In May warmest sea in Thailand is usually observed in the following locations: Trat, Rayong, Hat Yai.
Table below shows the average sea water temperature for marine resorts of Thailand in May for the last three years.
| Place name | May 2026 | May 2025 | May 2024 |
|---|---|---|---|
| Trat | 88.5°F | 87.9°F | 89.3°F |
| Rayong | 88.3°F | 87.9°F | 89.1°F |
| Hat Yai | 88.3°F | 87.4°F | 89.5°F |
| Koh Chang | 88.3°F | 87.7°F | 89.7°F |
| Samet | 88.2°F | 88.0°F | 89.0°F |
| Ko Wai | 88.1°F | 87.8°F | 89.4°F |
| Cha-am | 88.1°F | 87.6°F | 88.9°F |
| Ko Li Pe | 88.0°F | 86.9°F | 88.6°F |
| Bangkok | 87.9°F | 87.3°F | 88.5°F |
| Ko Mak | 87.9°F | 87.8°F | 89.2°F |
| Koh Lanta | 87.9°F | 86.6°F | 89.0°F |
| Jomtien | 87.9°F | 87.3°F | 88.8°F |
| Koh Kood | 87.9°F | 87.7°F | 89.2°F |
| Pattaya | 87.9°F | 87.3°F | 88.8°F |
| Koh Lan | 87.9°F | 87.3°F | 88.8°F |
| Hua Hin | 87.8°F | 87.7°F | 88.6°F |
| Phi Phi | 87.8°F | 86.7°F | 88.7°F |
| Krabi | 87.8°F | 86.7°F | 88.5°F |
| Cape Panwa | 87.6°F | 87.0°F | 88.5°F |
| Mai Khao Beach | 87.5°F | 86.4°F | 88.0°F |
| Phuket | 87.5°F | 86.6°F | 88.3°F |
| Nai Yang Beach | 87.5°F | 86.4°F | 88.1°F |
| Kalim Beach | 87.4°F | 86.5°F | 88.2°F |
| Bang Tao Beach | 87.4°F | 86.5°F | 88.2°F |
| Kamala Beach | 87.4°F | 86.5°F | 88.2°F |
| Surin Beach | 87.4°F | 86.5°F | 88.2°F |
| Rawai Beach | 87.4°F | 86.7°F | 88.3°F |
| Nai Harn Beach | 87.4°F | 86.7°F | 88.3°F |
| Patong Beach | 87.4°F | 86.6°F | 88.2°F |
| Kata Beach | 87.4°F | 86.6°F | 88.2°F |
| Karon Beach | 87.4°F | 86.6°F | 88.2°F |
| Pattani | 87.3°F | 87.1°F | 88.6°F |
| Chumphon | 87.2°F | 87.2°F | 89.1°F |
| Taling Ngam Beach | 87.2°F | 87.1°F | 89.2°F |
| Narathiwat | 87.2°F | 87.0°F | 88.4°F |
| Lamai Beach | 87.1°F | 87.2°F | 89.0°F |
| Chaweng Beach | 87.0°F | 87.1°F | 89.0°F |
| Similan | 87.0°F | 86.3°F | 87.8°F |
| Khao Lak | 87.0°F | 86.1°F | 87.3°F |
| Samui | 87.0°F | 87.1°F | 89.0°F |
| Choeng Mon Beach | 87.0°F | 87.1°F | 89.0°F |
| Mae Nam Beach | 86.9°F | 87.1°F | 89.0°F |
| Bo Phut Beach | 86.9°F | 87.1°F | 89.0°F |
| Phangan | 86.8°F | 87.2°F | 88.8°F |
| Surat Thani | 86.8°F | 87.1°F | 88.2°F |
| Ko Phangan | 86.8°F | 87.2°F | 88.8°F |
| Tao | 86.7°F | 87.1°F | 88.6°F |
| Prachuap Khiri Khan | 86.6°F | 86.8°F | 88.3°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
