Malmesbury weather in August

In August, Malmesbury sees average daytime highs of 18°C and overnight lows near 7°C, with 82 mm of rain across 9.4 wet days and about 10.8 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 18°C through the month. The sky is clear or mostly clear about 45% 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 Malmesbury's 9th-clearest and 8th-windiest month. For the whole year in context, see Malmesbury's year-round climate.

Daytime high
18°
11th warmest
Overnight low
2nd coldest
Rainfall
82 mm
9.4 wet days
Daylight
10 h 42 min
7:27 AM – 6:12 PM
Cloud cover
46%
9th clearest
Wind
10 km/h
8th windiest
Solar energy
3.58 kWh/m²
Travel score
6.3
out of 10

Malmesbury is town in the Western Cape, South Africa.

Density
2,288/km²
people per km²
Founded
1745

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 18°C through the month.

A typical August day in Malmesbury reaches about 18°C in the afternoon and slips back to 7°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 23°C. Set against its neighbours, August runs on par with July and about 2°C cooler than September.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1186
2186
3186
4186
5186
6186
7186
8186
9186
10186
11187
12187
13187
14187
15187
16187
17187
18187
19187
20187
21187
22187
23187
24187
25187
26187
27188
28188
29198
30198
31198

Malmesbury 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
Jan30° / 17°142.6146.2
Feb31° / 18°122.313.26.1
Mar29° / 16°152.712.37.1
Apr25° / 13°414.811.28.0
May22° / 10°667.310.37.2
Jun18° / 1079.99.86.2
Jul18° / 938.9106.2
Aug18° / 829.410.86.3
Sep20° / 527.611.86.9
Oct24° / 11°324.912.88.0
Nov26° / 14°294.713.77.9
Dec29° / 16°163.314.27.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 38%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26634
36634
46634
56634
66634
76535
86535
96436
106436
116436
126436
136436
146436
156436
166238
176238
186238
196238
206238
216040
226040
235941
245842
255743
265644
275644
285545
295545
305545
315545

Chance of precipitation in August

Any precipitation

Malmesbury gets around 82 mm of rain over 9.4 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 29% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
630
730
829
929
1029
1129
1228
1328
1428
1528
1628
1729
1829
1929
2029
2129
2229
2330
2430
2530
2630
2730
2830
2929
3029
3129

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
61000
71000
81000
91000
101000
111000
121000
13991
14991
15991
16991
17991
18991
19991
20991
21991
22991
23982
24982
25982
26982
27982
28982
29982
30982
31982

Wind in August

Winds average 10 km/h in August.

Across August, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 7:41 AM to 7:08 AM, and sunset from 6:01 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.37:416:01
210.37:416:02
310.47:406:02
410.47:396:03
510.47:386:04
610.57:376:04
710.57:366:05
810.57:356:06
910.57:346:07
1010.67:336:07
1110.67:326:08
1210.67:316:09
1310.77:306:09
1410.77:296:10
1510.77:286:11
1610.77:276:12
1710.87:266:12
1810.87:246:13
1910.87:236:14
2010.97:226:15
2110.97:216:15
2210.97:206:16
2311.07:186:17
2411.07:176:17
2511.07:166:18
2611.17:156:19
2711.17:136:19
2811.17:126:20
2911.27:116:21
3011.27:096:22
3111.27:086:22

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.58 kWh/m².

For context, solar energy here swings from a low near 2.54 kWh/m² to a high of 8.4 kWh/m² in January across the year — August's 3.58 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.2Moderate
33.2Moderate
43.2Moderate
53.3Moderate
63.3Moderate
73.3Moderate
83.4Moderate
93.4Moderate
103.4Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.5Moderate
153.6Moderate
163.6Moderate
173.6Moderate
183.7Moderate
193.7Moderate
203.7Moderate
213.8Moderate
223.8Moderate
233.8Moderate
243.9Moderate
253.9Moderate
263.9Moderate
274.0Moderate
284.0Moderate
294.0Bright
304.1Bright
314.1Bright
Planning a trip in August

Hazard calendar for Malmesbury

In seasonPeak

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

Malmesbury's rainy season runs May–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 Malmesbury?

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

6.3
Sightseeing
8th-best month of the year
2.1
Beach & pool
11th-best month of the year

August is a reasonable time to visit Malmesbury for sightseeing.

What to pack for Malmesbury in August

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

In August, Malmesbury sees daytime highs around 18°C and nights near 7°C. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Malmesbury in August

The nearest coast averages about 14°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 37 km away) is warmest in February at about 17°C and coldest in July near 14°C.

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

12°14°16°18°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan17Cool
Feb17Cool
Mar16Cool
Apr15Cool
May15Bracing
Jun15Bracing
Jul14Bracing
Aug14Bracing
Sep15Bracing
Oct15Bracing
Nov16Cool
Dec16Cool

UV index in Malmesbury 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 Malmesbury peaks around January 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 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 20UV 3
UV index (midday)Level
Jan13Extreme
Feb10Very high
Mar9Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep5High
Oct10Extreme
Nov11Extreme
Dec12Extreme

Air quality in Malmesbury 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 Malmesbury is worst in May — around 52 µg/m³ PM2.5 (poor), about 3.4× the cleanest month (December, 15 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 2152 µg/m³Dec 1516 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb19Moderate
Mar28Moderate
Apr41Poor
May52Poor
Jun50Poor
Jul47Poor
Aug41Poor
Sep33Moderate
Oct29Moderate
Nov18Moderate
Dec15Moderate
Location & terrain

Where is Malmesbury?

Malmesbury sits at 33.5°S, 18.7°E, 136 m above sea level, in South Africa. The nearest listed city is Atlantis, 25 km away.

Topography around Malmesbury

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

Within 3 km, the terrain around Malmesbury has only modest variations in elevation — a maximum elevation change of 188 m around an average of 166 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 892 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,073 m.

The land around Malmesbury is covered by cropland (39%), grassland (26%) and artificial surfaces (23%) within 3 km, cropland (67%) within 16 km, and cropland (30%) and grassland (25%) within 80 km.

3 km
188 m
16 km
892 m
80 km
2,073 m
treesshrubsgrasslandcroplandartificial surfaceswater
August weather nearby: Atlantis 25 km · Wellington 33 km · Moorreesburg 35 km · Paarl 38 km · Durbanville 42 km · Kraaifontein 43 km · Kuils River 54 km · Stellenbosch 54 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 Malmesbury (-33.4608°, 18.7271°, elevation 136 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).