Last updated: August 31, 2025
December in Arniston, South Africa, offers a pleasant seaside climate characterized by a maximum temperature of 25°C (78°F) and an average of 19°C (67°F), creating a warm and inviting atmosphere. The minimum temperature hovers around 15°C (59°F), ensuring comfortable evenings. Visitors should be prepared for some light rain, as the month sees approximately 30 mm (1.2 in) of precipitation spread over 6 days, contributing to the region's lush greenery. With humidity levels around 79%, the air is rich and invigorating, making December an ideal time to enjoy the natural beauty and charm of this coastal gem.
In December, Arniston, South Africa, experiences a pleasant transition into summer, characterized by relatively mild temperatures. The minimum temperature hovers around 15°C (59°F), while the average reaches a comfortable 19°C (67°F). As the month progresses, the maximum temperature typically peaks at 25°C (78°F), offering ideal conditions for outdoor activities and beach escapades. This month's weather reflects a broader trend observed throughout the year: a gradual warming from winter’s cooler temperatures, with December standing out as a month of mild warmth, making it perfect for exploring the stunning coastal landscapes of this charming seaside village.
In December, Arniston experiences an average precipitation of 30 mm (1.2 in) over 6 days, marking a slight decrease from the wetter months that precede it. This month's rainfall is part of a gradual trend seen throughout the southern hemisphere's summer season, where precipitation tends to fluctuate around the 30 mm mark in December. Compared to the heavier downpours of May and August, which record 50 mm and 53 mm respectively, December's rainfall provides a welcome but moderate relief, hinting at a transition towards more stable and drier conditions as the year draws to a close. The consistent pattern of 6 to 11 rainy days across the preceding months underscores a relatively moist climate, making December a serene interlude before the drier months ahead.
In December, humidity in Arniston, South Africa, is recorded at 79%, which reflects a slight decline from the peak record seen in March and April. Throughout the year, humidity tends to hover around the 77% to 83% range, showcasing a generally consistent climate. Interestingly, as the year winds down, December's humidity aligns closely with January and October figures, creating a sense of continuity as summer approaches. This pattern indicates that while Arniston experiences variations in moisture levels, the overall trend remains stable, promising a comfortable environment for residents and visitors alike during the festive season.
In December, Arniston experiences a UV Index of 13, categorized as extreme, with a burn time of just 10 minutes. This trend mirrors the preceding months of October and November, where the UV levels also reached extreme heights, reinforcing the necessity for vigilance when enjoying the outdoors. As the year draws to a close, the UV index begins to taper off from its highest point in January, but December maintains its intensity, typical of the South African summer. To ensure safety and enjoyment under the sun, residents and visitors should be prepared with adequate protection. For more details, visit Arniston UV Index.
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December in Arniston, South Africa, shines brightly with 413 hours of sunlight, making it the sunniest month of the year. This increase in daylight follows a seasonal trend, as hour counts gradually rise from a low of 269 hours in June to a peak in December. The sunshine in Arniston not only brings longer days but also sets the stage for vibrant outdoor activities and stunning coastal vistas. With December experiencing the highest sunlight exposure, it captures the essence of the summer season, exemplifying the region's appeal to visitors seeking warmth and beauty at this time of year. This consistent trend of increasing sunlight hours culminates in a festive atmosphere, inviting everyone to bask in the December sunshine.
In Arniston, South Africa, December heralds the arrival of summer but, intriguingly, presents the lowest likelihood of sunny weather for the year, with only a 41% chance of sunshine. This decline in sunny days contrasts sharply with the more promising forecasts from earlier months, such as January and February, which boast probabilities of 58% and 60% respectively. As we transition from the vibrant heights of summer into the cooler months, the chance of clear skies dips, suggesting that holidaymakers might encounter a mix of sunshine and clouds during their festive celebrations. While December continues to offer warmer temperatures, the trend indicates a shift toward more overcast days, reminding visitors to embrace the unique charm of Arniston, rain or shine.
In Arniston, South Africa, the daylight duration showcases a captivating rhythm throughout the year. As the year unfolds, January and December bask in 14 hours of daylight, offering the longest days of sunshine. This abundant light gradually tapers off in the spring and early fall, reaching its shortest point in June with just 9 hours. Following this low, daylight begins to crawl back, bringing 10 hours in July and August, before steadily increasing again. By the time November arrives, the days stretch back to 13 hours, preparing for the return of the year's fullest light in December. This pattern not only highlights the changing seasons but also invites residents and visitors to revel in the sun-soaked beauty of Arniston year-round.
In December, Arniston, South Africa, experiences a notable increase in average wind speed, reaching 6.9 m/s (15 mph), just slightly higher than January's peak of 6.8 m/s (15 mph). This uptick marks a transition as the winds begin to pick up again after a series of gentle breezes in the cooler months, particularly from April to August, where speeds hovered around 5.0 to 5.8 m/s (11 to 13 mph). The late spring and summer months bring a refreshing vigor to the coastal air, creating an invigorating atmosphere for both locals and visitors. With these dynamic winds fostering a lively coastal environment, December in Arniston heralds the onset of summer, setting the stage for outdoor adventures under the South African sun.
Weather in Arniston varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Arniston, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather typically ranges from a minimum of 15°C (59°F) to a maximum of 25°C (78°F), with an average temperature of 19°C (67°F). During this month, precipitation averages about 30 mm (1.2 in) spread over 6 days, while humidity remains relatively high at 79%.
In contrast, January sees slightly warmer conditions with temperatures ranging from a minimum of 16°C (61°F) to a maximum of 26°C (80°F), averaging 21°C (70°F). The month experiences a bit less rainfall, with an average of 26 mm (1.0 in) over just 5 days. Despite these minor differences, humidity levels remain consistent at 79%. For more details, check out Arniston weather in January.
In December, the weather features a comfortable range of temperatures, with a minimum of 15°C (59°F), an average of 19°C (67°F), and a maximum of 25°C (78°F). The month sees about 30 mm (1.2 in) of precipitation over approximately 6 days, coupled with a humidity level of 79%. In contrast, February experiences slightly warmer conditions, with a minimum temperature of 16°C (62°F), an average of 21°C (70°F), and a maximum of 26°C (80°F). Precipitation decreases to 18 mm (0.7 in) over 5 days, and humidity rises to 82%. For more details on February weather, visit Arniston weather in February.
December and March exhibit similar temperature ranges, with December experiencing minimums of 15°C (59°F) and averages around 19°C (67°F), while March sees a slight increase, with averages of 20°C (69°F) and maximums reaching 27°C (80°F). Both months have the same number of precipitation days, but March has higher rainfall at 43 mm (1.7 in) compared to December's 30 mm (1.2 in). Moreover, humidity is slightly higher in March at 83%, compared to December's 79%. This creates a slightly more humid atmosphere as the seasons transition. For further details, you can check Arniston weather in March.
In comparing December and April weather, December generally experiences slightly higher temperatures, with minimums around 15°C (59°F) and maximums reaching 25°C (78°F), while April features a comparable minimum of 14°C (57°F) but can peak at a warmer 28°C (83°F). Precipitation is slightly higher in December, totaling 30 mm (1.2 in) over six days compared to April's 23 mm (0.9 in) under similar conditions. Humidity levels are also close, with December at 79% and April slightly higher at 82%. Overall, while both months share similarities, April offers a warmer maximum temperature and slightly less rainfall. For more detailed insights, you can visit Arniston weather in April.
In December, the weather is generally warmer with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 25°C (78°F), while May sees slightly cooler temperatures with a minimum of 11°C (53°F) and a maximum of 28°C (82°F). While December experiences less precipitation at 30 mm (1.2 in) over 6 days, May is wetter with 50 mm (2.0 in) over just 5 days. Humidity levels are quite similar in both months, hovering around 79% in December and 78% in May. For more detailed information on May conditions, you can visit Arniston weather in May.
December and June present contrasting weather experiences. In December, temperatures are warmer, with a minimum of 15°C (59°F), an average of 19°C (67°F), and a maximum reaching 25°C (78°F). The rainfall is relatively low at 30 mm (1.2 in) over about 6 days, accompanied by a humidity level of 79%. In contrast, June features cooler temperatures, with a minimum of 9°C (49°F), an average of 15°C (60°F), and a maximum of 25°C (77°F). However, it is wetter in June, with precipitation amounting to 45 mm (1.8 in) over approximately 8 days and a slightly lower humidity of 77%. For more detailed insights, you can explore Arniston weather in June.
December and July exhibit notable differences in weather conditions. In December, temperatures are generally warmer, with minimums around 15°C (59°F) and averages reaching up to 19°C (67°F), while July sees cooler temperatures, with a minimum of about 9°C (49°F) and an average of 14°C (58°F). Both months experience a maximum of 25°C (77°F), but July has higher precipitation levels, totaling 45 mm (1.8 in) over 7 days, compared to December's 30 mm (1.2 in) across 6 days. Humidity remains relatively consistent between the two months, at 79% in December and slightly lower at 78% in July. For more detailed information on July weather, you can visit Arniston weather in July.
When comparing the weather in December and August, it's clear that December tends to be warmer with average temperatures ranging from 15°C (59°F) to 25°C (78°F), whereas August experiences cooler conditions with temperatures between 8°C (47°F) and 25°C (77°F). December also has slightly higher humidity at 79%, compared to August's 76%. Precipitation is more frequent in August, with rain occurring on 11 days and totaling 53 mm (2.1 in), while December sees less rainfall at 30 mm (1.2 in) over 6 days. For more details on the weather during this month, check out Arniston weather in August.
In December, the weather tends to be warmer than in September, with temperatures ranging from a mild 15°C (59°F) to a comfortable maximum of 25°C (78°F), compared to September's cooler temperatures, which range from 10°C (51°F) to a high of 30°C (85°F). While December experiences slightly less precipitation at 30 mm (1.2 in) over 6 days, September sees a bit more rainfall at 34 mm (1.4 in) over 7 days, resulting in a marginally higher humidity level of 79% in December compared to 77% in September. For a closer look at September's weather, you can check out Arniston weather in September.
December generally offers milder temperatures compared to October, with a minimum of 15°C (59°F) and an average high of 25°C (78°F). In contrast, October sees a slightly lower minimum temperature of 11°C (53°F) and a peak of 28°C (82°F). Both months experience similar humidity levels at 79% and comparable precipitation, with December receiving 30 mm (1.2 in) over 6 days, while October has 33 mm (1.3 in) spread across 7 days. For more detailed insights into October's weather, you can check Arniston weather in October.
In December, the weather is slightly warmer than in November, with minimum temperatures rising to 15°C (59°F) and an average of 19°C (67°F), compared to November’s minimum of 12°C (54°F) and an average of 18°C (64°F). Both months experience a maximum temperature of 25°C (78°F), but December tends to be wetter with 30 mm (1.2 in) of precipitation over 6 days, while November records 35 mm (1.4 in) under the same number of rainy days. Humidity in December is marginally higher at 79% compared to November’s 77%. For more details about the weather conditions in November, you can visit Arniston weather in November.
In December, Arniston transforms into a delightful coastal retreat, boasting warmer temperatures and a notably high humidity that breathes life into the summer days. With average highs around 25°C (78°F) and a charmingly mild minimum, this month often feels more vibrant compared to the cooler, wetter months preceding it. While the 30 mm of precipitation may bring some refreshing showers, the overall atmosphere is crisp and invigorating, making it a perfect time to explore outdoor activities. For those curious about what to expect throughout the year, visit Arniston Climate for detailed insights.