April Weather in Cupertino

Last updated: March 2, 2024

The weather in Cupertino, United States, during April is characterized by an average temperature of 13°C (56°F). Highs can soar to 27°C (81°F), while lows may dip to 4°C (40°F). Typically, the humidity level in Cupertino throughout April hovers around 78%.

4°C (40°F)

Minimum temperature

13°C (56°F)

Average temperature

27°C (81°F)

Maximum temperature

78%

Humidity

Precipitation and Sunshine hours

In April, Cupertino averages 37 mm (1.4 inches) of rainfall, typically over the course of 4 rainy days. The month enjoys an average of 13 hours 10 minutes of daylight, with the sun shining for approximately 10 hours 5 minutes each day. Additionally, there is a 56% probability of sunny days during this period.

37 mm (1.4 inches)

Precipitation

4 rainy days

Rainy days

10 hours 5 minutes

Sunshine hours

56%

Chance of sun

UV Index

In April, the UV Index in Cupertino reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, 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 1 3 5 7 8 9 8 7 5 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 Cupertino's Climate with Cities Worldwide