Last updated: June 24, 2025
In August, the average temperature in Shelter Island Heights, United States is a pleasant 23°C (73°F). Expect a range with a minimum of 17°C (63°F) and a maximum of 27°C (80°F). Be prepared for some rain, as 103 mm (4.0 in) of precipitation is expected over about 9 days, contributing to an average humidity of 76%.
In August in Shelter Island Heights, the average temperature is 23°C (73°F), with maximums reaching 27°C (80°F) and minimums dipping as low as 17°C (63°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.
In Shelter Island Heights in August, the precipitation amount is 103 mm (4.0 in) over the course of 9 days.
In Shelter Island Heights in August humidity is 76%. With an average temperature of 23°C (73°F), this humidity feels like a warm, enveloping blanket, making outdoor activities feel more intense and prompting travelers to seek shade or cool breaks more frequently.
In Shelter Island Heights in August, 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 August’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 |