Thailand Weather Warning has been issued as the Thai Meteorological Department (TMD) forecasts thunderstorms and heavy rainfall across several parts of the country, including Bangkok, Chiang Mai, Phuket, Krabi, and other popular tourist destinations.

According to the latest 24-hour forecast, a moderate southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand, combined with a low-pressure system over northern Vietnam, is expected to bring widespread thunderstorms and localized heavy rain through June 17, 2026.

Authorities are advising residents, tourists, and mariners to remain cautious as flash floods, water runoff, and rough sea conditions are possible in affected areas.

Thailand Weather Warning Issued for Multiple Regions

The Thai Meteorological Department expects thunderstorms in many parts of Thailand, with heavy rainfall concentrated in northern, eastern, and southern provinces.

Popular tourist destinations including Chiang Mai, Phuket, Krabi, Bangkok, and Trat may experience periods of intense rainfall and thunderstorms.

Officials have warned that accumulated rainfall could trigger flash floods, particularly in low-lying areas, near waterways, and mountainous regions.

Areas Facing Heavy Rain Risk

Region	Areas Most Affected
North	Chiang Mai, Chiang Rai, Nan, Tak, Mae Hong Son
East	Chanthaburi, Trat
South West Coast	Phuket, Krabi, Trang, Satun
Bangkok Area	Thunderstorms across 60% of region
Gulf Coast	Chumphon, Surat Thani, Songkhla

Travelers planning outdoor activities should monitor local weather updates throughout the day.

Bangkok Faces Thunderstorms Across 60% of the City

Bangkok and surrounding provinces are expected to see thunderstorms across approximately 60% of the area.

Temperatures will remain hot despite the rain, with daytime highs reaching between 35°C and 37°C. Gusty winds and localized downpours may affect road traffic and public transportation during peak travel periods.

Visitors exploring popular attractions such as the Grand Palace, Chatuchak Market, or riverside areas should be prepared for sudden weather changes.

Bangkok Weather Forecast

Weather Factor	Forecast
Thunderstorm Coverage	60%
Minimum Temperature	24°C – 27°C
Maximum Temperature	35°C – 37°C
Wind Speed	10-20 km/h

Phuket and Krabi Could See Rough Sea Conditions

Thailand’s Andaman coast remains under close observation as thunderstorms are expected across several southern provinces.

Heavy rain is forecast in parts of Krabi, Trang, and Satun, while Phuket may experience periods of thunderstorms and stronger winds.

The Meteorological Department says wave heights in the upper Andaman Sea could reach 1 to 2 metres and exceed 2 metres during thunderstorms.

Marine Conditions

Area	Wave Height
Upper Andaman Sea	1-2 Metres
Lower Andaman Sea	Around 1 Metre
Gulf of Thailand	Around 1 Metre
Thunderstorm Areas	Above 2 Metres

Mariners and tour operators have been advised to navigate carefully and avoid sailing during severe weather conditions.

Northern Thailand Faces Heavy Rainfall

Northern Thailand is expected to experience some of the most significant rainfall over the next 24 hours.

Heavy rain warnings have been issued for:

• Chiang Mai
• Chiang Rai
• Mae Hong Son
• Nan
• Tak

These provinces remain popular with both domestic and international travelers. Authorities have warned of possible flash flooding, particularly in mountainous areas and locations near rivers and streams.

Tourists visiting national parks, trekking routes, or rural attractions should stay updated on local weather conditions before traveling.

Eastern Thailand Also Under Weather Alert

The eastern provinces of Chanthaburi and Trat are forecast to receive heavy rainfall.

Both destinations attract travelers heading to islands, beaches, and coastal resorts. While tourism activities are expected to continue, visitors should prepare for temporary disruptions caused by thunderstorms and localized flooding.

Weather-related delays are possible for ferry services and outdoor excursions.

Advice for Indian Travelers Visiting Thailand

Thailand remains one of the most popular international destinations for Indian tourists, with direct flights arriving daily from Delhi, Mumbai, Chennai, Bangalore, Hyderabad, Kolkata, and Ahmedabad.

Travelers currently in Thailand or planning to arrive in the coming days should:

• Carry rain jackets or umbrellas.
• Monitor local weather alerts.
• Allow extra travel time for airport transfers.
• Avoid swimming during thunderstorms.
• Follow instructions from local authorities.

Indian travelers visiting Phuket, Krabi, Chiang Mai, Bangkok, and Koh Samui should remain aware of changing weather conditions throughout the week.

Why Is Thailand Experiencing Heavy Rain?

Meteorologists say the weather is being driven by two main factors:

1. A moderate southwest monsoon covering Thailand, the Andaman Sea, and the Gulf of Thailand.
2. A low-pressure system located over northern Vietnam.

The combination is drawing moisture into Thailand, increasing the likelihood of widespread thunderstorms and heavy rainfall.

June typically marks the beginning of Thailand’s wetter season, with rainfall becoming more frequent across many parts of the country.

FAQs – Thailand Weather Warning

Which parts of Thailand are expected to see heavy rain?

Heavy rainfall is forecast in northern provinces such as Chiang Mai, Chiang Rai, Mae Hong Son, Nan, and Tak, as well as eastern and southern provinces including Trat, Krabi, Trang, and Satun.

Is Bangkok affected by the weather warning?

Yes. Thunderstorms are expected across approximately 60% of Bangkok and surrounding areas.

Should tourists cancel trips to Thailand?

No. Tourism activities continue as normal, but travelers should monitor local weather forecasts and allow flexibility in their plans.

Final Word

The latest Thailand Weather Warning highlights the arrival of widespread thunderstorms and heavy rain across several parts of the country, including Bangkok, Phuket, Chiang Mai, and Krabi. While travel remains possible, visitors should prepare for changing weather conditions, occasional transportation delays, and rough sea conditions in some coastal areas.

For Indian travelers currently in Thailand or planning a trip in the coming days, staying informed and following local weather advisories will help ensure a safer and more comfortable journey.

Also Read:

• Thailand Travel 2026 New Rules
• Thailand Visa Changes: Indians Unlikely to Be Deterred, Says Travel Industry
• Phuket Airport Auto Gates: Faster Immigration for International Arrivals

Official Source:

• Thai Meteorological Department (TMD)
• Nation Thailand