Last updated: January 18, 2025
The climate of Yona, Guam, is classified under the Koppen-Geiger Af category, indicating a tropical rainforest climate characterized by consistently warm temperatures throughout the year. Average daily temperatures hover around 27°C (82°F), with a minimum recorded in March at 25°C (77°F) and peaking at 30°C (86°F) in September. This stable and warm environment fosters lush vegetation and supports diverse ecosystems, making Yona a unique locale within the tropical climatic landscape.
In Yona, Guam, temperature patterns reveal a steady and warm climate throughout the year, characterized by minimal fluctuations. The minimum temperatures consistently hover around 25°C (77°F) to 26°C (79°F), while average temperatures remain stable at about 27°C (81°F) to 28°C (82°F). As the year transitions from April to September, temperatures gradually peak, with maximums reaching their highest at 30°C (86°F) in September. Notably, April marks a slight increase to 29°C (84°F), establishing a trend towards warmer summer months, while the subsequent fall and winter months see only nominal decreases. Overall, Yona’s climate embodies a tropical warmth, with minor seasonal shifts that maintain an inviting environment year-round.
Yona 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. This consistent warmth makes it an inviting destination for those seeking a tropical atmosphere. For more detailed information on the monthly temperatures in Yona Village, you can visit monthly temperatures in Yona Village.
Yona, Guam experiences a distinct precipitation pattern throughout the year, with significant rainfall predominantly concentrated in the summer months. January begins with a moderate rainfall of 61 mm (2.4 in), while February sees a slight increase at 77 mm (3.0 in). As the year progresses into the wet season, April witnesses a rise to 94 mm (3.7 in), but it is June, July, and August that mark the peak with substantial precipitation levels, reaching 159 mm (6.3 in), 276 mm (10.9 in), and 405 mm (16.0 in) respectively, accounting for a substantial portion of the annual total.
The number of rainy days further underscores the wet season, with July and August experiencing the highest frequency of precipitation, totaling 30 days each. This leads to a substantial accumulation of rainfall, contributing to the lush tropical environment characteristic of the region. Conversely, the months from December to March feature lower precipitation levels, with totals decreasing significantly as they transition from the wet season, culminating in 105 mm (4.1 in) in December. This seasonal variability highlights the tropical rainforest climate of Yona, making it an area marked by both vibrant ecosystems and regular rainfall.
In Yona, Guam, the duration of sunshine exhibits a clear seasonal trend, with notable increases from winter into summer. Starting the year with 232 hours of sunshine in January, the sunniest months gradually approach as spring unfolds. March and May emerge as standout months, with 316 hours and 336 hours of sunshine, respectively, creating an ideal backdrop for outdoor activities and exploration of the island's natural beauty. This rise continues through June, where the total reaches 319 hours, making these months particularly appealing for visitors and residents alike.
As summer gives way to the wetter months, a subtle decline in sunshine hours is observed, with July recording 300 hours and August dropping further to 269 hours. Following this trend, September and October witness lower levels of sunlight at 259 hours and 263 hours, reflecting the impact of increased precipitation during these months. However, as the year nears its end, November and December see a welcome rebound in sunshine, with totals of 280 hours and 286 hours, respectively. This oscillation in sunshine duration throughout the year not only enriches the island's lush landscapes but also provides varied experiences for those living in or visiting Yona.
The UV Index in Yona, Guam, reflects a consistently high potential for solar radiation exposure, classifying it as "extreme" for nearly the entire year. Beginning in January with a UV Index of 11, the intensity escalates rapidly, reaching a peak of 15 in both March and April. These elevated UV levels signal a crucial reminder for residents and visitors alike to take precautionary measures against sun exposure, as the recommended burn time stands at a mere 10 minutes across all months. With only slight fluctuations throughout the year, the consistent intensity underscores the importance of sun safety practices.
As the year progresses, the UV Index generally hovers between 12 and 15, with notable peaks in March, April, and September. While May and the summer months of June, July, and August maintain a high UV Index of 13 to 14, October and November see a minor decrease, yet still remain within the extreme category. This sustained high UV Index, regardless of seasonal changes, emphasizes the need for protective measures such as sunscreen, hats, and protective clothing to mitigate the risks associated with prolonged sun exposure in Yona’s tropical environment.
UV Risk Categories
In Yona, Guam, daylight duration remains relatively stable throughout the year, with slight variations reflecting the subtropical setting. During the winter months of January and February, residents enjoy approximately 11 hours of daylight each day, providing a consistent and ample amount of sunlight. As spring approaches, daylight extends to 12 hours in March and continues at this level through October, allowing for longer evenings ideal for various outdoor activities and social gatherings.
The stability in daylight duration indicates a minimal seasonal effect, reinforcing the warm, inviting climate typical of Yona. As the year concludes, daylight returns to 11 hours in November and December, signaling a cyclical rhythm. This consistent daylight not only enhances the region's vibrant ecosystems but also offers a predictable environment for both locals and visitors to explore the natural beauty and cultural offerings of the island throughout the year.
Yona Village, Guam, experiences a tropical climate characterized by warm temperatures throughout the year. Average daily temperatures range from 27°C (81°F) to 28°C (82°F), with minimal variation, peaking at 30°C (86°F) in September. The region sees significant rainfall, particularly in July and August, where monthly totals can exceed 400 mm (16 in). Despite the rain, sunshine hours remain plentiful, with May generally being the sunniest month at 336 hours. For more details, visit Yona Village climate.
In conclusion, Yona, Guam, presents a unique tropical climate characterized by a steady temperature regime, substantial rainfall during the summer months, and consistently high UV Index levels throughout the year. Residents and visitors alike can expect warm temperatures averaging around 27°C (81°F), accompanied by significant sunshine, particularly during spring and summer. The nearly stable daylight duration further enhances the region's outdoor appeal, promoting an active lifestyle year-round. However, the extreme UV Index serves as a critical reminder for the importance of sun protection. Together, these climatic elements contribute to Yona's vibrant environment, making it an attractive destination for those seeking natural beauty and recreational opportunities.