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Last update: 01:00, 2 Jun 2026
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Live rain radar for Rayong, updated every 5 min. See Gulf squalls before they close the Ko Samet ferry at Ban Phe or halt Map Ta Phut operations. Free.
Rayong hosts the largest petrochemical and industrial complex in Southeast Asia at Map Ta Phut. Rain here is a safety and operational variable for one of Thailand's most critical economic assets. When afternoon squalls hit the port and refinery complex, outdoor operations are paused and tanker loading schedules shift. The decision to hold or continue is made on real-time radar data, not a morning forecast.
Ko Samet, accessible from Ban Phe pier, is one of Bangkok's most popular weekend destinations. The ferry takes 40 minutes in calm conditions and should not be attempted in the squalls that arrive fast off the Gulf. Checking the radar before driving 2 hours from Bangkok to the pier saves both the journey and the risk.
RainViewer combines Eastern Seaboard radar for Rayong. From here, you can track rain in Chon Buri, Chanthaburi, and offshore Gulf areas.
Daily afternoon storms from late May. Rayong receives approximately 1,400mm annually. August and September are heaviest.
May storms arrive fast; October can produce intense late-season events.
Ko Samet in full tourist season; industrial operations at peak capacity.
Squalls that form offshore can close this route in 30 minutes. Checking the radar before the 2-hour drive from Bangkok avoids arriving at a pier where no boats are running.
Tanker loading, crane operations, and outdoor pipeline work all pause when lightning and heavy rain arrive. Operations managers use real-time radar to time holds and restarts.
Rayong durian and fruit harvest timing during June–August depends on dry windows — fruit loaded wet deteriorates and misses export quality grades.
See rain in Rayong before it closes the ferry pier or the port
Whether you're managing Map Ta Phut operations or timing a Ko Samet crossing, RainViewer gives you street-level and offshore precision updated every 5 minutes.
See the exact window when the storm passes and the soil is passable again
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See whether the cell is moving toward you or tracking away
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