September Weather in Loei, Thailand

Last updated: August 27, 2025

In September, the average temperature in Loei, Thailand is a warm 27°C (81°F), with lows of 21°C (70°F) and highs reaching up to 35°C (95°F). Expect 225 mm (8.8 in) of precipitation spread over 24 days, contributing to an average humidity level of 86%.

September Temperature in Loei

In September in Loei, the average temperature is 27°C (81°F), with maximums reaching up to 35°C (95°F) and minimums dropping as low as 21°C (70°F). This pleasant climate makes it an ideal destination for travelers seeking warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Loei, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Loei, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (95°F) and lows dropping to around 21°C (70°F).

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

September Precipitation in Loei

In Loei in September, the precipitation amount is 225 mm (8.8 in) spread over 24 days.

September Precipitation Trends in Loei

The chart displays monthly precipitation patterns in Loei, 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 Loei, September typically receives around 225 mm (8.8 inches) of precipitation spread over approximately 24 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Loei

In Loei in September, humidity is 86%. With an average temperature of 27°C (81°F), this humidity feels like walking through a steamy blanket, making traveling feel heavy and exhausting as each step absorbs the warm, moist air.

September Average Humidity in Loei

This chart illustrates the average monthly humidity levels in Loei, 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 Loei 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 Loei

In Loei 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 Loei, you can check here.

Maximum UV Index Levels in Loei for September

The chart shows the monthly maximum UV Index (UVI) for Loei 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 Loei typically reaches 14, which falls under the extreme exposure category.

Data source: Loei 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 Loei Compares to Other Months

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

This table compares monthly weather conditions in Loei, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (73°F)	7 mm (0.3 inches)	52%	very high
February Weather	24°C (75°F)	16 mm (0.6 inches)	49%	extreme
March Weather	27°C (81°F)	39 mm (1.5 inches)	39%	extreme
April Weather	28°C (82°F)	89 mm (3.5 inches)	40%	extreme
May Weather	28°C (83°F)	189 mm (7.5 inches)	69%	extreme
June Weather	28°C (83°F)	191 mm (7.5 inches)	81%	extreme
July Weather	28°C (82°F)	211 mm (8.3 inches)	83%	extreme
August Weather	27°C (82°F)	279 mm (11.0 inches)	87%	extreme
September Weather	27°C (81°F)	225 mm (8.8 inches)	86%	extreme
October Weather	26°C (79°F)	124 mm (4.9 inches)	74%	extreme
November Weather	25°C (77°F)	14 mm (0.5 inches)	63%	very high
December Weather	22°C (71°F)	9 mm (0.4 inches)	57%	very high