Last updated: August 31, 2025
December in Constantia, South Africa brings a delightful mix of warm temperatures and refreshing breezes. With maximum highs reaching 28°C (82°F) and average temperatures around 19°C (66°F), the days are pleasantly warm. Nighttime cools down to a comfortable 14°C (58°F), making evenings perfect for outdoor activities. This month sees about 26 mm (1.0 in) of rainfall over 5 days, contributing to a humid climate of 77%. Ideal for exploring the lush landscapes or enjoying local vineyards, December offers a vibrant atmosphere in this picturesque region.
In Constantia, South Africa, December ushers in the warmth of summer, showcasing a delightful range of temperatures. With a minimum of 14°C (58°F) and a maximum of 28°C (82°F), the climate is characterized by mild mornings and pleasantly warm afternoons. The average temperature settles at a comfortable 19°C (66°F), setting the stage for outdoor activities and leisurely gatherings. As the year culminates, December's weather reflects a slight rise compared to the preceding months, continuing the trend of gradually increasing temperatures since the onset of spring. This inviting warmth makes December an ideal time for visitors to explore Constantia's enchanting vineyards and scenic landscapes, basking in the festive spirit of the season.
In December, Constantia experiences a moderate precipitation amount of 26 mm (1.0 in), signaling the onset of summer rainfall in South Africa. Over the month, rain graces the area on around 5 days, contributing to the lush landscapes that define this picturesque region. This amount reflects a noticeable shift from previous months, as October and November had 41 mm and 33 mm respectively, albeit with similar rainfall days. As the year comes to a close, December's mild precipitation hints at the wetter tendencies of January and February, where rainfall typically peaks, inviting a refreshing contrast to the dry spell experienced earlier in the year. Overall, December embodies a gentle transition into the more lush and vibrant summer months ahead.
In Constantia, South Africa, December ushers in a humidity level of 77%, gracefully maintaining the moderate conditions seen throughout the year. As the seasons shift, humidity levels exhibit some interesting trends: starting from 80% in February, they peak in March at 81%, before gradually tapering off to 75% in November. Following this slight decline, December's humidity returns to a comfortable 77%, mirroring the values observed in both January and October. The overall pattern suggests a stable climate, with humidity fluctuations remaining within a narrow band, creating a welcoming atmosphere for residents and visitors alike as the year winds down.
December in Constantia, South Africa, marks a peak in the UV Index, soaring to 14 and categorizing as extreme, which means that even a brief 10-minute exposure can lead to sunburn. This trend of high UV levels is consistent throughout the summer months, with January and February also hitting a UV Index of 14 and 13 respectively. As the year progresses into autumn and winter, the UV Index gradually decreases, dipping to 5 in May and reaching a low of 3 in June. However, December serves as a vivid reminder of the importance of sun protection, as it kicks off the hottest months. Being aware of these fluctuations can help residents and visitors enjoy the beautiful summer sun safely. For more detailed information, check out Constantia UV Index.
UV Risk Categories
In December, Constantia, South Africa, basks in a glorious 422 hours of sunshine, making it the sunniest month of the year. This robust light total reflects a key trend: as the year progresses, sunlight hours peak during the summer months. While January begins with 339 hours and steadily increases to 390 hours by November, the jump to December's total underscores the region's vibrant summer appeal. This radiant finale to the year not only offers longer days but also sets a warm, inviting tone for holiday gatherings and outdoor activities, showcasing why Constantia is a cherished summer destination.
In December, Constantia, South Africa, enjoys a 60% chance of sunny weather, reflecting a slight uptick from the preceding months. While this is a notable increase compared to the cooler, overcast months of April through November, the likelihood of sunny days in December still lags behind the vibrant summer months of January and February, both boasting an impressive 81% chance of sunshine. This trend indicates that as the year draws to a close, residents and visitors alike can anticipate a pleasant mix of sun and clouds, making December an inviting time to explore the beauty of Constantia's vineyards and landscapes.
In Constantia, South Africa, December welcomes the return of longer days, with 14 hours of daylight gracing the landscape, mirroring the brightness of January. As the year progresses from the summer solstice in December to the winter solstice in June, daylight gradually diminishes, reaching its lowest point in mid-year with only 9 hours in June. Following this dip, daylight hours begin to rebound, bringing back the vibrant quality of light with 10 hours in July and August, and steadily increasing until it peaks again in December. This cyclical pattern not only accentuates the beauty of Constantia's seasons but also highlights the region's inviting climate and the elongated days that enhance outdoor activities during the festive season.
In December, Constantia experiences a gentle increase in wind speed, averaging 6.0 m/s (13 mph), marking a subtle uptick from the preceding months. This pattern of wind dynamics showcases the region's transition as the summer season approaches. While the early months of the year, particularly January and February, boast slightly higher wind speeds around 6.5 m/s (15 mph) and 6.4 m/s (14 mph), a gradual decline follows, reaching a low of 4.0 m/s (9 mph) in May. However, as the year draws to a close, wind conditions shift once more, returning to a brisker pace as the year-end festivities commence. This rhythmic fluctuation not only enhances the beauty of Constantia's landscape but also invigorates its vibrant outdoor culture during summer's height.
Weather in Constantia varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Constantia, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather exhibits a comfortable range with temperatures from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), alongside an average temperature of 19°C (66°F). The month experiences relatively higher precipitation, totaling 26 mm (1.0 in) over about 5 days, while humidity remains at 77%. In contrast, January brings slightly warmer conditions, with a minimum temperature of 15°C (59°F) and an average of 20°C (68°F), but maintains the same maximum of 28°C (82°F). The precipitation is reduced to 14 mm (0.6 in) across just 2 days, while humidity remains consistent at 77%. For more detailed information, you can check Constantia weather in January.
In December, temperatures range from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), with an average temperature of 19°C (66°F). This month also sees around 26 mm (1.0 in) of precipitation over approximately 5 days, contributing to a humidity level of 77%. In contrast, February experiences slightly warmer conditions, with minimum temperatures of 15°C (59°F) and a maximum of 27°C (81°F), averaging 20°C (68°F). Notably, February is drier, with only 10 mm (0.4 in) of rain falling across just 2 days, and a humidity level that increases to 80%. For more specific details, you can visit Constantia weather in February.
In December, the weather features a minimum temperature of 14°C (58°F) and reaches an average of 19°C (66°F), peaking at a maximum of 28°C (82°F). The month sees about 26 mm (1.0 in) of precipitation over five days, with a humidity level of 77%. Conversely, March shows a slightly cooler minimum temperature of 13°C (56°F) while maintaining the same average and maximum temperatures as December. With a marginally lower precipitation total of 24 mm (1.0 in) falling over just four days, March experiences a higher humidity of 81%. For more detailed information on the weather in March, visit Constantia weather in March.
In December, the weather is generally warm, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), and a humidity level of 77%. This month experiences relatively low precipitation at 26 mm (1.0 in), occurring on about 5 days. In contrast, April sees slightly cooler temperatures, with a minimum of 11°C (53°F) and a maximum of 31°C (88°F). Despite being a bit wetter, with precipitation totaling 30 mm (1.2 in) over 5 days, April has a higher humidity level at 80%. For more information on weather specifics in April, refer to Constantia weather in April.
December typically presents warmer temperatures compared to May, with averages ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), while May's temperatures range from a cooler minimum of 9°C (48°F) to a maximum of 25°C (78°F). Additionally, December sees less precipitation at 26 mm (1.0 in) over about 5 days, whereas May experiences more rainfall, totaling 63 mm (2.5 in) over approximately 7 days. Both months have similar humidity levels, with December at 77% and May slightly higher at 78%. For a detailed look at May's weather, you can visit Constantia weather in May.
In December, the weather is considerably warmer than in June, with minimum temperatures around 14°C (58°F) and an average high reaching 28°C (82°F). The month sees relatively low precipitation, with only 26 mm (1.0 in) falling over about five days, and humidity levels at 77%. In contrast, June experiences cooler temperatures, with a minimum of 9°C (48°F) and a maximum of 23°C (74°F). Additionally, it is much wetter in June, with a total precipitation of 103 mm (4.1 in) over approximately 11 days, leading to a slightly higher humidity of 79%. For a more detailed look at the weather in June, visit Constantia weather in June.
In December, the weather in Constantia is generally warmer, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), while July experiences cooler temperatures, peaking at 24°C (75°F) with a minimum of 7°C (45°F). Precipitation is significantly lower in December, with 26 mm (1.0 in) over 5 days, compared to July's 95 mm (3.7 in) over 10 days. Despite the slight difference in humidity, which is 77% in December and 80% in July, the overall feeling in December is one of warmth and relative dryness. For more detailed information, you can check Constantia weather in July.
When comparing the weather in December and August, it is evident that December tends to be warmer and drier. With average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), December enjoys milder conditions and less precipitation, averaging only 26 mm (1.0 in) over about 5 days. In contrast, August is cooler, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 24°C (76°F), and experiences significantly higher rainfall, totaling 75 mm (3.0 in) over 11 days. Both months share similar humidity levels, maintaining around 77%. For more detailed information on August weather, you can visit Constantia weather in August.
When comparing the weather in December and September, it’s evident that December is generally warmer, with average temperatures reaching 19°C (66°F) compared to September's 15°C (59°F). However, both months share the same maximum temperature of 28°C (82°F). December experiences less precipitation, with 26 mm over 5 days, while September has a higher rainfall of 45 mm over 8 days. Humidity remains relatively similar, with December at 77% and September slightly lower at 76%. For more detailed information about September weather patterns, you can check this link: Constantia weather in September.
December weather is generally warmer compared to October, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (82°F), whereas October features a cooler average with minimum temperatures at 11°C (51°F) and a maximum of 27°C (81°F). While both months experience similar humidity levels at 77% and five days of precipitation, December has notably lower rainfall at 26 mm (1.0 in) compared to October's 41 mm (1.6 in). For more detailed information, you can check Constantia weather in October.
In comparing the weather conditions of December and November, December generally experiences slightly warmer temperatures, with minimums of 14°C (58°F) and maximums reaching 28°C (82°F), compared to November's minimum of 12°C (53°F) and maximum of 25°C (77°F). The average temperature in December is also higher at 19°C (66°F) versus November’s 17°C (64°F). While December has lower precipitation levels at 26 mm (1.0 in) over five days, November sees slightly more rain with 33 mm (1.3 in) also over five days. Humidity remains comparable, with December at 77% and November at 75%. For a more detailed look at November weather specifics, visit Constantia weather in November.
As December unfolds in Constantia, the weather transforms into a warm and inviting tapestry, making it a standout month compared to the cooler, wetter winter months. With maximum temperatures soaring to a pleasant 28°C (82°F) and a comfortable average hovering around 19°C (66°F), residents and visitors alike can enjoy outdoor activities under the summer sun. Although occasional rain graces around five days, the modest 26 mm of precipitation ensures that lush greenery thrives, while the humidity remains at a cozy 77%. This unique blend of warmth and occasional refreshing rain makes December an ideal time to explore the beauty of Constantia's vineyards and scenic landscapes. For a detailed overview of what to expect throughout the year, visit Constantia Climate.