Khao Sam Roi Yot National Park
Park Coastal national park with limestone cliffs and wetlands
A coastal Thai park in Prachuap Khiri Khan with limestone hills, marshes and beaches; visitors explore Phraya Nakhon Cave, walk coastal trails and watch waterbirds.
Khao Sam Roi Yot National Park is a coastal protected area in Prachuap Khiri Khan province on Thailand’s Gulf Coast. The park protects limestone hills, coastal plains, marshes and mangrove habitat.
The area was designated a national park to protect its coastal karst landscape and wetlands; management has focused on habitat conservation and regulated public access. Local communities historically used the coastal zone for fishing and small-scale agriculture prior to formal protection.
The park sits on the Gulf of Thailand coast in Prachuap Khiri Khan province, with park entrances and visitor points along the shoreline. It lies within easy reach of provincial towns on the southern central Thai coast.
- Best time: Dry-season months from roughly November to February offer the most comfortable weather for trails and cave visits.
- Access: Trails and boat landings are used to reach key sights; expect some short hikes and stair sections to reach caves and viewpoints.
What to See #
- Phraya Nakhon Cave: A sea cave with a large chamber that contains the iconic royal pavilion visible when sunlight enters through the cave mouth; reached by a short walk and stair passage from the park entrance.
- Laem Sala Beach: A shoreline area of sand and reef that serves as a common landing point for boats and the trailhead to nearby viewpoints.
Tips for Visiting Khao Sam Roi Yot National Park #
- Plan to visit Phraya Nakhon Cave at first light - the shaft of sunlight on the royal pavilion is best early and you'll beat the mid‑day tour groups and heat.
- Don't skip the Thung Sam Roi Yot freshwater marsh boardwalk: it's a top spot for waders and migratory birds, especially around low tide and in the cooler months.
- To save time on the coastal approach to Laem Sala and the cave, ask locally about the park's boat crossings across the bay - taking a short boat ride cuts much of the seaside walk and reduces exposure to sun and heat.
Best Time to Visit Khao Sam Roi Yot National Park #
Visit in the cool, dry months (November-February) for the best weather and easiest access to trails, beaches and boat trips.
Weather & Climate near Khao Sam Roi Yot National Park #
Khao Sam Roi Yot National Park's climate is classified as Tropical Savanna - Tropical Savanna climate with consistently warm temperatures year-round. Temperatures range from 21°C to 32°C. Moderate rainfall (973 mm/year) with a pronounced dry season.
January
January is warm with highs of 29°C and lows of 21°C. Light rainfall and partly cloudy skies.
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February
February is warm with muggy conditions (dew point 22°C). Light rainfall.
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March
March is hot, feeling like 31°C due to high humidity. Moderate rainfall (50 mm) and partly cloudy skies.
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April
April is the hottest month, feeling like 33°C due to high humidity. Moderate rainfall (64 mm) and partly cloudy skies.
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May
May is hot, feeling like 33°C due to high humidity. Regular rainfall (96 mm) and mostly overcast skies.
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June
June is hot, feeling like 32°C with oppressive humidity. Moderate rainfall (63 mm) and mostly overcast skies.
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July
July is hot, feeling like 31°C with oppressive humidity. Regular rainfall (81 mm) and mostly overcast skies.
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August
August is hot, feeling like 31°C with oppressive humidity. Regular rainfall (93 mm) and mostly overcast skies.
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September
September is hot, feeling like 30°C with oppressive humidity. Significant rainfall (120 mm) and mostly overcast skies.
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October
October is warm with muggy conditions (dew point 24°C). The wettest month with heavy rain (219 mm) and mostly overcast skies.
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November
November is warm with muggy conditions (dew point 23°C). Significant rainfall (129 mm) and mostly overcast skies.
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December
December is warm with highs of 29°C and lows of 21°C. The driest month with just 14 mm and partly cloudy skies.
