Constantia Weather in December

Constantia in December sees pleasant daytime temperatures of 22°C (72°F) and nighttime lows of 17°C (63°F). Low rainfall is typical, with around 19 mm (0.7 in) for the month.

Rainfall in Constantia in December

Historically, December sees about 6 days of rain, with a monthly average of 19 mm (0.7 in). Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.

Temperature in Constantia in December

Constantia in December is worth a visit. The temperature is perfect, with 22°C (72°F) during the day and 17°C (63°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Constantia in December

With approximately 334 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Constantia in December

December has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

Average water temperature in December

With water at 18°C (64°F), swimming is comfortable for most people. It feels refreshing rather than cold, though it depends a bit on personal preference.

If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April, November and December typically offer the best circumstances for Constantia.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit South Africa, check out our Constantia's climate page.

Constantia Temperature in December

Min Temperature 17°C (63°F)  

Max Temperature 22°C (72°F)  

Water Temperature 18°C (64°F) *  

Chance of Rain 21%  

Precipitation 19 mm (0.7 in)  

Rainy days 6 days  

Humidity 71% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 334 hours *  

Percentage Sunshine *  

* Data from: Cape Town, South Africa (14 KM, 9 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Constantia typically stay consistent throughout December, with daily highs averaging around 22°C (72°F). Nights are pleasant, with lows around 16°C (61°F).

Average temperatures in December

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‹ January February March April May June July August September October November December ›

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in December

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‹ January February March April May June July August September October November December ›

Historical weather for Constantia in December

Browse day-by-day weather records for Constantia spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Constantia historical weather extremes in December

The extremes listed below come from historical weather data collected in Constantia from 1976 through 2025.

• On December 6, 2002, temperatures climbed to 35°C (95°F), marking the warmest December day on record.
• Constantia experienced its chilliest December day on December 2, 1993, reaching only 14°C (57°F).
• The lowest overnight temperature recorded in December was 7°C (45°F) (December 7, 1982).

What to Wear in Constantia in December

Pleasant temperatures in December mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. With minimal rainfall expected, you can leave the rain gear at home. The water temperature sits at about 18°C (64°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Constantia in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit South Africa, check out our Constantia's climate page.

More climate data for Constantia

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Constantia climate overview or explore weather in South Africa.