La-Un Weather in September
What's the weather like in La-Un (Ranong) in September 2025?
The climate in La-Un during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in La-Un and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a steamy 29°C (85°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 29.3°C 84.7°F |
|---|---|
| Nightly temperature | 22.6°C 72.6°F |
| Average temperature | 25.9°C 78.6°F |
| Daily sunshine | 5.6 hrs |
| Avg rainfall | 558 mm 22 ins |
| Rainy days | 24 days |
| Sea temperature | 28.8°C 83.8°F |
| Humidity | 87% |
| Windspeed | 5.8kph 4 mph |
On average September is the 4th wettest month of the year in La-Un with around 558mm 22 inches of rain making it a very wet time to visit. This rainfall is typically spread over 24 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.6 hours of sunshine per day.
September temperatures in La-Un
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in La-Un in September 2025.
Other monthly averages
Best places to visit in September
La-Un weather stats
| Hottest month: | April | 32.9°C 91.2°F |
|---|---|---|
| Driest month: | February | 29mm 1.1ins |
| Sunniest month: | February | 9.2hrs |
| Coldest month: | December | 29.6°C 85.3°F |
| Wettest month: | August | 637mm 25.1ins |
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