Last updated: January 18, 2025
The climate of Dededo, Guam is classified as Af according to the Köppen-Geiger system, which signifies a tropical rainforest climate characterized by consistently high temperatures and humidity. The minimum temperature averages around 25°C (77°F) in March, while the average temperature remains at a warm 27°C (82°F) throughout the year. Peak temperatures occur in September, reaching a maximum of 30°C (86°F). This stable thermal environment supports a vibrant ecosystem, reflecting the rich biodiversity typical of tropical regions.
In Dededo, Guam, temperature patterns exhibit a remarkable consistency throughout the year, predominantly characterized by warm tropical conditions. The minimum monthly temperatures remain stable, typically around 25°C (77°F), gradually rising to 26°C (79°F) in November and December. Average temperatures hover around 27°C (81°F) to 28°C (82°F), with a slight peak in May and June. Maximum temperatures see the most significant rise toward the end of the summer, reaching a high of 30°C (86°F) in September. This seasonal stability, combined with only minor fluctuations in both minimum and maximum values, underscores the area's tropical climate, fostering a lush environment that remains inviting year-round.
In Dededo Village, the climate features a minimum temperature of 25°C (77°F) in March and a maximum of 30°C (86°F) in September, reflecting the warm tropical environment typical of the region. For more detailed information on monthly temperatures, visit monthly temperatures in Dededo Village.
Precipitation patterns in Dededo, Guam reveal a distinct wet season, particularly from June to October, contributing to its tropical rainforest climate. The rainfall begins to increase significantly in June, with 159 mm (6.3 in) recorded over 23 rainy days, escalating to a peak in August with 405 mm (16.0 in), occurring over 30 days. This intense wet period is characterized by frequent rainfall, which can lead to lush vegetative growth and contributes to the region's biodiversity.
Conversely, the drier months, which include January through March, feature noticeably lower precipitation levels, with averages ranging from 53 mm (2.1 in) in March to 77 mm (3.0 in) in February. Notably, January, despite being the driest month with 61 mm (2.4 in) of rainfall, still experiences 15 rainy days. As the year progresses toward the end of the dry season, the precipitation levels gradually increase, marking the onset of a wetter climate and reinforcing the cyclical pattern characteristic of the region.
In Dededo, Guam, sunshine duration showcases a clear upward trajectory from the winter months into the summer, indicative of the region's tropical climate. January starts with 232 hours of sunshine, gradually increasing through February to 267 hours. By March, the hours of sunlight peak at 316 hours, hinting at the approach of summer. This trend continues into April and May, where the sunshine reaches its zenith with 336 hours in May, highlighting it as the sunniest month of the year. During these months, residents and visitors can enjoy extended daylight, perfect for outdoor activities and exploration.
As the summer unfolds, sunshine duration begins to stabilize but remains significantly high, with June still offering 319 hours. However, subsequent months see a gradual decrease, with August witnessing 269 hours of sun as the wet season intensifies, resulting in increased cloud cover and precipitation. September follows closely with 259 hours, marking the lowest sunshine hours for the year. The transition into fall sees a slight rebound, with sunlight increasing to 263 hours in October, then steadily climbing again through November and December. Overall, the pattern of sunshine in Dededo illustrates a vibrant seasonal cycle, where the summer months provide ample sunlight before a modest decline during the rainy season.
In Dededo, Guam, the UV Index consistently remains at extremely high levels throughout the year, reflecting the region's tropical setting. Starting from January with a UV Index of 11, the danger of harm from unprotected sun exposure is significant. This intensity peaks in March and April when the UV Index reaches 15, indicating extreme risk levels. With a burn time of just 10 minutes, residents and visitors must take precautions such as wearing protective clothing and applying sunscreen when venturing outdoors during these months, particularly as the sun's rays can cause skin damage in a matter of minutes.
As the year progresses, the UV Index maintains a high range, fluctuating slightly but seldom dropping below 11. While May sees a slight decrease to 13, it stays around 14 through June, July, and August, emphasizing continued vigilance against sun exposure. Interestingly, September brings another peak at 15, followed by minor declines in October to 13 and November at 12. The year wraps up with December returning to 11. This pattern underscores the need for year-round sun safety measures in Dededo, making it crucial for all individuals to remain mindful of UV exposure regardless of the season.
UV Risk Categories
In Dededo, Guam, daylight duration remains relatively consistent throughout the year, with only modest fluctuations that reflect the region's tropical climate. From January to February, the amount of daylight is stable at 11 hours, providing a predictable rhythm to the daily schedule. As spring approaches, there is a gradual increase in daylight, peaking at 12 hours from March through September. This steady daylight duration enables a balance of light that supports outdoor activities and community life during the longer days of summer.
As the year transitions into the fall months, daylight duration begins to taper off, returning to 11 hours in October and remaining there through December. This slight reduction aligns with the region's consistent weather patterns, where the amount of light available drives many aspects of life in Dededo. Overall, the reliable daylight hours contribute to the area's vibrant environment, fostering a sense of stability in both daily routines and natural rhythms throughout the seasons.
Dededo Village, Guam experiences a tropical climate characterized by warm temperatures year-round, with average monthly highs ranging from 28°C (82°F) to 30°C (86°F). The wet season peaks from July to September, where precipitation can exceed 400 mm (16 in) in August. Conversely, the months of January through March are relatively drier, with January receiving around 61 mm (2.4 in) of rainfall. Sunshine is abundant throughout the year, especially in May, which enjoys up to 336 hours of sunlight. For more details, visit Dededo Village climate.
In conclusion, Dededo, Guam, exemplifies the characteristics of a tropical climate through its temperature, precipitation, sunshine duration, UV Index, and daylight patterns. With consistently warm temperatures and a distinct wet season marked by increased rainfall, the region supports a rich ecosystem. The high UV Index underscores the need for sun safety awareness, especially during the sunniest and hottest months. Meanwhile, the stable daylight duration fosters an environment conducive to outdoor activities year-round. Together, these elements create a unique and vibrant living landscape, highlighting the importance of understanding and adapting to the climatic nuances of this Pacific island community.