June Weather in San Juan

Last updated: March 2, 2024

The weather in San Juan, United States, during June is characterized by an average temperature of 30°C (86°F). Highs can soar to 39°C (102°F), while lows may dip to 22°C (73°F). Typically, the humidity level in San Juan throughout June hovers around 73%.

22°C (73°F)

Minimum temperature

30°C (86°F)

Average temperature

39°C (102°F)

Maximum temperature

73%

Humidity

Precipitation and Sunshine hours

In June, San Juan averages 81 mm (3.2 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 13 hours 44 minutes of daylight, with the sun shining for approximately 11 hours 7 minutes each day. Additionally, there is a 50% probability of sunny days during this period.

81 mm (3.2 inches)

Precipitation

11 rainy days

Rainy days

11 hours 7 minutes

Sunshine hours

50%

Chance of sun

UV Index

In June, the UV Index in San Juan reaches a maximum of 12, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 1 3 5 8 10 12 12 10 7 5 2 1
Exposure Low Moderate VeryHigh Extreme VeryHigh High Moderate Low
Time to burn 45 min 30 min 15 min 10 min 15 min 25 min 30 min 45 min

Compare San Juan's Climate with Cities Worldwide