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Monthly climate in Phongsali, Laos

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Phongsali features a humid subtropical climate (Cwa). Temperatures typically range between 16 °C (61 °F) and 25 °C (78 °F) through the year, but rarely can drop to 3 °C (37 °F) or can rise to as high as 39 °C (102 °F). The average annual precipitation amounts to about 1868 mm (73.6 inches) and receives 180 rainy days on the 1 mm (0.04 inches) threshold annually. Phongsali enjoys an average of 3244 hours of sunshine throughout the year, and daylight varies from 10 hours 49 minutes to 13 hours 25 minutes per day.

Monthly average temperatures in Phongsali, Laos

The warmest months in Phongsali are June, July and August, with daily mean temperatures ranging from 25 to 25 °C (77 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 16 to 17 °C (61 - 63 °F) throughout the day. On average each year, Phongsali experiences 240 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 Phongsali. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(84°F)		31°C
(89°F)		35°C
(96°F)		35°C
(96°F)		39°C
(102°F)		36°C
(97°F)		35°C
(95°F)		34°C
(93°F)		33°C
(92°F)		31°C
(88°F)		30°C
(86°F)		28°C
(82°F)
Mean maximum27°C
(81°F)		30°C
(85°F)		33°C
(91°F)		35°C
(95°F)		35°C
(95°F)		32°C
(90°F)		34°C
(93°F)		33°C
(92°F)		33°C
(91°F)		30°C
(87°F)		29°C
(84°F)		27°C
(81°F)
Average high23°C
(73°F)		24°C
(76°F)		29°C
(84°F)		29°C
(84°F)		30°C
(87°F)		30°C
(86°F)		29°C
(84°F)		29°C
(84°F)		29°C
(84°F)		27°C
(80°F)		25°C
(77°F)		22°C
(73°F)
Daily mean16°C
(61°F)		17°C
(63°F)		21°C
(70°F)		22°C
(72°F)		25°C
(77°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		24°C
(76°F)		22°C
(72°F)		19°C
(67°F)		16°C
(61°F)
Average low12°C
(54°F)		12°C
(53°F)		15°C
(59°F)		17°C
(64°F)		21°C
(69°F)		23°C
(73°F)		22°C
(73°F)		22°C
(72°F)		21°C
(71°F)		19°C
(67°F)		16°C
(61°F)		12°C
(53°F)
Mean minimum9°C
(48°F)		8°C
(47°F)		11°C
(52°F)		14°C
(57°F)		17°C
(64°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		19°C
(66°F)		16°C
(62°F)		12°C
(54°F)		7°C
(44°F)
Minimum5°C
(42°F)		8°C
(46°F)		10°C
(50°F)		10°C
(51°F)		15°C
(59°F)		21°C
(69°F)		21°C
(70°F)		20°C
(68°F)		16°C
(61°F)		14°C
(58°F)		11°C
(51°F)		3°C
(37°F)

Compare climate in Phongsali with other places

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

Monthly average precipitation in Phongsali, Laos

Phongsali usually has the most precipitation in June, July and August, with an average of 27 rainy days and 326 mm (12.8 inches) of precipitation per month. The driest months in Phongsali are February, November and December. On average, 42 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Phongsali. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)46 (1.8)35 (1.4)48 (1.9)179 (7.1)152 (6.0)255 (10.0)363 (14.3)361 (14.2)200 (7.9)139 (5.5)45 (1.8)45 (1.8)
Average precipitation days (≥ 1 mm)6581315262728201895

Monthly sunshine hours in Phongsali, Laos

The sunniest months in Phongsali are March, May and December, when the sun shines an average of 9 hours 50 minutes a day. Least sunny months in Phongsali: January, July and August receive an average of 7 hours 32 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Phongsali. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours207268308279319270247245267275268286
Mean daily daylight hours10h 57m11h 25m12h 1m12h 38m13h 9m13h 25m13h 17m12h 50m12h 14m11h 37m11h 5m10h 49m

Solar UV radiation in Phongsali, Laos

Phongsali experiences the highest level of ultraviolet (UV) radiation in May, July 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 Phongsali UV Index data.

Average daily maximum UV levels by month for Phongsali. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)9101212151415141412108