September Weather in Sandy Hook, United States

Last updated: June 24, 2025

In Sandy Hook, United States, the average temperature in September hovers around 21°C (71°F). Expect a minimum of 8°C (46°F) and a maximum of 37°C (98°F), making it a month of considerable variation. During this time, anticipate about 110 mm (4.3 in) of precipitation spread over 8 days, all while enjoying an average humidity of 67%.

September Temperature in Sandy Hook

In September in Sandy Hook, the average temperature is 21°C (71°F), with maximums reaching up to 37°C (98°F) and minimums dropping as low as 8°C (46°F). This variety in temperature makes Sandy Hook an appealing destination for travelers seeking both warm days and cooler evenings.

September Weather in Sandy Hook: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sandy Hook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sandy Hook, September typically has an average temperature of 21°C (71°F), with highs reaching up to 37°C (98°F) and lows dropping to around 8°C (46°F).

Data source: Temperature data for Sandy Hook generated using information from the Copernicus Climate Change Service.

September Precipitation in Sandy Hook

In Sandy Hook in September, the precipitation amount is 110 mm (4.3 in) over a period of 8 days.

September Precipitation Trends in Sandy Hook

The chart displays monthly precipitation patterns in Sandy Hook, 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 Sandy Hook, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Sandy Hook

In Sandy Hook in September humidity is 67%. With an average temperature of 21°C (71°F), this humidity feels like a warm blanket wrapping around you, making traveling both refreshing and a bit stifling at times, as the air clings to your skin and encourages slow, leisurely exploration.

September Average Humidity in Sandy Hook

This chart illustrates the average monthly humidity levels in Sandy Hook, 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 Sandy Hook is approximately 67%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sandy Hook

In Sandy Hook in September, 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 Sandy Hook.

Maximum UV Index Levels in Sandy Hook for September

The chart shows the monthly maximum UV Index (UVI) for Sandy Hook 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 Sandy Hook typically reaches 9, which falls under the very high exposure category.

Data source: Sandy Hook 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 Sandy Hook Compares to Other Months

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

This table compares monthly weather conditions in Sandy Hook, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (37°F)	96 mm (3.8 inches)	88%	moderate
February Weather	5°C (41°F)	142 mm (5.6 inches)	88%	moderate
March Weather	9°C (48°F)	119 mm (4.7 inches)	87%	high
April Weather	13°C (56°F)	129 mm (5.1 inches)	84%	very high
May Weather	19°C (67°F)	128 mm (5.0 inches)	84%	very high
June Weather	23°C (73°F)	163 mm (6.4 inches)	83%	very high
July Weather	25°C (78°F)	116 mm (4.6 inches)	79%	very high
August Weather	24°C (75°F)	134 mm (5.3 inches)	66%	very high
September Weather	21°C (71°F)	110 mm (4.3 inches)	67%	very high
October Weather	16°C (61°F)	111 mm (4.4 inches)	76%	high
November Weather	8°C (46°F)	75 mm (2.9 inches)	89%	moderate
December Weather	5°C (41°F)	124 mm (4.9 inches)	88%	moderate