Footage from one Bangkok dashboard car camera captured a fireball followed by a brilliant white flash, that was also seen across the country.
"It was the middle of a blue sky day and there was a quick, bright light coming down," said Porjai Jaturongkhakun whose dashcam recorded the scene as he drove to work.
"I usually see shooting stars at night but I have never seen one in the day before," the 30-year-old satellite engineer told AFP.
"It was a meteor for sure, I am confident, because it was fast and very bright", Voravit Tanvuttibundit, adviser to the National Astronomical Research Institute of Thailand told AFP on Monday.
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"It is a normal occurrence but the meteor this morning was especially big and very bright", Voravit explained, adding that he also witnessed the meteor around 8.40 am (0140 GMT).
In a country imbued with superstition, many took the meteor strike as an ill omen.
What we often call "falling stars" are actually tiny bits of space rock that smash into the atmosphere at about 60 kilometres per second, burning up in flashes of light.
Occasionally, much bigger strikes are seen involving larger chunks of debris.
In October 2013, many Russian dashcams captured the astonishing moment a meteor weighing 10,000 tonnes exploded above the Urals, scattering over a wide area and injuring more than 1,000 people.
The force of that meteor explosion was the equivalent to 30 of the nuclear bombs dropped on the Japanese city of Hiroshima during World War II.