372262
472262
573252
675241
776231
877221
979201
1080191
1181181
1282171
1384151
1485141
1586131
1687121
1788120
1889110
1990100
209190
219280
229280
239370
249460
259550
269550
279640
289730
299730
309820
319820

Wind in May

Winds average 11 km/h in May, the calmest month.

Across May, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 42 min at the start of May to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over May. Sunrise moves from 7:09 AM to 7:31 AM, and sunset from 5:48 PM to 5:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.77:095:48
210.67:095:47
310.67:105:46
410.67:115:45
510.57:125:44
610.57:135:43
710.57:135:42
810.47:145:41
910.47:155:40
1010.47:165:39
1110.47:165:38
1210.37:175:38
1310.37:185:37
1410.37:195:36
1510.37:205:35
1610.27:205:34
1710.27:215:34
1810.27:225:33
1910.27:235:32
2010.17:235:32
2110.17:245:31
2210.17:255:30
2310.17:255:30
2410.17:265:29
2510.07:275:29
2610.07:285:28
2710.07:285:28
2810.07:295:27
2910.07:305:27
309.97:305:26
319.97:315:26

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 3.11 kWh/m².

For context, solar energy here swings from a low near 2.65 kWh/m² to a high of 7.54 kWh/m² in December across the year — May's 3.11 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.5Moderate
43.4Moderate
53.4Moderate
63.4Moderate
73.4Moderate
83.3Moderate
93.3Moderate
103.3Moderate
113.3Moderate
123.2Moderate
133.2Moderate
143.2Moderate
153.2Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.0Moderate
203.0Moderate
213.0Moderate
223.0Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in May

Is May a good time to visit Groot-Brakrivier?

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

7.1
Sightseeing
6th-best month of the year
3.5
Beach & pool
8th-best month of the year

May is one of the better times to visit Groot-Brakrivier for general sightseeing.

What to pack for Groot-Brakrivier in May

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

In May, Groot-Brakrivier sees daytime highs around 20°C and nights near 12°C. Little to plan around — just the basics. About 6 days see rain.

Sea temperature near Groot-Brakrivier in May

The nearest coast averages about 17°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in January at about 21°C and coldest in August near 16°C.

It's comfortable for a long swim from Dec 13 to Mar 19 — about 3.2 months when the water holds above 20°C.

14°16°18°20°22°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar20Refreshing
Apr18Cool
May17Cool
Jun17Cool
Jul16Cool
Aug16Cool
Sep17Cool
Oct17Cool
Nov19Cool
Dec20Refreshing

UV index in Groot-Brakrivier in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Groot-Brakrivier peaks around January 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 14UV 13Jun 22UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct10Extreme
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Groot-Brakrivier?

Groot-Brakrivier sits at 34.0°S, 22.2°E, 23 m above sea level, in South Africa. The nearest listed city is Mossel Bay, 17 km away.

Swellendam

Topography around Groot-Brakrivier

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

Within 3 km, the terrain around Groot-Brakrivier has only modest variations in elevation — a maximum elevation change of 198 m around an average of 76 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,438 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,099 m.

The land around Groot-Brakrivier is covered by trees (33%) within 3 km, water (36%) and grassland (21%) within 16 km, and shrubs (32%), water (29%) and grassland (23%) within 80 km.

3 km
198 m
16 km
1,438 m
80 km
2,099 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Mossel Bay 17 km · George 24 km · Oudtshoorn 49 km · Dysselsdorp 56 km · Knysna 76 km · Riversdale 89 km · Plettenberg Bay 106 km · Swellendam 164 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 Groot-Brakrivier (-34.0437°, 22.2257°, elevation 23 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).