Last updated: August 31, 2025
In December, Saint Lucia Estuary experiences delightful summer conditions, with temperatures ranging from a comfortable 19°C (67°F) at night to a sunny 27°C (81°F) during the day, yielding an inviting average of 24°C (75°F). While the warmth sets the stage for great outdoor activities, visitors should prepare for approximately 92 mm (3.6 in) of rainfall spread over 14 days, contributing to the area's lush landscapes. With humidity levels soaring at 86%, the atmosphere creates a vibrant, tropical feel, making it an ideal time to explore the unique ecosystems and rich biodiversity that make Saint Lucia a stunning destination.
In December, the Saint Lucia Estuary experiences a delightful transition as temperatures begin to cool slightly while still retaining warmth. With minimums settling at 19°C (67°F) and average highs reaching 27°C (81°F), the conditions are pleasantly mild, perfect for exploring the stunning natural scenery. This month serves as a bridge to the cooler months ahead, marking a gradual decline from the peak warmth seen earlier in the year. As summer gives way to autumn, December's averages maintain a comfortable balance between warmth and refreshing breezes, making it an ideal time for outdoor adventures in this picturesque South African locale.
December in the Saint Lucia Estuary sees a notable shift in precipitation patterns as the year comes to a close, with 92 mm (3.6 in) of rain recorded over 14 days. This amount reflects a slight decrease from the preceding months, specifically from November, which tallied 119 mm (4.7 in) over 12 days. Despite this moderation in total rainfall, December's frequency of rainy days suggests a persistent, albeit lighter, wetness that characterizes the late spring and early summer period. As the landscape transitions into the new year, these patterns indicate a gradual reduction in precipitation—a trend that links back to the drier winter months observed earlier in the year, notably July with just 26 mm (1.0 in). Overall, December's rainfall serves as a gentle reminder of the region’s dynamic climate, blending moderation with the lingering vibrancy of summer rains.
In December, the humidity in the Saint Lucia Estuary remains high at 86%, continuing a trend observed throughout the year. After experiencing a peak in November at 87%, the humidity stabilizes, reflecting the area's humid subtropical climate. The data shows a gradual decline from May's 86% down to a low of 79% in August, followed by a resurgence as spring transitions into summer. While June and July present the lowest humidity levels at 80%, the overall consistency in higher humidity during the latter half of the year indicates a lush, vibrant ecosystem, thriving in the warmth and moisture of its tropical environment.
In December, Saint Lucia Estuary experiences a striking UV Index of 14, categorized as extreme, necessitating a brief burn time of just 10 minutes for unprotected skin. This intensity mirrors the levels seen in both January and February, highlighting a consistent trend of heightened UV radiation during the summer months. As the year draws to a close, the return to an extreme exposure category underscores the importance of sun protection. Comparatively, the months leading up to December show a gradual decline in UV levels, with April to June offering more moderate conditions, yet even then, caution is warranted. With such potent UV rays, visitors and locals alike should prioritize skin safety this December. For more information on the UV trends, visit Saint Lucia Estuary UV Index.
UV Risk Categories
December brings a radiant culmination to the year in the Saint Lucia Estuary, South Africa, with an impressive 356 hours of sunshine. This marks the highest monthly total, shining a warm light on the festive season. As the year draws to a close, sunshine hours exhibit a noticeable upward trend from June's low of 289 hours, consistently rising until December. Notably, summer months like January and February offer ample sunlight, but it's December that truly embraces the sunniest days, reflecting the charming allure of this tropical paradise. Visitors and locals alike can bask in the glorious weather, making it an ideal time to explore the stunning natural beauty of the estuary.
In December, the chance of sunny weather in Saint Lucia Estuary, South Africa, drops to a modest 28%, marking a noticeable decline from the sunnier months that preceded it. As we transition from the peak of winter in July, where sunshine peaks at 82%, the likelihood of clear skies undergoes a gradual decline, particularly in late autumn. This trend reflects the onset of the summer rainy season, with November also showcasing a similar low at 38%. Compared to the sunnier spells of earlier months, such as May and June with 68% and 72% sunny days respectively, December's overcast chances remind visitors to consider fitting indoor activities into their holiday plans.
As December arrives in the Saint Lucia Estuary of South Africa, the region basks in 13 hours of daylight, marking the high point of summer. This month, along with January and February, contributes to a vibrant trio of peak daylight durations, providing abundant sunshine for outdoor activities and nature exploration. Following this bright phase, daylight gradually decreases, starting in March with 12 hours and continuing downwards through the cooler months of April to August, when the region sees just 10 hours of light. The return of longer days begins in September, building back up to 11 hours in August and 12 hours by October, before leveling out again at 13 hours in the late spring months of November and December. This rhythmic pattern not only enhances biodiversity but also invites visitors to engage with the stunning landscapes and rich wildlife that flourish under the African sun.
In December, the wind in Saint Lucia Estuary begins to calm slightly, averaging 7.4 m/s (17 mph). This marks a gentle decline from the preceding months, where wind speeds peaked in August at 8.5 m/s (19 mph). As the year draws to a close, we observe a trend of relatively higher winds in the mid-year months from July to October, creating a breezy atmosphere ideal for outdoor activities. The steady winds throughout the year, however, ensure that the estuary remains a vibrant ecosystem, with December's conditions still supporting a comfortable coastal experience. The combination of mild temperatures and refreshing breezes is perfect for visitors seeking to enjoy the natural beauty of this unique South African landscape.
Weather in Saint Lucia Estuary varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Saint Lucia Estuary, focusing on differences in temperature, rainfall, humidity, and UV levels.
December in Saint Lucia Estuary typically sees slightly cooler temperatures, with a minimum of 19°C (67°F) and an average of 24°C (75°F), compared to January's warmer minimum of 22°C (71°F) and an average of 25°C (77°F). The maximum temperatures also rise in January, reaching up to 29°C (84°F) compared to December's peak of 27°C (81°F). Precipitation is higher in January, with 135 mm (5.3 in) over 13 days, versus December's 92 mm (3.6 in) across 14 days, although humidity remains similar at 86% in December and 85% in January. For a detailed look at January's weather, check out Saint Lucia Estuary weather in January.
December and February both showcase warm and humid weather, but there are notable differences. In December, temperatures range from a minimum of 19°C (67°F) to a maximum of 27°C (81°F), with an average of 24°C (75°F), while February sees slightly warmer temperatures, with a minimum of 22°C (72°F) and a maximum of 28°C (83°F), averaging 26°C (78°F). Additionally, February experiences significantly more rainfall, totaling 181 mm (7.1 in) over 17 days, compared to December's 92 mm (3.6 in) over 14 days. Despite the increased precipitation in February, both months maintain a high humidity level of 86%. For more detailed insights into February weather, you can check out Saint Lucia Estuary weather in February.
In December, the weather in Saint Lucia Estuary features a warm climate with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 27°C (81°F). The month sees significant precipitation, totaling 92 mm (3.6 in) over 14 days, while humidity remains high at 86%. In contrast, March experiences slightly warmer temperatures, with lows of 21°C (69°F) and highs reaching 28°C (83°F). This month is also wetter, recording 148 mm (5.8 in) of precipitation over 15 days, maintaining the same humidity level of 86%. For more detailed information, you can check Saint Lucia Estuary weather in March.
In comparing the weather of December and April, both months showcase warm temperatures with similar averages, hovering around 24°C (75°F). December has slightly lower maximum temperatures, peaking at 27°C (81°F), while April sees a higher high of 28°C (82°F). Precipitation is notably higher in April, with 118 mm (4.6 in) over 15 days compared to December's 92 mm (3.6 in) over 14 days. Humidity remains constant at 86% for both months, creating a consistently moist atmosphere. For more details on the weather in April, you can check Saint Lucia Estuary weather in April.
In December, the weather in Saint Lucia Estuary is characterized by slightly warmer temperatures, with averages around 24°C (75°F) and a maximum of 27°C (81°F). This month experiences a total precipitation of 92 mm (3.6 in) over approximately 14 days, alongside consistent humidity levels at 86%. In contrast, May brings slightly cooler conditions, with an average temperature of 22°C (73°F) and a maximum of 26°C (79°F). However, it sees an increase in rainfall, totaling 123 mm (4.8 in) over just 12 days, while maintaining the same humidity level of 86%. For more details, you can visit Saint Lucia Estuary weather in May.
When comparing the weather in December and June, December tends to be warmer and slightly more humid. December's minimum temperature averages around 19°C (67°F), peaking at 27°C (81°F), whereas June starts a bit cooler with a minimum of 17°C (63°F) and a maximum of 25°C (78°F). Precipitation is more frequent in December, occurring over 14 days with a total of 92 mm (3.6 in), compared to June's 69 mm (2.7 in) spread over just 7 days. Despite the higher rainfall in December, the humidity is also slightly elevated at 86%, compared to 80% in June. For more detailed insights, you can visit Saint Lucia Estuary weather in June.
In December, the weather is notably warmer and wetter compared to July. With temperatures ranging from a minimum of 19°C (67°F) to a maximum of 27°C (81°F) and an average of 24°C (75°F), December experiences a significant amount of rainfall, totaling 92 mm (3.6 in) across 14 days, alongside higher humidity levels at 86%. In contrast, July presents a cooler climate, with temperatures ranging from 14°C (58°F) to 26°C (78°F) and an average of 20°C (69°F). Rainfall is considerably less, with only 26 mm (1.0 in) over 8 days and humidity at a more comfortable 80%. For more detailed information, check out Saint Lucia Estuary weather in July.
When comparing the weather in December and August, December tends to be warmer and more humid. December boasts a minimum temperature of 19°C (67°F) and an average high of 27°C (81°F), while August has cooler temperatures, with a minimum of 15°C (59°F) and an average maximum of 26°C (78°F). Additionally, December receives more precipitation, averaging 92 mm (3.6 in) over 14 days compared to August's 61 mm (2.4 in) over 11 days. The humidity also rises in December, reaching an average of 86%, in contrast to August's 79%. For more detailed weather insights, you can check Saint Lucia Estuary weather in August.
In comparing the weather of December and September, we observe that December tends to be slightly warmer, with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 27°C (81°F). In contrast, September has a cooler average range, with minimum temperatures at 15°C (60°F) and the same maximum of 27°C (81°F). Precipitation is also more pronounced in December, with 92 mm (3.6 in) over approximately 14 days, compared to September's 63 mm (2.5 in) across 9 days. Humidity levels remain fairly similar, with December at 86% and September at 85%. For a detailed look at September weather in this region, visit Saint Lucia Estuary weather in September.
In December, the weather is slightly warmer compared to October, with average temperatures increasing from 21°C (70°F) in October to 24°C (75°F) in December. While both months experience similar humidity levels at 86%, December sees a marginally higher maximum temperature of 27°C (81°F) compared to October's 28°C (84°F). Precipitation levels are comparable, with December recording 92 mm (3.6 in) over 14 days, slightly above October's 90 mm (3.5 in) over 13 days. For more detailed information on October's weather, you can visit Saint Lucia Estuary weather in October.
In December, the weather shows a slight increase in average temperatures compared to November, with minimums rising from 17°C (63°F) to 19°C (67°F) and averages climbing from 23°C (73°F) to 24°C (75°F). However, despite the warmer temperatures, December experiences a decrease in maximum temperature, dropping from 28°C (83°F) to 27°C (81°F). Precipitation is also slightly lower in December at 92 mm (3.6 in) over 14 days, compared to November's 119 mm (4.7 in) across 12 days. Humidity remains fairly consistent, with December at 86% and November at 87%. For more detailed information, you can visit Saint Lucia Estuary weather in November.
As December unfolds in Saint Lucia Estuary, the weather takes on a warm and humid character, creating a vibrant tropical atmosphere that's distinct from other months. While temperatures reach a pleasant average of 24°C, the increased humidity at 86% inevitably makes it feel even warmer. Rainfall is common, with 14 days seeing a total of 92 mm, hinting at the transition into the wetter summer months. This month not only brings warmth but also a lush, green backdrop that enhances the region's natural beauty. For a deeper dive into the seasonal variations and climate trends, check out the detailed Saint Lucia Estuary Climate.