In May warmest sea in Thailand is usually observed in the following locations: Samet, Trat, Rayong.
Table below shows the average sea water temperature for marine resorts of Thailand in May for the last three years.
| Place name | May 2025 | May 2024 | May 2023 |
|---|---|---|---|
| Samet | 88.0°F | 89.0°F | 88.1°F |
| Trat | 87.9°F | 89.3°F | 88.7°F |
| Rayong | 87.9°F | 89.1°F | 88.3°F |
| Ko Wai | 87.8°F | 89.4°F | 88.2°F |
| Ko Mak | 87.8°F | 89.2°F | 88.1°F |
| Koh Kood | 87.7°F | 89.2°F | 88.1°F |
| Koh Chang | 87.7°F | 89.7°F | 88.4°F |
| Hua Hin | 87.7°F | 88.6°F | 88.4°F |
| Cha-am | 87.6°F | 88.9°F | 88.6°F |
| Hat Yai | 87.4°F | 89.5°F | 87.9°F |
| Bangkok | 87.3°F | 88.5°F | 88.1°F |
| Jomtien | 87.3°F | 88.8°F | 87.9°F |
| Koh Lan | 87.3°F | 88.8°F | 87.9°F |
| Pattaya | 87.3°F | 88.8°F | 88.0°F |
| Phangan | 87.2°F | 88.8°F | 87.9°F |
| Ko Phangan | 87.2°F | 88.8°F | 87.7°F |
| Lamai Beach | 87.2°F | 89.0°F | 87.2°F |
| Chumphon | 87.2°F | 89.1°F | 87.7°F |
| Pattani | 87.1°F | 88.6°F | 87.4°F |
| Taling Ngam Beach | 87.1°F | 89.2°F | 87.4°F |
| Samui | 87.1°F | 89.0°F | 87.3°F |
| Chaweng Beach | 87.1°F | 89.0°F | 87.2°F |
| Choeng Mon Beach | 87.1°F | 89.0°F | 87.3°F |
| Mae Nam Beach | 87.1°F | 89.0°F | 87.4°F |
| Bo Phut Beach | 87.1°F | 89.0°F | 87.4°F |
| Tao | 87.1°F | 88.6°F | 87.5°F |
| Surat Thani | 87.1°F | 88.2°F | 87.6°F |
| Narathiwat | 87.0°F | 88.4°F | 87.2°F |
| Cape Panwa | 87.0°F | 88.5°F | 87.3°F |
| Ko Li Pe | 86.9°F | 88.6°F | 87.4°F |
| Prachuap Khiri Khan | 86.8°F | 88.3°F | 87.3°F |
| Krabi | 86.7°F | 88.5°F | 87.7°F |
| Phi Phi | 86.7°F | 88.7°F | 87.3°F |
| Rawai Beach | 86.7°F | 88.3°F | 87.0°F |
| Nai Harn Beach | 86.7°F | 88.3°F | 87.0°F |
| Kata Beach | 86.6°F | 88.2°F | 87.0°F |
| Karon Beach | 86.6°F | 88.2°F | 87.0°F |
| Koh Lanta | 86.6°F | 89.0°F | 87.9°F |
| Phuket | 86.6°F | 88.3°F | 87.3°F |
| Patong Beach | 86.6°F | 88.2°F | 87.1°F |
| Kalim Beach | 86.5°F | 88.2°F | 87.2°F |
| Surin Beach | 86.5°F | 88.2°F | 87.2°F |
| Kamala Beach | 86.5°F | 88.2°F | 87.2°F |
| Bang Tao Beach | 86.5°F | 88.2°F | 87.2°F |
| Mai Khao Beach | 86.4°F | 88.0°F | 87.3°F |
| Nai Yang Beach | 86.4°F | 88.1°F | 87.3°F |
| Similan | 86.3°F | 87.8°F | 87.1°F |
| Khao Lak | 86.1°F | 87.3°F | 87.1°F |
Charts below show average sea water temperature for Thailand resorts with the warmest sea in May.
You can also check other months of the year to see sea temperature of Thailand resorts at that time.
Places in Thailand:
Name
°F
