Koh Yao Noi Weather in September

With daytime temperatures of 30°C (86°F) and nighttime lows of 26°C (79°F), September in Koh Yao Noi brings high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.

Rainfall in Koh Yao Noi in September

Koh Yao Noi is in the rainy season in September, with rain on around 23 days and an average of 317 mm (12 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in Koh Yao Noi in September

In September, Koh Yao Noi sees high temperatures, with highs of 30°C (86°F). Nights drop to around 26°C (79°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights are warm at 26°C (79°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in Koh Yao Noi in September

This month is characterized by fewer sunny days, with about 0 hours of sunshine. It's great for those who appreciate cooler, less sunny days.

Average water temperature in September

The water sits at 0°C (32°F) this month, which is well below what most people consider swimmable. Wetsuits help, but expect it to still feel cold.

September in Koh Yao Noi has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.