April Weather in Siao, Thailand

Last updated: August 27, 2025

In April, the average temperature in Siao, Thailand is a warm 29°C (85°F), with daily variations ranging from a comfortable 18°C (64°F) to a sizzling 39°C (103°F). Expect around 64 mm (2.5 in) of precipitation spread over 12 days, and enjoy the moderate average humidity of 44% during this vibrant month.

April Temperature in Siao

In April in Siao, the average temperature is 29°C (85°F). Maximums can reach 39°C (103°F), and minimums can be as low as 18°C (64°F). Expect warm weather ideal for outdoor activities and sightseeing while staying hydrated.

April Weather in Siao: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Siao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siao, April typically has an average temperature of 29°C (85°F), with highs reaching up to 39°C (103°F) and lows dropping to around 18°C (64°F).

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

April Precipitation in Siao

In Siao in April, the total precipitation amount is 64 mm (2.5 in) over the course of 12 days.

April Precipitation Trends in Siao

The chart displays monthly precipitation patterns in Siao, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Siao, April typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 12 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Siao

In Siao in April, humidity is 44%. With an average temperature of 29°C (85°F), this humidity feels like a warm embrace, making travel comfortable yet slightly thick in the air, perfect for leisurely exploration but best enjoyed with plenty of hydration.

April Average Humidity in Siao

This chart illustrates the average monthly humidity levels in Siao, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Siao is approximately 44%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Siao

In Siao in April, 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 Siao, you can check here.

Maximum UV Index Levels in Siao for April

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

Data source: Siao April 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 April Weather in Siao Compares to Other Months

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

This table compares monthly weather conditions in Siao, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	3 mm (0.1 inches)	56%	very high
February Weather	26°C (79°F)	5 mm (0.2 inches)	50%	extreme
March Weather	29°C (84°F)	36 mm (1.4 inches)	41%	extreme
April Weather	29°C (85°F)	64 mm (2.5 inches)	44%	extreme
May Weather	29°C (85°F)	148 mm (5.8 inches)	71%	extreme
June Weather	29°C (84°F)	155 mm (6.1 inches)	83%	extreme
July Weather	28°C (83°F)	204 mm (8.0 inches)	87%	extreme
August Weather	28°C (83°F)	202 mm (8.0 inches)	90%	extreme
September Weather	28°C (82°F)	265 mm (10.4 inches)	89%	extreme
October Weather	27°C (81°F)	169 mm (6.7 inches)	83%	extreme
November Weather	26°C (79°F)	55 mm (2.2 inches)	74%	extreme
December Weather	24°C (76°F)	13 mm (0.5 inches)	68%	very high