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Monthly climate in Mae Sai, Chiang Rai, Thailand

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Mae Sai features a tropical savanna climate (Aw).Temperatures typically range between 20 °C (68 °F) and 28 °C (82 °F) through the year, but rarely can drop to 6 °C (44 °F) or can rise to as high as 41 °C (107 °F).The average annual precipitation amounts to about 2035 mm (80.1 inches) and receives 177 rainy days on the 1 mm (0.04 inches) threshold annually.Mae Sai enjoys an average of 3405 hours of sunshine throughout the year, and daylight varies from 10 hours 54 minutes to 13 hours 20 minutes per day.

Monthly average temperatures in Mae Sai, Chiang Rai, Thailand §

The warmest months in Mae Sai are May, June and July, with daily mean temperatures ranging from 27 to 28 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 20 to 21 °C (68 - 71 °F) throughout the day. On average each year, Mae Sai experiences 313 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Mae Sai, Chiang Rai, Thailand.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 32°C
(90°F)		 35°C
(95°F)		 38°C
(101°F)		 40°C
(105°F)		 41°C
(107°F)		 38°C
(101°F)		 38°C
(100°F)		 36°C
(98°F)		 37°C
(98°F)		 35°C
(94°F)		 34°C
(93°F)		 31°C
(89°F)
Mean maximum 31°C
(88°F)		 34°C
(93°F)		 37°C
(98°F)		 38°C
(102°F)		 38°C
(100°F)		 35°C
(95°F)		 36°C
(96°F)		 35°C
(95°F)		 35°C
(95°F)		 34°C
(93°F)		 33°C
(91°F)		 31°C
(88°F)
Average high 27°C
(82°F)		 30°C
(87°F)		 34°C
(94°F)		 34°C
(93°F)		 34°C
(93°F)		 32°C
(90°F)		 31°C
(89°F)		 31°C
(88°F)		 32°C
(89°F)		 31°C
(87°F)		 30°C
(86°F)		 27°C
(81°F)
Daily mean 20°C
(68°F)		 21°C
(71°F)		 25°C
(77°F)		 27°C
(80°F)		 28°C
(82°F)		 28°C
(82°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 26°C
(78°F)		 23°C
(74°F)		 20°C
(68°F)
Average low 14°C
(58°F)		 14°C
(58°F)		 18°C
(64°F)		 21°C
(70°F)		 23°C
(74°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(75°F)		 22°C
(72°F)		 19°C
(66°F)		 14°C
(58°F)
Mean minimum 11°C
(52°F)		 11°C
(51°F)		 13°C
(56°F)		 17°C
(63°F)		 21°C
(70°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 22°C
(72°F)		 20°C
(68°F)		 15°C
(59°F)		 9°C
(48°F)
Minimum 8°C
(47°F)		 10°C
(50°F)		 11°C
(52°F)		 16°C
(60°F)		 20°C
(69°F)		 23°C
(73°F)		 23°C
(73°F)		 23°C
(73°F)		 20°C
(68°F)		 18°C
(65°F)		 14°C
(57°F)		 6°C
(44°F)

Compare climate in Mae Sai with other places

Compare temperature, precipitation, sunshine, UV index in Mae Sai, Chiang Rai, Thailand with other places around the world.

Monthly average precipitation in Mae Sai, Chiang Rai, Thailand §

Mae Sai usually has the most precipitation in June, July and August, with an average of 27 rainy days and 383 mm (15.1 inches) of precipitation per month.The driest months in Mae Sai are February, March and December. On average, 23 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mae Sai, Chiang Rai, Thailand.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 44 (1.7) 18 (0.7) 17 (0.7) 125 (4.9) 167 (6.6) 348 (13.7) 372 (14.7) 430 (16.9) 272 (10.7) 158 (6.2) 49 (1.9) 35 (1.4)
Average precipitation days (≥ 1 mm) 6 2 3 11 18 26 28 27 23 20 9 4

Monthly sunshine hours in Mae Sai, Chiang Rai, Thailand §

The sunniest months in Mae Sai are March, April and May, when the sun shines an average of 10 hours 27 minutes a day.Least sunny months in Mae Sai: January, July and August receive an average of 7 hours 49 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mae Sai, Chiang Rai, Thailand.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 235 290 328 309 323 271 248 243 270 286 294 302
Mean daily daylight hours 11h 1m 11h 27m 12h 1m 12h 36m 13h 5m 13h 20m 13h 12m 12h 47m 12h 13m 11h 39m 11h 9m 10h 54m

Solar UV radiation in Mae Sai, Chiang Rai, Thailand §

Mae Sai experiences the highest level of ultraviolet (UV) radiation in May, August and September, when the maximum UV index can reach values of 14 - 14, which corresponds to the Extreme category of sun exposure.January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Mae Sai UV Index data.

Average daily maximum UV levels by month for Mae Sai, Chiang Rai, Thailand.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 9 10 13 12 14 14 14 14 14 12 9 8