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September Weather in Hooper Bay, United States

Last updated: June 24, 2025

In September, the average temperature in Hooper Bay, United States is a cool 9°C (48°F), with minimums dipping to 2°C (36°F) and maximums reaching 15°C (59°F). Expect frequent rain, as the area receives approximately 99 mm (3.9 in) of precipitation over 15 days, making it a rather wet month. Humidity levels are notably high at 90%, creating a damp atmosphere throughout the day.

September Temperature in Hooper Bay

In September in Hooper Bay, the average temperature is 9°C (48°F). Maximum temperatures can reach 15°C (59°F), while minimum temperatures can dip as low as 2°C (36°F). Be sure to pack layers to stay comfortable during your travels!

September Weather in Hooper Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hooper Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hooper Bay, September typically has an average temperature of 9°C (48°F), with highs reaching up to 15°C (59°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec111519283949535348392619
Data source: Temperature data for Hooper Bay 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 Hooper Bay

In Hooper Bay in September, the total precipitation amount is 99 mm (3.9 in) over the course of 15 days.

September Precipitation Trends in Hooper Bay

The chart displays monthly precipitation patterns in Hooper Bay, 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 Hooper Bay, September typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec366159404450831041001036574
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hooper Bay

In Hooper Bay in September, humidity is 90%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration quite uncomfortable and requiring heavier layers to stay warm and dry.

September Average Humidity in Hooper Bay

This chart illustrates the average monthly humidity levels in Hooper Bay, 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 Hooper Bay is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec96%95%87%82%85%89%92%92%90%87%89%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hooper Bay

In Hooper Bay in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Hooper Bay for better planning.

Maximum UV Index Levels in Hooper Bay for September

The chart shows the monthly maximum UV Index (UVI) for Hooper Bay 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 Hooper Bay typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456654211
Data source: Hooper Bay 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 Hooper Bay Compares to Other Months

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

This table compares monthly weather conditions in Hooper Bay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-12°C (11°F)36 mm (1.4 inches)96%low
February Weather-10°C (15°F)61 mm (2.4 inches)95%low
March Weather-7°C (19°F)59 mm (2.3 inches)87%moderate
April Weather-2°C (28°F)39 mm (1.6 inches)82%moderate
May Weather4°C (39°F)44 mm (1.7 inches)85%moderate
June Weather10°C (49°F)50 mm (2.0 inches)89%high
July Weather11°C (53°F)83 mm (3.3 inches)92%high
August Weather12°C (53°F)104 mm (4.1 inches)92%moderate
September Weather9°C (48°F)99 mm (3.9 inches)90%moderate
October Weather4°C (39°F)103 mm (4.1 inches)87%low
November Weather-3°C (27°F)65 mm (2.6 inches)89%low
December Weather-7°C (19°F)74 mm (2.9 inches)95%low

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