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Monthly climate in Muang Xay, Laos

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Muang Xay features a humid subtropical climate (Cwa). Temperatures typically range between 17 °C (63 °F) and 26 °C (79 °F) through the year, but rarely can drop to 4 °C (39 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 1747 mm (68.8 inches) and receives 177 rainy days on the 1 mm (0.04 inches) threshold annually. Muang Xay enjoys an average of 3317 hours of sunshine throughout the year, and daylight varies from 10 hours 53 minutes to 13 hours 21 minutes per day.

Monthly average temperatures in Muang Xay, Laos

The warmest months in Muang Xay are May, June and July, with daily mean temperatures ranging from 25 to 26 °C (78 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 17 to 18 °C (63 - 65 °F) throughout the day. On average each year, Muang Xay experiences 266 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 Muang Xay. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum30°C
(87°F)		32°C
(89°F)		35°C
(96°F)		36°C
(98°F)		38°C
(101°F)		37°C
(98°F)		36°C
(97°F)		34°C
(93°F)		33°C
(92°F)		32°C
(90°F)		31°C
(87°F)		29°C
(84°F)
Mean maximum28°C
(83°F)		31°C
(87°F)		33°C
(92°F)		35°C
(95°F)		35°C
(95°F)		33°C
(91°F)		34°C
(93°F)		32°C
(90°F)		33°C
(91°F)		31°C
(88°F)		30°C
(86°F)		28°C
(83°F)
Average high24°C
(75°F)		26°C
(79°F)		30°C
(86°F)		30°C
(86°F)		31°C
(88°F)		30°C
(86°F)		29°C
(85°F)		29°C
(84°F)		29°C
(85°F)		27°C
(82°F)		26°C
(79°F)		24°C
(75°F)
Daily mean17°C
(63°F)		18°C
(65°F)		22°C
(72°F)		23°C
(74°F)		25°C
(78°F)		26°C
(79°F)		25°C
(78°F)		25°C
(77°F)		25°C
(76°F)		23°C
(73°F)		20°C
(69°F)		17°C
(63°F)
Average low13°C
(55°F)		13°C
(55°F)		17°C
(62°F)		19°C
(66°F)		22°C
(71°F)		23°C
(74°F)		23°C
(73°F)		22°C
(72°F)		22°C
(71°F)		20°C
(68°F)		17°C
(62°F)		13°C
(55°F)
Mean minimum9°C
(49°F)		9°C
(49°F)		13°C
(55°F)		14°C
(58°F)		18°C
(66°F)		21°C
(71°F)		21°C
(70°F)		21°C
(70°F)		20°C
(68°F)		16°C
(61°F)		13°C
(56°F)		7°C
(46°F)
Minimum6°C
(42°F)		7°C
(45°F)		11°C
(53°F)		11°C
(52°F)		16°C
(61°F)		21°C
(70°F)		21°C
(70°F)		21°C
(69°F)		17°C
(62°F)		14°C
(58°F)		12°C
(53°F)		4°C
(39°F)

Compare climate in Muang Xay with other places

Compare temperature, precipitation, sunshine, UV index in Muang Xay, Laos with other places around the world.

Monthly average precipitation in Muang Xay, Laos

Muang Xay usually has the most precipitation in June, July and August, with an average of 27 rainy days and 301 mm (11.9 inches) of precipitation per month. The driest months in Muang Xay are February, November and December. On average, 27 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Muang Xay. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)48 (1.9)22 (0.9)47 (1.8)180 (7.1)147 (5.8)236 (9.3)292 (11.5)376 (14.8)223 (8.8)118 (4.7)35 (1.4)24 (0.9)
Average precipitation days (≥ 1 mm)5371517252729211864

Monthly sunshine hours in Muang Xay, Laos

The sunniest months in Muang Xay are March, May and December, when the sun shines an average of 9 hours 58 minutes a day. Least sunny months in Muang Xay: January, July and August receive an average of 7 hours 41 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Muang Xay. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours216281311282321273257241271283282294
Mean daily daylight hours11h 0m11h 27m12h 1m12h 36m13h 6m13h 21m13h 13m12h 47m12h 14m11h 38m11h 8m10h 53m

Solar UV radiation in Muang Xay, Laos

Muang Xay experiences the highest level of ultraviolet (UV) radiation in July, August and September, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. January, February and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 10. For more detailed information, check out our hourly Muang Xay UV Index data.

Average daily maximum UV levels by month for Muang Xay. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)9101313141415141413108