Last updated: January 18, 2025
Sinajana, Guam, is characterized by a tropical rainforest climate classified as Af under the Köppen-Geiger system. With a minimum temperature reaching 25°C (77°F) in March and an average temperature of 27°C (82°F) throughout the year, the region enjoys a consistently warm climate. The maximum temperature peaks at 30°C (86°F) in September, contributing to the area’s lush greenery and vibrant ecosystems. This climatic profile supports diverse flora and fauna, making Sinajana a unique location for ecological study and exploration.
In Sinajana, Guam, temperature patterns exhibit minimal seasonal variation, reflecting a consistently warm tropical climate throughout the year. Monthly minimum temperatures typically hover around 25°C (77°F), while averages range between 27°C (81°F) and 28°C (82°F). A slight increase in warmth is observed from April to September, with maximum temperatures reaching up to 30°C (86°F) in September, suggesting a subtle peak during the summer months. Conversely, late autumn and winter months maintain relatively stable temperatures, ensuring an overall warm environment that fosters lush biodiversity. This climatic predictability underscores the region's characteristic tropical rainforest ecosystems.
In Sinajana Village, temperatures exhibit a range from a minimum of 25°C (77°F) in March to a maximum of 30°C (86°F) in September, showcasing the region's tropical climate. For more detailed information on the monthly temperatures in Sinajana Village, you can visit monthly temperatures in Sinajana Village.
Precipitation patterns in Sinajana, Guam, demonstrate a clear seasonal trend, characterized by a distinct wet season from June to October. During this period, the region experiences its highest rainfall, with July showcasing a staggering 276 mm (10.9 in), and August peaking at 405 mm (16.0 in). This formidable accumulation of rain over 30 days in both July and August significantly contributes to the area's lush tropical environment, providing essential moisture for its diverse ecosystems. The rainy season ensures a steady water supply, essential for sustaining the vibrant flora and fauna characteristic of Sinajana.
In contrast, the dry season from November to May features reduced precipitation, with January experiencing the lowest rainfall at 61 mm (2.4 in). Overall, monthly rainfall averages fluctuate throughout the year, with February and March showing a slight dip before precipitation begins to rise again in April. While even the driest months receive significant rainfall, the rainy season's intensity shapes the ecological landscape, making Sinajana a unique haven for tropical biodiversity. The interplay between thoughtful seasonal patterns and consistent rainfall creates an environment where life can thrive year-round.
In Sinajana, Guam, sunshine duration exhibits a notable seasonal trend, with a steady increase in sunlight hours as the year progresses from winter to summer. Beginning in January, the region experiences 232 hours of sunshine, gradually rising to its peak in May, when residents bask in an impressive 336 hours. This period marks the height of sunshine exposure, offering longer days and a vibrant atmosphere that contrasts sharply with the shorter, cloudier days of the winter months. The consistent increase in daylight hours from January through May underscores the region's transition into summer, fostering an environment ripe for outdoor activities and tourism.
As the summer unfolds, sunshine hours begin to slightly decline, with June delivering 319 hours, followed by 300 hours in July. The reduction in sunlight continues into the late summer and autumn months, with September recording 259 hours. Despite these decreases, the overall annual sunshine totals remain generous, averaging well over 250 hours per month throughout the year. Notably, while the summer months offer the most sunlight, the subsequent drop signals the onset of the rainy season, as increased cloud cover coincides with heavier precipitation. This interplay between sunshine and rainfall creates a dynamic climatic experience in Sinajana, enhancing its tropical appeal.
In Sinajana, Guam, the UV Index remains consistently high year-round, indicating a significant risk of harm from unprotected sun exposure. The index peaks in March and April at 15, categorized as extreme, which underscores the necessity for diligent sun protection during these months, as even very brief exposure can lead to skin damage in approximately 10 minutes. Although the values fluctuate slightly throughout the year, the UV Index generally remains at 11 to 15, reflecting the region's equatorial location, which intensifies solar radiation.
The UV Index starts off at 11 in January and December, highlighting an environment where caution is imperative throughout the entire year. While some months exhibit slight variations, such as a decrease to 12 in November and 13 in both February and October, the overall exposure category remains extreme, reinforcing the need for protective measures during outdoor activities. Residents and visitors alike should prioritize sun safety strategies, including the use of sunscreen, protective clothing, and seeking shade, particularly during midday hours when UV rays are most potent.
UV Risk Categories
In Sinajana, Guam, daylight duration remains relatively stable throughout the year, hovering around 11 to 12 hours per day. The year begins with 11 hours of daylight in January and February, setting a consistent baseline for the winter months. As spring approaches in March, daylight extends to 12 hours, a trend that persists through the summer months of April to September. This modest increase during the first half of the year reflects the region's equatorial climate, where variations in daylight are minimal compared to more temperate zones.
As the year transitions into autumn, daylight hours begin to decline once again, returning to 11 hours in October and persisting through December. Despite these slight fluctuations in daylight duration, Sinajana maintains a unique balance that enables residents and visitors to enjoy ample sunlight year-round. This stable rhythm of light promotes a vibrant lifestyle, allowing for outdoor activities and fostering the lush ecosystems that define the tropical environment of Guam.
Sinajana Village, Guam, experiences a tropical climate with warm temperatures year-round, averaging between 27°C (81°F) and 28°C (82°F). The hottest months are from June to September, where maximum temperatures can reach up to 30°C (86°F). Rainfall is significant, especially during the summer, peaking in August with 405 mm (16.0 in). Sunshine is abundant, with March and May recording the highest hours at 336 and 316, respectively. For more detailed information, visit Sinajana Village climate.
In conclusion, Sinajana, Guam, presents a compelling case for understanding tropical climate dynamics, characterized by consistently warm temperatures, high levels of rainfall, and abundant sunshine throughout the year. The region's stable patterns of daylight duration and extreme UV Index levels emphasize the importance of sun safety and environmental awareness for both residents and visitors. The interplay among temperature, precipitation, and sunlight creates an ecosystem rich in biodiversity, offering a unique glimpse into the vitality of tropical life. As Sinajana continues to attract those seeking natural beauty and outdoor adventures, it remains crucial to promote responsible stewardship of its vibrant landscape while enjoying the exceptional climate it offers.