Heidelberg Temperature by Month
Heidelberg, Western Cape, South Africa has an average annual maximum temperature of 24°C (75°F), with moderate seasonal shifts ranging from 19°C (66°F) in July to 28°C (82°F) in February. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Heidelberg Monthly Temperatures
In Heidelberg, seasonal changes bring about a moderate variation in temperatures. Nighttime lows range from 17°C (63°F) in February to 7°C (45°F) in July.
The chart below illustrates the average maximum day and minimum night temperatures in Heidelberg by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak.
The chart below shows the average temperature throughout the year:
Temperature: Heidelberg 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
very cold
Heidelberg vs World: Temperature Compared
Heidelberg's average annual maximum temperature is 24°C (75°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.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
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.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Heidelberg this rarely lasts long on the ground.
For more on Heidelberg's weather — including monthly rainfall, sunshine hours, and humidity — visit our Heidelberg climate page.
