September Weather in Manly, United States

Last updated: June 24, 2025

In September, the average temperature in Manly, United States is a pleasant 18°C (65°F). Temperatures can range from a cool 2°C (36°F) to a warm 33°C (92°F), offering a diverse climate experience. Expect approximately 108 mm (4.2 in) of precipitation spread over 11 days, contributing to a 75% average humidity that adds a touch of moisture to the air.

September Temperature in Manly

In September, in Manly, the average temperature is 18°C (65°F). The maximum can reach 33°C (92°F), while the minimum can be as low as 2°C (36°F). This temperature range makes Manly an ideal destination for travelers seeking both warm days and cool nights.

September Weather in Manly: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Manly, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Manly, September typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (36°F).

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

September Precipitation in Manly

In Manly in September, the precipitation amount is 108 mm (4.2 in), distributed over 11 days.

September Precipitation Trends in Manly

The chart displays monthly precipitation patterns in Manly, 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 Manly, September typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 11 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 Manly

In Manly in September, humidity is 75%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket that can make outdoor exploration feel a bit stifling, potentially leading to discomfort during travel activities.

September Average Humidity in Manly

This chart illustrates the average monthly humidity levels in Manly, 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 Manly is approximately 75%, 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 Manly

In Manly 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 Manly.

Maximum UV Index Levels in Manly for September

The chart shows the monthly maximum UV Index (UVI) for Manly 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 Manly typically reaches 8, which falls under the very high exposure category.

Data source: Manly 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 Manly Compares to Other Months

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

This table compares monthly weather conditions in Manly, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (19°F)	36 mm (1.4 inches)	82%	moderate
February Weather	-8°C (18°F)	47 mm (1.9 inches)	84%	moderate
March Weather	1°C (35°F)	71 mm (2.8 inches)	80%	moderate
April Weather	7°C (45°F)	80 mm (3.1 inches)	81%	very high
May Weather	15°C (60°F)	159 mm (6.3 inches)	74%	very high
June Weather	22°C (72°F)	132 mm (5.2 inches)	80%	extreme
July Weather	23°C (74°F)	98 mm (3.8 inches)	80%	very high
August Weather	21°C (71°F)	118 mm (4.7 inches)	77%	very high
September Weather	18°C (65°F)	108 mm (4.2 inches)	75%	very high
October Weather	10°C (49°F)	112 mm (4.4 inches)	80%	moderate
November Weather	1°C (35°F)	49 mm (1.9 inches)	87%	moderate
December Weather	-3°C (27°F)	35 mm (1.4 inches)	83%	moderate