Grabouw weather in August

In August, Grabouw sees average daytime highs of 16°C and overnight lows near 10°C, with 86 mm of rain across 11.1 wet days and about 10.7 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 16°C through the month. The sky is clear or mostly clear about 41% of the time in August, and the air most often feels dry.

Daylight stretches from about 10 h 18 min at the start of August to 11 h 12 min by month's end. Set against the rest of the year, August is Grabouw's 8th-clearest and 7th-windiest month. For the whole year in context, see Grabouw's year-round climate.

Daytime high
16°
11th warmest
Overnight low
10°
2nd coldest
Rainfall
86 mm
11.1 wet days
Daylight
10 h 42 min
7:27 AM – 6:09 PM
Cloud cover
48%
8th clearest
Wind
15 km/h
7th windiest
Solar energy
3.41 kWh/m²
Travel score
4.9
out of 10

Grabouw is town in the Western Cape, South Africa.

Density
5,638/km²
people per km²
Founded
1856

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 16°C through the month.

A typical August day in Grabouw reaches about 16°C in the afternoon and slips back to 10°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 19°C. Set against its neighbours, August runs on par with July and about 1°C cooler than September.

10°15°20°151015202531
Avg high (°C)Avg low (°C)
11510
21510
31510
41510
51510
61510
71510
81510
91510
101510
111510
121510
131510
141510
151510
161510
171510
181610
191610
201610
211610
221610
231610
241610
251610
261610
271611
281611
291611
301611
311611

Grabouw weather by month

How August compares with the rest of the year at a glance. August is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 17°255148.2
Feb23° / 18°235.113.38.2
Mar22° / 17°265.512.37.8
Apr20° / 14°496.411.27.1
May18° / 13°648.610.26.3
Jun16° / 11°10210.99.85.1
Jul16° / 10°999.8105.0
Aug16° / 10°8611.110.74.9
Sep17° / 11°568.611.85.6
Oct18° / 13°467.112.96.6
Nov20° / 14°436.613.87.0
Dec22° / 16°265.414.27.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26535
36634
46634
56535
66535
76535
86436
96436
106436
116337
126337
136337
146238
156238
166238
176139
186040
196040
206139
216040
225941
235941
245941
255842
265842
275743
285644
295644
305743
315644

Chance of precipitation in August

Any precipitation

Grabouw gets around 86 mm of rain over 11.1 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
235
335
434
535
635
735
835
935
1035
1135
1234
1334
1435
1535
1635
1735
1835
1935
2035
2135
2235
2335
2435
2535
2635
2735
2834
2934
3033
3133

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16982
17982
18982
19982
20982
21982
22982
23982
24982
25982
26982
27982
28982
29982
30982
31982

Wind in August

Winds average 15 km/h in August.

Across August, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 18 min at the start of August to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over August. Sunrise moves from 7:42 AM to 7:07 AM, and sunset from 5:58 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.37:425:58
210.37:415:59
310.37:406:00
410.47:396:01
510.47:386:01
610.47:376:02
710.47:366:03
810.57:356:04
910.57:346:04
1010.57:336:05
1110.67:326:06
1210.67:316:07
1310.67:306:07
1410.77:296:08
1510.77:286:09
1610.77:276:09
1710.77:256:10
1810.87:246:11
1910.87:236:12
2010.87:226:12
2110.97:216:13
2210.97:196:14
2310.97:186:15
2411.07:176:15
2511.07:156:16
2611.07:146:17
2711.17:136:18
2811.17:126:18
2911.17:106:19
3011.27:096:20
3111.27:076:20

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.41 kWh/m².

For context, solar energy here swings from a low near 2.43 kWh/m² to a high of 7.92 kWh/m² in December across the year — August's 3.41 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.0Moderate
23.0Moderate
33.0Moderate
43.1Moderate
53.1Moderate
63.1Moderate
73.2Moderate
83.2Moderate
93.2Moderate
103.3Moderate
113.3Moderate
123.3Moderate
133.3Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.5Moderate
183.5Moderate
193.5Moderate
203.5Moderate
213.6Moderate
223.6Moderate
233.6Moderate
243.7Moderate
253.7Moderate
263.7Moderate
273.8Moderate
283.8Moderate
293.9Moderate
303.9Moderate
313.9Moderate
Planning a trip in August

Hazard calendar for Grabouw

In seasonPeak

In August, Grabouw sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Grabouw's rainy season runs April–September, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Grabouw?

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

4.9
Sightseeing
12th-best month of the year
0.3
Beach & pool
12th-best month of the year

August is a reasonable time to visit Grabouw for sightseeing.

What to pack for Grabouw in August

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

In August, Grabouw sees daytime highs around 16°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Grabouw in August

The nearest coast averages about 15°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 km away) is warmest in January at about 19°C and coldest in July near 15°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

14°16°18°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan19Cool
Feb18Cool
Mar17Cool
Apr16Cool
May16Cool
Jun15Cool
Jul15Bracing
Aug15Bracing
Sep15Cool
Oct16Cool
Nov17Cool
Dec18Cool

UV index in Grabouw in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Grabouw peaks around January 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 13UV 13Jun 21UV 3
UV index (midday)Level
Jan13Extreme
Feb10Very high
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct10Extreme
Nov12Extreme
Dec12Extreme

Air quality in Grabouw in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Grabouw is worst in June — around 28 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (December, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodJun 1228 µg/m³Dec 1211 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb11Good
Mar19Moderate
Apr21Moderate
May27Moderate
Jun28Moderate
Jul25Moderate
Aug22Moderate
Sep18Moderate
Oct17Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Grabouw?

Grabouw sits at 34.2°S, 19.0°E, 332 m above sea level, in South Africa. The nearest listed city is Somerset West, 19 km away.

Topography around Grabouw

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

Within 3 km, the terrain around Grabouw has only modest variations in elevation — a maximum elevation change of 217 m around an average of 328 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,583 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,997 m.

The land around Grabouw is covered by trees (40%) and grassland (26%) within 3 km, grassland (61%) and trees (21%) within 16 km, and water (35%) and grassland (27%) within 80 km.

3 km
217 m
16 km
1,583 m
80 km
1,997 m
treesshrubsgrasslandcroplandartificial surfaceswater
August weather nearby: Somerset West 19 km · Stellenbosch 28 km · Franschhoek 28 km · Le Roux 30 km · Hermanus 36 km · Kuils River 37 km · Caledon 39 km · Kraaifontein 44 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 Grabouw (-34.1515°, 19.0151°, elevation 332 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. 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).