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Warmest sea in Thailand in March

89 coastal locations in Thailand ranked by their typical March sea temperature. Region-wide average in March: 29.4°C. The top of the list is where to find the warmest swimming this month.

Warmest in March

Kantang

29.8°C March mean in Thailand

Regional March average

29.4°C

across all 89 coastal locations in Thailand

Vs annual mean

-0.1°C

below the year-round regional average

What the Thailand sea feels like in March

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 March fits in the year

March 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 March 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 March

Sorted by the typical March 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 March mean
1 Kantang 29.8°C
2 Ao Muang Trat Chang Wat Trat 29.7°C
3 Pak Nam Trang Chang Wat Trang 29.7°C
4 Ko Don Ao Nang 29.7°C
5 Ko Kut 29.7°C
6 Ko Lanta 29.7°C
7 Ko Phetra Malacca 29.7°C
8 Ko Lipe 29.6°C
9 Khao Lak 29.6°C
10 Ko Lela Satun 29.6°C
11 Chang Ko Phra Thong Phang-nga 29.6°C
12 Ao Nang 29.6°C
13 Ban Ao Nang 29.6°C
14 Bangtao Beach 29.6°C
15 Ko Butang Satun 29.6°C
16 Ko Koi Noi Satun 29.6°C
17 Ko Miang Phangnga 29.6°C
18 Ko Phi Phi Don 29.6°C
19 Krabi 29.6°C
20 Langkawi Chang Wat Satun 29.6°C
21 Mai Khao Beach 29.6°C
22 Nai Yang Beach 29.6°C
23 Phi Phi Islands 29.6°C
24 Railay Beach 29.6°C
25 Similan Islands 29.6°C
Show 25 more ▸
26 Ko Yao 29.6°C
27 Ao Nang (Krabi) Chang Wat Krabi 29.5°C
28 Banana Beach 29.5°C
29 Cape Panwa 29.5°C
30 Kalim Beach 29.5°C
31 Kamala Beach 29.5°C
32 Karon Beach 29.5°C
33 Kata Beach 29.5°C
34 Nai Harn Beach 29.5°C
35 Patong Beach 29.5°C
36 Phuket 29.5°C
37 Rawai Beach 29.5°C
38 Surin Beach 29.5°C
39 Ranong 29.5°C
40 Ko Prap Surat Thani Province 29.5°C
41 Ko Surin Phang-nga 29.5°C
42 Ko Taphao Noi (Phuket) Chang Wat Phuket 29.5°C
43 Ko Chang Tai 29.4°C
44 Ko Chang 29.4°C
45 Laem Ngop 29.4°C
46 Surin Islands 29.4°C
47 Chong Samet Chumphon 29.4°C
48 Pak Nam Ranong Chang Wat Ranong 29.4°C
49 Ko Si Chang 29.4°C
50 Laem Sing 29.4°C

Coldest 10 in Thailand in March

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

# Location March mean
1 Ban Mai 28.6°C
2 Ban Talat Yai 28.6°C
3 Tak Bai 28.8°C
4 Narathiwat 28.8°C
5 Pattani 28.8°C
6 Yaring 28.8°C
7 Ko Lak (Prachuap Khiri Khan) Prachuap Khiri Khan 28.9°C
8 Bo Phut Beach 29.0°C
9 Chaweng Beach 29.0°C
10 Choeng Mon Beach 29.0°C

More on this region