September Weather in Sawi, Thailand

Last updated: August 27, 2025

In Sawi, Thailand, the average temperature in September is a pleasant 27°C (80°F). Residents can expect a minimum of 22°C (72°F) and a maximum of 34°C (94°F) throughout the month. However, prepare for 319 mm (12.5 in) of rainfall distributed over 25 rainy days, contributing to an average humidity of 86%. Stay hydrated and enjoy the warmth!

September Temperature in Sawi

In September in Sawi, the average temperature is 27°C (80°F). Maximums can reach 34°C (94°F), and minimums can be as low as 22°C (72°F). This pleasant and warm climate makes Sawi an ideal destination for travelers seeking enjoyable weather.

September Weather in Sawi: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sawi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sawi, September typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (72°F).

Data source: Temperature data for Sawi generated using information from the Copernicus Climate Change Service.

September Precipitation in Sawi

In Sawi in September, the total precipitation amount is 319 mm (12.5 in) over the course of 25 days.

September Precipitation Trends in Sawi

The chart displays monthly precipitation patterns in Sawi, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Sawi, September typically receives around 319 mm (12.5 inches) of precipitation spread over approximately 25 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Sawi

In Sawi in September, humidity is 86%. With an average temperature of 27°C (80°F), this humidity feels like a warm, sticky blanket enveloping you, making travel feel heavy and exhausting as you navigate the sultry air.

September Average Humidity in Sawi

This chart illustrates the average monthly humidity levels in Sawi, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Sawi is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sawi

In Sawi in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Sawi, you can check here.

Maximum UV Index Levels in Sawi for September

The chart shows the monthly maximum UV Index (UVI) for Sawi in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Sawi typically reaches 14, which falls under the extreme exposure category.

Data source: Sawi September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Sawi Compares to Other Months

Weather in Sawi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sawi, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sawi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	133 mm (5.2 inches)	67%	extreme
February Weather	26°C (80°F)	35 mm (1.4 inches)	66%	extreme
March Weather	28°C (82°F)	39 mm (1.5 inches)	68%	extreme
April Weather	28°C (83°F)	167 mm (6.6 inches)	71%	extreme
May Weather	28°C (82°F)	220 mm (8.6 inches)	77%	extreme
June Weather	28°C (82°F)	220 mm (8.6 inches)	85%	extreme
July Weather	27°C (81°F)	216 mm (8.5 inches)	87%	extreme
August Weather	27°C (81°F)	237 mm (9.3 inches)	88%	extreme
September Weather	27°C (80°F)	319 mm (12.5 inches)	86%	extreme
October Weather	27°C (80°F)	301 mm (11.8 inches)	84%	extreme
November Weather	26°C (80°F)	246 mm (9.7 inches)	83%	extreme
December Weather	26°C (79°F)	157 mm (6.2 inches)	77%	very high