Inarajan Climate

Last updated: January 18, 2025

Inarajan, Guam, is characterized by a tropical rainforest climate (Köppen-Geiger classification Af), offering a consistently warm environment throughout the year. Temperatures exhibit a range with a minimum of 25°C (77°F) in March and an average of 27°C (82°F) overall, peaking at a maximum of 30°C (86°F) during September. This stable climate fosters a rich biodiversity and vibrant ecosystems, making Inarajan a unique locale for both scientific research and ecological tourism.

Inarajan temperature by month

Inarajan, Guam experiences a remarkably stable temperature profile throughout the year, characterized by warm conditions and minimal fluctuation. From January to March, temperatures remain consistent, with minimums around 25°C (77°F) and average highs peaking at 29°C (84°F). As the year progresses into the warmer months of April and May, average temperatures subtly rise to 28°C (82°F), while maximums reach up to 30°C (86°F) by September. This peak warmth is notably maintained through August and September, after which temperatures gradually return to the lower averages seen earlier. Overall, this tropical climate reveals a steady pattern that fosters a lush environment, ideal for diverse flora and fauna.

Monthly Temperatures in Inarajan, Guam

The chart illustrates Inarajan's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec818080818282828282828282
Data source: Inarajan temperature data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
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The average of daily temperatures (24 hours) calculated across all days in the month.

Inarajan Village experiences a range of temperatures throughout the year, with March seeing a minimum of 25°C (77°F) and September reaching a maximum of 30°C (86°F). For more detailed information on monthly temperatures in Inarajan Village, you can refer to the provided link: monthly temperatures in Inarajan Village.

Precipitation Patterns in Inarajan

Inarajan, Guam exhibits a pronounced seasonal pattern of precipitation, predominantly influenced by the tropical climate. The year begins with relatively lower rainfall, measuring 63 mm (2.5 in) in January and peaking at 94 mm (3.7 in) during April. However, as the rainy season progresses, precipitation escalates dramatically, particularly in the months of July and August, where totals soar to 275 mm (10.8 in) and 388 mm (15.3 in), respectively. This significant uptick correlates with an increase in rainy days as well, with July experiencing precipitation on nearly every day of the month.

As the wet season transitions into fall, precipitation levels remain substantial but gradually decline. September and October contribute 369 mm (14.5 in) and 358 mm (14.1 in) respectively, while November and December see a decrease to 207 mm (8.1 in) and 115 mm (4.5 in). Throughout the year, the total number of rainy days varies, with the peak occurring in July at 30 days, underscoring the intense tropical downpours typical of the region. This fluctuating precipitation pattern not only shapes the local climate but also profoundly influences the diverse ecosystems that thrive in Inarajan.

Monthly Average Precipitation in Inarajan, Guam

The average monthly precipitation in Inarajan, providing insights into seasonal rainfall patterns and the region's precipitation trends throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec6380609482160275388369358207115
Data source: Inarajan precipitation data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
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Sunshine Duration in Inarajan

Inarajan, Guam exhibits a clear seasonal trend in sunshine duration, with a notable increase in hours from winter to summer. January begins with 233 hours of sunshine, gradually rising through February to 267 hours. This upward trajectory continues in March, when days lengthen further to 316 hours, and peaks in May with an impressive 335 hours. This period represents the height of sunshine, showcasing the region’s capacity for abundant sunlight, which is essential for both ecosystems and tourism.

As the summer months transition into fall, the sunshine hours start to taper off, yet they remain relatively high compared to the winter months. June retains a strong count at 317 hours, while July experiences a slight drop to 301 hours. By August, sunshine hours decrease to 267 hours, continuing the trend into September at 260 hours. October and November show a mild recovery with 263 hours and 278 hours respectively, before December closes the year with 285 hours. This consistent seasonal ebb and flow underscores the importance of sunlight in shaping the climatic character of Inarajan, making it a desirable destination for sun-seekers year-round.

Monthly Sunshine in Inarajan, Guam

Monthly sunshine duration represents the total hours of direct sunlight Inarajan receives each month, excluding periods when the sun is obscured by clouds or other obstructions.
JanFebMarAprMayJunJulAugSepOctNovDec233h267h316h314h335h317h301h267h260h263h278h285h
Data source: Inarajan sunshine duration data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

Inarajan UV Index Trends

Inarajan, Guam experiences consistently high UV Index values throughout the year, categorizing its exposure to ultraviolet radiation as extreme. Starting with a UV Index of 11 in January and maintaining similar levels through December, the region presents a clear indication of the sun's potency. The months of February and March see even higher readings, peaking at 13 and 15, respectively. This sustained intensity, especially in spring, emphasizes the necessity for protective measures when spending time outdoors.

The UV Index remains a critical consideration for residents and visitors alike, especially during the summer months, where values hover around 14 from June to August. Notably, September ties back to the peak of 15, showcasing the potential for increased sun exposure even as the seasons begin to shift. Regardless of the specific month, the consistently low burn time of just 10 minutes indicates that individuals should take precautionary steps—such as applying sunscreen, wearing protective clothing, and seeking shade—to mitigate the risks associated with prolonged sun exposure in this tropical paradise.

Monthly Maximum UV Index for Inarajan, Guam

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Inarajan. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec111315151314141415141211
Data source: Inarajan UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Daylight Hours in Inarajan

Inarajan, Guam exhibits a relatively stable pattern of daylight duration throughout the year, characterized by a mild variation that reflects its tropical location. The year begins with approximately 11 hours of daylight in both January and February, providing a consistent start to the calendar. As the spring months unfold, daylight extends slightly, reaching 12 hours in March and remaining at this duration through the summer months of April to September. This consistent daylight duration during the warmer months facilitates vibrant ecosystems and enhances outdoor activities.

As autumn approaches, daylight begins to taper off again, reverting to 11 hours from October through December. This gradual decrease in daylight mirrors the slight cooling that occurs as the year progresses. The stable daylight hours of Inarajan allow for a predictable rhythm of life, making it a perfect spot for both residents and visitors to enjoy the tropical climate and engage in a variety of activities, from exploring lush landscapes to basking in the sun.

Average Monthly Daylight Hours in Inarajan, Guam

This chart shows the total daylight hours Inarajan receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec685h701h722h745h763h773h768h752h730h708h689h680h
Data source: Inarajan daylight hours, calculated based on aggregated data for various regional locations, determined by the times between sunrise and sunset.

Climate Highlights of Inarajan's Popular Destinations

Inarajan Village, Guam experiences a warm tropical climate with minimal temperature variation throughout the year, averaging between 27°C (81°F) and 28°C (82°F). The region encounters significant rainfall, particularly from July to September, with August being the wettest month, receiving up to 388 mm (15.3 in) of precipitation. Sunshine is abundant, especially in March and May, which enjoy over 330 hours of sun. Overall, Inarajan Village provides a lush environment balanced by warm temperatures and ample rainfall. For more details, visit Inarajan Village climate.

Conclusion

In conclusion, Inarajan, Guam, presents a captivating blend of consistent warm temperatures, abundant sunshine, and high UV exposure throughout the year, making it a unique tropical environment. The stable climate facilitates a thriving ecosystem while providing an attractive destination for outdoor enthusiasts. With monthly variations in precipitation and daylight duration, the region maintains a balance that supports both local biodiversity and recreational pursuits. Understanding these climatic patterns equips residents and visitors alike with the knowledge to embrace the natural beauty of Inarajan while taking necessary precautions to enjoy the sunshine safely.

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