April Weather in Hilo

Last updated: March 2, 2024

The weather in Hilo, United States, during April is characterized by an average temperature of 22°C (71°F). Highs can soar to 25°C (77°F), while lows may dip to 19°C (67°F). Typically, the humidity level in Hilo throughout April hovers around 80%.

19°C (67°F)

Minimum temperature

22°C (71°F)

Average temperature

25°C (77°F)

Maximum temperature

80%

Humidity

Precipitation and Sunshine hours

In April, Hilo averages 195 mm (7.7 inches) of rainfall, typically over the course of 25 rainy days. The month enjoys an average of 12 hours 36 minutes of daylight, with the sun shining for approximately 9 hours 28 minutes each day. Additionally, there is a 42% probability of sunny days during this period.

195 mm (7.7 inches)

Precipitation

25 rainy days

Rainy days

9 hours 28 minutes

Sunshine hours

42%

Chance of sun

UV Index

In April, the UV Index in Hilo reaches a maximum of 13, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, 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 3 6 9 12 13 13 10 7 4 2 1 0
Exposure Low Moderate High VeryHigh Extreme VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 10 min 15 min 25 min 30 min 45 min

Compare Hilo's Climate with Cities Worldwide