Koh Samet Weather in January
Koh Samet in January sees very high daytime temperatures of 30°C (86°F) and nighttime lows of 25°C (77°F). Low rainfall is typical, with around 28 mm (1.1 in) for the month.
Rainfall in Koh Samet in January
You can expect rain on around 2 days based on historical patterns, with 28 mm (1.1 in) average for the month. Any rain that does arrive tends to come in a single sharp spell rather than prolonged drizzle.
Temperature in Koh Samet in January
Koh Samet has perfect weather in January, with days reaching 30°C (86°F) and nights cooling to 25°C (77°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Koh Samet in January
Expect sunny days throughout the month, with an estimated 230 hours of sunshine. This makes it a pleasant time to visit Koh Samet.If you're inclined towards comfortable temperatures and drier conditions, January is a good time to visit Koh Samet.
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 Koh Samet's climate page.
Koh Samet Temperature in January
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
6%
Precipitation
28 mm (1.1 in)
Rainy days
2 days
Humidity
73% *
Sunshine
230 hours *
Percentage Sunshine
*
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Koh Samet typically stay consistent throughout January, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 22°C (72°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Koh Samet in January
Browse day-by-day weather records for Koh Samet spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Koh Samet historical weather extremes in January
According to our 49 years of weather records for Koh Samet, the following extremes were recorded between 1976 and 2025.
- On January 26, 1982, temperatures climbed to 37°C (99°F), marking the warmest January day on record.
- Koh Samet experienced its chilliest January day on January 10, 1999, reaching only 24°C (75°F).
- Koh Samet registered its coldest January night on January 25, 2014, with temperatures dropping to 14°C (57°F).
Best Places in Thailand in January
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in January →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Koh Samet in January
Warm temperatures in January make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Pack a light rain jacket or compact umbrella for occasional showers. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Koh Samet in January
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 Koh Samet's climate page.
Temperature Rainfall Sunshine Humidity
See the full Koh Samet climate overview or explore weather in Thailand.
