Thailand in July is part of the rainy season, so that you can expect warm days, high humidity, and regular rain showers. The weather follows a pattern: it is often dry in the morning with heavier rain in the late afternoon or evening. Whether walking through Bangkok or spending time near the coast, you'll notice a mix of sunshine and sudden downpours.

Travelling this time of year has its ups and downs. It's less busy than the high season, so that you might get better deals on flights and hotels, and popular spots are usually less crowded. The countryside looks greener thanks to the rain, which is nice if you’re into nature and outdoor trips. Now let’s break down July’s weather by region, provide helpful packing tips, and give you ideas for where to go based on the climate.

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What is the weather like in Thailand in July?

July is firmly within Thailand’s southwest monsoon season. Expect warm-to-hot temperatures, high humidity, and frequent rainfall. The average daytime high is between 86 and 95°F, while nights remain warm, averaging around 77°F. Humidity ranges from 75–85%, making the air feel thicker and hotter than the actual temperature.

July's rainfall is significant. Many regions receive 6 to 8 inches (150–200 mm) of rain, often across 12–18 days. However, showers usually come in short, intense bursts, often during late afternoons or evenings. The mornings often start clear or partly cloudy, giving you time to explore before the rain sets in.

City-Wise Weather and Temperatures

While the general climate is rainy across Thailand in July, conditions can differ from one destination to another. Here’s a breakdown of the weather in popular Thai destinations during July:

• Bangkok (Central Thailand): Average temperatures range from the upper 70s to low 90s °F (around 77–91 °F). Days are hot and very humid, and nights are warm. Bangkok typically sees about 6–7 inches of rain in July, with roughly 12–15 days of rainfall. Downpours in the capital can be strong but usually don’t last all day. Between storms, you’ll get pockets of sunshine or at least dry cloudy periods.

• Chiang Mai (Northern Thailand): In the north, Chiang Mai’s July temperatures are similar to Bangkok’s, roughly mid-70s at night up to around 90°F by day (about 75–90 °F). Being farther inland and slightly higher, Chiang Mai can feel a touch cooler in the evenings. However, it receives a lot of rain in July, approximately 6 inches total over about 18 rainy days on average. Afternoons often bring thunderstorms. The surrounding mountains are misty and green, and while the rain can be heavy, it makes the northern hills lush and scenic.

• Phuket (Andaman Coast, South-West): Phuket is hot (mid-70s to around 90°F), similar to the rest of the country, but notably extremely wet in July. It’s one of the rainiest places this time of year, recent climate data shows Phuket getting about 284 mm of rainfall in July, which is roughly 11 inches of rain, spread across -20 days of the month. In other words, it rains on two-thirds of the days in July.

• Krabi (Andaman Coast, South-West): Krabi province, home to popular spots like Ao Nang and Railay Beach, also sees heavy monsoon rains in July. Temperatures are about mid-70s to low-90s °F (similar to Phuket). Rainfall is high, some records indicate around 100 mm (about 4 inches) for Krabi Town, but most travel guides and past averages put it much higher (often 250–300 mm or 10–12 inches for the month). 

• Koh Samui (Gulf of Thailand, South-East): In contrast to the Andaman side, Koh Samui and its neighbouring islands (Koh Phangan, Koh Tao) enjoy a relatively drier “mini-season” in July. On average, it’s still warm, about the upper 70s to low 90s°F and humid, but the rainfall is about 5 inches over 14 days. That means you’ll still get rainy days and plenty of sunny or partly sunny days in between.

• Pattaya (Eastern Gulf Coast): On the eastern coast, not far from Bangkok, weather in Pattaya, Thailand, in July is typically hot and humid, with temperatures ranging from the mid-70s to the high 80s°F. The city experiences a monsoon pattern similar to that of central Thailand. Rainfall during July is moderate, about 87 mm (3.5 inches) spread over roughly 10-12 days, making it slightly drier than Bangkok or Chiang Mai.

Where to visit in July based on the weather?

Here are the best places where you can experience all that Thailand has to offer in July: 

Best for Beaches:

• Koh Samui, Koh Phangan, Koh Tao (Gulf Coast): These islands receive less rain in July and are great for swimming, snorkelling, and diving.

• Hua Hin and Koh Samet: These beach areas are drier near Bangkok even during monsoon months.

Best for Nature and Scenery:

• Chiang Mai & Chiang Rai: Northern Thailand is lush, green, and misty. It is perfect for mountain views and waterfalls, though rain is frequent.

• Khao Sok National Park: A scenic jungle paradise in the south with dramatic limestone cliffs and rainforest trekking.

Best for City Travel:

• Bangkok: Hot and steamy, but manageable with indoor options like museums and shopping malls to dodge the rain.

• Chiang Mai: This city is ideal for cultural activities like cooking classes, temple visits, and spa sessions when it’s raining.

What to Pack for Thailand in July?

Smart packing is key to staying dry, cool, and comfortable. Here's what to include:

Clothing:

• Light, breathable fabrics (cotton, linen)

• Quick-dry shirts and pants

• Loose-fitting outfits for air circulation

• Light sweater or shawl for indoor AC

Rain Gear:

• Quality rain poncho or waterproof jacket

• Compact umbrella

• Waterproof bags or zip-locks for electronics

Footwear:

• Waterproof sandals or quick-dry walking shoes

• Flip-flops for beach and casual wear

• Shoes with a good grip for slippery paths

Essentials:

• High-SPF sunscreen (yes, even during rain)

• Insect repellent (DEET or picaridin-based)

• Quick-dry towel

• Reusable water bottle

• Sunglasses and a wide-brimmed hat

• Lightweight daypack

Things to Keep in Mind

• Weather Disruptions: Flights and ferries may face delays. Plan buffer time and keep your itinerary flexible.

• Monsoon Safety: Respect red flags at beaches and avoid hiking during heavy rains. Don't push for boat tours in bad weather.

• Health Tips: Stay hydrated, use mosquito repellent, and wear breathable clothes. Watch for signs of heat exhaustion.

• Regional Differences: The east coast (Gulf) is drier than the west coast (Andaman). If rain becomes persistent in one region, adjust your plans.

• Festivals: July is home to Thailand's Candle Festival (early Buddhist Lent) in Ubon Ratchathani, a beautiful cultural experience worth seeing.

Why is July the perfect month to experience Thailand differently?

Thailand in July is not for those chasing endless sunshine,  but it’s perfect for the flexible, curious traveller. With fewer crowds, lush scenery, and better prices, July can be one of the most rewarding months to explore the country. Whether you're sipping mango smoothies under a palm tree, navigating rainy alleyways in Bangkok, or trekking through jungle mists in the north, there's a quiet magic to Thailand's green season.

Bring the right gear, embrace the unexpected, and you’ll discover a side of Thailand most tourists miss.