September Weather in Barry, United States

Last updated: June 24, 2025

In September, the average temperature in Barry, United States is a pleasant 21°C (71°F). Expect temperature fluctuations, with a minimum of 7°C (44°F) and a maximum of 34°C (94°F). Be prepared for some rainfall, as the region sees about 89 mm (3.5 in) of precipitation spread over 7 days. With an average humidity of 76%, the air will feel comfortably warm but may have a touch of moisture.

September Temperature in Barry

In September in Barry, the average temperature hovers around 21°C (71°F). Maximums can soar to 34°C (94°F), while minimums can dip as low as 7°C (44°F). Overall, it's a great time to explore and enjoy a variety of outdoor activities in Barry.

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

The chart illustrates September temperature patterns in Barry, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barry, September typically has an average temperature of 21°C (71°F), with highs reaching up to 34°C (94°F) and lows dropping to around 7°C (44°F).

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

September Precipitation in Barry

In Barry in September, the total precipitation amount is 89 mm (3.5 in) spread over a period of 7 days.

September Precipitation Trends in Barry

The chart displays monthly precipitation patterns in Barry, 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 Barry, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Barry

In Barry in September humidity is 76%. With an average temperature of 21°C (71°F), this humidity feels like a warm, enveloping blanket, making traveling both refreshing and a bit exhausting, as the air clings to your skin and you often find yourself reaching for water to stay hydrated.

September Average Humidity in Barry

This chart illustrates the average monthly humidity levels in Barry, 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 Barry is approximately 76%, 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 Barry

In Barry 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 Barry.

Maximum UV Index Levels in Barry for September

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

Data source: Barry 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 Barry Compares to Other Months

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

This table compares monthly weather conditions in Barry, 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 (29°F)	65 mm (2.5 inches)	82%	moderate
February Weather	0°C (32°F)	63 mm (2.5 inches)	80%	moderate
March Weather	7°C (44°F)	130 mm (5.1 inches)	80%	high
April Weather	12°C (53°F)	106 mm (4.2 inches)	80%	very high
May Weather	19°C (66°F)	160 mm (6.3 inches)	82%	very high
June Weather	24°C (75°F)	123 mm (4.9 inches)	83%	extreme
July Weather	26°C (78°F)	98 mm (3.8 inches)	81%	extreme
August Weather	24°C (75°F)	101 mm (4.0 inches)	80%	very high
September Weather	21°C (71°F)	89 mm (3.5 inches)	76%	very high
October Weather	14°C (57°F)	109 mm (4.3 inches)	76%	high
November Weather	6°C (42°F)	62 mm (2.4 inches)	85%	moderate
December Weather	2°C (36°F)	47 mm (1.8 inches)	86%	moderate