Lak Si Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Lak Si.
Climate overview of Lak Si
The climate in Lak Si, Bangkok Province, Thailand, is remarkably consistent, with temperatures year-round averaging 35°C (95°F). The warmest month is April at 37°C (99°F), and the coolest is January at 33°C (91°F).
Rainfall is high, totalling around 1336 mm (53 in) per year. September is the wettest month and December the driest. The city also experiences distinct dry (December to February) and wet (August to October) seasons. January is the sunniest month, averaging 9.1 hours of sunshine per day.
Lak Si Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Lak Si — and find the best time to visit.
Monthly Temperature in Lak Si
In Lak Si temperatures are generally consistent throughout the year. Average maximum daytime temperatures range from a very hot 37°C (99°F) in April, the warmest time of the year, to a very warm 33°C (91°F) during cooler months like January.
At night, you can expect temperatures ranging from 27°C (81°F) in April to around 22°C (72°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Lak Si
Lak Si experiences significant rainfall throughout the year, averaging 1336 mm (53 in) of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, September it receives heavy rainfall, averaging 272 mm (11 in) of precipitation, recorded across 20 rainy days. In contrast, the driest month December brings less rainfall, with 11 mm (0.4 in) over a single rainy day. For more details, please visit our Lak Si Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Lak Si
Seasonal changes in sunshine hours are quite dramatic in Lak Si. While January receives considerable daily sunshine with up to 9.1 hours, September marks the darkest time of the year, where sunshine is scarce with only 5.2 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Lak Si by Month
The relative humidity is high throughout the year in Lak Si.
The city experiences its highest humidity in September, reaching 79%. In January, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Lak Si
The average wind speed over the year ranges from 1 m/s (2 knots) to 2 m/s (4 knots). It is lower in January, May, June, July, August, September, October, November and December and higher in February, March and April. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Lak Si
The climate is defined by its distinct wet and dry seasons, offering predictable patterns to help you plan your trip. Be prepared for the wet season during June, July, August, September and October, when the area receives significant precipitation. Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.
Frequently asked questions about the climate in Lak Si
What is the best time to visit Lak Si?
January and December typically offer the most optimal weather in Lak Si. In contrast, February, March, April, May, June, July, August, September, October and November tend to have less optimal conditions. Lak Si has distinct dry (December to February) and wet (August to October) seasons.
What temperatures can I expect in Lak Si?
Daytime highs range from 33°C (91°F) in January to 37°C (99°F) in April. Nighttime lows range from 22°C (72°F) to 27°C (81°F). Temperatures stay relatively stable year-round.
How much rain does Lak Si get?
Annual rainfall is around 1336 mm (53 in). September is the wettest month with 272 mm (11 in), while December is the driest with 11 mm (0.4 in).
How sunny is Lak Si?
Lak Si receives around 2,624 hours of sunshine per year. January is the sunniest month with 273 hours, while September is the cloudiest with just 155 hours. Overall, Lak Si enjoys abundant sunshine.
Lak Si 3-Day Forecast
Lak Si 3-Day Forecast
Lak Si on the map
Lak Si is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Bangkok
34°C (93°F) Chiang Mai33°C (91°F) Jomtien Beach
32°C (90°F) Hua Hin32°C (90°F) Koh Samui30°C (86°F) Ko Lanta30°C (86°F) Ao Nang Beach30°C (86°F) Patong Beach30°C (86°F) 
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