Hermanus weather in April

In April, Hermanus sees average daytime highs of 20°C and overnight lows near 16°C, with 42 mm of rain across 6.4 wet days and about 11.2 hours of daylight. It is the 5th-warmest and 6th-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 45% of the time in April, and the air most often feels comfortable.

Daylight stretches from about 11 h 42 min at the start of April to 10 h 42 min by month's end. Set against the rest of the year, April is Hermanus's 7th-clearest and 11th-windiest month. For the whole year in context, see Hermanus's year-round climate.

Daytime high
20°
5th warmest
Overnight low
16°
7th coldest
Rainfall
42 mm
6.4 wet days
Daylight
11 h 06 min
7:09 AM – 6:17 PM
Cloud cover
45%
7th clearest
Wind
17 km/h
11th windiest
Solar energy
4.03 kWh/m²
Travel score
6.9
out of 10

Hermanus is town in the Western Cape, South Africa.

Density
2,329/km²
people per km²
Founded
1891

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

Temperature in April

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 April day in Hermanus reaches about 20°C in the afternoon and slips back to 16°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 22°C. Set against its neighbours, April runs about 2°C cooler than March and about 2°C warmer than May.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12117
22016
32016
42016
52016
62016
72016
82016
92016
102016
112016
122016
132016
142016
152016
162015
171915
181915
191915
201915
211915
221915
231915
241915
251915
261915
271915
281915
291915
301915

Hermanus weather by month

How April compares with the rest of the year at a glance. April is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 18°224.9147.9
Feb22° / 19°215.313.37.9
Mar21° / 18°275.912.37.5
Apr20° / 16°426.411.26.9
May18° / 14°528.210.26.3
Jun16° / 12°8410.29.75.3
Jul16° / 12°859.79.95.1
Aug16° / 12°7310.510.75.0
Sep16° / 13°488.411.85.5
Oct18° / 14°407.112.96.4
Nov19° / 16°386.413.86.9
Dec21° / 17°245.114.37.6

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 20% of April, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16733
26733
36733
46733
56733
66634
76634
86634
96634
106634
116634
126535
136535
146535
156535
166535
176535
186436
196436
206535
216535
226535
236535
246535
256436
266436
276436
286436
296436
306337

Chance of precipitation in April

Any precipitation

Hermanus gets around 42 mm of rain over 6.4 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 22% and peaks near 24% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
122
222
322
422
522
621
721
821
921
1021
1121
1221
1321
1421
1521
1622
1722
1822
1922
2022
2123
2223
2323
2423
2523
2624
2724
2824
2924
3023

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the comfortable band about 48% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12144340
22244340
32344330
42444320
52544310
62644300
72644290
82744280
92845271
102945251
113045241
123146231
133246211
143347201
153447191
163448171
173548160
183649150
193749130
203849120
213950110
224050100
23405190
24415180
25415270
26415360
27415360
28415450
29415450
30415540

Wind in April

Winds average 17 km/h in April.

Across April, daily wind ranges from about 16 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2916light breeze
3016light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 42 min at the start of April to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over April. Sunrise moves from 6:57 AM to 7:20 AM, and sunset from 6:38 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:576:38
211.66:586:37
311.66:596:35
411.67:006:34
511.57:006:32
611.57:016:31
711.57:026:30
811.47:036:28
911.47:046:27
1011.47:046:25
1111.37:056:24
1211.37:066:23
1311.27:076:21
1411.27:086:20
1511.27:086:19
1611.17:096:17
1711.17:106:16
1811.17:116:15
1911.07:116:14
2011.07:126:12
2111.07:136:11
2210.97:146:10
2310.97:156:09
2410.97:156:07
2510.87:166:06
2610.87:176:05
2710.87:186:04
2810.77:196:03
2910.77:196:02
3010.77:206:01

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.03 kWh/m².

For context, solar energy here swings from a low near 2.44 kWh/m² to a high of 7.76 kWh/m² in December across the year — April's 4.03 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.3Bright
94.3Bright
104.3Bright
114.2Bright
124.2Bright
134.1Bright
144.1Bright
154.0Bright
164.0Bright
174.0Moderate
183.9Moderate
193.9Moderate
203.8Moderate
213.8Moderate
223.7Moderate
233.7Moderate
243.6Moderate
253.6Moderate
263.6Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.4Moderate
Planning a trip in April

Is April a good time to visit Hermanus?

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

6.9
Sightseeing
5th-best month of the year
3.3
Beach & pool
5th-best month of the year

April is a reasonable time to visit Hermanus for sightseeing.

What to pack for Hermanus in April

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

In April, Hermanus sees daytime highs around 20°C and nights near 16°C. Little to plan around — just the basics. About 6 days see rain.

Sea temperature near Hermanus in April

The nearest coast averages about 16°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore 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°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan19Cool
Feb19Cool
Mar18Cool
Apr16Cool
May16Cool
Jun16Cool
Jul15Bracing
Aug15Bracing
Sep15Cool
Oct16Cool
Nov17Cool
Dec19Cool

UV index in Hermanus in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April 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 Hermanus 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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 13UV 13Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb10Very high
Mar9Very high
Apr6High
May3Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct10Extreme
Nov11Extreme
Dec12Extreme

Air quality in Hermanus in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Hermanus is worst in June — around 18 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (November, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodJun 1718 µg/m³Nov 177 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb8Good
Mar12Moderate
Apr11Good
May16Moderate
Jun18Moderate
Jul16Moderate
Aug15Moderate
Sep13Moderate
Oct9Good
Nov7Good
Dec8Good
Location & terrain

Where is Hermanus?

Hermanus sits at 34.4°S, 19.2°E, 27 m above sea level, in South Africa. The nearest listed city is Gansbaai, 21 km away.

Topography around Hermanus

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

Within 3 km, the terrain around Hermanus has significant variations in elevation — a maximum elevation change of 314 m around an average of 50 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,155 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,973 m.

The land around Hermanus is covered by water (37%), grassland (20%) and artificial surfaces (20%) within 3 km, water (49%) and grassland (24%) within 16 km, and water (37%) and grassland (28%) within 80 km.

3 km
314 m
16 km
1,155 m
80 km
1,973 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Gansbaai 21 km · Caledon 27 km · Grabouw 36 km · Somerset West 53 km · Franschhoek 57 km · Le Roux 60 km · Stellenbosch 64 km · Kuils River 72 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 Hermanus (-34.4187°, 19.2345°, elevation 27 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).