Ko Samui Weather in July
During July, Ko Samui experiences very high daytime temperatures of 30°C (86°F) and cooler nights around 27°C (81°F). Expect quite a bit of rainfall. Around 86 mm (3.4 in) is typical.
Rainfall in Ko Samui in July
The climate data from previous years indicates about 16 days of rain, averaging 86 mm (3.4 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Ko Samui in July
July in Ko Samui brings typical temperatures with highs around 30°C (86°F) and lows of 27°C (81°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. With overnight lows of 27°C (81°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.
Sunshine in Ko Samui in July
The month brings about 156 hours of sunlight, offering a comfortable mix of sun and overcast.
Average water temperature in July
At 29°C (84°F), the water is very warm — more like a heated pool than the sea. Great for those who like warm water, though some may find it less refreshing on a hot day.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January and February typically offer the best weather for Ko Samui.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Ko Samui's climate page.
Ko Samui Temperature in July
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Water Temperature
29°C (84°F) *
Chance of Rain
55%
Precipitation
86 mm (3.4 in)
Rainy days
16 days
Humidity
78% *
Sunshine
156 hours *
Percentage Sunshine
*
Best Places in Thailand in July
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in July →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Ko Samui in July
Warm but pleasant conditions in Ko Samui in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. The water temperature sits at about 29°C (84°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Ko Samui in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Thailand, check out our Ko Samui's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Ko Samui climate overview or explore weather in Thailand.
