Hermanus Temperature by Month
Hermanus in Western Cape, South Africa sees moderate seasonal temperature shifts, with daytime highs between 17°C (63°F) in July and 25°C (77°F) in February, averaging 21°C (70°F) annually. Explore the full monthly breakdown below.
Hermanus Monthly Temperatures
The moderate changes in the climate in Hermanus ensure gradual weather shifts through each season. At night, temperatures drop to between 18°C (64°F) and 10°C (50°F) depending on the time of year.
The chart below illustrates the average maximum day and minimum night temperatures in Hermanus by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Hermanus Temperatures: 1976-2026
Browse day-by-day temperature records for Hermanus spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Hermanus vs South Africa
The map below shows the annual temperature across South Africa. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
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Hermanus vs World: Temperature Compared
Hermanus's average annual maximum temperature is 21°C (70°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Hermanus's weather — including monthly rainfall, sunshine hours, and humidity — visit our Hermanus climate page.
