Last updated: August 21, 2025
In December, Tamuning-Tumon-Harmon Village experiences a tropical climate characterized by mild temperatures and high humidity. Daily highs reach a pleasant 29°C (84°F), with an average of 27°C (82°F) and night temperatures hovering around 26°C (78°F). Adventurous visitors may need to prepare for frequent rainfall, as the area sees about 105 mm (4.1 in) of precipitation spread across 22 days. With humidity levels at an average of 84%, December in Guam offers a warm, lush environment perfect for exploration and relaxation amidst the island's stunning landscapes.
In December, the Tamuning-Tumon-Harmon Village area of Guam offers a delightful respite from colder months elsewhere, with temperatures remaining warm and inviting. The month sees a minimum temperature of around 26°C (78°F), creating a cozy atmosphere perfect for holiday festivities. The average temperature hovers at a comfortable 27°C (82°F), while daytime highs can reach up to 29°C (84°F), making it an ideal time for beach outings and outdoor activities. This slight dip in temperature compared to November hints at the region's steady warm climate, ensuring that visitors can relish in the tropical charm of Guam while enjoying the seasonal joys of December.
In Tamuning-Tumon-Harmon Village, Guam, December marks a transition into slightly drier weather, accumulating around 105 mm (4.1 in) of precipitation over 22 days. This is a noticeable decrease compared to the heavy rains of earlier months, especially August and September, which often surpass 400 mm. Such patterns illustrate a climactic shift as the year wraps up, with December's rainfall being less abundant than the preceding months, but still significant enough to maintain the lush, vibrant landscapes typical of Guam. The consistent precipitation throughout the year highlights the island's tropical climate, where even in December, the atmosphere remains rich and humid, preparing for the coming months.
December in Tamuning-Tumon-Harmon Village, Guam, ushers in a notable increase in humidity, soaring to 84%. This rise reflects a consistent trend observed throughout the year, where the humidity levels remain high, typically hovering between 80% and 84% from April through December. Interestingly, while the winter month of December maintains this elevated humidity, it also marks a slight uptick compared to the preceding months, particularly the 80% levels recorded in late summer. This seasonal fluctuation suggests that as the year closes, the air becomes more saturated, contributing to the lush, tropical feel of Guam’s environment. Whether you're preparing for outdoor activities or simply enjoying the local flora, December's humidity plays a significant role in shaping the island's unique climate.
In December, the UV Index in Tamuning-Tumon-Harmon Village, Guam stands at 11, categorizing it as extreme with a burn time of just 10 minutes. This reflects a slight dip from the peak indices observed earlier in the year, particularly in March and September, where the UV Index reached 15. Throughout the year, the region consistently faces high UV levels, ranging between 11 and 15, emphasizing the need for year-round sun protection. As you plan your outdoor activities, consider the unyielding strength of the sun in this tropical paradise. For more details on UV exposure levels, check out Tamuning-Tumon-Harmon Village UV Index.
UV Risk Categories
In Tamuning-Tumon-Harmon Village, Guam, December offers a delightful transition towards the new year with an impressive 286 hours of sunshine. This month reflects a gradual decline from the sunniest days of May, which boasts a peak of 336 hours. As the year winds down, sunlight remains generous, following a consistent trend that shows a stable amount of bright days even in the cooler months. While spring and early summer bask in the most radiant sunshine, December still presents plenty of opportunities to soak up the sun before we welcome January's more moderate 232 hours. Overall, the consistent light throughout the year underscores Guam's allure as a tropical paradise, where sunshine is a cherished companion, even in winter.
In Tamuning-Tumon-Harmon Village, Guam, December brings a 35% chance of sunny weather, a slight dip compared to the 50% chance seen in November. This trend reflects a broader seasonal pattern in which the region experiences its highest likelihood of sun in the earlier months, peaking in March at 63%, before gradually declining towards the end of the year. Notably, the summer months witness an astonishing drop, with July and August plunging to as low as 5%, underscoring the island's tendency for increased rainfall. As residents and visitors prepare for December, it's important to embrace the possibility of both sun and clouds as the year winds down.
In Tamuning-Tumon-Harmon Village, Guam, the daylight duration exhibits a rhythmic pattern throughout the year. Starting with 11 hours in January and February, the days gradually lengthen to a peak of 12 hours from March to September, offering ample time to enjoy the island's natural beauty. As autumn approaches, daylight begins its slow decline, returning to 11 hours in October and November, before stabilizing once again in December. This consistency not only highlights the tropical climate but also provides residents and visitors with a dependable schedule for outdoor activities and adventures year-round.
As December arrives in Tamuning-Tumon-Harmon Village, Guam, the average wind speed picks up to 8.0 m/s (18 mph), mirroring January’s brisk conditions. This notable increase signals a transition from the more subdued breezes of the mid-year months, which saw averages dipping as low as 4.7 m/s (10 mph) in June. The winds begin to gain momentum again in late fall, as November wraps up with 7.2 m/s (16 mph), hinting at the climatic patterns typical of this tropical paradise. With December's revitalizing gusts, locals and visitors alike can enjoy the invigorating sea air, making it a perfect time for outdoor activities and celebrations against the backdrop of stunning island vistas.
Weather in Tamuning-Tumon-Harmon Village varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Tamuning-Tumon-Harmon Village, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather patterns of December and January, December typically experiences slightly warmer temperatures, with a minimum of 26°C (78°F) and a maximum of 29°C (84°F), averaging around 27°C (82°F). This month also sees higher precipitation, totaling 105 mm (4.1 in) over 22 days, accompanied by a humidity level of 84%. In contrast, January offers a marginally cooler climate, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 28°C (83°F), and an average temperature of 27°C (81°F). Precipitation reduces notably to 61 mm (2.4 in) across 15 days, and humidity dips slightly to 83%. For more detailed information on January weather specifically, you can visit Tamuning-Tumon-Harmon Village weather in January.
December and February display similar warm temperatures, with both months averaging around 27°C (approximately 81°F). However, December is slightly warmer, with maximum temperatures reaching 29°C (84°F) compared to February's peak of 28°C (83°F). Precipitation levels also differ, as December experiences 105 mm (4.1 in) of rain over 22 days, while February sees a decrease to 77 mm (3.0 in) across 15 days. Additionally, humidity remains high in both months, with December at 84% and February slightly lower at 82%. For more detailed insights, you can check this link: Tamuning-Tumon-Harmon Village weather in February.
In December, temperatures are slightly warmer overall, with minimums of 26°C (78°F) and maximums reaching up to 29°C (84°F), while March sees a minor drop in max temperature to 28°C (83°F). Both months maintain an average temperature of 27°C (81°F), but December experiences significantly higher precipitation at 105 mm (4.1 in) over 22 days, compared to March's 53 mm (2.1 in) across only 15 days. Humidity remains consistent at 84% for both months. For more detailed information, you can check Tamuning-Tumon-Harmon Village weather in March.
In December, the weather tends to be quite similar to April, with both months experiencing an average temperature of around 27°C (81°F). However, December typically sees slightly higher overall precipitation levels at 105 mm (4.1 in) over 22 rainy days compared to April's 94 mm (3.7 in) spread across 18 days. Humidity remains fairly consistent in both months at 84%. As a result, while both months deliver comparable warmth, December's increased rainfall may create a more humid and wet atmosphere than the relatively drier April. For a detailed overview of April weather, visit Tamuning-Tumon-Harmon Village weather in April.
In December, the weather tends to be slightly cooler with temperatures ranging from a minimum of 26°C (78°F) to a maximum of 29°C (84°F), resulting in an average of 27°C (82°F). Additionally, December experiences more precipitation, totaling 105 mm (4.1 in) over 22 days, with humidity levels remaining high at 84%. In contrast, May offers a comparable temperature range, with a minimum of 25°C (78°F) and an average of 28°C (82°F), but less rainfall at 78 mm (3.1 in) also spread over 22 days, and a humidity level of 83%. For more detailed insights, you can check the weather specifics for the month of May here: Tamuning-Tumon-Harmon Village weather in May.
In comparing the weather between December and June, we see some notable similarities and differences. Both months exhibit warm temperatures, with December's daily averages ranging from a minimum of 26°C (78°F) to a maximum of 29°C (84°F), while June maintains a slightly lower minimum of 25°C (78°F) but matches December's maximum. Humidity levels are relatively high in both months, with December at 84% and June slightly lower at 80%. However, June tends to be wetter, receiving an average of 159 mm (6.3 in) of precipitation over 23 days, compared to December's 105 mm (4.1 in) over 22 days. For more detailed information, you can find Tamuning-Tumon-Harmon Village weather in June.
In December, the weather features warm temperatures with a minimum of 26°C (78°F) and an average of 27°C (82°F), peaking at a maximum of 29°C (84°F). The month is characterized by relatively high humidity at 84% and experiences 105 mm (4.1 in) of precipitation over 22 days. In contrast, July maintains similar temperature ranges, with a minimum of 26°C (78°F), an average of 28°C (82°F), and a maximum of 29°C (85°F). However, July is significantly wetter, recording 276 mm (10.9 in) of rainfall spread across 30 days, while humidity drops slightly to 80%. For more detailed weather information, check out this link: Tamuning-Tumon-Harmon Village weather in July.
The weather in December and August exhibits some notable differences, particularly in terms of precipitation and overall conditions. December enjoys slightly warmer temperatures, with averages around 27°C (82°F) and maximums reaching 29°C (84°F). However, it also experiences higher humidity levels at 84% and 105 mm (4.1 in) of rainfall spread over 22 days. In contrast, August, while having similar maximum temperatures at 29°C (85°F), sees a lower minimum temperature of 25°C (78°F) and significantly higher precipitation, totaling 405 mm (16.0 in) across 30 days. The humidity in August stands at 80%, making it slightly less oppressive than December despite the increased rainfall. For detailed weather patterns, you can refer to Tamuning-Tumon-Harmon Village weather in August.
In comparing the weather of December and September, December generally offers slightly cooler temperatures, with average highs around 29°C (84°F) compared to September's maximum of 30°C (86°F). Both months experience high humidity, with December at 84% and September a bit lower at 81%. However, September sees significantly more rainfall, with a total of 375 mm (14.8 in) over 28 days, whereas December has only 105 mm (4.1 in) spread across 22 days. This makes December a drier month, potentially more pleasant for outdoor activities. For more detailed information, you can check the Tamuning-Tumon-Harmon Village weather in September.
In comparing the weather of December and October, we observe that December features a slightly cooler temperature range, with minimums of 26°C (78°F) and maximums of 29°C (84°F), while October maintains a minimum of 25°C (78°F) and a maximum of 29°C (85°F). Although both months showcase similar average temperatures around 27°C (82°F), October experiences significantly more rainfall, totaling 356 mm (14.0 in) over 29 days compared to December's 105 mm (4.1 in) over 22 days. Additionally, December has higher humidity at 84%, compared to October's 80%. For more details, you can check Tamuning-Tumon-Harmon Village weather in October.
In December, the weather remains relatively warm, with temperatures ranging from a minimum of 26°C (78°F) to a maximum of 29°C (84°F), similar to November's temperatures, which also range from 26°C (79°F) to 29°C (85°F). However, December experiences less rainfall, with a total precipitation of 105 mm (4.1 in) over 22 days, compared to November's more substantial 202 mm (8.0 in) over 26 days. Humidity levels in December are slightly higher at 84%, compared to 81% in November. For more details on November's weather, you can check the following link: Tamuning-Tumon-Harmon Village weather in November.
As December rolls into Tamuning-Tumon-Harmon Village, the weather shifts to a unique blend of warmth and humidity that distinguishes it from other months. With average temperatures comfortably hovering around 27°C, this month offers a delightful reprieve, though it’s accompanied by increased humidity and frequent rain, with precipitation occurring on about 22 days. The lush green landscapes thrive under these damp conditions, creating a vibrant backdrop for holiday festivities. If you're interested in understanding how December weather compares to the rest of the year, check out the detailed insights at Tamuning-Tumon-Harmon Village Climate.