Last updated: August 31, 2025
December in Port Saint John's, South Africa, features vibrant weather characterized by a maximum temperature soaring to 31°C (88°F) and an average of 21°C (70°F), making it a warm tropical escape. However, the month also brings frequent showers with a total precipitation of 129 mm (5.1 in) over approximately 18 days, resulting in a humidity level of 88% that enhances the lush coastal scenery. Visitors can expect a mix of sunny days interspersed with refreshing rain, creating the perfect backdrop for a tropical adventure.
In December, Port Saint John’s experiences a delightful transition into summer, characterized by warm temperatures that invite outdoor adventures. With minimums around 13°C (56°F) and averages rising to 21°C (70°F), it's a comfortable time to enjoy the scenic beauty of the coast. The temperatures peak at a pleasant 31°C (88°F), maintaining a trend of warm weather that starts in November and continues into the new year. This gradual increase hints at the region's appealing climate, perfect for sunseekers and nature enthusiasts alike, as the month blends warmer days with the refreshing ocean breeze. Overall, December in Port Saint John’s presents a vibrant atmosphere, making it an ideal destination for travelers looking to bask in the summer sun.
In December, Port Saint John's experiences a notable uptick in precipitation, with 129 mm (about 5.1 in) of rainfall recorded over 18 days. This consistent rainfall continues the trend established in the previous months, where late spring and early summer see higher precipitation levels. The month serves as a bridge between the relatively dry winter and the lush, vibrant summer, highlighting a gradual increase from November's 123 mm. As the year winds down, residents and visitors alike can expect a lively atmosphere shaped by the refreshing rains that nourish the region's rich biodiversity. This symbiotic relationship between rain and nature makes December a vital time in the ecological calendar of Port Saint John's.
December in Port Saint John's, South Africa, sees humidity levels reaching 88%, consistent with the preceding months of January through May, which all hover around the same mark. This stability highlights the area's tropical characteristics during the summer season. Interestingly, there's a gradual decline in humidity from mid-year, with July and August experiencing the lowest levels at 77% and 72%, respectively. As the year wraps up, humidity levels rebound slightly, reflecting the lingering warmth of the southern hemisphere's summer. Overall, December's humidity is indicative of a pattern where high moisture content prevails, creating a rich and lush environment characteristic of this beautiful coastal region.
In December, Port Saint John's experiences one of its highest UV Index levels at 14, categorized as extreme, which means you'll need to take extra precautions with a mere 10 minutes of sun exposure potentially leading to skin burns. This trend of higher UV readings sees a peak during the summer months, starting from January through March, where the index remains consistently high at 14 and 13. Although there’s a slight decrease in the UV Index in the subsequent months, it remains notably elevated at 12 in November and resurges back to 14 in December, underscoring the necessity for vigilance against UV rays year-round. For those looking to understand their sun exposure better, visit Port Saint John's UV Index for more insights.
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December in Port Saint John's, South Africa, truly shines with an impressive 358 hours of sunlight, marking it as one of the sunniest months of the year. As the year draws to a close, the trend towards increased sunshine becomes evident, peaking in December after a steady rise from 287 hours in January. This gradual escalation in daylight hours highlights the vibrant transitions through the seasons, with the sun’s presence becoming increasingly generous from late spring to summer. With December basking in radiant warmth, it beckons both locals and visitors to indulge in the natural beauty and outdoor adventures that the region has to offer.
In Port Saint John's, South Africa, the likelihood of sunny weather experiences a notable decline in December, with a mere 21% chance of sunshine. This drop marks a significant contrast against the much sunnier months leading up to it, such as July, where the sun shines 86% of the time. The trend reveals a gradual increase in sunny opportunities from the onset of the year, peaking around mid-year before tapering off as December arrives. Following the warm and bright months of May and June, which enjoy odds of 72% and 69%, respectively, December stands out with one of the lowest probabilities of sunlight, highlighting the shift towards a more overcast and potentially rainy season.
In December, Port Saint John's basks in a generous 14 hours of daylight, marking the peak of the region's sunshine as summer unfolds. This month stands out in contrast to the shorter days of the earlier months, where daylight gradually decreases from 13 hours in November and 12 hours in October. Following this trend, the length of daylight dips to 11 hours in April and further declines to just 10 hours from May through August. However, as spring approaches in September, the days begin to lengthen again, reaching 12 hours in October before returning to the vibrant 13 hours in November. This rhythmic pattern illustrates the seasonal shift and the increasing daylight that accompanies the summer months, encouraging outdoor exploration and vibrant community activities.
As December settles in over Port Saint John's, South Africa, the average wind speed hovers around a gentle 3.5 m/s (8 mph), maintaining the consistent breeziness characteristic of late spring. Notably, this aligns seamlessly with the trend observed throughout the year, where wind speeds generally remain around the 3.0 to 3.8 m/s mark. The winds gradually picked up from the calmness experienced in April and May, peaking in October at 3.8 m/s before softly tapering off. Overall, December's winds offer a delightful backdrop for coastal activities, continuing the rhythm of the seasons while enhancing the stunning vistas of Port Saint John's.
Weather in Port Saint John's varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Port Saint John's, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January experience relatively warm weather, but there are noticeable differences between the two months. In December, temperatures range from a minimum of 13°C (56°F) to a maximum of 31°C (88°F), with an average temperature of 21°C (70°F). It also sees higher rainfall, with 129 mm (5.1 in) of precipitation spread over 18 days. In contrast, January is slightly warmer with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F), and an average of 22°C (73°F). The precipitation decreases to 101 mm (4.0 in) over 15 days, while humidity remains consistent at 88%. For more details about January's climate, visit Port Saint John's weather in January.
In comparing the weather of December and February, we see a gradual warming trend. December experiences a minimum temperature of 13°C (56°F) and an average of 21°C (70°F), while February sees slightly warmer temperatures with a minimum of 15°C (59°F) and an average of 23°C (73°F). The maximum temperature also rises, reaching 31°C (88°F) in December compared to 34°C (93°F) in February. Rainfall is relatively consistent, with December recording 129 mm (5.1 in) over 18 days and February slightly higher at 137 mm (5.4 in) over 17 days. Humidity remains steady at 88% for both months. For more details on February weather, you can visit Port Saint John's weather in February.
In December, temperatures in the region typically range from a minimum of 13°C (56°F) to a maximum of 31°C (88°F), with an average temperature of 21°C (70°F). This month also sees considerable precipitation, averaging 129 mm (5.1 in) over 18 days, and a high humidity level of 88%. In contrast, March experiences slightly warmer conditions, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 33°C (92°F) and an average of 22°C (72°F). Precipitation in March is marginally lower at 126 mm (4.9 in) across 16 days, coupled with a similar humidity level of 89%. For more detailed information on March weather patterns, you can visit Port Saint John's weather in March.
In comparing the weather patterns of December and April, it’s evident that both months experience relatively warm temperatures, with December averaging around 21°C (70°F) and April slightly lower at 20°C (68°F). Notably, April has a slightly higher maximum temperature, reaching 33°C (92°F) compared to December's 31°C (88°F). Precipitation levels are quite similar, with December seeing 129 mm (5.1 in) over 18 days and April recording 130 mm (5.1 in) over just 12 days, indicating that April may have more intense rain showers. Humidity is also comparable, with December at 88% and April at 89%. Overall, while both months are humid and wet, April presents slightly warmer extremes and fewer rainy days. For more specific details, you can check Port Saint John's weather in April.
In December, temperatures range from a minimum of 13°C (56°F) to a maximum of 31°C (88°F), with an average of 21°C (70°F). The month experiences significant rainfall, accumulating 129 mm (5.1 in) over 18 days, resulting in a humid environment with a humidity level consistently around 88%. In contrast, May sees cooler temperatures: a minimum of 8°C (47°F) and an average of 18°C (65°F), while still reaching a maximum of 31°C (87°F). It also features far less rainfall, with only 53 mm (2.1 in) over just 4 days, maintaining the same 88% humidity. For a more detailed look at the weather in May, you can check Port Saint John's weather in May.
In December, temperatures in Port Saint John range from a minimum of 13°C (56°F) to a maximum of 31°C (88°F), with an average of 21°C (70°F). The month is characterized by high humidity at 88% and considerable rainfall, receiving 129 mm (5.1 in) across 18 days. In contrast, June experiences cooler temperatures, with a minimum of 7°C (46°F) and an average of 16°C (61°F), while reaching a similar maximum of 30°C (86°F). June's weather is much drier, with only 33 mm (1.3 in) of precipitation occurring over just 3 days and slightly lower humidity at 82%. For more details, you can explore Port Saint John's weather in June.
In contrast to December, which boasts a warmer climate with temperatures ranging from a minimum of 13°C (56°F) to a maximum of 31°C (88°F) and an average of 21°C (70°F), July experiences cooler weather, with temperatures ranging from 6°C (43°F) to 31°C (87°F) and an average of 16°C (61°F). December is characterized by higher humidity at 88% and significant precipitation, receiving 129 mm (5.1 in) over 18 days, while July is much drier, with only 10 mm (0.4 in) of rain over just 2 days and lower humidity levels at 77%. This seasonal contrast highlights December's more tropical conditions compared to the mild and drier July climate. For more details on July weather, check out Port Saint John's weather in July.
In comparing the weather between December and August, we see significant differences in both temperature and precipitation. December enjoys warmer temperatures, with averages ranging from a minimum of 13°C (56°F) to a maximum of 31°C (88°F), while August temperatures range from a cooler 7°C (45°F) to 30°C (86°F) on average. Additionally, December is more humid, featuring an average humidity level of 88% compared to August's 72%. Rainfall also varies considerably, with December receiving 129 mm (5.1 in) over 18 days, in contrast to August’s relatively dry conditions with only 51 mm (2.0 in) across 8 days. For more detailed information, visit Port Saint John's weather in August.
In comparing December and September weather, we can observe some significant differences. December features a warmer temperature range, with minimums around 13°C (56°F) and maximums reaching up to 31°C (88°F), compared to September's lower temperatures, which span from 9°C (48°F) to a maximum of 34°C (94°F). Moreover, December experiences higher humidity levels at 88% and more frequent rainfall, averaging 129 mm (5.1 in) over 18 days, while September has less precipitation, totaling 62 mm (2.4 in) over just 10 days. For more detailed insights on the weather during September, check out Port Saint John's weather in September.
In comparing the weather patterns of December and October, December tends to be warmer with an average temperature of 21°C (70°F) and maximums reaching up to 31°C (88°F), while October has a slightly cooler average of 18°C (65°F) and can peak at 34°C (93°F). Precipitation is also a significant factor; December experiences more rainfall with 129 mm (5.1 in) over 18 days compared to October’s 111 mm (4.4 in) across 13 days. Humidity levels are higher in December at 88%, compared to October's 83%, indicating a more humid climate as the year comes to a close. For more specific details on October's weather, you can visit Port Saint John's weather in October.
In comparing the weather of December and November, December tends to be slightly warmer overall, with average temperatures reaching 21°C (70°F) compared to November's 19°C (67°F). However, November boasts slightly higher maximum temperatures, peaking at 34°C (93°F), while December's maximum is 31°C (88°F). Both months experience similar levels of precipitation, with December receiving 129 mm (5.1 in) over 18 days and November having 123 mm (4.9 in) over the same number of days. Humidity levels are also comparable, with December at 88% and November at 87%. For more detailed information, you can check Port Saint John's weather in November.
As December rolls in, Port Saint John transforms into a warm coastal paradise, where the blend of high humidity and increased rainfall sets it apart from other months. With temperatures peaking at a toasty 31°C (88°F), visitors experience a vibrant atmosphere ripe for outdoor adventures. However, it's essential to prepare for the showers that arrive on approximately 18 days, contributing to the area's lush landscapes. This month stands out not only for its warmth but also for its embrace of moisture, making December a unique chapter in Port Saint John's eclectic climate story. For a deeper insight into the weather patterns throughout the year, explore Port Saint John's Climate.