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Warmest sea in Thailand in April

89 coastal locations in Thailand ranked by their typical April sea temperature. Region-wide average in April: 30.4°C. The top of the list is where to find the warmest swimming this month.

Warmest in April

Pak Nam Trang

30.9°C April mean in Thailand

Regional April average

30.4°C

across all 89 coastal locations in Thailand

Vs annual mean

+1.0°C

above the year-round regional average

What the Thailand sea feels like in April

Water at this temperature is very warm and you should look to bathe only. Avoid any kind of strenuous swimming as there is a real risk of heat stroke at this temperature.

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 April fits in the year

April 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 April 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 April

Sorted by the typical April 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 April mean
1 Pak Nam Trang Chang Wat Trang 30.9°C
2 Ko Prap Surat Thani Province 30.9°C
3 Ao Muang Trat Chang Wat Trat 30.9°C
4 Kantang 30.9°C
5 Ko Don Ao Nang 30.8°C
6 Ko Phetra Malacca 30.8°C
7 Ko Koi Noi Satun 30.8°C
8 Langkawi Chang Wat Satun 30.8°C
9 Ao Nang (Krabi) Chang Wat Krabi 30.7°C
10 Lang Suan Chumphon 30.7°C
11 Ko Lela Satun 30.7°C
12 Ko Kut 30.7°C
13 Chong Samet Chumphon 30.6°C
14 Ko Lanta 30.6°C
15 Mae Klong Chang Wat Samut Songkhram 30.6°C
16 Ao Nang 30.6°C
17 Ban Ao Nang 30.6°C
18 Ko Phi Phi Don 30.6°C
19 Krabi 30.6°C
20 Phi Phi Islands 30.6°C
21 Railay Beach 30.6°C
22 Bangtao Beach 30.6°C
23 Mai Khao Beach 30.6°C
24 Nai Yang Beach 30.6°C
25 Bangkok Bar Central Thailand 30.6°C
Show 25 more ▸
26 Chang Ko Phra Thong Phang-nga 30.6°C
27 Ko Si Chang 30.6°C
28 Si Racha 30.6°C
29 Bangkok 30.5°C
30 Ko Yao 30.5°C
31 Phra Pradaeng 30.5°C
32 Khanom Beach 30.5°C
33 Ko Lipe 30.5°C
34 Bang Lamung 30.5°C
35 Jomtien Beach 30.5°C
36 Ko Lan 30.5°C
37 Laem Sing 30.5°C
38 Pattaya 30.5°C
39 Ranong 30.5°C
40 Ko Butang Satun 30.5°C
41 Ko Chang Tai 30.5°C
42 Ko Chang 30.5°C
43 Laem Ngop 30.5°C
44 Pak Nam Ranong Chang Wat Ranong 30.5°C
45 Taling Ngam Beach 30.4°C
46 Rayong 30.4°C
47 Samet 30.4°C
48 Sattahip 30.4°C
49 Ko Taphao Noi (Phuket) Chang Wat Phuket 30.4°C
50 Ao Sattahip Chonburi 30.4°C

Coldest 10 in Thailand in April

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

# Location April mean
1 Narathiwat 29.9°C
2 Tak Bai 29.9°C
3 Pattani 29.9°C
4 Yaring 29.9°C
5 Ko Lak (Prachuap Khiri Khan) Prachuap Khiri Khan 30.1°C
6 Prachuap Khiri Khan 30.1°C
7 Ban Mai 30.1°C
8 Ban Talat Yai 30.1°C
9 Ko Tao 30.1°C
10 Bo Phut Beach 30.2°C

More on this region