Last updated: March 2, 2024
The weather in Ko Samui, Thailand, during April is characterized by an average temperature of 28°C (83°F). Highs can soar to 30°C (87°F), while lows may dip to 26°C (79°F). Typically, the humidity level in Ko Samui throughout April hovers around 69%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In April, Ko Samui averages 144 mm (5.7 inches) of rainfall, typically over the course of 15 rainy days. The month enjoys an average of 12 hours 19 minutes of daylight, with the sun shining for approximately 10 hours 35 minutes each day. Additionally, there is a 32% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In April, the UV Index in Ko Samui reaches a maximum of 15, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 10 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 3 | 6 | 9 | 13 | 15 | 14 | 12 | 8 | 4 | 1 | 1 | 0 |
| Exposure | Low | Moderate | High | VeryHigh | Extreme | VeryHigh | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 30 min | 45 min | |||||