Bangkok morning temps to drop to 18°C this week
Bangkok weather update: A cool spell hits the capital from Jan 7-12, 2026. Morning temperatures will drop to a low of 18°C before warming up next week.
Bangkok Chills: Morning Temps to Drop to 18°C This Week
January 7, 2026 Bangkok residents should keep their jackets handy this week. A new weather forecast predicts a significant drop in temperature starting today, with morning lows dipping to a crisp 18°C over the weekend.
The latest data indicates a cooling trend affecting the capital from January 7 to January 12. The air mass will bring relief from the usual heat, creating pleasant morning conditions before the weather warms up again mid-month.
Forecasters pinpoint the coldest period between January 8 and January 11. During these days, morning temperatures at 7:00 AM will hover between 18°C and 19°C.
Daily Morning Forecast (7:00 AM)
The forecast breaks down the expected temperatures for the coming days as follows:
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Jan 7: 20.7°C
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Jan 8: 19.6°C
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Jan 9: 18.2°C (Expected Low)
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Jan 10: 18.5°C
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Jan 11: 19.2°C
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Jan 12: 20.8°C
The cool breeze will likely depart by early next week. From January 13 to 15, temperatures will steadily rise, climbing back to 23.2°C and reaching 25.8°C by the morning of January 15.
The forecast model uses a color-coded comparison to track the temperature changes. Blue and dark blue zones on the map highlight areas experiencing a significant drop compared to the baseline, confirming that a cooler air mass currently covers the city.
Thailand Weather Alert: Temps plunge 5-7°C, small boats ordered ashore
The Thai Meteorological Department (TMD) has issued a weather warning for the week, forecasting a sharp drop in temperatures across upper Thailand and dangerous sea conditions in the South.
A rather strong high-pressure system from China currently extends over upper Thailand and the South China Sea. This system brings cool to cold weather and strong winds to the region.
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Northeast: Residents will feel the sharpest change, with temperatures dropping by 5 – 7°C.
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North, Central, and East: These regions will see a temperature decrease of 2 – 5°C.
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Bangkok: The capital is not exempt. The city will experience strong winds and a temperature drop of 3 – 5°C, with lows ranging between 15 – 22°C.
A moderate northeast monsoon prevails over the Gulf of Thailand and the Andaman Sea. This system will strengthen from January 6 – 9, bringing increased rainfall and isolated heavy downpours to the lower South.
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Rough Seas: Strong winds will force waves in the Gulf of Thailand up to 2 – 3 meters, and above 3 meters in thunderstorm areas.
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Safety Warning: The TMD explicitly advises small boats in the Gulf to keep ashore throughout this period. All other ships should proceed with extreme caution and avoid stormy areas.
The cold spell will ease towards the end of the week. As the high-pressure system weakens during January 11 – 12, temperatures will rise, and morning fog will blanket parts of the upper country. Drivers should exercise caution due to reduced visibility during these morning hours.
Authorities urge people in upper Thailand to stay warm and monitor their health during this rapid weather transition. Additionally, the combination of dry air and strong winds increases the risk of fire; residents should be vigilant regarding fire safety.
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