Weather in Thailand in July 2026: First-Timers’ Travel Tips

July is hot and sticky, with temperatures around 25–33°C (77–91°F) and humidity near 80%.

It's the heart of the rainy season, but that doesn't mean your trip will be ruined. Rainfall varies a lot by region—from around 100 mm in drier spots like Ayutthaya to over 500 mm in Trat.

Rain usually comes as short, heavy bursts, while a tropical storm may bring a few days of steady rain once or twice a month.

If you don't mind a mix of sun, cloud, and showers, July has perks: lower prices, fewer crowds, and lush green scenery. Just don't expect a run of guaranteed sunny days—whether you're on the beach, in the city, or up north.

What's the Weather Like in Thailand in July?

If you're wondering where to find the driest weather, Central Thailand leads the pack, with the North and the Gulf Coast islands close behind. The wettest spots are the Andaman Coast (Phuket, Krabi, and Koh Lanta) and Trat near Cambodia.

Southern Thailand-West Coast: Phuket & the Andaman Coast

Most destinations on Thailand's West Coast, like Phuket, see over 230 mm of rainfall in July. Khao Sok, Koh Lanta, and Krabi are slightly drier.

Frequent showers, rough seas, and strong waves make island hopping kind of a gamble. Koh Lipe? Rough seas limit access; Pakbara Pier is your only option. And the Similan and Surin Islands? Closed for conservation.

Instead, focus on Phuket's cultural attractions, Krabi's dramatic landscapes, or Khao Sok's rainforest lakes. If you don't mind occasional storms, Phuket and Krabi offer low-season charm: empty beaches, great deals, and moody tropical vibes.

Southern Thailand-East Coast: Koh Samui, Koh Phangan, Koh Tao

The Samui Archipelago is the best island destination in Thailand in July.

• Koh Samui: With just about 128 mm of rain in July, Samui is the driest of the three islands. Sun, sand, and snorkeling remain fully enjoyable, and short boat trips are usually smooth.
• Koh Phangan: Rainfall is slightly higher, but seas are generally calmer than on the Andaman side. Snorkeling and swimming remain easy on sheltered beaches.
• Koh Tao: Famous for diving, but July brings choppier waters and heavier rainfall, similar to Phuket. Some dive spots may close temporarily, and visibility can drop, so plan accordingly.

Bangkok & Central Thailand

Even in the rainy season of July, Bangkok and Central Thailand remain very travel-friendly. Days are warm at about 33°C (91°F), but mornings and evenings feel pleasant.

Rainfall is among the lightest in the country, around 109 mm on average, so sightseeing rarely stops—temples, street food tours, river cruises, and nightlife continue as usual.

If you're hoping to add a beach escape, Hua Hin and Pattaya are the most practical coastal escapes, slightly cooler (by 1–2°C) and close to Bangkok. Avoid Trat—rainfall often exceeds 500 mm, and the sea can be rough and murky.

From our experience, most days saw just a few night showers, gone by morning. Sea views weren't picture-perfect due to overcast skies, though.

Chiang Mai & Northern Thailand

Northern Thailand is the coolest region at this time, with average daytime highs around 31°C (88°F), dropping to about 30°C (86°F) in higher areas like Chiang Rai and Pai.

Rainfall is generally moderate, often falling as short afternoon showers, though strong storms—such as Typhoon Vipa on July 24—can bring continuous rain and occasional flooding. Chiang Mai, Lampang, and Sukhothai are on the drier side.

Adventure treks and cave explorations often pause for safety, but cultural experiences, elephant sanctuaries, rice terrace visits, and waterfalls remain highlights. July is also one of the most photogenic months, with misty mountains and brilliant green rice fields.

Best Places to Go in Thailand in July

Wondering about the best places to go in Thailand in July? If you're picking just three with lighter rain, choose Bangkok for rainproof city highlights, Chiang Mai for culture and green landscapes, and Samui for the most reliable beach days.

Things to do in Koh Samui in July

• Sunny days: Relax on Chaweng or Lamai beaches, plan a romantic sunset dinner by the sea, or take the family swimming and snorkeling around Ang Thong Marine Park.
• Rainy hours: Book a private spa session, try a yoga retreat, or spend a lazy afternoon in one of the island's stylish cafés.

Note: July–August is the island's "second high season," so booking early is recommended.

Things to do in Bangkok in July

• Sunny days: Explore the Grand Palace and Wat Arun, wander outdoor markets like Damnoen Saduak Floating Market and the Railway Market, enjoy a Chinatown street food tour, or book a rooftop sunset dinner.
• Rainy days: Take a longtail boat ride along the Chao Phraya River, retreat to world-class malls, or visit kid-friendly spots like Museum Siam. Thai boxing matches are also a fun indoor option.
• Special note: Around July 28, the King's Birthday celebrations bring parades, light shows, and cultural performances across the city.

Things to do in Chiang Mai in July

• Sunny days: Visit Doi Suthep Temple, meet elephants in ethical sanctuaries, or cool off at the Sticky Waterfall. Families and active travelers can also head to Doi Inthanon for hikes and panoramic views.
• Rainy days: Take a cooking class with a local family, explore Chiang Mai's craft shops and cafés, or chat with monks at Wat Suan Dok.

Insider tip: Avoid staying in the Old City or near the Ping River during heavy rains; higher-ground areas like Nimmanhaemin Road are more convenient and flood-free.

For a more detailed plan of a first trip to Thailand, you can explore our customizable itinerary or get more tips on planning a trip to Thailand.

Is It Crowded in Thailand in July?

July is a mid-season month. You won't face the packed crowds of December or January, though it isn't empty either. Thanks to school holidays in Asia and Europe, Bangkok, Chiang Mai, and the Samui side feel livelier. In contrast, Phuket and Krabi are quieter, with wide beaches and fewer tour groups because of the rain.

Prices follow the same pattern: mid-season rates are lower than winter months, with plenty of good deals still around.

Clothes to Wear in July

Shorts, skirts, T-shirts, light trousers, and hats are recommended to pack for your trip to Thailand in July.

Since rain showers are common, bring a compact umbrella, a light raincoat, and water-friendly shoes or sandals. Don't forget mosquito repellent if you're visiting jungles or mountains.

Average Temperatures and Rainfall in Thai Cities in July

FAQs

Is July a good time to visit Thailand?

Yes—if you plan smart. Samui is sunny, Bangkok thrives rain or shine, and Chiang Mai is gorgeous in green.

Where isn't it rainy in July?

Nowhere is totally dry, but the Gulf islands (Samui side) are far drier than Phuket.

What's the rainiest month?

Usually, September, with August not far behind.

Is it expensive?

Not really—except Samui, which is in demand. Elsewhere, July is one of the best months for luxury deals.

Which is better: June, July, or August?

• Most reliable beach days → June
• Quieter, green landscapes, city and culture flexibility → June or July
• Lowest crowds and best deals (heavier rain okay) → August

Festivals in July?

The Ubon Ratchathani Candle Festival (July 17–23) features free parades of wax sculptures, and some temples offer blessing activities.

Suggested Itineraries for July

If you're planning a trip in June, the best approach is to build around the Gulf islands—then add a mix of culture and city life depending on your interests. Here are three sample itineraries that work well this month:

7–10 Days · Island Focus

• Bangkok (2 nights): Food, temples, and a splash of nightlife.
• Koh Samui (5–7 nights): Relax on calm beaches, take day trips to Koh Phangan or Ang Thong Marine Park, and leave buffer days for both excursions and pure downtime.

Feel free to ask us for a quote based on your interests.

10–12 Days · Culture + Nature

• Bangkok (3 nights): City highlights and markets.
• Kanchanaburi (1–2 nights): Bridge over the River Kwai, Death Railway, and Erawan Falls
• Chiang Mai (3 nights): Temples, cooking classes, elephant sanctuaries, and light trekking.
• Koh Samui (3 nights): Sun and sea to round off the trip.

Check out the sample itinerary and get your personalized one!

Multi-Country Suggestion

• A 19-day Highlights of Thailand, Cambodia, and Vietnam tour gives an easy one-stop way to see the region's classics during the off-season.

Monthly Weather and Travel Information for Thailand

Learn about the weather in Thailand for 12 months and find out the best places to visit each month.