January weather forecast
Chiang Mai, Thailand

Start of the year in Chiang Mai greets residents and visitors with pleasant weather. This month is characterised by dry conditions with a moderate amount of sunshine. With high temperatures slightly below 30°C (86°F), the weather feels comfortable, especially considering the relatively lower humidity of 68%. The short length of daylight, 11.1 hours, does not greatly impact the overall weather experience. January in Chiang Mai sees a minimum of rainfall, with an average rainfall of only 4mm (0.16").

Temperature

Chiang Mai's weather in January, with an average high-temperature of a still moderately hot 29.8°C (85.6°F), subtly shifts from December's 28.6°C (83.5°F). Despite the intense daytime heat, Chiang Mai sustains a steady low-temperature average of 14.9°C (58.8°F) during January.

Heat index

January's heat index is evaluated at a hot 34°C (93.2°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

The average relative humidity in January in Chiang Mai, Thailand, is 68%.

Rainfall

January is the month with the least rainfall. Rain falls for 1 days and accumulates 4mm (0.16") of precipitation.

Daylight

In January, the average length of the day is 11h and 9min.
On the first day of January, sunrise is at 06:56 and sunset at 17:57. On the last day of the month, sunrise is at 06:58 and sunset at 18:16 +07.

Sunshine

In Chiang Mai, the average sunshine in January is 8.8h.

UV index

In January, the average daily maximum UV index in Chiang Mai, Thailand, is 9. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 9 during January translates into the following guidance:
Skin and eyes are vulnerable without protection. Ensure you always take precautions. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Even on a cloudy day, a sunscreen with at least a 30 SPF should be applied generously and frequently reapplied, including after a swim or outdoor exercise.