December 5 weather: Bangkok, south hit by downpours, haze persists
Thailand’s Meteorological Department (TMD) issued a warning today, December 5, forecasting heavy to very heavy rainfall across 24 provinces, with Bangkok and the upper southern region among the hardest hit. Meanwhile, upper Thailand continues to face chilly morning temperatures.
From now until tomorrow evening, people in southern provinces should brace for torrential downpours, especially in Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, and Pattani. The department advised residents to be cautious of flash floods and accumulated rainfall.
Meanwhile, in the northeast and eastern regions, light rain and thunderstorms are expected in some areas, while the rest of upper Thailand remains cool during the early hours.
The TMD also raised an alert for 10 provinces expected to be most severely affected by rain, due to a moderate cold air mass from China spreading over northern Thailand, the northeast, and the South China Sea. This weather pattern is drawing moisture from the east, impacting the lower northeast, central, eastern, and southern regions, as well as the Gulf of Thailand.
Air quality in Bangkok, the central region, north, and east remains moderate to poor due to weak air circulation, leading to PM2.5 dust and haze accumulation.
Regional weather forecast
North Thailand
- Cool to cold mornings with fog
- Temperatures: lows of 14 to 21 degrees Celsius (°C), highs of 29 to 34°C
- Mountain tops: 6 to 16°C
- Wind: northeasterly at 10 to 15 kilometres per hour, later 10 to 15 km/h
Northeast Thailand
- Chilly mornings with strong winds, and isolated light rain in the lower region
- Temperatures: lows of 16 to 23°C, highs of 31 to 33°C
- Mountain tops: 11 to 14°C
- Wind: northeasterly at 10 to 30 km/h
Central Thailand
- Cool mornings with light fog
- Rain in 30% of the area, especially in Saraburi, Ayutthaya, Nakhon Pathom, Samut Songkhram, Samut Sakhon, and Ratchaburi
- Temperatures: lows of 21 to 25°C, highs of 32 to 35°C
- Wind: northeasterly at 10 to 20 km/h
Eastern Thailand
- Thunderstorms in 40% of the region, mostly in Nakhon Nayok, Prachin Buri, Sa Kaeo, Chachoengsao, Rayong, Chanthaburi, and Trat
- Temperatures: lows of 22 to 24°C, highs of 33 to 34°C
- Wind: northeasterly at 15 to 30 km/h
- Waves: around one metre, more than two metres in thunderstorms
Southern Thailand (East coast)
- Thunderstorms in 60% of the area, with heavy to very heavy rain in Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat, Phatthalung, Songkhla, and Pattani
- Temperatures: lows of 22 to 24°C, highs of 32 to 34°C
- From Surat Thani northward: easterly wind at 15 to 30 km/h, waves around one metre, exceeding two metres in storms
- From Nakhon Si Thammarat southward: northeasterly wind at 15 to 35 km/h, waves one to two metres, exceeding two metres in storms
Southern Thailand (West coast)
- Thunderstorms in 40% of the area, with isolated heavy rain in Ranong, Phang Nga, Trang, and Satun
- Temperatures: lows of 23 to 24°C, highs of 32 to 34°C
- Wind: northeasterly at 15 to 30 km/h
- Waves: around one metre, over two metres in thunderstorm zones
Bangkok and surrounding areas
- Rain in 40% of the area
- Temperatures: lows of 23 to 24°C, highs of 33 to 34°C
- Wind: northeasterly at 10 to 20 km/h
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