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September Weather in Newport, United States

Last updated: June 24, 2025

In Newport, United States, the average temperature in September is a pleasant 25°C (77°F). While you can expect lows of 15°C (59°F), the highs can reach up to 32°C (90°F). Be prepared for some rain, as the area receives 214 mm (8.4 in) of precipitation over approximately 13 days. With an average humidity of 80%, it's a perfect time to enjoy the warm, tropical climate!

September Temperature in Newport

In September in Newport, the average temperature is 25°C (77°F). Maximum can reach 32°C (90°F) and minimum can be as low as 15°C (59°F). This pleasant weather makes it an ideal destination for travelers looking to enjoy outdoor activities and explore the local attractions.

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

The chart illustrates September temperature patterns in Newport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Newport, September typically has an average temperature of 25°C (77°F), with highs reaching up to 32°C (90°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec495355637177818077705953
Data source: Temperature data for Newport 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 Newport

In Newport in September, the total precipitation amount reaches 214 mm (8.4 in) over the course of 13 days.

September Precipitation Trends in Newport

The chart displays monthly precipitation patterns in Newport, 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 Newport, September typically receives around 214 mm (8.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec821368310711415715419121482108148
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Newport

In Newport in September humidity is 80%. With an average temperature of 25°C (77°F), this humidity feels like traveling through a warm, tropical rainforest where the air is thick and steamy, making even the simplest stroll feel like a workout.

September Average Humidity in Newport

This chart illustrates the average monthly humidity levels in Newport, 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 Newport is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%81%80%80%81%82%83%83%80%80%83%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Newport

In Newport 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 Newport.

Maximum UV Index Levels in Newport for September

The chart shows the monthly maximum UV Index (UVI) for Newport 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 Newport typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109854
Data source: Newport 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 Newport Compares to Other Months

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

This table compares monthly weather conditions in Newport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)82 mm (3.2 inches)84%moderate
February Weather12°C (53°F)136 mm (5.4 inches)81%high
March Weather13°C (56°F)83 mm (3.3 inches)80%very high
April Weather17°C (63°F)107 mm (4.2 inches)80%very high
May Weather22°C (71°F)114 mm (4.5 inches)81%extreme
June Weather25°C (77°F)157 mm (6.2 inches)82%extreme
July Weather27°C (81°F)154 mm (6.0 inches)83%extreme
August Weather27°C (80°F)191 mm (7.5 inches)82%very high
September Weather25°C (77°F)214 mm (8.4 inches)80%very high
October Weather21°C (70°F)82 mm (3.2 inches)79%very high
November Weather15°C (59°F)108 mm (4.3 inches)83%moderate
December Weather12°C (54°F)148 mm (5.8 inches)84%moderate

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