Weather in Krabi in September 2025
- September is usually the coldest month of the year in Krabi;
Average weather
Average temperature in Krabi in September
The temperature in September is +30°C on average, with a range between a maximum of +33°C during the day and a minimum of +25°C at night.
The average maximum temperature goes up 50% by the end of the month, compared with the beginning of the month, from +29°C to +33°C.
Is Krabi warm or cold in September?
Krabi is typically warm in September.
Maximum temperatures go down compared to the previous month from +30°C to +29°C. The minimum temperature also goes up from +25°C to +25°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is the coldest month in Krabi, here is the comparison with other months:
Water temperature in Krabi in September
Water in Krabi in September is Very warm. It varies from +28°C to +30°C, with an average of +29°C. Note that the air temperature is lower than the water temperature, averaging around +29°C.
In September, water temperatures are average relative to the rest of the year:
Can you swim in Krabi in September?
Climate in Krabi in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +30°C | +29°C | +30°C | ||||
| Min. temperature | ||||||
| +22°C | +23°C | +22°C | ||||
| Max. temperature | ||||||
| +35°C | +34°C | +35°C | ||||
| Rainfall | ||||||
| 266 mm | 304 mm | 264 mm | ||||
| Wind | ||||||
| 3 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +29°C | +29°C | +29°C | ||||
| Humidity | ||||||
| 83% | 84% | 84% | ||||
| Air pressure | ||||||
| 1008 HPa | 1009 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 3 | 2 | 1 | ||||
| Rainy days | ||||||
| 26 | 26 | 25 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +30°C in the day, the average maximum temperature lowers to +29°C. Prepare for more rain. Average rainfall goes from 266 mm to 304 mm. Humidity rises from 83% to 84%. Winds are calmer in comparison to August, going down from 3 m/s to 2 m/s on average. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Krabi is gradually decreasing during September, going from 3 m/s to 1 m/s over the course of the month.
Rain
How was the weather last September in Krabi?
Climate Change over Years
The climate in Krabi in September has not changed much over the last 43 years.
The average temperature was the lowest in 1999 (+29°C) and the highest in 2020 (+33°C). The driest year was 2002 with only 1391 mm of rainfall, and the wettest year was 2000 with 2625 mm.
FAQ
Is September a good time to visit Krabi?
Can you sunbathe in Krabi in September?
Can you swim in Krabi in September?
Is Krabi rainy in September?
Is it sunny in Krabi in September?
Other cities in Thailand
Monthly weather in Krabi
Source of the data
For this page, we’ve looked at the typical weather in Krabi, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.