Calvinia Temperature by Month

The average annual maximum temperature in Calvinia, South Africa is 25°C (77°F), with daytime highs ranging from 17°C (63°F) in June to 32°C (90°F) in January. This page covers monthly averages, day-night differences, and how Calvinia compares to cities worldwide.

The weather in Calvinia experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 17°C (63°F) in January to 4°C (39°F) in June.

The chart below illustrates the average maximum day and minimum night temperatures in Calvinia by month:

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. January, the warmest month of the year, receives 347 hours of sunshine.

The chart below shows the average temperature throughout the year:

Calvinia's average annual maximum temperature is 25°C (77°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.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Calvinia, June is the coolest month, with average highs of 17°C (63°F) and humidity around 60%, considered high. In January, the warmest month, temperatures average 32°C (90°F) with 42% humidity, conditions that feel moderate. For a full picture, see our humidity page.

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 Calvinia this rarely lasts long on the ground.

For more on Calvinia's weather, including monthly rainfall, sunshine hours, and humidity, visit our Calvinia climate page.