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September Weather in Port Dickinson, United States

Last updated: June 24, 2025

In September, the average temperature in Port Dickinson, United States is a pleasant 17°C (63°F). Visitors can expect a temperature range that varies from a chilly -1°C (31°F) to a warm 32°C (90°F). The region experiences an average precipitation of 103 mm (4.1 in) spread across 9 days, complemented by a relative humidity of 78%, making it a refreshing destination to explore.

September Temperature in Port Dickinson

In September in Port Dickinson, the average temperature is 17°C (63°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as -1°C (31°F). It's essential to pack layers and be prepared for varying weather conditions while enjoying your travels.

September Weather in Port Dickinson: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Port Dickinson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Dickinson, September typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (90°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec252834465866717063533831
Data source: Temperature data for Port Dickinson 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 Port Dickinson

In Port Dickinson in September, the precipitation amount is 103 mm (4.1 in) distributed over 9 days.

September Precipitation Trends in Port Dickinson

The chart displays monthly precipitation patterns in Port Dickinson, 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 Port Dickinson, September typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7890891221271051361141031459592
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Port Dickinson

In Port Dickinson in September, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.

September Average Humidity in Port Dickinson

This chart illustrates the average monthly humidity levels in Port Dickinson, 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 Port Dickinson is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Port Dickinson

In Port Dickinson 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 Port Dickinson.

Maximum UV Index Levels in Port Dickinson for September

The chart shows the monthly maximum UV Index (UVI) for Port Dickinson 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 Port Dickinson typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
Data source: Port Dickinson 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 Port Dickinson Compares to Other Months

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

This table compares monthly weather conditions in Port Dickinson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)78 mm (3.1 inches)90%moderate
February Weather-2°C (28°F)90 mm (3.5 inches)90%moderate
March Weather1°C (35°F)89 mm (3.5 inches)87%high
April Weather8°C (46°F)122 mm (4.8 inches)88%very high
May Weather14°C (58°F)127 mm (5.0 inches)82%very high
June Weather19°C (67°F)105 mm (4.1 inches)79%very high
July Weather22°C (72°F)136 mm (5.4 inches)78%very high
August Weather21°C (70°F)114 mm (4.5 inches)76%very high
September Weather17°C (63°F)103 mm (4.1 inches)78%very high
October Weather12°C (53°F)144 mm (5.7 inches)84%high
November Weather3°C (38°F)95 mm (3.7 inches)89%moderate
December Weather-1°C (31°F)92 mm (3.6 inches)86%low

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