Last updated: January 18, 2025
Asan, Guam, classified under the Koppen-Geiger climate classification as Af, experiences a tropical rainforest climate characterized by consistently warm temperatures throughout the year. The minimum temperature hovers around 25°C (77°F) in March, while the average temperature rests at a comfortable 27°C (82°F). September marks the peak of warmth, with maximum temperatures reaching up to 30°C (86°F). This climatic stability creates an inviting environment, fostering lush greenery and diverse ecosystems unique to the region.
In Asan, Guam, temperature patterns reveal a striking consistency typical of a tropical climate. Throughout the year, minimum temperatures remain stable between 25°C (77°F) and 26°C (79°F), while average temperatures settle around 27°C (81°F) to 28°C (82°F). The peak warmth occurs in September, with a maximum temperature reaching 30°C (86°F), while most other months experience highs ranging from 28°C (83°F) to 29°C (85°F). Seasonal transitions are subtle, primarily marked by a gradual increase in average temperatures from late winter to summer, illustrating the region's characteristic warmth and minimal fluctuation throughout the year.
Asan-Maina Village experiences a warm climate, with temperatures ranging from a minimum of 25°C (77°F) in March to a maximum of 30°C (86°F) in September. This mild variation creates a pleasant environment, making it an appealing destination throughout the year. For more details on the monthly temperatures in Asan-Maina Village, visit monthly temperatures in Asan-Maina Village.
Asan, Guam experiences a distinct precipitation pattern characterized by a marked wet season that peaks during the summer months. The total monthly rainfall significantly increases from 61 mm (2.4 in) in January to a remarkable 405 mm (16.0 in) in August, highlighting the area's susceptibility to heavy rain. This period of elevated precipitation typically corresponds with an increase in rainy days, peaking at 30 days of rain in both July and August, providing a stark contrast to the drier months earlier in the year, such as January and March, which feature only about 15 days of rain.
Furthermore, the precipitation begins to taper off after the peak summer months, with September still receiving a substantial 375 mm (14.8 in), followed by diminished rainfall in October (356 mm) and November (202 mm). December provides a further decrease in precipitation, yielding 105 mm (4.1 in) over 22 rainy days. Overall, the data illustrates a tropical climate strongly influenced by seasonal monsoon patterns, where the summer months bring significant rainfall, shaping the region's lush tropical landscapes and influencing local ecosystems.
In Asan, Guam, sunshine duration displays a distinct seasonal trend, with a noticeable increase in hours of sunlight as the year progresses from winter to summer. Starting from 232 hours in January, the sunshine hours steadily rise, peaking in May at 336 hours. This increment underscores the transition into the summer months, characterized by longer days and increased solar exposure. The bright, sunny conditions peak during the late spring and early summer, promoting vibrant tropical landscapes and an inviting atmosphere for both residents and visitors.
As summer arrives, the sunshine hours begin to gradually decline, with June recording 319 hours and July experiencing a further reduction to 300 hours. By late summer and into autumn, the duration of sunlight decreases, with hours ranging from 259 hours in September to 280 hours in November. Notably, the cooler months still retain a commendable amount of sunlight, averaging between 263 hours to 286 hours. This balancing act of ample sunshine, even in months with lower totals, indicates that Asan's climate remains predominantly bright and welcoming year-round, contributing to its lush vegetation and overall appeal.
Asan, Guam exhibits consistently high UV Index levels throughout the year, categorized as extreme across all months. The index peaks in March and April, reaching an elevated 15, while remaining noticeably high from January (11) to February (13) and later, in September (15), which signifies the need for heightened sun protection during these months. The burn time remains constant at just 10 minutes, underscoring the acute risk of skin damage from UV radiation under these conditions.
Despite slight fluctuations in the UV Index, with values ranging from 11 to 15, the overall theme remains one of caution, as individuals should take protective measures against sun exposure throughout the year. The persistent extreme categorization stresses the importance of utilizing sunscreen, wearing protective clothing, and seeking shade, especially during peak hours. This unwavering UV intensity not only poses risks but also serves as a reminder of the vibrant tropical climate that characterizes Asan, where careful sun management is essential for maintaining health and well-being.
UV Risk Categories
In Asan, Guam, daylight duration exhibits a relatively stable pattern throughout the year, highlighting the region's equatorial proximity. The year begins with 11 hours of daylight in both January and February, offering a consistent, albeit shorter, light span typical of winter months. As the calendar transitions into March, daylight increases to 12 hours and remains at this length from then through September, showcasing a period of abundant sunlight that supports the vibrant tropical ecosystems characteristic of the area.
As daylight duration begins to contract, October, November, and December revert back to 11 hours of sunlight. This gentle ebb and flow of daylight hours ensures that residents and visitors alike can enjoy ample time to engage in outdoor activities and appreciate the natural beauty of the region. The balance of light throughout the year contributes to the warm climate and allows for a diverse range of flora and fauna to thrive, reinforcing Asan's allure as a tropical paradise.
Asan-Maina Village, Guam experiences a tropical climate characterized by warm temperatures year-round, with average highs ranging from 27°C (81°F) in January to 30°C (86°F) in September. The region sees significant rainfall, particularly in the summer months, with August experiencing the highest precipitation at 405 mm (16.0 in). Sunshine is abundant, peaking at 336 hours in May, contributing to a vibrant tropical environment. Visitors should be prepared for warm temperatures and heavy rainfall, especially from June to September. For more details, check the Asan-Maina Village climate.
In conclusion, Asan, Guam, presents a captivating climate characterized by a stable temperature range, abundant precipitation, high UV Index levels, and consistent daylight duration throughout the year. With temperatures consistently warm and a distinct wet season, the region fosters lush environments and vibrant biodiversity. The persistent extreme UV Index serves as a reminder for sun safety, while the stable daylight hours provide ample opportunity for outdoor pursuits. Together, these climatic elements not only enhance the natural beauty of Asan but also underscore the importance of mindful interaction with its rich ecosystem, making it a unique destination for both relaxation and adventure in a tropical setting.