Swimming in Koh Lanta in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Koh Lanta in september 2025.
In september, according to seasonal norms, the sea temperature in Koh Lanta is:
Minimum: 83°F
Average: 85°F
Maximum: 87°F
Other useful seasonal weather averages in september:
- Outside temperature: 82°F to 85°F
- Most common weather: "Heavy rain"
- The wind blows at 17.4mph
- It rains a total of 19.5in, over 19 day(s).
Should we swim in Koh Lanta in september?
Yes! The water temperature in Koh Lanta in september is ideal
In september, swimming is ideal on the beaches around Koh Lanta! With water reaching 87°F at most and 85°F on average, spending time in the water is very pleasant.
Note also that in september, the climate is tolerable with an average outside temperature of 83°F, 19.5in of precipitation (over 19 days) and 77.99 % humidity.
Water and normal seasonal temperatures in Koh Lanta in september
| September | |||
| Average sea temperature | 85°F | ||
| Minimum sea temperature | 83°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 85°F | ||
| Minimum outside temperature | 83°F | ||
| Wind speed | 13.7mph | ||
| Wind temperature | 83°F | ||
| Precipitation | 19.5in | ||
| Number of days of rain | 19 jour(s) (64%) | ||
| Humidity | 78% | ||
| Visibility in kilometers | 8.69km | ||
| Cloud cover | 44% | ||
| Our opinion | ideal swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Koh Lanta
Swim elsewhere in Thailand in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Bangkok in september | 84°F | 86°F | ideal swimming | Chanthaburi in september | 85°F | 85°F | ideal swimming | Hua Hin in september | 85°F | 86°F | ideal swimming | Khao Lak national Park in september | 84°F | 86°F | ideal swimming | Koh Chang in september | 85°F | 85°F | ideal swimming | Koh Phangan in september | 85°F | 87°F | ideal swimming | Koh Phi Phi in september | 85°F | 87°F | ideal swimming | Koh Tao in september | 85°F | 86°F | ideal swimming | Krabi - Ao Nang in september | 84°F | 86°F | ideal swimming | Pattaya in september | 85°F | 86°F | ideal swimming | Ko Samet in september | 85°F | 86°F | ideal swimming | Koh Kut (Koh Kood) in september | 85°F | 86°F | ideal swimming | Trat in september | 85°F | 85°F | ideal swimming | Koh Yao Noi in september | 84°F | 86°F | ideal swimming | Koh Yao Yai in september | 84°F | 86°F | ideal swimming | Railay beach in september | 85°F | 86°F | ideal swimming | Cha-am in september | 85°F | 86°F | ideal swimming |