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 | 88.5°F | 87.4°F | 88.8°F |
| Trat | 88.3°F | 87.6°F | 89.7°F |
| Krabi | 88.2°F | 87.2°F | 88.9°F |
| Chumphon | 88.1°F | 86.8°F | 89.4°F |
| Koh Chang | 88.0°F | 86.8°F | 89.2°F |
| Ko Mak | 88.0°F | 86.4°F | 88.7°F |
| Ko Wai | 88.0°F | 86.6°F | 88.9°F |
| Samet | 87.9°F | 86.9°F | 88.8°F |
| Rayong | 87.9°F | 86.9°F | 88.9°F |
| Hat Yai | 87.9°F | 87.2°F | 88.7°F |
| Koh Kood | 87.8°F | 86.7°F | 88.6°F |
| Surat Thani | 87.6°F | 87.2°F | 88.2°F |
| Cha-am | 87.5°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 | 87.3°F | 86.8°F | 88.1°F |
| Phi Phi | 87.2°F | 86.8°F | 87.9°F |
| Taling Ngam Beach | 87.1°F | 86.6°F | 88.3°F |
| Bangkok | 87.1°F | 86.4°F | 87.9°F |
| Cape Panwa | 87.1°F | 86.3°F | 87.6°F |
| Ko Li Pe | 87.1°F | 86.4°F | 87.7°F |
| Phuket | 87.0°F | 86.4°F | 87.5°F |
| Mai Khao Beach | 87.0°F | 86.4°F | 87.6°F |
| Nai Yang Beach | 87.0°F | 86.4°F | 87.5°F |
| Phangan | 86.9°F | 86.5°F | 88.0°F |
| Tao | 86.9°F | 86.1°F | 87.4°F |
| Kamala Beach | 86.9°F | 86.3°F | 87.4°F |
| Surin Beach | 86.9°F | 86.3°F | 87.4°F |
| Bang Tao Beach | 86.9°F | 86.3°F | 87.4°F |
| Khao Lak | 86.9°F | 86.3°F | 87.2°F |
| Kalim Beach | 86.8°F | 86.2°F | 87.3°F |
| Mae Nam Beach | 86.8°F | 86.5°F | 88.1°F |
| Bo Phut Beach | 86.8°F | 86.5°F | 88.1°F |
| Patong Beach | 86.8°F | 86.2°F | 87.2°F |
| Pattani | 86.8°F | 86.2°F | 87.5°F |
| Similan | 86.8°F | 86.5°F | 87.1°F |
| Koh Lan | 86.7°F | 86.1°F | 87.8°F |
| Samui | 86.7°F | 86.4°F | 88.1°F |
| Ko Phangan | 86.7°F | 86.4°F | 87.9°F |
| Kata Beach | 86.7°F | 86.1°F | 87.2°F |
| Karon Beach | 86.7°F | 86.1°F | 87.2°F |
| Rawai Beach | 86.7°F | 86.1°F | 87.3°F |
| Nai Harn Beach | 86.7°F | 86.1°F | 87.3°F |
| Narathiwat | 86.7°F | 85.8°F | 87.6°F |
| Lamai Beach | 86.7°F | 86.4°F | 88.1°F |
| Chaweng Beach | 86.6°F | 86.4°F | 88.1°F |
| Choeng Mon Beach | 86.6°F | 86.4°F | 88.1°F |
| Prachuap Khiri Khan | 86.3°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
