nomadseason

September Weather in Dennis Port, United States

Last updated: June 24, 2025

In September, the average temperature in Dennis Port, United States hovers around 19°C (67°F). Visitors can expect a minimum of 13°C (56°F) and a comfortable maximum of 25°C (78°F). With an average precipitation of 118 mm (4.7 in) over 10 days, and a humidity level of 75%, it's a great time to experience the local climate—just remember to bring an umbrella for those occasional showers!

September Temperature in Dennis Port

In September in Dennis Port, the average temperature is 19°C (67°F). Maximums can reach 25°C (78°F), and minimums can be as low as 13°C (56°F). This mild climate makes Dennis Port an ideal destination for travelers seeking pleasant weather.

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

The chart illustrates September temperature patterns in Dennis Port, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dennis Port, September typically has an average temperature of 19°C (67°F), with highs reaching up to 25°C (78°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec353638455363707266594839
Data source: Temperature data for Dennis Port generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Dennis Port

In Dennis Port in September, the precipitation amount is 118 mm (4.7 in) over a span of 10 days.

September Precipitation Trends in Dennis Port

The chart displays monthly precipitation patterns in Dennis Port, 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 Dennis Port, September typically receives around 118 mm (4.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec94123118137119918382118175102136
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Dennis Port

In Dennis Port in September humidity is 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.

September Average Humidity in Dennis Port

This chart illustrates the average monthly humidity levels in Dennis Port, 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 Dennis Port is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dennis Port

In Dennis Port 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 Dennis Port.

Maximum UV Index Levels in Dennis Port for September

The chart shows the monthly maximum UV Index (UVI) for Dennis Port 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 Dennis Port typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910998642
Data source: Dennis Port 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 Dennis Port Compares to Other Months

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

This table compares monthly weather conditions in Dennis Port, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)94 mm (3.7 inches)84%moderate
February Weather2°C (36°F)123 mm (4.8 inches)84%moderate
March Weather3°C (38°F)118 mm (4.7 inches)82%high
April Weather7°C (46°F)137 mm (5.4 inches)79%very high
May Weather12°C (53°F)119 mm (4.7 inches)75%very high
June Weather17°C (63°F)91 mm (3.6 inches)78%very high
July Weather21°C (71°F)83 mm (3.3 inches)76%very high
August Weather22°C (72°F)82 mm (3.2 inches)76%very high
September Weather19°C (67°F)118 mm (4.7 inches)75%very high
October Weather15°C (59°F)175 mm (6.9 inches)75%high
November Weather9°C (48°F)102 mm (4.0 inches)80%moderate
December Weather4°C (40°F)136 mm (5.4 inches)80%low

Compare Dennis Port's Climate with Cities Worldwide