Koh Lanta weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Excellent
Best time to visit: January – March
What is the weather like in Koh Lanta in January?
In January, Koh Lanta is hot: daytime highs average 29 °C, and even at night it stays warm at around 25 °C. The sea averages 28.5 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. Rain falls on about 7 days, adding up to 49 mm. On about 9 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is an excellent month for a holiday in Koh Lanta.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 74 | 87 | 94 |
| Day | 29° | 29° | 31° |
| Night | 25° | 25° | 25° |
| Sea | 29° | 29° | 29° |
| Sun | 5 h | 6 h | 7 h |
| Rain days | 13 | 7 | 5 |
More details for January
- Daylight
- 11 h 44 min06:40 – 18:24
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 66 %on averageAll months
- Hot days
- 9 days30 °C or moreAll months
- Time zone
- UTC+7Asia/Bangkok
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %57 %
- Few rainy daysweight 20 %79 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in January
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
Koh Lanta in January: quick answers
Is Koh Lanta hot in January?
Yes. In January, Koh Lanta is hot: daytime highs average 29 °C and nights stay around 25 °C. On about 9 days the thermometer climbs to 30 °C or more.
Can you swim in Koh Lanta in January?
Yes. In January the sea averages 28.5 °C – lovely and warm for swimming.
Does it rain much in Koh Lanta in January?
Rain falls on about 7 days, adding up to 49 mm.
Koh Lanta month by month
The whole year in Koh LantaAll destinations: ThailandWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences