Chiang Mai weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
January
February
March
April
May
June
July
August
September
October
November
December
Overview
Chiang Mai weather and climate in 2025
January
February
March
April
May
June
July
August
September
October
November
December
Overview
January
February
March
April
May
June
July
August
September
October
November
December
Overview
Day
31 °C
Night
23 °C
Precipitation
197 mm
in month
Rainy days
23 days
in month
Daylight
13 hours
average
Sunshine
5 hours
average
Humidity
81 %
Day
31 °C
Night
23 °C
Precipitation
197 mm
in month
Rainy days
23 days
in month
Daylight
13 hours
average
Sunshine
5 hours
average
Humidity
81 %
Overview: Chiang Mai
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Activities in Chiang Mai
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Weather overview for Chiang Mai
Weather overview
The beautiful city of Chiang Mai in Thailand is known for its distinct tropical climate, which is characterized by a marked variation in daily temperatures and rainfall patterns throughout the year. Minimum temperatures during the nighttime can dip to approximately 13 °C (56 °F) in January, rising gradually to a peak of 23 °C (74 °F) by July. The daytime temperatures start at a milder 28 °C (83 °F) in December and soar to a sweltering 37 °C (98 °F) by April. Notably, February stands as the driest month, with barely 1 day of rain, while August reigns as the most precipitous, receiving rain on a whopping 23 days. The aforementioned data encapsulates the range of weather metrics that Chiang Mai experiences, providing invaluable insights into the sunny hours, humidity levels, and wind speeds that travelers and residents can anticipate.
January weather
January is near the zenith of tourist season in Chiang Mai, and the onset of the dry season is also apparent. The increase in daytime temperature is noticeable at 30 °C (85 °F), while the lowest nighttime temperature for the year occurs this month. The minimum rainfall is also observed.
February weather
As the tourist season persists, the prevailing dry climate of Chiang Mai becomes more evident. The daytime temperature continues to ascend to 33 °C (91 °F), and an increase in nighttime temperature can also be observed at 15 °C (59 °F). The minimal number of rainy days is conspicuous by its value of 1 day, and the highest count of sunlit hours without clouds has been achieved at 10 hours.
March weather
The tourist season is at its peak this month in Chiang Mai. There is an uptick in both the number of rainy days and the accumulated rainfall amount, with the latter measuring 20 mm (0.80 in). A continued increase in daily high temperatures is apparent, reaching 35 °C (95 °F), alongside a notable rise in nighttime lows at 19 °C (65 °F). The humidity hits its yearly nadir, reported to be 53 %.
April weather
The tourist season prolongs, and the dry season extends into April in Chiang Mai. Rainy days become more frequent, reaching 7 days, and the amount of rainfall reflects a similar trend, amounting to 51 mm (2.00 in). The peak daytime temperature can be felt intensely at 37 °C (98 °F), while the nighttime temperature continues its ascent, marked at 22 °C (72 °F).
May weather
In May, the onset of the wet season begins to be felt in Chiang Mai. There is a discernible decrease in daytime temperatures, while nighttime warmth continues to rise, noted at 23 °C (73 °F). A rise in both the volume of rainfall at 165 mm (6.48 in) and the number of rainy days, marked at 18 days, is observed, alongside a decrease in sunlit hours, arriving at 8 hours.
June weather
With the daytime temperatures dipping to 33 °C (91 °F), June brings a noticeable decline. The number of rainy days sees an upward trend, while the rainfall quantity starts decreasing, registering at 125 mm (4.93 in). The hours of sunshine continue to wane, recorded at 6 hours, and daylight length reaches its highest point. The wet season extends through the period.
July weather
As the daytime heat registers a downward trend, notching 31 °C (89 °F), the highest nighttime temperatures can be observed, peaking at 23 °C (74 °F). The increment in the tally of wet days is noted, rising to 21 days, with an emergence of increased rainfall amounts. Chiang Mai remains in the midst of the wet season, and the hours of sunlight continue to diminish, indicated by 5 hours.
August weather
August witnesses a continuation in the decline of daytime temperatures, settling at 31 °C (88 °F). The wet season persists with rainy days peaking at 23 days, and rainfall amounts also reach their highest, as recorded in August. The hours of sunshine attain their lowest for the year, noted at 5 hours.
September weather
September signals the pending conclusion of the wet season in Chiang Mai. A downward trajectory is observed in the count of rainy days at 20 days, and similarly, the volume of rainfall also starts subsiding, as recorded by 190 mm (7.48 in). The stretch of sunlight hours begins to expand, measuring at 6 hours. Peak humidity levels are found during this month, and a slight dip in nighttime temperatures is also visible, marked at 23 °C (73 °F).
October weather
In October, the rainfall continues its descent, with Chiang Mai recording 112 mm (4.39 in), and a decrease in the number of rainy days can also be seen at 14 days. A reduction in nighttime temperatures is notable, settling at 22 °C (71 °F). An increase in sunlight hours is paralleled in the prior month, represented by 7 hours.
November weather
The beginning of the tourist season can be felt in November, as Chiang Mai's daytime temperature begins to decline, noted at 30 °C (86 °F). The downward movement in nighttime temperature is also detected at 19 °C (65 °F). The drop-off in rainfall becomes apparent, and rainy days also witness a decrease, reflected by 5 days. Wind speeds attain their minimum during November.
December weather
December approaches with an impending rise in tourist activity in Chiang Mai. There is a marked decline in the frequency of rainy days, reaching 2 days, and rainfall also sees a decline akin to the previous month. The coldest daytime temperatures for the year are observed, set at 28 °C (83 °F), while nighttime temperatures also undergo a descent, recorded at 14 °C (58 °F). An upturn in sunshine hours is noted, measured at 8 hours.
FAQs
How many hours of sunshine are expected in January?
January in Chiang Mai typically sees approximately 9 hours of sunshine.
What is the nighttime air temperature in Chiang Mai during February?
In February, the average nighttime air temperature in Chiang Mai hovers about 15 °C (59 °F).
Are the weather conditions in March suitable for travel in Chiang Mai?
March in Chiang Mai boasts ideal conditions for a getaway, with night temperatures maintaining a comfortable average of 19 °C (65 °F) and scant rainfall spanning only 2 days.
How many days of rain can I anticipate in Chiang Mai during April?
Expect around 7 days of rainfall throughout April in Chiang Mai.
Is May within the wet season in Chiang Mai?
May falls within the wet season of Chiang Mai with increasing rainfall and 18 days of precipitation.
Does the wet season continue through June in Chiang Mai?
Indeed, the wet season lingers in June with numerous rainy days and 125 mm (4.93 in) of rainfall.
Are there many rainy days in Chiang Mai during July?
Chiang Mai sees a considerable number of rainy days in July, with up to 21 days documented with precipitation.
What is the level of humidity in Chiang Mai during August?
Relative humidity in August in Chiang Mai typically rests at 81 %, which may be high.
Does September still fall within the wet season in Chiang Mai?
September persistently remains within the wet period of Chiang Mai, enduring a significant number of rainy days at 20 days.
How strong are the winds generally in Chiang Mai during October?
Wind speeds in October in Chiang Mai are generally mild, averaging 1 m/s, and should not be disruptive.
What are Chiang Mai's typical day temperatures in November?
In November, one can expect the daytime temperature in Chiang Mai to average around 30 °C (86 °F).
Is December considered hot in Chiang Mai?
December in Chiang Mai features agreeably warm weather, with temperatures far from being excessively hot.
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