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Coldest sea in Thailand in April

89 coastal locations in Thailand ranked by typical April sea temperature, coldest first. Region-wide average in April: 30.4°C.

Coldest in April

Narathiwat

29.9°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.

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 coldest Thailand locations in April

Sorted by typical April mean from a decade of daily readings, coldest first. Click any place for the full location page.

# 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
11 Chaweng Beach 30.2°C
12 Choeng Mon Beach 30.2°C
13 Koh Phangan 30.2°C
14 Koh Samui 30.2°C
15 Mae Nam Beach 30.2°C
16 Hua Hin 30.2°C
17 Khao Lak 30.3°C
18 Similan Islands 30.3°C
19 Banana Beach 30.3°C
20 Cape Panwa 30.3°C
21 Kalim Beach 30.3°C
22 Kamala Beach 30.3°C
23 Karon Beach 30.3°C
24 Kata Beach 30.3°C
25 Lamai Beach 30.3°C
Show 25 more ▸
26 Nai Harn Beach 30.3°C
27 Patong Beach 30.3°C
28 Phuket 30.3°C
29 Rawai Beach 30.3°C
30 Surin Beach 30.3°C
31 Surin Islands 30.3°C
32 Ko Miang Phangnga 30.3°C
33 Ko Surin Phang-nga 30.3°C
34 Ko Mak 30.3°C
35 Ko Wai 30.3°C
36 Map Ta Phut 30.3°C
37 Lipa Noi 30.3°C
38 Mae Nam 30.3°C
39 Ao Sattahip Chonburi 30.4°C
40 Chong Khram Ranong 30.4°C
41 Ko Taphao Noi (Phuket) Chang Wat Phuket 30.4°C
42 Sattahip 30.4°C
43 Rayong 30.4°C
44 Samet 30.4°C
45 Taling Ngam Beach 30.4°C
46 Ko Butang Satun 30.5°C
47 Ko Chang Tai 30.5°C
48 Ko Chang 30.5°C
49 Laem Ngop 30.5°C
50 Pak Nam Ranong Chang Wat Ranong 30.5°C

Warmest 10 in Thailand in April

Same data the other way. The warmest spots for the same month.

# 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

More on this region