September Weather in East Brooklyn, United States

Last updated: June 24, 2025

In September, the average temperature in East Brooklyn, United States hovers around 19°C (66°F), creating a comfortable atmosphere for outdoor activities. Expect a minimum temperature of 4°C (39°F) and a maximum of 34°C (93°F), offering a wide range for weather enthusiasts. Be prepared for some rain, as precipitation totals 97 mm (3.8 in) over about 9 days. With an average humidity level of 75%, East Brooklyn exhibits a warm and inviting climate perfect for exploration.

September Temperature in East Brooklyn

In September in East Brooklyn, the average temperature is 19°C (66°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 4°C (39°F). It's a wonderful time for travelers to experience comfortable weather while enjoying outdoor activities.

September Weather in East Brooklyn: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in East Brooklyn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In East Brooklyn, September typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (93°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec303338485868747366564234
Data source: Temperature data for East Brooklyn generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in East Brooklyn

In East Brooklyn in September, the total precipitation amount reaches 97 mm (3.8 in) over the course of 9 days.

September Precipitation Trends in East Brooklyn

The chart displays monthly precipitation patterns in East Brooklyn, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In East Brooklyn, September typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec70889512911110216612397135100129
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in East Brooklyn

In East Brooklyn in September humidity is 75%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it slightly uncomfortable for traveling as you navigate through the thick, muggy air.

September Average Humidity in East Brooklyn

This chart illustrates the average monthly humidity levels in East Brooklyn, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in East Brooklyn is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in East Brooklyn

In East Brooklyn 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 Brooklyn.

Maximum UV Index Levels in East Brooklyn for September

The chart shows the monthly maximum UV Index (UVI) for East Brooklyn in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in East Brooklyn typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: East Brooklyn September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in East Brooklyn Compares to Other Months

Weather in East Brooklyn varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in East Brooklyn, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in East Brooklyn, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)70 mm (2.7 inches)84%moderate
February Weather1°C (33°F)88 mm (3.5 inches)84%moderate
March Weather3°C (38°F)94 mm (3.7 inches)82%high
April Weather9°C (48°F)129 mm (5.1 inches)79%very high
May Weather15°C (59°F)111 mm (4.4 inches)75%very high
June Weather20°C (68°F)102 mm (4.0 inches)78%very high
July Weather23°C (74°F)166 mm (6.5 inches)76%very high
August Weather23°C (73°F)123 mm (4.8 inches)76%very high
September Weather19°C (66°F)97 mm (3.8 inches)75%very high
October Weather13°C (56°F)135 mm (5.3 inches)75%high
November Weather6°C (43°F)100 mm (3.9 inches)80%moderate
December Weather1°C (34°F)129 mm (5.1 inches)80%low

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