Mount Lamlam
Mountain Guam's highest point with exceptional local relief
Near Hågat on Guam, Mount Lamlam is the island’s highest point; visitors make short hikes for coastal panoramas and combine the trip with local Chamorro villages.
Mount Lamlam is the highest point on the island of Guam, rising to 406 metres above sea level. It is a modest peak by elevation but prominent on the island’s landscape and in local orientation.
The mountain is accessible from roads and short trails near populated areas and provides local viewpoints over the island and surrounding ocean. It is often mentioned in discussions about Guam’s proximity to the Mariana Trench, which lies offshore and creates a very large local oceanic depth relative to the island’s summit.
Historically and administratively the summit sits within the municipality of Hågat (formerly Agana Heights area) and forms part of Guam’s upland terrain used for local recreation and vantage points.
Mount Lamlam is located on the western side of Guam, within easy reach of coastal settlements and the island’s road network.
- Island high point: Highest point on the island of Guam at 406 metres above sea level and commonly cited in comparisons involving the nearby Mariana Trench.
How to Get to Mount Lamlam #
Drive from Hågat (Agat) or the Guam capital, Hagåtña; local roads access trailheads within a short drive. Local taxis and rental cars are common on Guam.
Tips for Visiting Mount Lamlam #
- If curious about the deep‑sea claim, note that the ''base‑to‑summit'' measurement uses the nearby Mariana Trench depth and is a geological curiosity rather than a hiking metric.
- Drive or taxi from Hågat (Agat) to reach trailheads; trails can be short but steep.
- Combine a visit with coastal viewpoints for the dramatic ocean perspective.
Best Time to Visit Mount Lamlam #
Best during the dry season (December-June) for clearer views and less humidity; Guam is tropical year‑round so prepare for sun and sudden showers.
Weather & Climate near Mount Lamlam #
Mount Lamlam's climate is classified as Tropical Rainforest - Tropical Rainforest climate with consistently warm temperatures year-round. Temperatures range from 22°C to 29°C. Heavy rainfall (2344 mm/year), wettest in August.
January
January is warm with highs of 28°C and lows of 22°C. Significant rainfall (125 mm).
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February
February is warm with highs of 28°C and lows of 22°C. Regular rainfall (99 mm).
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March
March is warm with highs of 28°C and lows of 22°C. Regular rainfall (82 mm).
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April
April is warm with highs of 29°C and lows of 23°C. Regular rainfall (84 mm).
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May
May is warm with highs of 29°C and lows of 24°C. Significant rainfall (126 mm).
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June
June is the warmest month with highs of 29°C and lows of 24°C. Significant rainfall (167 mm).
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July
July is warm with highs of 29°C and lows of 23°C. Heavy rain (249 mm).
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August
August is warm with highs of 29°C and lows of 23°C. The wettest month with heavy rain (382 mm).
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September
September is warm with highs of 29°C and lows of 23°C. Heavy rain (320 mm).
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October
October is warm with highs of 29°C and lows of 23°C. Heavy rain (308 mm).
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November
November is warm with highs of 29°C and lows of 23°C. Heavy rain (235 mm).
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December
December is warm with highs of 28°C and lows of 23°C. Significant rainfall (167 mm).
