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April Weather in Si Chiang Mai, Thailand

Last updated: August 27, 2025

In April, the average temperature in Si Chiang Mai, Thailand is a warm 29°C (85°F), with minimums dipping to 17°C (63°F) and soaring to a maximum of 42°C (107°F). Expect 70 mm (2.8 in) of precipitation spread over 11 days, and don't forget the 40% average humidity—a perfect recipe for a tropical vibe!

April Temperature in Si Chiang Mai

In April in Si Chiang Mai, the average temperature is 29°C (85°F). Maximums can reach 42°C (107°F), while minimums can drop as low as 17°C (63°F). Be prepared for hot days and cooler nights during your travels!

April Weather in Si Chiang Mai: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Si Chiang Mai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Si Chiang Mai, April typically has an average temperature of 29°C (85°F), with highs reaching up to 42°C (107°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec747682848584848383827973
Data source: Temperature data for Si Chiang Mai generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Si Chiang Mai

In Si Chiang Mai in April, the precipitation amount is 70 mm (2.8 in) distributed over 11 days.

April Precipitation Trends in Si Chiang Mai

The chart displays monthly precipitation patterns in Si Chiang Mai, 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 Si Chiang Mai, April typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec6174170204309331402265129107
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Si Chiang Mai

In Si Chiang Mai in April humidity is 40%. With an average temperature of 29°C (85°F), this humidity feels like a warm embrace, making travel enjoyable as long as you stay hydrated and take breaks in the shade.

April Average Humidity in Si Chiang Mai

This chart illustrates the average monthly humidity levels in Si Chiang Mai, 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 Si Chiang Mai is approximately 40%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec52%49%39%40%69%81%83%87%86%74%63%57%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Si Chiang Mai

In Si Chiang Mai 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 Si Chiang Mai, you can check here.

Maximum UV Index Levels in Si Chiang Mai for April

The chart shows the monthly maximum UV Index (UVI) for Si Chiang Mai 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 Si Chiang Mai typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131414131414141298
Data source: Si Chiang Mai 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 Si Chiang Mai Compares to Other Months

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

This table compares monthly weather conditions in Si Chiang Mai, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)6 mm (0.2 inches)52%very high
February Weather25°C (76°F)17 mm (0.7 inches)49%extreme
March Weather28°C (82°F)41 mm (1.6 inches)39%extreme
April Weather29°C (85°F)70 mm (2.8 inches)40%extreme
May Weather29°C (85°F)204 mm (8.0 inches)69%extreme
June Weather29°C (85°F)309 mm (12.2 inches)81%extreme
July Weather29°C (84°F)331 mm (13.0 inches)83%extreme
August Weather28°C (83°F)402 mm (15.8 inches)87%extreme
September Weather28°C (83°F)265 mm (10.4 inches)86%extreme
October Weather28°C (82°F)129 mm (5.1 inches)74%extreme
November Weather26°C (79°F)10 mm (0.4 inches)63%very high
December Weather23°C (74°F)7 mm (0.3 inches)57%very high

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