Last updated: August 31, 2025
December in Mayagüez, Puerto Rico offers a delightful tropical experience, characterized by an average temperature of 26°C (79°F). Visitors can expect maximum daytime temperatures reaching 29°C (84°F), while nighttime brings a mild minimum of 23°C (74°F). The month sees brief rain showers, with a total precipitation of 19 mm (0.8 in) distributed over approximately 4 days, contributing to the region's lush greenery. With a humidity level hovering around 76%, the air feels pleasantly warm, making December an ideal time for exploring this vibrant coastal city.
In Mayagueez, Puerto Rico, December brings a welcoming shift towards cooler temperatures, making it an appealing time for visitors. With minimums around 23°C (74°F) and maximums peaking at 29°C (84°F), the month offers a comfortable average of 26°C (79°F). This slight dip from the warmer months exemplifies the region’s mild tropical climate, where temperatures maintain a pleasant balance. As December approaches, residents and travelers alike enjoy the refreshing breezes and delightful sunshine, ideal for outdoor activities and festive celebrations. The gradual transition from the hotter summer months culminates in a charming winter experience, ensuring that Mayagueez remains a year-round destination for warmth and relaxation.
December in Mayagueez, Puerto Rico, wraps up the year with a modest precipitation total of 19 mm (0.8 in), marking it as one of the drier months. With just 4 rainfall days, December sees significantly less rainfall compared to the more torrential months preceding it, like September and July, which often bring heavier downpours. As the year transitions into winter, the precipitation trend highlights a noticeable decline, moving from an average of more than 60 mm in the summer months down to the lower teen figures of December. This pattern underscores the seasonal variation in Mayagueez, where the holiday season often arrives with sunnier skies, providing a brief reprieve before the rains return with the new year.
In Mayagueez, Puerto Rico, December experiences a humidity level of 76%, which is consistent with the overall trend seen throughout the year. Starting at a high of 76% in January, humidity slightly declines to 75% in February, followed by a modest drop to 74% in March. As spring approaches, humidity rises again, stabilizing at around 75% from April to May. The summer months bring a noticeable increase, peaking at 80% in July and August before gradually tapering off to 78% in October and November. This cyclical pattern reveals a humid climate that, while elevated in the summer, returns to a more moderate level by December, providing a comforting balance for residents and visitors alike.
In Mayagueez, Puerto Rico, the UV Index trends throughout the year reveal a pattern of intense sun exposure, particularly from February to June. Notably, the UV Index peaks at 14 in May, categorizing it as extreme, which signals the need for heightened precautions as burn time drops to just 10 minutes. This extreme exposure persists through the summer months, where the Index remains consistently high at 13, before gradually tapering off in the fall and winter to a very high category in November and December, with an Index of 9 and 8, respectively. With such significant UV levels year-round, it's essential to stay informed and take protective measures. For more detailed information on the UV Index, visit Mayagueez UV Index.
UV Risk Categories
As December rolls in, Mayagueez, Puerto Rico, continues to bask in a generous embrace of sunshine, with an impressive 320 hours of sunlight, making it one of the brighter months of the year. Following a steady upward trend, the sunlit hours have consistently increased from the beginning of the year, peaking in May with 361 hours before maintaining that sunny disposition throughout the summer. Even as the year draws to a close, December offers more light than the previous months, with only November trailing behind. The overall pattern reveals a vibrant climate that swells with sunny days, inviting locals and visitors alike to relish in the warmth and beauty of this tropical paradise.
In December, Mayagüez, Puerto Rico, enjoys a promising likelihood of sunny weather, boasting a 72% chance of sun. This figure reflects a noticeable trend where the winter months, particularly from November to March, tend to offer better sunshine compared to the summer and early fall, with February standing out at an impressive 80%. As the year progresses towards the end, December strikes a favorable balance, making it one of the brighter months, right after the typically overcast periods of June and July. With such a predisposition for sunny days, visitors to Mayagüez in December can look forward to outdoor activities under beautiful, sunlit skies.
In Mayagueez, Puerto Rico, daylight duration exhibits a rhythmic pattern throughout the year, showcasing the region's tropical climate. Starting the year with 11 hours of daylight in both January and February, the days gradually lengthen as spring approaches, reaching 12 hours by March and maintaining this duration through April and May. The longest days occur in June and July, where sunlight stretches to 13 hours, inviting outdoor activities and vibrant sunsets. As summer wanes, daylight begins to gently recede, tapering back to 12 hours in August and September, before settling into 11 hours again by October through December. This pattern of fluctuating daylight not only highlights the seasonal transitions but also underscores the consistent warmth and vitality that define life in this picturesque coastal town.
As the year winds down in Mayagüez, Puerto Rico, December greets residents with an invigorating increase in average wind speed, reaching 4.7 m/s (11 mph). This brisk departure from the softer breezes of previous months signifies a shift towards more dynamic weather patterns. In contrast to the calmer air of April and May, which both hovered around 3.5-3.6 m/s (8 mph), December’s winds are a welcome reminder of the island's diverse climatic rhythms. The trends showcase a gradual escalation in wind speeds from the year’s start, peaking just as the calendar year comes to a close, making December a month where the gentle embrace of island warmth meets the lively caress of the winter winds.
Weather in Mayagueez varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mayagueez, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures in Mayaguez typically range from a minimum of 23°C (74°F) to a maximum of 29°C (84°F), with an average of 26°C (79°F). The month sees about 19 mm (0.8 in) of precipitation over four days, maintaining a humidity level of 76%. By January, the weather remains quite similar, with minimum temperatures also at 23°C (73°F) but an average that drops slightly to 25°C (78°F) and a maximum of 28°C (84°F). Precipitation decreases a bit to 16 mm (0.6 in) over four days, while humidity remains unchanged at 76%. For more detailed information, you can check Mayagueez weather in January.
In December, the weather is warm with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 29°C (84°F), and an average temperature of 26°C (79°F). The month experiences about 19 mm (0.8 in) of precipitation over four days, accompanied by a humidity level of 76%. In contrast, February features slightly cooler temperatures, with a minimum of 22°C (72°F), an average of 25°C (77°F), and a maximum of 28°C (83°F). Precipitation increases slightly to 21 mm (0.8 in) but is spread over seven days, resulting in marginally lower humidity at 75%. Overall, both months share tropical warmth; however, February tends to have a bit more rainfall and more days of precipitation. For a more detailed view of February weather patterns, you can access Mayagueez weather in February.
In comparing the weather of December and March, both months exhibit warm temperatures, with December generally offering slightly higher averages. In December, temperatures range from a minimum of 23°C (74°F) to a maximum of 29°C (84°F), while March sees a slightly cooler range of 22°C (73°F) to 28°C (83°F). Precipitation also varies significantly; December records 19 mm (0.8 in) over just 4 days, while March doubles that amount with 38 mm (1.5 in) across 11 days, indicating a wetter climate during that month. Additionally, humidity levels remain fairly high in both months, with December at 76% and March slightly lower at 74%. For more detailed insights into March weather, you can visit Mayagueez weather in March.
In comparing the weather of December and April, both months exhibit quite similar temperature ranges, with minimum temperatures consistently around 23°C (74°F) and average maximums reaching up to 29°C (84°F). However, April sees a notable increase in precipitation, averaging 39 mm (1.5 in) over 12 days, while December has a milder 19 mm (0.8 in) spread across just 4 days. Humidity levels remain relatively stable, with December at 76% and April slightly lower at 75%. For a more detailed look at April's weather patterns, you can visit Mayagueez weather in April.
In comparing the weather conditions between December and May, both months have similar average temperatures, hovering around 26°C (79°F). However, December features slightly cooler temperatures with minimums around 23°C (74°F) and maximums at 29°C (84°F), while May starts a bit warmer, with lows of 24°C (75°F) and highs reaching 29°C (85°F). Precipitation levels are notably different; May experiences significantly more rain, with 49 mm (1.9 in) falling over 14 days, compared to December's lighter 19 mm (0.8 in) across just 4 days. Humidity remains relatively high in both months, with December at 76% and May slightly lower at 75%. For more detailed insights, you can check Mayagueez weather in May.
When comparing the weather in December and June, it’s clear that both months offer warm temperatures, but with some notable differences. In December, average temperatures range from a minimum of 23°C (74°F) to a maximum of 29°C (84°F), accompanied by relatively low precipitation of 19 mm over just 4 days. In contrast, June sees slightly higher temperatures, with averages fluctuating between a minimum of 24°C (76°F) and a maximum of 30°C (87°F). However, this month experiences significantly more rainfall, totaling 48 mm over 14 days, along with a slightly higher humidity at 77%. For more detailed information on June's weather in Mayagueez, you can check Mayagueez weather in June.
In December, the weather is generally milder with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 29°C (84°F), while average temperatures hover around 26°C (79°F). This month sees relatively low precipitation levels, with only 19 mm (0.8 in) over about 4 days, paired with a humidity level of 76%. In contrast, July experiences warmer temperatures, with minimums of 25°C (78°F), averages of 28°C (82°F), and maximums reaching up to 31°C (88°F). However, July is also characterized by significantly higher rainfall, totaling 69 mm (2.7 in) spread over 15 days, and a slightly elevated humidity of 80%. For more detailed information, you can check Mayagueez weather in July.
In December, the weather is pleasantly warm, with temperatures ranging from a minimum of 23°C (74°F) to a maximum of 29°C (84°F) and an average of 26°C (79°F). The month experiences relatively low precipitation, totaling 19 mm (0.8 in) over just 4 days, and humidity sits around 76%. In contrast, August is hotter, with temperatures ranging from 25°C (77°F) to 31°C (88°F), averaging 28°C (82°F). However, it also sees significantly more precipitation, with 64 mm (2.5 in) spread over 15 days, and humidity increases slightly to 80%. For more detailed information, check Mayagueez weather in August.
When comparing the weather in December and September, December sees slightly cooler temperatures, with lows around 23°C (74°F) and highs reaching 29°C (84°F), while September boasts warmer conditions, with minimum temperatures of 25°C (78°F) and maximums of 31°C (87°F). Additionally, December experiences significantly less rainfall at 19 mm (0.8 in) over just 4 days, contrasted with September's much wetter climate, which brings 141 mm (5.5 in) of precipitation over 18 days. Humidity levels remain similar, with December at 76% and September slightly higher at 79%. For more details on the weather in September, check Mayagueez weather in September.
In December, the weather is slightly cooler compared to October, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 29°C (84°F). In contrast, October experiences warmer conditions, with temperatures reaching a minimum of 25°C (77°F) and a maximum of 31°C (88°F). Additionally, December sees much less rainfall, averaging only 19 mm (0.8 in) over about 4 days, while October is noticeably wetter, receiving 71 mm (2.8 in) of precipitation across 14 days. Humidity levels are comparable, with December at 76% and October at 78%. For more detailed insights, you can check Mayagueez weather in October.
In comparing the weather of December and November, December experiences slightly lower temperatures, with a minimum of 23°C (74°F) and an average of 26°C (79°F), compared to November's minimum of 24°C (76°F) and an average of 27°C (80°F). Additionally, while December has a maximum temperature of 29°C (84°F), November tops out at 30°C (86°F). Precipitation in December is significantly less, with only 19 mm (0.8 in) over 4 days, in stark contrast to November's 66 mm (2.6 in) over 13 days. Humidity levels are relatively similar, with December at 76% and November at 78%. For a more detailed look at November weather specifically, you can check Mayagueez weather in November.
As December rolls into Mayaguez, the weather showcases a delightful shift, presenting a pleasant blend of warmth and mild humidity. With average temperatures hovering around 26°C (79°F), this month stands out from the sweltering heat of summer, inviting visitors to enjoy its comfortable climate. The month sees a modest amount of precipitation, typically falling on just a few days, which is a welcome change from the rainier seasons. For those looking to experience a seasonal transition with lower humidity and fewer rains, December offers a unique charm in Mayaguez's annual climate. To learn more about the seasonal variations, check out Mayagueez Climate.