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Lamai Beach Weather in January

January is one of the perfect months to visit Lamai Beach, with daytime temperatures of 29°C (84°F) and lows of 26°C (79°F) at night. Do note that quite a bit of rainfall is typical, averaging around 84 mm (3.3 in).

Rainfall in Lamai Beach in January

Expect around 9 days of rain based on historical data, with 84 mm (3.3 in) average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Lamai Beach in January

January is a perfect month in Lamai Beach, with 29°C (84°F) during the day and 26°C (79°F) at night. 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 Lamai Beach in January

The city usually sees around 200 hours of sunlight, indicating many sunny days — a great month for sightseeing.

Average water temperature in January

With water at 27°C (81°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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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 Lamai Beach's climate page.

Lamai Beach Temperature in January

Min TemperatureMin Temperature 26°C (79°F)  
Max TemperatureMax Temperature 29°C (84°F)  
Water TemperatureWater Temperature 27°C (81°F) *  
Chance of RainChance of Rain 31%  
PrecipitationPrecipitation 84 mm (3.3 in)  
Rainy daysRainy days 9 days  
HumidityHumidity 83% *  
SunshineSunshine 200 hours *  
Percentage SunshinePercentage Sunshine *  
* Data from: Koh Samui, Thailand (14 KM, 8 Miles).

Daily Historical Temperatures

50-year average (1976-2026)

Based on our historical records, temperatures in Lamai Beach typically stay consistent throughout January, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 25°C (77°F).

Average temperatures in January

Daily Historical Precipitation

50-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 Lamai Beach in January

Browse day-by-day weather records for Lamai Beach spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Lamai Beach historical weather extremes in January

According to our 32 years of weather records for Lamai Beach, the following extremes were recorded between 1993 and 2025.

  • The hottest January day on record in Lamai Beach reached 34°C (93°F) (January 23, 2023).
  • The coldest January day was on January 23, 2000, with a maximum of 24°C (75°F).
  • Lamai Beach registered its coldest January night on January 2, 2007, with temperatures dropping to 20°C (68°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 →

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Lamai Beach 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. Prepare for significant rainfall with proper waterproof clothing and shoes. Expect water temperatures of around 27°C (81°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Lamai Beach in January

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
7/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Select a Month

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 Lamai Beach's climate page.

More climate data for Lamai Beach