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Warmest sea in Thailand in July

89 coastal locations in Thailand ranked by their typical July sea temperature. Region-wide average in July: 29.9°C. The top of the list is where to find the warmest swimming this month.

Warmest in July

Mae Klong

30.4°C July mean in Thailand

Regional July average

29.9°C

across all 89 coastal locations in Thailand

Vs annual mean

+0.4°C

above the year-round regional average

What the Thailand sea feels like in July

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

Thailand monthly average 28.1°C to 30.7°C
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  • Warmest month May 30.7°C
  • Coldest month January 28.1°C
  • Annual mean 29.5°C
  • Months above 20°C 12 of 12

Where July fits in the year

July sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Thailand month rankings:

Thailand sea temperature map (live)

The map shows today's latest reading at every Thailand location. The list below is based on the typical July mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Thailand locations in July

Sorted by the typical July mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location July mean
1 Mae Klong Chang Wat Samut Songkhram 30.4°C
2 Bangkok Bar Central Thailand 30.3°C
3 Ko Koi Noi Satun 30.3°C
4 Langkawi Chang Wat Satun 30.3°C
5 Ko Butang Satun 30.3°C
6 Ko Lela Satun 30.3°C
7 Ko Lipe 30.3°C
8 Ko Don Ao Nang 30.2°C
9 Bangkok 30.2°C
10 Phra Pradaeng 30.2°C
11 Kantang 30.2°C
12 Ko Si Chang 30.2°C
13 Pak Nam Trang Chang Wat Trang 30.2°C
14 Si Racha 30.2°C
15 Bang Lamung 30.2°C
16 Jomtien Beach 30.2°C
17 Ko Lan 30.2°C
18 Ko Phetra Malacca 30.2°C
19 Pattani 30.2°C
20 Pattaya 30.2°C
21 Yaring 30.2°C
22 Narathiwat 30.1°C
23 Tak Bai 30.1°C
24 Ao Nang (Krabi) Chang Wat Krabi 30.1°C
25 Sattahip 30.1°C
Show 25 more ▸
26 Ko Lanta 30.1°C
27 Bangtao Beach 30.0°C
28 Mai Khao Beach 30.0°C
29 Nai Yang Beach 30.0°C
30 Hua Hin 30.0°C
31 Ko Taphao Noi (Phuket) Chang Wat Phuket 30.0°C
32 Ao Nang 30.0°C
33 Ao Sattahip Chonburi 30.0°C
34 Ban Ao Nang 30.0°C
35 Chong Khram Ranong 30.0°C
36 Ko Phi Phi Don 30.0°C
37 Krabi 30.0°C
38 Phi Phi Islands 30.0°C
39 Railay Beach 30.0°C
40 Khanom Beach 30.0°C
41 Ko Prap Surat Thani Province 30.0°C
42 Ko Yao 30.0°C
43 Banana Beach 29.9°C
44 Lamai Beach 29.9°C
45 Taling Ngam Beach 29.9°C
46 Cape Panwa 29.9°C
47 Kalim Beach 29.9°C
48 Kamala Beach 29.9°C
49 Karon Beach 29.9°C
50 Kata Beach 29.9°C

Coldest 10 in Thailand in July

Same data the other way. Helpful if you want to know which Thailand coasts to avoid for swimming in July.

# Location July mean
1 Ban Mai 28.9°C
2 Ban Talat Yai 28.9°C
3 Ranong 29.3°C
4 Surin Islands 29.3°C
5 Pak Nam Ranong Chang Wat Ranong 29.4°C
6 Similan Islands 29.4°C
7 Ko Surin Phang-nga 29.4°C
8 Prachuap Khiri Khan 29.5°C
9 Chang Ko Phra Thong Phang-nga 29.5°C
10 Ko Chang Tai 29.5°C

More on this region