Thailand Weather Alert: Heavy Rainfall, Thunderstorms, and Flood Risks – May 2025 Update

The drumming of rain on rooftops, intermingled with the occasional rumble of thunder, sets the stage for an atmospheric adventure across Thailand. The Thai Meteorological Department has illuminated the skies with a fresh warning, urging residents to huddle in caution as the heavens prepare to unleash heavy rainfall. Flash floods and forest runoffs loom like uninvited guests, making it imperative for the people of Thailand to stay alert.

As raindrops prepare their symphonic descent over the next 24 hours, expect a tapestry of heavy showers to weave through northern Thailand, the bustling northeast, central Thailand—with Bangkok right at the heart of it—all the way to the scenic west coast of the south. The southwest monsoon has found a new dance partner in the Andaman Sea and West Thailand, while the winds from the southeast and south take a backseat, rendering the air across the lower north, lower northeast, central, and eastern regions as mild as a lullaby.

In the Andaman Sea and the Gulf of Thailand, the seas are feeling gentle with waves around 1 meter high, though when thunder decides to clap, the waves daringly climb beyond 2 meters, a challenge and a ballet for mariners who must navigate these waters with a sailor’s caution and an artist’s grace.

In the lush, mountainous north, 60% of the region will find itself draped in thunderstorms. Places like Chiang Rai, Phayao, and Nan might want to grab their umbrellas with extra gusto, for heavy rain has been penciled in their weather diaries. Temperatures will flirt between a cool 24 to 25°C and a warm embrace of 33 to 36°C, accompanied by southwesterly breezes tiptoeing at 5 to 15 kilometers per hour.

The northeast will wear thunderstorms like a scattered yet exquisite beadwork, with provinces like Loei, Nong Khai, and Bueng Kan echoing with the sound of falling rain. The mercury will hover between 24 and 25°C, playfully jumping to 33 to 35°C, while southeasterly winds will dance through the region at a sprightly pace of 10 to 20 kilometers an hour.

Central Thailand’s canvas shall be no different, with Nakhon Sawan and Uthai Thani painted in shades of stormy gray, as thunderclouds promise dance-like showers. Temperatures shall stride from 26 to 27°C up to a toasty 35 to 36°C, as breezier southerlies prance by at 10 to 20 kilometers per hour.

Meanwhile, the east will not be left out of nature’s symphony, as 60% of the landscape, including Nakhon Nayok and Prachinburi, will find themselves under a watery siege. Temperature twirls will likely be between 25 and 26°C, rising to 33 and 35°C, with the breezy serenade of southeasterly winds at a lively 10 to 30 kilometers per hour. Over in the eastern seas, tranquility meets tempest as waves rise to over 2 meters during thunderstorms.

As for the southern shoreline on the east, Surat Thani to Narathiwat will host a 40% storm gathering, their coastal tapestries shimmering from 24 to 27°C to 33 to 35°C, encouraged by southeasterly tempos at 10 to 30 kilometers an hour, stirring the sea into waves below 1 meter, leaping higher with the storm’s applause.

The west coast will waltz through storms covering 60% of its domain, from the picturesque beaches of Phuket to the serene stretches of Satun. The temperature will vary from 24 to 25°C to 33 to 35°C, as energetic southwesterlies glide along at 15 to 30 kilometers an hour, their breezy laughter rustling the sea into 1 meter high waves or more where storm clouds sing.

Bangkok, a city that never sleeps, will find itself under a veil of thunderstorms over 60% of the cityscape, its vibrant streets cooling under the occasional drench of heavy rain. The capital will move through temperatures between 26 and 27°C up to a bustling 33 to 36°C, with persistent southerly winds whispering gently at 10 to 20 kilometers an hour.

And thus, the stage is set in Thailand—a country where weather broadcasts translate into an intricate mix of science and artistry. Whether comforting or alarming, the elements hold their own distinct charm, a meteorological masterpiece as unpredictable as it is mesmerizing. Amidst these rains, may you find the simple joy of a rain dance or the mesmerizing sight of trees leaning into the wind, nature’s own ballet under a curtain of rain. So fasten your raincoats, Thailand, the clouds have their own epic story to tell.