Last updated: June 24, 2025
In September, the average temperature in East Hampton, United States hovers around 24°C (75°F), offering a pleasant climate for visitors. Temperatures can vary between a minimum of 14°C (57°F) and a maximum of 35°C (94°F), catering to a range of preferences. However, be prepared for some rain, as the area experiences 114 mm (4.5 in) of precipitation over approximately 11 days. With an average humidity of 78%, it’s wise to stay hydrated and enjoy the vibrant atmosphere!
In September in East Hampton, the average temperature is 24°C (75°F). Maximums can reach 35°C (94°F) and minimums can be as low as 14°C (57°F). This makes it an excellent time to explore East Hampton, as you can enjoy pleasant weather while participating in a variety of outdoor activities.
In East Hampton in September, the total precipitation amount is 114 mm (4.5 in) spread over 11 days.
In East Hampton in September humidity is 78%. With an average temperature of 24°C (75°F), this humidity feels like a warm blanket wrapping around you, making travel sticky and heavy but also inviting, as long as you're prepared with plenty of water and light clothing.
In East Hampton in September, 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 East Hampton.
UV Risk Categories
Weather in East Hampton varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in East Hampton, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 6°C (42°F) | 92 mm (3.6 inches) | 84% | moderate |
| February Weather | 8°C (46°F) | 110 mm (4.3 inches) | 83% | high |
| March Weather | 10°C (50°F) | 84 mm (3.3 inches) | 82% | high |
| April Weather | 15°C (59°F) | 98 mm (3.9 inches) | 81% | very high |
| May Weather | 20°C (68°F) | 111 mm (4.4 inches) | 80% | very high |
| June Weather | 24°C (76°F) | 105 mm (4.1 inches) | 82% | very high |
| July Weather | 27°C (81°F) | 126 mm (5.0 inches) | 81% | extreme |
| August Weather | 26°C (79°F) | 138 mm (5.4 inches) | 81% | very high |
| September Weather | 24°C (75°F) | 114 mm (4.5 inches) | 78% | very high |
| October Weather | 19°C (66°F) | 89 mm (3.5 inches) | 80% | very high |
| November Weather | 12°C (53°F) | 80 mm (3.2 inches) | 84% | moderate |
| December Weather | 8°C (47°F) | 93 mm (3.7 inches) | 84% | moderate |