Lamai Beach Weather in September
During September, Lamai Beach experiences high daytime temperatures of 30°C (86°F) and cooler nights around 27°C (81°F). Expect quite a bit of rainfall. Around 152 mm (6 in) is typical.
Rainfall in Lamai Beach in September
Historically, September sees about 18 days of rain, with a monthly average of 152 mm (6 in). Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Lamai Beach in September
September in Lamai Beach brings typical temperatures with highs around 30°C (86°F) and lows of 27°C (81°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. 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 Lamai Beach in September
The area enjoys a moderate level of sunlight, with around 145 hours. It's a good balance between sunny and cloudy days.
Average water temperature in September
At 29°C (84°F), the water feels bath-warm. Fine for swimming, but those looking for a cooling swim may be a bit disappointed.If you prefer enjoying temperate temperatures and rain-free days, January and February typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Water Temperature
29°C (84°F) *
Chance of Rain
58%
Precipitation
152 mm (6 in)
Rainy days
18 days
Humidity
79% *
Sunshine
145 hours *
Percentage Sunshine
*
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Lamai Beach typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Lamai Beach in September
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 September
The extremes listed below come from historical weather data collected in Lamai Beach from 1986 through 2025.
- On September 9, 2024, temperatures climbed to 36°C (97°F), marking the warmest September day on record.
- The coldest September day was on September 18, 1995, with a maximum of 26°C (79°F).
- Lamai Beach registered its coldest September night on September 25, 2012, with temperatures dropping to 20°C (68°F).
Best Places in Thailand in September
Find out more about the weather in Thailand and which places have the best travel conditions in this month. See all of Thailand in September →
perfect weather
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What to Wear in Lamai Beach in September
Warm temperatures in September 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. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Expect water temperatures of around 29°C (84°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Lamai Beach in September
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 Lamai Beach's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Lamai Beach climate overview or explore weather in Thailand.
