Weather in Koh Samui in April

In April, the weather in Koh Samui, Thailand is typically warm and humid, with temperatures generally hovering between 27°C and 33°C. Rainfall is moderate to low, with bright sunshine filling most days, making it great for outdoor activities. However, the humidity can be quite high, giving the air a dense feeling. This tropical island is ideal for exploration and enjoying seasonal highlights despite the warmth.

April Climate Overview

• Average Temperature: 27°C – 33°C
• Rainfall: Approximately 90mm
• Sunshine Hours: Around 8 hours
• Sea Temperature: 29°C
• Humidity: High, about 80%
• Wind Speed: Moderate, about 15 km/h

What to Expect in April

Daytime Conditions

During the day, the temperature rises to a warm and humid 33°C. The sun is usually bright, so sun protection is necessary. This warm weather promotes lots of outdoor activities, though the humidity can make it feel hotter than it is.

Rainfall Patterns

Rainfall in April is relatively low, usually in the form of brief showers, which can bring a refreshing break from the heat. Their scattered nature means they rarely disrupt plans, leaving plenty of time for outdoor enjoyment.

Evening Conditions

Evenings provide a slight relief as temperatures cool down to 27°C. The gentle breezes can make nights more comfortable. It’s still quite humid, but evenings are generally pleasant and suitable for wandering around or enjoying low-key outdoor activities.

Best Activities in Koh Samui in April

• Outdoor Activities: Exploring the island’s numerous hiking trails and visiting local markets are perfect in April weather.
• Seasonal Highlights: Enjoy the vibrant blossoms and lush landscapes brought to life by earlier rains.
• Water-based or Nature-based Activities: Given the warm sea temperatures, activities like snorkelling and swimming are enjoyable.

What to Pack for April

• Light, breathable clothing for daytime and layers for cooler evenings
• Protection from sun or rain (hat, sunscreen, umbrella, etc.)
• Footwear suitable for local terrain (e.g., walking, hiking, city streets)
• Reusable water bottle