Last updated: June 24, 2025
In April, the average temperature in Setauket-East Setauket, United States hovers around 9°C (49°F). Expect a range from a chilly -1°C (31°F) to a pleasant 22°C (71°F). With an average precipitation of 132 mm (5.2 in) spread over 12 days, be prepared for some wet weather. The air is typically 78% humid, adding a touch of mugginess to your daily outings.
In April in Setauket-East Setauket, the average temperature is 9°C (49°F). Maximums can reach 22°C (71°F) and minimums can be as low as -1°C (31°F). Be prepared for a mix of mild and chilly weather when planning your travels.
In Setauket-East Setauket in April, the precipitation amount is 132 mm (5.2 in) over the course of 12 days.
In Setauket-East Setauket in April, humidity is 78%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while traveling, as the cool air combines with the moisture to create a brisk and invigorating atmosphere.
In Setauket-East Setauket in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Setauket-East Setauket.
UV Risk Categories
Weather in Setauket-East Setauket varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Setauket-East Setauket, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 80 mm (3.1 inches) | 84% | moderate |
| February Weather | 2°C (36°F) | 112 mm (4.4 inches) | 82% | moderate |
| March Weather | 4°C (40°F) | 104 mm (4.1 inches) | 81% | high |
| April Weather | 9°C (49°F) | 132 mm (5.2 inches) | 78% | very high |
| May Weather | 14°C (58°F) | 119 mm (4.7 inches) | 69% | very high |
| June Weather | 20°C (68°F) | 87 mm (3.4 inches) | 69% | very high |
| July Weather | 24°C (76°F) | 131 mm (5.2 inches) | 62% | very high |
| August Weather | 24°C (75°F) | 103 mm (4.0 inches) | 65% | very high |
| September Weather | 21°C (70°F) | 94 mm (3.7 inches) | 68% | very high |
| October Weather | 16°C (61°F) | 143 mm (5.6 inches) | 74% | high |
| November Weather | 9°C (49°F) | 103 mm (4.0 inches) | 82% | moderate |
| December Weather | 5°C (40°F) | 140 mm (5.5 inches) | 80% | low |