May Weather in Riverhead

Last updated: March 2, 2024

The weather in Riverhead, United States, during May is characterized by an average temperature of 14°C (58°F). Highs can soar to 24°C (76°F), while lows may dip to 7°C (44°F). Typically, the humidity level in Riverhead throughout May hovers around 69%.

7°C (44°F)

Minimum temperature

14°C (58°F)

Average temperature

24°C (76°F)

Maximum temperature

69%

Humidity

Precipitation and Sunshine hours

In May, Riverhead averages 114 mm (4.5 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 14 hours 28 minutes of daylight, with the sun shining for approximately 9 hours 19 minutes each day. Additionally, there is a 44% probability of sunny days during this period.

114 mm (4.5 inches)

Precipitation

13 rainy days

Rainy days

9 hours 19 minutes

Sunshine hours

44%

Chance of sun

UV Index

In May, the UV Index in Riverhead 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 9 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 Riverhead's Climate with Cities Worldwide