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Monthly climate in San Juan, Panama

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Juan features a tropical monsoon climate (Am). Temperatures typically range between 25 °C (77 °F) and 27 °C (81 °F) through the year, but rarely can drop to 20 °C (68 °F) or can rise to as high as 36 °C (96 °F). The average annual precipitation amounts to about 2979 mm (117.3 inches) and receives 222 rainy days on the 1 mm (0.04 inches) threshold annually. San Juan enjoys an average of 3029 hours of sunshine throughout the year, and daylight varies from 11 hours 38 minutes to 12 hours 34 minutes per day.

Monthly average temperatures in San Juan, Panama

The warmest months in San Juan are February, March and April, with daily mean temperatures ranging from 27 to 27 °C (80 - 81 °F) throughout the day. The coldest temperatures usually occur in September, October and November, when daily mean temperatures range from 25 to 25 °C (77 - 78 °F) throughout the day. On average each year, San Juan experiences 329 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 San Juan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum33°C
(91°F)		34°C
(94°F)		34°C
(94°F)		36°C
(96°F)		35°C
(96°F)		33°C
(92°F)		33°C
(92°F)		33°C
(91°F)		32°C
(91°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)
Mean maximum32°C
(89°F)		33°C
(92°F)		34°C
(93°F)		35°C
(94°F)		33°C
(92°F)		32°C
(90°F)		32°C
(91°F)		32°C
(91°F)		32°C
(90°F)		31°C
(89°F)		31°C
(88°F)		31°C
(89°F)
Average high30°C
(87°F)		31°C
(89°F)		32°C
(89°F)		32°C
(90°F)		30°C
(87°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		29°C
(84°F)		29°C
(84°F)		30°C
(86°F)
Daily mean26°C
(79°F)		27°C
(80°F)		27°C
(81°F)		27°C
(81°F)		26°C
(79°F)		26°C
(78°F)		26°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		26°C
(78°F)
Average low22°C
(73°F)		23°C
(73°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(73°F)		23°C
(73°F)		23°C
(73°F)		22°C
(73°F)		23°C
(73°F)
Mean minimum21°C
(69°F)		21°C
(70°F)		22°C
(71°F)		22°C
(71°F)		22°C
(71°F)		22°C
(71°F)		22°C
(71°F)		21°C
(71°F)		21°C
(71°F)		21°C
(70°F)		21°C
(71°F)		21°C
(70°F)
Minimum20°C
(68°F)		20°C
(68°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		20°C
(68°F)		21°C
(70°F)		21°C
(70°F)		21°C
(69°F)		21°C
(70°F)		20°C
(69°F)

Compare climate in San Juan with other places

Compare temperature, precipitation, sunshine, UV index in San Juan, Panama with other places around the world.

Monthly average precipitation in San Juan, Panama

San Juan usually has the most precipitation in July, September and October, with an average of 29 rainy days and 425 mm (16.7 inches) of precipitation per month. The driest months in San Juan are January, February and March. On average, 15 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Juan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)31 (1.2)8 (0.3)7 (0.3)105 (4.1)355 (14.0)353 (13.9)404 (15.9)359 (14.1)459 (18.1)410 (16.2)385 (15.1)103 (4.1)
Average precipitation days (≥ 1 mm)40012272828293029269

Monthly sunshine hours in San Juan, Panama

The sunniest months in San Juan are March, April and December, when the sun shines an average of 10 hours 10 minutes a day. Least sunny months in San Juan: June, July and August receive an average of 6 hours 50 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Juan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours254299335300228212210207216224239300
Mean daily daylight hours11h 41m11h 51m12h 4m12h 17m12h 29m12h 34m12h 31m12h 21m12h 8m11h 55m11h 44m11h 38m

Solar UV radiation in San Juan, Panama

San Juan experiences the highest level of ultraviolet (UV) radiation in April, May and September, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. January, November and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 12. For more detailed information, check out our hourly San Juan UV Index data.

Average daily maximum UV levels by month for San Juan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)121314151513141314141211