Month 7 of 12
July falls in the southwest monsoon rainy season (TMD); rainfall is abundant on the southern west coast (LDD). Regions that score 'good' on rainfall in our overview: Koh Samui, Koh Phangan, Koh Tao. Less suitable weather-wise: Similan, Surin and Koh Rok (marine parks); Ranong (Koh Phayam); Chanthaburi; and Trat, Koh Chang, Koh Kood, Koh Mak. Average rainfall ranges from 90 mm (Hua Hin) to 1024 mm (Trat). Below you will find 8 beaches, 8 islands, 8 festivals and holidays, 5 temples and 8 birds for July.
July falls in the southwest monsoon rainy season (TMD); rainfall is abundant on the southern west coast (LDD). Average rainfall: Phuket 258 mm, Krabi 201 mm, Koh Samui 117 mm, Hua Hin 90 mm, Pattaya 104 mm, Trat 1024 mm.
Indication: the weather varies from year to year.
Average monthly rain per weather station; the bar runs from 0 to 1024 mm (the wettest month in this overview). Colour = our score for that region.
Not recommended🌊 rough sea
Very wet: Phuket (Mueang) 258 mm on 19.6 rainy days (monthly average). Sea: rough sea, red flags possible (SW monsoon May-Oct). Similan and Surin are closed to tourism 16 May to 14 October (2026: reopened 15 Oct); Koh Rok (Mu Ko Lanta NP) is also closed in the monsoon season.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th, nationthailand.com, siamtourandrealty.com, tatnews.org
Fair🌊 rough sea
Changeable: Phuket (Mueang) 258 mm on 19.6 rainy days; Krabi 201 mm on 18.3 rainy days (monthly average). Sea: rough sea, red flags possible (SW monsoon May-Oct). DMCR lists Phuket beaches (e.g. Kata, Karon, Patong, Kamala, Nai Harn) as high-risk for big waves and rip currents May to October.
Sources: en.wikipedia.org, en.wikipedia.org, en.sme.go.th, www1.ldd.go.th, warning.dmcr.go.th, tatnews.org
Not recommended🌊 rough sea
Very wet: Ranong 706 mm on 23 rainy days (monthly average). Sea: rough sea, red flags possible (SW monsoon May-Oct).
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Fair🌊 rough sea
Changeable: Satun 230 mm on 14.1 rainy days (monthly average). Sea: rough sea, red flags possible (SW monsoon May-Oct). In Tarutao National Marine Park the Adang-Rawi islands and dive sites are closed 1 June to 30 September (DNP 2026 notice); Koh Tarutao and Koh Lipe stay open. Fewer boats from Pak Bara 1 June to 15 Oct.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th, nationthailand.com, thainationalparks.com, ploysiamspeedboat.com
Good🌊 calm sea
Relatively dry: Ko Samui 117 mm on 10.7 rainy days (monthly average). Sea: sea mostly calm.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Fair🌊 calm sea
Changeable: Chumphon 195 mm on 16.5 rainy days (monthly average). Sea: sea mostly calm.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Fair🌊 variable sea
Changeable: Hua Hin 90 mm on 9.7 rainy days; Prachuap Khiri Khan 118 mm on 12.5 rainy days (monthly average). Sea: changeable sea in the wet season.
Sources: en.wikipedia.org, en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Fair🌊 variable sea
Changeable: Pattaya 104 mm on 9.5 rainy days; Chonburi 144 mm on 11.4 rainy days; Sattahip 112 mm on 9.8 rainy days (monthly average). Sea: changeable sea in the wet season.
Sources: en.wikipedia.org, en.wikipedia.org, en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Fair🌊 variable sea
Changeable: Rayong 176 mm on 11 rainy days (monthly average). Sea: changeable sea in the wet season.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Not recommended🌊 rough sea
Very wet: Chanthaburi 511 mm on 21.4 rainy days (monthly average). Sea: rougher sea and fewer boat services in the wet season. No Chanthaburi beaches or islands in our list; climate only.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Not recommended🌊 rough sea
Very wet: Trat 1024 mm on 24.6 rainy days (monthly average). Sea: rougher sea and fewer boat services in the wet season. Koh Mak and Koh Kood have fewer boats in the wet season; speedboats often stop. Trat is one of the wettest provinces in Thailand (>4,000 mm a year, LDD).
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th, visit-thailand.org
Fair
Changeable: Bangkok 190 mm on 14.1 rainy days (monthly average). Bangkok climate used as a proxy for Koh Kret.
Sources: en.wikipedia.org, en.sme.go.th, www1.ldd.go.th
Regions scored not recommended:
Beaches at their best in Julyℹ️ The season score is based on average rainfall and the climate per region, not on a weather forecast. It is not a guarantee: the weather varies from year to year.
Festivals and holidays in July8 of the 8 festivals in our festival list that can fall in July.
📍 Ratchadamnoen Avenue and Grand Palace, Bangkok National
📍 Phra Pathom Chedi, Nakhon Pathom National
📍 Ubon Ratchathani (Candle Festival), Thung Si Mueang National
📍 Wat Phra Phutthabat, Saraburi
📍 Thung Si Mueang, Ubon Ratchathani
📍 Pa Hin Ngam National Park, Chaiyaphum
📍 Haad Rin, Koh Phangan
📍 Koh Samui (varying venues)
Temples to visit in JulyBuddha Footprint Temple
📍 Phra Phutthabat, Saraburi
🎉 Linked festival in July: Tak Bat Dok Mai (Flower Alms, Saraburi).
Jungle Temple
📍 Doi Suthep, Chiang Mai
Temple of a Million Bottles
📍 Khun Han, Sisaket
Phra Phuttha Ming Mongkhon
📍 Nakkerd Hill, Phuket
📍 Nakhon Pathom
🎉 Linked festival in July: Asarnha Bucha.
Birds to see in JulyIn our bird guide, 5 species have July in their best season, of which 0 are winter visitors or passage migrants; 56 species are present year-round. This follows from the best season listed for each species.
Hotels at beaches and islands that are good in JulyHotels listed on our beach and island pages, at a place that scores well this month.
€€ at Freedom Beach (Koh Tao)
⏰ Check whether the hotel is open this month.
€ at Lamai Beach
⏰ Check whether the hotel is open this month.
€€€ at Thong Nai Pan Noi
⏰ Check whether the hotel is open this month.
€€ at Chaweng Beach
⏰ Check whether the hotel is open this month.
€ at Haad Rin Nok (Sunrise Beach)
⏰ Check whether the hotel is open this month.
€€€ at Choeng Mon Beach
⏰ Check whether the hotel is open this month.
July falls in the southwest monsoon rainy season (TMD); rainfall is abundant on the southern west coast (LDD). Average rainfall: Phuket 258 mm, Krabi 201 mm, Koh Samui 117 mm, Hua Hin 90 mm, Pattaya 104 mm, Trat 1024 mm. Indication: the weather varies from year to year.
Based on average rainfall: Koh Samui, Koh Phangan, Koh Tao. Good beaches this month include Sairee Beach, Silver Beach (Crystal Bay / Thong Ta Khian) and Chaweng Beach.
Examples: King's Birthday (28 July 2027); Asarnha Bucha (18 July 2027); Khao Phansa (start of Buddhist Lent) (19 July 2027); Tak Bat Dok Mai (Flower Alms, Saraburi) (expected mid-July 2027); Ubon Ratchathani Candle Festival (expected mid-July 2027). Many festivals follow the lunar calendar or are set locally each year, so dates shift.
Islands at their best in July