Last updated: June 24, 2025
In May, the average temperature in Shelter Island Heights, United States is a mild 12°C (54°F), with lows dipping to 4°C (39°F) and highs reaching up to 20°C (69°F). Expect approximately 129 mm (5.1 in) of precipitation spread across 13 days, contributing to an average humidity of 75%. Stay prepared for a mix of cozy days and refreshing rain!
In May in Shelter Island Heights, the average temperature is 12°C (54°F). Maximums can reach 20°C (69°F) and minimums can be as low as 4°C (39°F). This mild weather makes it an ideal time for traveling, allowing visitors to explore comfortably while enjoying the sights.
In Shelter Island Heights in May, the precipitation amount is 129 mm (5.1 in) over the course of 13 days.
In Shelter Island Heights in May, humidity is 75%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill that seeps into your bones, making it essential to layer your clothing for comfort while exploring.
In Shelter Island Heights in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Shelter Island Heights.
UV Risk Categories
Weather in Shelter Island Heights varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Shelter Island Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (37°F) | 89 mm (3.5 inches) | 84% | moderate |
| February Weather | 3°C (37°F) | 123 mm (4.8 inches) | 84% | moderate |
| March Weather | 4°C (39°F) | 113 mm (4.5 inches) | 82% | high |
| April Weather | 8°C (47°F) | 137 mm (5.4 inches) | 79% | very high |
| May Weather | 12°C (54°F) | 129 mm (5.1 inches) | 75% | very high |
| June Weather | 18°C (64°F) | 72 mm (2.9 inches) | 78% | very high |
| July Weather | 22°C (72°F) | 99 mm (3.9 inches) | 76% | very high |
| August Weather | 23°C (73°F) | 103 mm (4.0 inches) | 76% | very high |
| September Weather | 20°C (69°F) | 99 mm (3.9 inches) | 75% | very high |
| October Weather | 16°C (61°F) | 160 mm (6.3 inches) | 75% | high |
| November Weather | 10°C (50°F) | 113 mm (4.4 inches) | 80% | moderate |
| December Weather | 5°C (42°F) | 147 mm (5.8 inches) | 80% | low |