Last updated: August 31, 2025
In Brooklyn, New Zealand, the average temperature in September hovers around 11°C (52°F), providing a mild backdrop for your adventures. Expect minimums dipping to 7°C (44°F) and maximums reaching up to 15°C (59°F). Be prepared for the occasional shower, as precipitation averages 85 mm (3.4 in) over 12 days of the month, and the air can feel quite humid with an average humidity of 83%. Embrace the charm of the season!
In September, in Brooklyn, the average temperature is 11°C (52°F). The maximum can reach 15°C (59°F), while the minimum can dip as low as 7°C (44°F). This mild weather makes Brooklyn a pleasant destination for travelers looking to enjoy cool, comfortable conditions.
In Brooklyn in September, the precipitation amount is 85 mm (3.4 in) over the course of 12 days.
In Brooklyn in September humidity is 83%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, often leading travelers to seek shelter indoors or to dress in layered clothing to stay warm while exploring the area.
In Brooklyn in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Brooklyn, you can refer to this Hourly UV Index in Brooklyn.
UV Risk Categories
Weather in Brooklyn varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Brooklyn, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 17°C (62°F) | 33 mm (1.3 inches) | 79% | extreme |
| February Weather | 17°C (63°F) | 69 mm (2.7 inches) | 79% | extreme |
| March Weather | 16°C (61°F) | 76 mm (3.0 inches) | 79% | very high |
| April Weather | 15°C (59°F) | 104 mm (4.1 inches) | 80% | high |
| May Weather | 13°C (56°F) | 88 mm (3.5 inches) | 84% | moderate |
| June Weather | 12°C (53°F) | 101 mm (4.0 inches) | 86% | low |
| July Weather | 11°C (52°F) | 108 mm (4.3 inches) | 86% | low |
| August Weather | 11°C (52°F) | 89 mm (3.5 inches) | 83% | moderate |
| September Weather | 11°C (52°F) | 85 mm (3.4 inches) | 83% | high |
| October Weather | 12°C (55°F) | 72 mm (2.8 inches) | 82% | very high |
| November Weather | 14°C (57°F) | 73 mm (2.9 inches) | 82% | very high |
| December Weather | 16°C (61°F) | 101 mm (4.0 inches) | 81% | extreme |