Hermanus weather in March

In March, Hermanus sees average daytime highs of 21°C and overnight lows near 18°C, with 27 mm of rain across 5.9 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 55% of the time in March, and the air most often feels humid.

Daylight stretches from about 12 h 48 min at the start of March to 11 h 42 min by month's end. Set against the rest of the year, March is Hermanus's 4th-clearest and 8th-windiest month. For the whole year in context, see Hermanus's year-round climate.

Daytime high
21°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
27 mm
5.9 wet days
Daylight
12 h 18 min
6:45 AM – 7:01 PM
Cloud cover
40%
4th clearest
Wind
18 km/h
8th windiest
Solar energy
5.44 kWh/m²
Travel score
7.5
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 March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 21°C through the month.

A typical March day in Hermanus reaches about 21°C in the afternoon and slips back to 18°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 24°C. Set against its neighbours, March runs about 1°C cooler than February and about 2°C warmer than April.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
12218
22218
32218
42218
52218
62218
72218
82218
92218
102218
112218
122218
132218
142118
152118
162118
172118
182117
192117
202117
212117
222117
232117
242117
252117
262117
272117
282117
292117
302117
312117

Hermanus weather by month

How March compares with the rest of the year at a glance. March is the 3rd-warmest and 9th-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 March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 17% of March, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17822
27723
37624
47624
57426
67426
77327
87228
97228
107228
117129
127129
137129
147228
157129
167129
177129
187129
197129
207129
217129
227129
237129
247129
257030
266931
276931
286931
296832
306832
316832

Chance of precipitation in March

Any precipitation

Hermanus gets around 27 mm of rain over 5.9 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 18% and peaks near 21% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
117
217
317
418
518
618
718
818
918
1018
1118
1218
1318
1418
1518
1618
1718
1818
1918
2018
2118
2218
2319
2419
2519
2620
2720
2820
2921
3021
3121

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the humid band about 43% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
111275111
211285011
311285011
411295010
511294910
611304910
712314810
81232479
91232479
101233469
111234468
121235458
131236447
141237447
151338436
161339426
171340425
181341415
191342414
201343403
211443403
221444392
231444392
241545382
251545381
261645371
271745371
281745371
291845361
301945350
312045350

Wind in March

Winds average 18 km/h in March.

Across March, daily wind ranges from about 18 km/h on the calmest days to 19 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 12 h 48 min at the start of March to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over March. Sunrise moves from 6:32 AM to 6:57 AM, and sunset from 7:21 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:327:21
212.86:337:19
312.76:347:18
412.76:357:17
512.76:367:16
612.66:367:14
712.66:377:13
812.66:387:12
912.56:397:10
1012.56:407:09
1112.46:417:08
1212.46:417:06
1312.46:427:05
1412.36:437:03
1512.36:447:02
1612.36:457:01
1712.26:466:59
1812.26:466:58
1912.26:476:57
2012.16:486:55
2112.16:496:54
2212.06:506:52
2312.06:506:51
2412.06:516:49
2511.96:526:48
2611.96:536:47
2711.96:536:45
2811.86:546:44
2911.86:556:42
3011.86:566:41
3111.76:576:39

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 5.44 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 — March's 5.44 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.1Intense
46.0Intense
56.0Bright
65.9Bright
75.9Bright
85.8Bright
95.8Bright
105.8Bright
115.7Bright
125.7Bright
135.6Bright
145.6Bright
155.5Bright
165.5Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.2Bright
225.2Bright
235.1Bright
245.1Bright
255.0Bright
265.0Bright
274.9Bright
284.9Bright
294.8Bright
304.8Bright
314.7Bright
Planning a trip in March

Is March a good time to visit Hermanus?

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

7.5
Sightseeing
4th-best month of the year
4.8
Beach & pool
3rd-best month of the year

March is one of the better times to visit Hermanus for general sightseeing.

What to pack for Hermanus in March

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

In March, Hermanus sees daytime highs around 21°C and nights near 18°C. Worth packing: sun protection. About 6 days see rain.

sun protection

Sea temperature near Hermanus in March

The nearest coast averages about 18°C in March — 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 March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 9 (very high — sun protection essential). 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 March

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where March 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
March 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).