Last updated: January 18, 2025
Agana Heights, Guam, exemplifies a tropical rainforest climate, classified as Af under the Köppen-Geiger system. This region experiences consistently warm temperatures throughout the year, with a minimum of 25°C (77°F) in March and an average of 27°C (82°F). The peak warmth occurs in September, where temperatures can reach a maximum of 30°C (86°F), creating a humid and vibrant environment that supports diverse ecosystems and influences local weather patterns.
In Agana Heights, Guam, temperature patterns exhibit remarkable stability throughout the year, characterized by consistently warm conditions. The minimum monthly temperatures hover around 25°C (77°F) to 26°C (79°F), while average highs typically reach 28°C (82°F) to 29°C (85°F). Notably, the warmest month is September, with maximum temperatures peaking at 30°C (86°F), marking a slight escalation in warmth as the year progresses. The transition from April to May sees a gradual increase in both average and maximum temperatures, reflecting the onset of the warmer months. Despite minor fluctuations, the overall climate remains comfortably tropical, fostering a lush environment year-round.
Agana Heights Village experiences a warm climate throughout the year, with temperatures ranging from a minimum of 25°C (77°F) in March to a maximum of 30°C (86°F) in September. For more details on the monthly temperatures, you can visit monthly temperatures in Agana Heights Village.
Agana Heights, Guam, experiences a significant variation in precipitation throughout the year, with a distinct wet season characterized by heavy rainfall. In the early months, from January to March, average precipitation ranges from 53 mm to 77 mm (approximately 2.1 in to 3.0 in) per month, accompanied by about 15 days of rainfall. However, this pattern shifts dramatically in the summer months, particularly from June to August, when monthly totals soar to 159 mm (6.3 in) in June and peak at a staggering 405 mm (16.0 in) in August, indicating the culmination of the wet season.
The substantial rainfall during the summer months also correlates with an increase in the number of wet days, with July and August recording the highest frequency of rainfall at 30 days each. Following this peak, precipitation begins to moderate in September and October, yet remains substantial at 375 mm (14.8 in) and 356 mm (14.0 in), respectively. As the year progresses towards November and December, rainfall lessens to 202 mm (8.0 in) and 105 mm (4.1 in), rounding out the year with fewer wet days and a transition into drier conditions, yet still highlighting the island's overall tropical climate.
In Agana Heights, Guam, sunshine duration exhibits a clear seasonal trend, with a notable increase from the winter months into the summer. January starts off the year with around 232 hours of sunshine, gradually rising through February to 267 hours. March marks a significant leap, with sunshine peaking at 316 hours, followed closely by April with 314 hours. The sunniest month is May, basking in 336 hours of radiant sunshine. This steady ascent continues as the island transitions into summer, ensuring a warm and bright atmosphere that promotes outdoor activities and fosters the region’s lush tropical flora.
As summer progresses, the sunshine hours begin to taper off, with July recording 300 hours and August seeing a drop to 269 hours. Following this peak, September and October maintain lower levels of sunlight, with 259 hours and 263 hours, respectively. Notably, even as the months wind down towards the end of the year, November and December continue to offer ample sunshine, contributing 280 hours and 286 hours. Throughout the year, Agana Heights showcases the richness of its tropical climate, particularly during the summer months when sunlight is at its highest, providing an inviting respite for both residents and visitors alike.
In Agana Heights, Guam, the UV Index reveals consistently extreme levels of solar radiation throughout the year, underscoring the necessity for sun protection for residents and visitors alike. Beginning in January with a UV Index of 11, the index crescendos to its peak in March and April, where it reaches a significant 15. This extreme classification signals that skin can burn within just 10 minutes of unprotected exposure. February witnesses a slight increase to 13, while May sees a modest dip to 13 as well, indicating that the risk for sunburn remains high.
As the year progresses into summer and early fall, the UV Index fluctuates but generally remains elevated, oscillating between 14 and 15 from June to September. July, August, and September maintain values of 14 and 15, reinforcing the importance of adhering to sun safety protocols during these months. Following September, there’s a gradual decrease in the index, with October resting at 13, November at 12, and December returning to 11. Overall, the data presents a compelling case for vigilance against UV exposure in Agana Heights, highlighting that even during the less intense months, protective measures are essential to mitigate skin damage.
UV Risk Categories
In Agana Heights, Guam, daylight duration remains relatively consistent throughout the year, reflecting its tropical climate positioned near the equator. The winter months of January and February yield approximately 11 hours of daylight each, providing shorter days that gradually extend as the year progresses. By March, daylight duration increases to 12 hours, a trend that stabilizes through the summer months of April, May, June, July, August, and September, where residents can enjoy a consistent 12 hours of light each day, perfect for outdoor activities and communal gatherings.
As autumn arrives, daylight starts to taper off once again, returning to 11 hours in October. This reduction continues into November and December, marking a return to shorter days as the year concludes. Overall, the steady daylight pattern in Agana Heights creates an inviting environment for both locals and tourists, enhancing the experience of the area’s vibrant culture and natural beauty throughout the changing seasons.
Agana Heights Village, Guam experiences a warm tropical climate with mild temperatures averaging around 27-28°C (81-82°F) year-round. The wettest months are July and August, receiving significant rainfall of up to 405 mm (16.0 in) and 276 mm (10.9 in), respectively. Sunshine is plentiful, peaking in May with 336 hours, while humidity remains high throughout the year. Despite its rain, Agana Heights maintains a consistent temperature, making it a unique destination. For more detailed information, visit Agana Heights Village climate.
In conclusion, Agana Heights, Guam, is characterized by a remarkably stable climate that fosters year-round warmth, abundant sunshine, and significant rainfall, creating a vibrant tropical ecosystem. The consistent temperatures and extreme UV Index highlight the necessity for sun protection, particularly during the peak months. Additionally, the steady daylight duration enhances outdoor experiences, encouraging community engagement and exploration. Together, these elements underscore the allure of Agana Heights as a lush, sun-drenched locale, offering both residents and visitors a dynamic environment to enjoy and appreciate throughout the year.