Last updated: August 31, 2025
In January, Carolina, Puerto Rico, welcomes visitors with mild temperatures that range from a comfortable 21°C (69°F) at night to a maximum of 29°C (85°F) during the day, creating an ideal climate for outdoor activities. The average temperature hovers around 25°C (77°F), ensuring pleasant conditions. However, travelers should be prepared for some rain, as precipitation totals 38 mm (1.5 in) over approximately 12 days of the month, contributing to a humidity level of 76%. Embrace the tropical allure of this vibrant destination while enjoying its warm temperatures and brief, refreshing showers.
In January, Carolina, Puerto Rico enjoys delightful tropical temperatures, with a minimum of 21°C (69°F) and a comfortable average of 25°C (77°F), peaking at 29°C (85°F). This month marks the beginning of a gradual warming trend as the year progresses; temperatures steadily rise by just a degree or two in February and March, leading to an invigorating spring. By April, the mercury begins to flirt with the 30°C mark, nudging towards the summer warmth that characterizes the later months. As the year unfolds, the temperatures continue to warm up, revealing a consistent pattern of balmy days and mild nights. Overall, January serves as a charming gateway into the pleasantly warm climate that defines Caribbean life, offering a perfect escape from colder northern winters.
In January, Carolina, Puerto Rico experiences a modest precipitation total of 38 mm (1.5 in) over approximately 12 days of rainfall, marking the start of the year with relatively light showers. This trend of gradual increase in precipitation continues into the following months, with February and March seeing slight rises to 43 mm (1.7 in) and 67 mm (2.6 in), respectively. As spring unfolds into summer, rainfall surges, peaking dramatically in September with a striking 173 mm (6.8 in) over 23 days, highlighting the region’s transition into its wetter months. The gradual buildup of rain hints at the vibrant ecological cycles that define the island, where the dry beginnings of the year give way to lush, saturated landscapes by mid-year. This rhythm of precipitation showcases the dynamic climate patterns that are characteristic of Carolina's weather, reflecting a balance between dry and wet seasons that supports its rich natural habitats.
In January, Carolina, Puerto Rico, experiences a pleasant humidity level of 76% that sets the tone for the month. This relatively stable humidity is mirrored in February with a slight dip to 75%. As spring approaches, the humidity remains consistent through March and April, hovering around 74% to 75%. The pattern begins to shift in June, when humidity levels rise to 77%, reflecting the onset of summer. The peak humidity arrives in the heart of summer, with July and August recording 80%. As the year winds down, humidity levels begin to gradually decrease, settling back to 76% by December. This annual cycle showcases a steady humidity trend that contributes to Carolina’s tropical climate, making it a unique and vibrant destination throughout the year.
In January, Carolina, Puerto Rico, experiences a UV Index of 9, categorized as very high, with a burn time of just 15 minutes. This marks the beginning of a trend where UV levels steadily climb through the year, peaking in May at an extreme Index of 14. Notably, from February through June, the index remains at extreme levels, with a minimal burn time of 10 minutes, urging residents and visitors to take sun protection seriously. As summer approaches, the index slightly dips but stays predominantly high, highlighting the need for vigilance against UV exposure year-round. To plan your sun safety effectively, you can find more details at Carolina UV Index.
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In Carolina, Puerto Rico, January marks the beginning of a radiant year, offering 257 hours of sunshine that sets the stage for an impressive upward trend in daylight. As the year progresses into February, sunshine blooms with 303 hours, continuing its ascent to a peak of 356 hours in May. The summer months maintain this brilliance, with June and July basking in 343 and 353 hours respectively. Even as the year transitions into autumn, the sunshine remains abundant, averaging over 300 hours until November before settling at 319 hours in December. This consistent availability of sunshine not only highlights Carolina's vibrant climate but also paints a picture of a locale where the warmth and light linger throughout the year, beckoning visitors to soak in its beauty.
In January, Carolina, Puerto Rico experiences a moderate 51% chance of sunny weather, setting the stage for both warmth and occasional cloudiness. As the year unfolds, the likelihood of sunshine significantly increases, peaking at a striking 70% in February before gently tapering to 64% in March and 56% in May. The trend of sunny days shows a notable decline during the summer months, particularly in June with only a 24% chance of sun, before gradually recovering as fall approaches. This pattern highlights January as a solid month for sunshine seekers, offering a pleasant balance before the more consistently sunny weeks that follow.
In Carolina, Puerto Rico, January marks the beginning of a stable daylight rhythm, featuring 11 hours of daylight that continues into February. As spring approaches, daylight begins to lengthen in March, peaking at 12 hours throughout the following three months. This trend continues into the summer months of June and July, where residents enjoy the longest days of the year with an impressive 13 hours of sunlight. As August rolls in, a gradual decline in daylight begins, shifting back to 12 hours in September before tapering off to 11 hours again from October to December. This cyclical pattern highlights Puerto Rico's tropical climate, offering consistent daylight variations that are both predictable and enjoyable year-round.
In January, the winds in Carolina, Puerto Rico, gently whisper at an average speed of 4.1 m/s (9 mph), setting a tranquil tone for the month. As the year progresses into February, the breezes pick up slightly, reaching 5.2 m/s (12 mph), hinting at a shift toward more invigorating gusts. However, by March, the winds calm to 4.5 m/s (10 mph), before dipping again in April to a modest 3.8 m/s (9 mph). As late spring approaches, the winds revive, reaching 4.9 m/s (11 mph) in June and peaking at 5.3 m/s (12 mph) in July, creating a vibrant atmosphere just in time for summer. Following this, the wind speed stabilizes around 4.6 m/s (10 mph) in August, before declining into the fall months. By September, the winds soften to a gentle 3.2 m/s (7 mph), continuing to ease through October and November. With December, the winds regain some strength at 4.4 m/s (10 mph), wrapping up the year with a refreshing note, while subtle fluctuations throughout the months reveal a rhythmic dance of breezes that beautifully characterize life in this enchanting locale.
Weather in Carolina varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Carolina, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison, January and February weather conditions remain quite similar, with both months exhibiting a minimum temperature of 21°C (69°F), an average of 25°C (77°F), and a maximum of 29°C (85°F). However, February experiences slightly higher precipitation, with 43 mm (1.7 in) compared to January's 38 mm (1.5 in), as well as the same number of rainy days at 12. Humidity levels are also comparable, with January at 76% and February at 75%. For a detailed look at what to expect, check out Carolina weather in February.
In January, temperatures range from a minimum of 21°C (69°F) to a maximum of 29°C (85°F), maintaining an average of 25°C (77°F). The month sees about 38 mm (1.5 in) of precipitation over 12 days, along with a humidity level of 76%. In contrast, March experiences similar minimum temperatures at 21°C (71°F) and an average of 25°C (77°F), but it slightly warms up to a maximum of 30°C (86°F). Precipitation increases to 67 mm (2.6 in) over 14 days, and humidity remains relatively stable at 74%. For those interested in more details about March weather, visit Carolina weather in March.
In comparing the weather patterns of January and April, January tends to be slightly cooler with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 29°C (85°F). The month sees about 38 mm (1.5 in) of precipitation over 12 days, accompanied by a humidity level of 76%. In contrast, April brings warmer conditions, with average temperatures between 22°C (71°F) and 31°C (88°F). Precipitation increases to 56 mm (2.2 in) but occurs over just 10 days, maintaining a similar humidity level of 75%. For more details about weather specific to this month, you can visit Carolina weather in April.
In comparing the weather between January and May, we find some notable differences. January experiences slightly cooler temperatures, with minimums around 21°C (69°F) and maximums reaching 29°C (85°F), while May features warmer conditions, with minimums at 23°C (73°F) and maximums soaring to 32°C (90°F). Precipitation is more prominent in May, totaling 64 mm (2.5 in) over 13 days compared to January's 38 mm (1.5 in) over 12 days. Despite the increase in rainfall, humidity remains relatively consistent, with January at 76% and May slightly lower at 75%. For more detailed information, you can visit Carolina weather in May.
In January, the weather is generally warm with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 29°C (85°F). The month experiences around 38 mm (1.5 in) of precipitation over approximately 12 days, accompanied by a humidity level of 76%.
By June, temperatures are slightly warmer, with a minimum of 24°C (75°F) and a maximum reaching 32°C (90°F). This month also sees increased precipitation, totaling 68 mm (2.7 in) over about 15 days, while humidity remains relatively stable at 77%.
For a more detailed overview of the conditions during this month, you can check Carolina weather in June.
The weather in January and July showcases noticeable differences in both temperature and precipitation patterns. January typically experiences milder temperatures, with an average temperature of 25°C (77°F), while July is warmer, averaging 28°C (82°F). Additionally, July sees more substantial rainfall, with 87 mm (3.4 in) of precipitation over 18 days compared to January's 38 mm (1.5 in) over 12 days. Humidity levels are slightly higher in July at 80%, compared to January's 76%. For more details on July weather, check out Carolina weather in July.
In January, the weather in Carolina is warm and pleasant, with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 29°C (85°F). The month experiences approximately 38 mm (1.5 in) of precipitation over about 12 days, with humidity levels around 76%. In contrast, August sees a slight increase in temperatures, with averages between 24°C (76°F) and 32°C (90°F), and a significant rise in precipitation, totaling 99 mm (3.9 in) across 18 days. The humidity also climbs slightly to 80% in August, making it feel more tropical. For more details about the climate during this month, you can check Carolina weather in August.
In January, the weather in Carolina tends to be warm but relatively mild, with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 29°C (85°F). The month sees around 38 mm (1.5 in) of precipitation over 12 days, and humidity levels are at 76%. In contrast, September experiences higher temperatures, with a minimum of 24°C (76°F) and a maximum of 32°C (90°F), along with significantly increased rainfall of 173 mm (6.8 in) over 23 days. The humidity also rises slightly to 79%, creating a more tropical feel. For more detailed insights, you can check Carolina weather in September.
In January, the weather is characterized by warm temperatures averaging 25°C (77°F), with daytime highs reaching up to 29°C (85°F), and relatively low precipitation of 38 mm (1.5 in) over about 12 days. Humidity is moderately high at 76%. In contrast, October sees slightly warmer conditions, with an average temperature of 27°C (81°F) and maximum highs climbing to 32°C (89°F). However, October also experiences significantly higher rainfall, totaling 145 mm (5.7 in) over 22 days, paired with a slightly elevated humidity of 78%. This contrast highlights the shift from milder, drier January weather to the warmer, wetter conditions typical of October. For more detailed insights into the October climate, you can explore Carolina weather in October.
In January, the weather is typically warm, with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 29°C (85°F) and an average of 25°C (77°F). This month sees around 38 mm (1.5 in) of precipitation over 12 days, with humidity levels averaging 76%. In contrast, November experiences slightly warmer temperatures, with a minimum of 23°C (74°F) and a maximum of 31°C (87°F), averaging 26°C (80°F). However, November is also wetter, receiving about 106 mm (4.2 in) of rain over 16 days, accompanied by a humidity level of 78%. For more details, you can visit Carolina weather in November.
In comparing the weather between January and December, January experiences slightly cooler temperatures, with a minimum of 21°C (69°F) compared to December's minimum of 23°C (73°F). The average temperature in January is 25°C (77°F), which is just below December's average of 26°C (78°F). Additionally, January sees fewer maximum temperature extremes, peaking at 29°C (85°F) versus December's 31°C (87°F). Precipitation is also notably different, with January receiving 38 mm (1.5 in) over 12 days, while December has more rainfall, totaling 51 mm (2.0 in) across 16 days. Interestingly, humidity remains consistent at 76% for both months. For more insights on December weather, you can explore Carolina weather in December.
January in Carolina presents a delightful contrast to other months, characterized by pleasantly warm temperatures and a moderate level of humidity. While the warmth consistently lingers, January's conditions are cooler and less humid compared to the sweltering summer months, making it an ideal time for both locals and visitors to enjoy outdoor activities. This month also sees a bit more precipitation, though it's typically mild, allowing the vibrant scenery of Carolina to thrive. For a comprehensive insight into how January weather fits into the broader climate patterns, check out Carolina Climate.