Thailand in April: where is it warmest?
In April, Chiang Mai is the warmest place with 36 °C by day, Ko Pha-ngan the coolest with 26 °C. 10 of 12 destinations have good holiday weather.
All destinations in April, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Chiang Mai | 47 | 36° | – | 8 h | 5 |
| Bangkok | 33 | 35° | – | 8 h | 11 |
| Hua Hin | 69 | 34° | 30° | 8 h | 13 |
| Pattaya | 82 | 32° | 30° | 8 h | 10 |
| Khao Lak | 72 | 31° | 30° | 7 h | 23 |
| Ao Nang, Krabi | 71 | 31° | 30° | 6 h | 24 |
| Koh Samui | 82 | 30° | 30° | 8 h | 14 |
| Patong, Phuket | 72 | 30° | 30° | 7 h | 23 |
| Phuket | 72 | 30° | 30° | 7 h | 23 |
| Koh Lanta | 72 | 30° | 30° | 7 h | 22 |
| Koh Tao | 84 | 29° | 30° | 8 h | 13 |
| Ko Pha-ngan | 84 | 26° | 30° | 8 h | 13 |
Thailand in April: quick answers
Thailand in April: where is it warmest?
The warmest places in April are Chiang Mai (36 °C), Bangkok (35 °C) and Hua Hin (34 °C).
Thailand in April: where is the sea warmest?
The sea is warmest at Hua Hin (30 °C), Pattaya (30 °C) and Khao Lak (30 °C).
Thailand in April: where is the weather best?
The best holiday weather in April – warm, sunny and dry – is in Koh Tao, Ko Pha-ngan and Pattaya.
Thailand month by month
Thailand: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences