Last updated: February 24, 2025
In December, Port Royal experiences a notable contrast in weather, with temperatures ranging from a cool minimum of -3°C (26°F) to a pleasant maximum of 26°C (79°F), averaging around 12°C (54°F). This month is marked by high humidity levels at 87%, contributing to a damp atmosphere. Rainfall is common, with a total of 116 mm (4.6 in) spread over 9 days, making it essential for visitors to prepare for occasional showers. The blend of varied temperatures and significant precipitation characterizes December, offering a unique coastal experience.
December in Port Royal, United States, marks a significant dip in temperatures as the year draws to a close. With a minimum of -3°C (26°F), residents can feel winter's chill set in, contrasting sharply with the warmer months that precede it. The average temperature hovers around 12°C (54°F), suggesting a cozy transition to holiday festivities amidst brisk outdoor conditions. Daytime highs reach a pleasant 26°C (79°F), providing opportunities for outdoor activities, albeit with a hint of winter's grip. This month sets the stage for colder months ahead while still offering a glimpse of the warmth that summer brings, highlighting the region's dynamic climatic shifts.
In December, Port Royal experiences an average precipitation of 116 mm (4.6 in), marking a notable uptick as the year draws to a close. This figure is reflective of a wet month, with rainfall occurring over approximately 9 days. Comparatively, December’s precipitation is higher than several other months, including October and November, suggesting a trend towards wetter winters in this coastal region. The gradual increase in precipitation from the relatively drier months earlier in the year, notably January and February, underscores a seasonal shift that enriches the local landscape, preparing it for the coming year. Overall, December serves as a pivotal month, bridging the tail end of the wet season before the lighter rains of January begin.
In December, Port Royal experiences a notable uptick in humidity, reaching 87%, the highest level for the year. This is a part of a winter trend where humidity levels begin to rise again after a dip in late autumn. From November's 85%, the increase reflects a shift away from the slightly drier months of October and May, both averaging around 78-75%. Generally, the region showcases a consistent pattern of elevated humidity from January through April, where levels remain above 79%, before tapering off slightly in the warmer summer months. The gradual rise in humidity as the year closes indicates a return to the damp and mild conditions characteristic of the season in Port Royal, making December feel distinctly lush and vibrant.
As the year winds down, December in Port Royal, United States, sees a noticeable shift in UV exposure, returning to a more moderate UV Index of 4. This decrease provides a respite from the intense sun experienced in the peak summer months, where indexes soared to an extreme 11 from May to August, demanding just 10 minutes of sun before burning. As the seasons changed, the UV levels gradually decreased, with November showing a high Index of 6 and a burn time of 25 minutes. December allows residents and visitors to enjoy the outdoors with a comfortable 30-minute burn time, making this month a perfect opportunity to bask in the milder sun while still keeping skin protection in mind. For detailed information and UV forecasts, visit Port Royal UV Index.
UV Risk Categories
December in Port Royal, United States, sees a bright continuation of a year filled with abundant sunshine, as it boasts 218 hours of sunshine. While this month may lack the peak hours found in the summer, it's a notable contrast to the dreary winter months many experience elsewhere. Throughout the year, the trend shows a gradual increase in sunshine from January's 192 hours to May's impressive 338 hours, reaching a high of 347 hours in July. As the seasons shift into fall and winter, there's a gentle decline, yet December holds onto a respectable amount of sunshine, indicating that even in the cooler months, Port Royal remains a sun-kissed retreat, inviting residents and visitors to bask in its warm glow.
In Port Royal, December brings a 42% chance of sunny weather, a slight dip compared to the previous month's 63% likelihood. Throughout the year, the trend shows that as temperatures cool, the chances of sunny days tend to decline, with summer months like June through August hitting a low of 27% to 30%. This indicates a clear seasonal shift, as the arrival of fall and winter increases the likelihood of cloud cover and precipitation. However, December still offers more sunlight than the winter months of January to March, suggesting that while sunny days may be less frequent, they still punctuate the cooler month with bright opportunities.
As December settles in Port Royal, the daylight duration mirrors the earlier months of the year, offering 10 hours of light each day. This marks a continuation of the trend observed from November, where days are gradually getting shorter. Following the vibrant summer months of June and July, which bask in 14 hours of daylight, the transition into autumn reveals a steady decline, culminating in the shorter winter days. With daylight gradually increasing from the depths of winter into the brighter months ahead, residents can anticipate the natural rhythms of daylight returning with the new year.
As December blankets Port Royal in a cool embrace, the average wind speed comes to a gentle 3.1 m/s (7 mph), echoing the calming breezes of late autumn. Observing the year’s trend, we note a gradual decline in wind speeds from the spring months, where gusts reached their highest at 3.5 m/s (8 mph) in both March and April. This decrease continues through the summer, hitting its lowest point in September at just 2.4 m/s (5 mph), before slightly picking up again as the year closes. Despite the ebb and flow of winds, December's breeziness serves as a serene prelude to the winter season, inviting both residents and visitors to enjoy the crisp, refreshing air of Port Royal.
The weather in Port Royal changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Port Royal and find detailed weather information for every month.
When comparing the weather in December and January, notable differences emerge. December experiences a more moderate temperature range, with a minimum of -3°C (26°F) and an average of 12°C (54°F), while January sees a drop in the minimum temperature to -11°C (13°F) and a slightly lower average of 11°C (52°F). Additionally, December has higher precipitation at 116 mm (4.6 in) over 9 days, compared to January's 59 mm (2.3 in) across just 6 days. Humidity levels are quite similar, with December at 87% and January slightly lower at 86%. For more detailed insights, you can check the Port Royal weather in January.
When comparing December and February weather, December typically experiences slightly colder temperatures with a minimum of -3°C (26°F) and an average of 12°C (54°F), while February sees a mild increase, with a minimum of -2°C (28°F) and an average of 14°C (57°F). In terms of maximum temperatures, December reaches up to 26°C (79°F), whereas February can peak at 29°C (84°F). Precipitation is more frequent in December, accumulating 116 mm (4.6 in) over 9 days, compared to February's 78 mm (3.1 in) over the same number of days. Additionally, December has a higher humidity level at 87%, dropping to 81% in February. For more detailed insights into February's climate, you can check Port Royal weather in February.
In December, temperatures range from a chilly minimum of -3°C (26°F) to a warm maximum of 26°C (79°F), with an average temperature of around 12°C (54°F). The month sees significant precipitation, totaling 116 mm (4.6 inches) over 9 days, and humidity levels are quite high at 87%. In contrast, March experiences a more temperate climate, with minimum temperatures slightly warmer at -2°C (29°F) and maximums reaching 32°C (90°F), leading to an average of 16°C (61°F). Precipitation is reduced to 67 mm (2.6 inches) over just 7 days, and humidity levels drop to 81%. For a detailed look at March weather specifics, visit Port Royal weather in March.
The weather in December is characterized by cooler temperatures, with a minimum of -3°C (26°F) and an average of 12°C (54°F), while April experiences a milder climate, starting with a minimum of 3°C (37°F) and averaging around 19°C (67°F). December sees more rainfall, with 116 mm (4.6 in) spread over 9 days, compared to April's 90 mm (3.6 in) over just 7 days. Additionally, December's humidity is higher at 87%, while April's humid levels drop to 79%, contributing to a more comfortable atmosphere. For more details on April weather, you can check out Port Royal weather in April.
In comparing the weather of December and May, we see a stark contrast. December experiences cooler temperatures, with averages around 12°C (54°F) and a maximum reaching 26°C (79°F), while May boasts much warmer conditions, averaging 24°C (75°F) and soaring up to a maximum of 38°C (100°F). Precipitation is also notable; December receives around 116 mm (4.6 in) over approximately 9 days, whereas May has slightly less rainfall at 93 mm (3.7 in) across 11 days. Additionally, the humidity in December is higher at 87%, compared to May's 75%. For more detailed insights into May's climate, you can check Port Royal weather in May.
December and June present striking contrasts in weather. In December, temperatures range from a chilly -3°C (26°F) to a comfortable average of 12°C (54°F), peaking at 26°C (79°F). The month sees about 116 mm (4.6 in) of precipitation over approximately 9 days, coupled with a high humidity level of 87%. In contrast, June boasts much warmer conditions, with temperatures starting at a mild 16°C (61°F) and reaching an average of 26°C (79°F), and soaring to a maximum of 36°C (97°F). The rainfall in June is slightly higher at 139 mm (5.5 in), occurring over 18 days, but the humidity is notably lower at 75%. For more details on the weather during this month, check out Port Royal weather in June.
December and July present striking contrasts in weather. In December, temperatures range from a chilly -3°C (26°F) to a mild 26°C (79°F), with an average of 12°C (54°F). The month experiences approximately 116 mm (4.6 in) of precipitation over 9 days, accompanied by high humidity at 87%. In contrast, July boasts significantly warmer temperatures, with a minimum of 20°C (69°F) and a maximum of 36°C (98°F), averaging around 28°C (82°F). This summer month sees greater rainfall, totaling 174 mm (6.8 in) over 19 days, but the humidity is slightly lower at 80%. For a closer look at July's climate, you can visit Port Royal weather in July.
The weather in December showcases a significant contrast to that of August. In December, temperatures range from a chilly -3°C (26°F) to a pleasant 26°C (79°F), with an average of 12°C (54°F). It is generally wetter than August, with 116 mm (4.6 in) of precipitation over approximately 9 days, resulting in high humidity levels at 87%. In comparison, August offers warm temperatures, with lows of 21°C (69°F) and highs reaching up to 37°C (99°F), averaging around 27°C (81°F). While it experiences higher precipitation at 184 mm (7.3 in) over 22 days, humidity remains slightly lower at 81%. For a more detailed look at weather patterns, check out Port Royal weather in August.
The weather in December contrasts significantly with that of September. In December, temperatures range from a chilly minimum of -3°C (26°F) to a maximum of 26°C (79°F), with an average of 12°C (54°F), while September enjoys much warmer conditions, with temperatures ranging from a mild minimum of 14°C (57°F) to a hot maximum of 35°C (96°F) and an average of 26°C (78°F). Both months experience substantial precipitation, with December receiving 116 mm (4.6 in) over an average of 9 days and September slightly higher at 120 mm (4.7 in) across 14 days. Additionally, December's humidity is slightly higher at 87%, compared to September's 83%. For more details on September weather, you can check Port Royal weather in September.
In comparing the weather between December and October, notable differences emerge. December experiences colder temperatures with a minimum of -3°C (26°F) and an average of 12°C (54°F), whereas October boasts a milder temperature range, with a minimum of 3°C (38°F) and an average of 22°C (72°F). The maximum temperatures in December reach up to 26°C (79°F), significantly lower than October's peak of 34°C (93°F). Additionally, December has higher precipitation levels, recording 116 mm (4.6 in) over nine days compared to October's 74 mm (2.9 in) in the same number of days. Humidity also differs, being higher in December at 87% compared to October's 78%. For more insights into this month's climate, visit Port Royal weather in October.
December weather tends to be cooler than November, with December's average temperature at 12°C (54°F) compared to November's 15°C (59°F). The maximum temperatures in December peak at 26°C (79°F), slightly lower than November's high of 30°C (86°F). Additionally, December experiences more significant precipitation, with 116 mm (4.6 in) over 9 days, while November sees 83 mm (3.3 in) across 8 days. Humidity levels are quite similar, with December at 87% and November at 85%. For more details on November weather, you can visit Port Royal weather in November.
December in Port Royal presents a notable contrast to the milder months preceding it, as temperatures can dip quite significantly, bringing a chill not often felt earlier in the year. With average temperatures hovering around 12°C (54°F), and even reaching lows of -3°C (26°F), residents and visitors alike must prepare for a more refreshing atmosphere. The modest increase in precipitation, averaging 116 mm (4.6 in) over about 9 days, adds to the wintery feel, while the elevated humidity at 87% can make the cool air feel even brisker. For those planning a visit, understanding the nuances of December weather is essential—find more details on the seasonal patterns at Port Royal Climate.