Bangkok vs Koh Samui

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Koh Samui edges ahead as the better destination in July. Koh Samui offers 9 hours of daily sunshine with only 18 rain days, while Bangkok sees 9 sunshine hours and 23 rain days.

Bangkok can feel quite hot at 32°C, so plan for heat. Koh Samui is also comfortable at 27°C.

For travelers who prioritize dry weather, Koh Samui is the stronger choice in July.

Bangkok reaches an average high of 32°C (90°F) and drops to 26°C (79°F) at night during July. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.

Koh Samui averages 27°C (81°F) for the high and 24°C (75°F) for the low, with a daily range of 3°C. There is a notable 5°C gap between the two cities, so expect a very different feel.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in July.

Bangkok receives approximately 138 mm of rainfall across 23 rain days during July. Rain is frequent, so waterproof gear is essential.

Koh Samui sees 82 mm over 18 rain days. That makes Koh Samui the drier option by 5 rain days and 56 mm of total precipitation.

Both cities share similar humidity levels at 82%.