Last updated: August 31, 2025
December in Fajardo, Puerto Rico offers a warm tropical ambiance characterized by an average temperature of 26°C (78°F). Expect daytime highs reaching up to 29°C (85°F), while the nights cool down to a comfortable 23°C (73°F). While the island enjoys plenty of warmth, it also experiences considerable precipitation, with 81 mm (3.2 in) falling over approximately 24 days, resulting in a humidity level of 76%. This blend of balmy temperatures and frequent rain creates a lush, vibrant environment ideal for exploring the natural beauty of the region.
In Fajardo, Puerto Rico, December ushers in a delightful climate, with temperatures that set a cozy tone for the holiday season. The month typically sees a minimum temperature of 23°C (73°F), perfect for evening strolls along the shore, while the average temperature hovers around 26°C (78°F), providing an inviting warmth for outdoor adventures. Daytime highs reach about 29°C (85°F), a lovely balance that allows both sun seekers and those preferring shade to revel in the quintessential tropical experience. As December wraps up the year, its temperatures remain comfortably warm, reflecting a gradual transition from all-out summer heat, and hinting at the cooler months ahead without losing the island vibe.
In Fajardo, Puerto Rico, December experiences a notable drop in precipitation, with 81 mm (3.2 in) recorded over 24 days of rain. This contrasts sharply with the heavier downpours seen in the preceding months, particularly September and October, which are characterized by significant rainfall—195 mm (7.7 in) and 187 mm (7.4 in), respectively. As the year winds down, December's relatively milder precipitation allows a balance of wet and dry days, making it an inviting time for visitors to enjoy the island’s lush landscapes without the consistent downpours typical of earlier months. The trend of decreasing rainfall from November's 131 mm (5.2 in) to December’s levels signals a gradual transition towards drier conditions, setting the stage for the drier months ahead.
In December, Fajardo, Puerto Rico experiences a humidity level of 76%, which reflects a notable consistency throughout the year. After peaking in the warmer months of July and August at 80%, humidity begins to taper off as the year progresses. From November to December, the figures remain relatively stable, with shifts of only a couple of percentage points. This trend of slightly decreasing humidity towards the year's end, compared to the steamy summer months, sets the stage for a more comfortable climate, making December a delightful time to enjoy the area's natural beauty. Overall, the relatively high humidity remains a hallmark of Fajardo's tropical charm.
In December, Fajardo, Puerto Rico experiences a UV Index of 8, classified as very high. This signals a slight decrease from the extreme levels seen in the peak months of March through August, where indices soared between 12 and 14, demanding a burn time of just 10 minutes. Interestingly, the UV Index remains consistent during winter months, such as January and November, when it reaches 9 and carries the same burn time of 15 minutes. As a trend emerges, it’s clear that while December offers some relief from the harshest rays, residents and visitors alike should still remain vigilant, protecting their skin from UVA and UVB exposure. For more detailed information, visit Fajardo UV Index.
UV Risk Categories
In December, Fajardo, Puerto Rico, enjoys a delightful 320 hours of sunshine, marking it as a significant month for those seeking warmth and light as the year draws to a close. The sunshine hours remain robust compared to previous months, reflecting a seasonal trend that peaks from May through July, where daylight hours hover over 350 hours. Interestingly, December's sunshine hours align closely with the prior months of November and October, showcasing a gradual decline as the winter solstice approaches. This consistency throughout the year captures the enchanting allure of Fajardo, making it an ideal destination for sun seekers yearning for some tropical cheer in the winter months.
In December, Fajardo, Puerto Rico, enjoys a 59% chance of sunny weather, marking a slight uptick from the previous month. This month stands out as a comfortable transitional period, nestled between the tail end of the rainy season and the onset of drier winter weather. As temperatures cool slightly from the humid summer months, residents and visitors alike can anticipate more clear days ahead, echoing the modestly sunny trends seen from November (57%) and consistently rising throughout early winter. Compared to the wetter summer months of June and July, where chances of sunshine plummet to 20% and 40% respectively, December offers a refreshingly higher likelihood of enjoying the radiant Caribbean sun in this picturesque coastal town.
In Fajardo, Puerto Rico, December marks a return to shorter days, with approximately 11 hours of daylight. Following the vibrant increase in sunlight from March through July, where residents and visitors enjoyed up to 13 hours of daylight, the trend shifts toward more darkness as the year comes to a close. As the month transitions into the new year, daylight remains consistent at 11 hours, mirroring the preceding months of January and February. This rhythmic ebb and flow of daylight throughout the year creates a captivating natural cycle, perfect for embracing the charm of the island during its cooler, sunnier months.
In December, Fajardo, Puerto Rico experiences a gentle breeze with an average wind speed of 4.4 m/s (10 mph), marking an uptick from the calmer months of October and November. This return to more breezy conditions aligns with the generally moderate wind patterns observed throughout the year, where the spring and summer months typically feature stronger winds peaking at 5.0 m/s (11 mph) in both June and July. As the year draws to a close, the winds reflect the transitional nature of the season, providing a refreshing contrast to the milder autumn breezes while still remaining inviting for outdoor pursuits. Overall, December's winds in Fajardo contribute to the island's vibrant atmosphere, blending the serenity of late autumn with the invigorating essence of the upcoming winter months.
Weather in Fajardo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Fajardo, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather tends to be slightly warmer, with temperatures ranging from a minimum of 23°C (73°F) to a maximum of 29°C (85°F), and an average of 26°C (78°F). The month experiences higher rainfall, with 81 mm (3.2 in) spread over 24 days, resulting in a humid environment at 76%. In contrast, January sees a slight decrease in temperature, with minimums dropping to 21°C (70°F) and maximums at 28°C (83°F), and an average of 25°C (77°F). Precipitation also decreases to 57 mm (2.3 in) across 17 days, while humidity remains stable at 76%. For more details, you can check out Fajardo weather in January.
When comparing the weather in December and February, December tends to be slightly warmer, with average temperatures ranging from 26°C (78°F) to a maximum of 29°C (85°F), while February's averages are a bit cooler, with temperatures ranging from 24°C (76°F) to a maximum of 27°C (81°F). Precipitation is heavier in December, totaling 81 mm (3.2 in) over 24 days, compared to February's 61 mm (2.4 in) over 21 days. Humidity levels are similar, with December at 76% and February slightly lower at 75%. For more details, you can check Fajardo weather in February.
In December, temperatures range from a minimum of 23°C (73°F) to a maximum of 29°C (85°F), with an average of 26°C (78°F). This month experiences a higher level of precipitation at 81 mm (3.2 in) spread over 24 days, along with a humidity level of 76%. In contrast, March sees slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 28°C (82°F), averaging 25°C (76°F). Precipitation in March is slightly lower at 78 mm (3.1 in) over 22 days, with humidity remaining fairly similar at 74%. For more detailed information about the weather in Fajardo during March, check out Fajardo weather in March.
In December, the weather is characterized by a minimum temperature of 23°C (73°F) and an average of 26°C (78°F), reaching a maximum of 29°C (85°F). The month experiences significant rainfall, with a total precipitation of 81 mm (3.2 in) spread over 24 days, contributing to a humidity level of 76%. In contrast, April sees slightly cooler temperatures with a minimum of 22°C (71°F) and an average of 25°C (77°F), while still peaking at 29°C (84°F). Precipitation in April is marginally lower at 79 mm (3.1 in) over 20 days, resulting in a slightly lower humidity of 75%. For more detailed information, check out Fajardo weather in April.
In comparing the weather between December and May, both months experience similar temperature ranges, with minimums around 23°C (73°F), averages at 26°C (78-79°F), and maximums peaking at 29°C (85°F). However, May tends to be slightly wetter, with a total precipitation of 109 mm (4.3 in) over 26 days compared to December’s 81 mm (3.2 in) across 24 days. The humidity levels are quite comparable, at 76% in December and slightly lower at 75% in May. For more detailed information on Fajardo weather during this month, visit Fajardo weather in May.
In December, the weather features a comfortable temperature range, with a minimum of 23°C (73°F) and a maximum of 29°C (85°F), averaging around 26°C (78°F). However, this month experiences significant rainfall, with 81 mm (3.2 in) of precipitation over 24 days and humidity levels at 76%. In contrast, June sees slightly warmer temperatures, with a minimum of 24°C (75°F) and a maximum of 30°C (87°F), averaging 27°C (80°F). Additionally, June is wetter, recording 110 mm (4.3 in) of precipitation over 26 days and maintaining a humidity level of 77%. For a deeper look at the weather specifics of June, you can visit Fajardo weather in June.
In December, the weather is generally warm with temperatures ranging from a minimum of 23°C (73°F) to a maximum of 29°C (85°F), and an average temperature of 26°C (78°F). The month experiences about 81 mm (3.2 in) of precipitation over 24 days, coupled with a humidity level of 76%. In contrast, July is slightly warmer with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 30°C (86°F), and an average temperature of 27°C (81°F). However, July is also wetter, with approximately 149 mm (5.9 in) of rainfall over 27 days and a humidity level of 80%. For more detailed insights, check out this link: Fajardo weather in July.
December and August present distinct weather patterns, with December featuring slightly cooler temperatures, averaging around 26°C (78°F), while August sees a warmer average of 27°C (82°F). In December, the minimum temperature is 23°C (73°F) and max reaches 29°C (85°F), compared to August's minimum of 24°C (76°F) and maximum of 30°C (87°F). Precipitation is more pronounced in August, with 153 mm (6.0 in) over 27 days, as opposed to December's 81 mm (3.2 in) across 24 days. Additionally, humidity levels are higher in August at 80%, whereas December's humidity averages at 76%. To learn more about the specifics of August weather, check out Fajardo weather in August.
When comparing the weather in December and September, we notice that both months experience warm temperatures; however, December tends to be slightly cooler. In December, the minimum temperature is 23°C (73°F), with an average of 26°C (78°F) and a maximum of 29°C (85°F). In contrast, September sees a minimum of 24°C (76°F) and can reach highs of 31°C (88°F), making it marginally hotter overall. Additionally, December is characterized by lower precipitation, with 81 mm (3.2 in) over 24 days, compared to September's 195 mm (7.7 in) over 28 days. Humidity levels are also similar, with December at 76% and September at 79%. For more specifics on September's weather conditions, you can refer to Fajardo weather in September.
In comparing December and October weather, December tends to be slightly cooler, with average temperatures ranging from a minimum of 23°C (73°F) to a maximum of 29°C (85°F). In contrast, October is a bit warmer, featuring minimum temperatures of 24°C (75°F) and maximum temperatures reaching 30°C (87°F). Both months experience considerable precipitation, but October sees a significantly higher amount at 187 mm (7.4 in) over 26 days, compared to December’s 81 mm (3.2 in) over 24 days. Additionally, humidity levels remain fairly consistent, with December at 76% and October at 78%. For more detailed information on October weather, you can explore Fajardo weather in October.
December weather closely resembles that of November, with both months featuring similar temperature ranges, where the minimum temperature hovers around 23°C (73°F), the average is 26°C (78°F), and the maximum reaches 29°C (85°F). However, December sees a slight decrease in precipitation, recording 81 mm (3.2 in) over 24 days compared to November's 131 mm (5.2 in) across 25 days. The humidity also experiences a modest decline, registering at 76% in December compared to November’s 78%. For more details on November weather, you can visit Fajardo weather in November.
As December rolls into Fajardo, the weather takes on a distinctive character, marked by mild temperatures and slightly increased humidity compared to the preceding months. While the temperatures remain pleasant, with averages hovering around the mid-20s°C, the notable increase in rainfall—spreading over approximately three weeks—can dampen some outdoor plans. Nevertheless, the warm tropical environment that defines this coastal paradise persists, making it an appealing destination for those looking to escape colder winter climates. For a deeper dive into the seasonal patterns of this vibrant region, be sure to check out the detailed insights at Fajardo Climate.