In April warmest sea in Thailand is usually observed in the following locations: Koh Lanta, Trat, Krabi.
Table below shows the average sea water temperature for marine resorts of Thailand in April for the last three years.
| Place name | April 2026 | April 2025 | April 2024 |
|---|---|---|---|
| Koh Lanta | 88.7°F | 87.4°F | 88.8°F |
| Trat | 88.4°F | 87.6°F | 89.7°F |
| Krabi | 88.4°F | 87.2°F | 88.9°F |
| Chumphon | 88.2°F | 86.8°F | 89.4°F |
| Koh Chang | 88.1°F | 86.8°F | 89.2°F |
| Hat Yai | 88.1°F | 87.2°F | 88.7°F |
| Ko Wai | 88.1°F | 86.6°F | 88.9°F |
| Ko Mak | 88.1°F | 86.4°F | 88.7°F |
| Samet | 88.0°F | 86.9°F | 88.8°F |
| Rayong | 88.0°F | 86.9°F | 88.9°F |
| Koh Kood | 87.9°F | 86.7°F | 88.6°F |
| Surat Thani | 87.7°F | 87.2°F | 88.2°F |
| Cha-am | 87.6°F | 87.1°F | 88.3°F |
| Pattaya | 87.5°F | 86.2°F | 88.2°F |
| Jomtien | 87.5°F | 86.2°F | 88.2°F |
| Hua Hin | 87.4°F | 86.8°F | 88.1°F |
| Phi Phi | 87.4°F | 86.8°F | 87.9°F |
| Cape Panwa | 87.3°F | 86.3°F | 87.6°F |
| Ko Li Pe | 87.2°F | 86.4°F | 87.7°F |
| Phuket | 87.2°F | 86.4°F | 87.5°F |
| Mai Khao Beach | 87.2°F | 86.4°F | 87.6°F |
| Bangkok | 87.2°F | 86.4°F | 87.9°F |
| Nai Yang Beach | 87.1°F | 86.4°F | 87.5°F |
| Taling Ngam Beach | 87.1°F | 86.6°F | 88.3°F |
| Khao Lak | 87.1°F | 86.3°F | 87.2°F |
| Kamala Beach | 87.1°F | 86.3°F | 87.4°F |
| Bang Tao Beach | 87.1°F | 86.3°F | 87.4°F |
| Surin Beach | 87.1°F | 86.3°F | 87.4°F |
| Tao | 87.0°F | 86.1°F | 87.4°F |
| Kalim Beach | 87.0°F | 86.2°F | 87.3°F |
| Patong Beach | 87.0°F | 86.2°F | 87.2°F |
| Phangan | 86.9°F | 86.5°F | 88.0°F |
| Similan | 86.9°F | 86.5°F | 87.1°F |
| Kata Beach | 86.9°F | 86.1°F | 87.2°F |
| Karon Beach | 86.9°F | 86.1°F | 87.2°F |
| Pattani | 86.9°F | 86.2°F | 87.5°F |
| Rawai Beach | 86.9°F | 86.1°F | 87.3°F |
| Nai Harn Beach | 86.9°F | 86.1°F | 87.3°F |
| Mae Nam Beach | 86.9°F | 86.5°F | 88.1°F |
| Bo Phut Beach | 86.9°F | 86.5°F | 88.1°F |
| Koh Lan | 86.9°F | 86.1°F | 87.8°F |
| Samui | 86.8°F | 86.4°F | 88.1°F |
| Ko Phangan | 86.8°F | 86.4°F | 87.9°F |
| Narathiwat | 86.7°F | 85.8°F | 87.6°F |
| Lamai Beach | 86.7°F | 86.4°F | 88.1°F |
| Chaweng Beach | 86.7°F | 86.4°F | 88.1°F |
| Choeng Mon Beach | 86.7°F | 86.4°F | 88.1°F |
| Prachuap Khiri Khan | 86.4°F | 85.8°F | 87.3°F |
Charts below show average sea water temperature for Thailand resorts with the warmest sea in April.
You can also check other months of the year to see sea temperature of Thailand resorts at that time.
Places in Thailand:
Name
°F
