May Weather in Juneau

Last updated: March 2, 2024

The weather in Juneau, United States, during May is characterized by an average temperature of 15°C (59°F). Highs can soar to 31°C (87°F), while lows may dip to 1°C (34°F). Typically, the humidity level in Juneau throughout May hovers around 78%.

1°C (34°F)

Minimum temperature

15°C (59°F)

Average temperature

31°C (87°F)

Maximum temperature

78%

Humidity

Precipitation and Sunshine hours

In May, Juneau averages 120 mm (4.7 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 14 hours 42 minutes of daylight, with the sun shining for approximately 9 hours 0 minutes each day. Additionally, there is a 36% probability of sunny days during this period.

120 mm (4.7 inches)

Precipitation

13 rainy days

Rainy days

9 hours 0 minutes

Sunshine hours

36%

Chance of sun

UV Index

In May, the UV Index in Juneau reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 15 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 2 4 6 8 9 9 8 6 4 3 1 1
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

Compare Juneau's Climate with Cities Worldwide