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September Weather in Newport, Ireland

Last updated: August 23, 2025

In September, the average temperature in Newport, Ireland hovers around 13°C (56°F), with fluctuations between a chilly 2°C (36°F) and a warm 25°C (76°F). Expect 96 mm (3.8 in) of precipitation spread over 19 days, contributing to an average humidity of 88%. Prepare for wet weather and mild temperatures as you experience this vibrant locale!

September Temperature in Newport

In September in Newport, the average temperature is 13°C (56°F). Maximums can reach up to 25°C (76°F), while minimums can drop as low as 2°C (36°F). Be prepared for a mix of mild and cooler weather, making it a great time for layering your clothing while exploring.

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 13°C (56°F), with highs reaching up to 25°C (76°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec434344485256595855504644
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 precipitation amount is 96 mm (3.8 in) over the course of 19 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 96 mm (3.8 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec9113411768829510015296134117122
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 88%. With an average temperature of 13°C (56°F), this humidity feels like a thick, warm blanket wrapping around you, making outdoor adventures sticky and challenging.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%86%83%83%85%85%88%91%92%89%
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 reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, 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 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
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 Weather6°C (43°F)91 mm (3.6 inches)88%low
February Weather6°C (43°F)134 mm (5.3 inches)88%low
March Weather7°C (44°F)117 mm (4.6 inches)87%moderate
April Weather9°C (48°F)68 mm (2.7 inches)86%moderate
May Weather11°C (52°F)82 mm (3.2 inches)83%high
June Weather13°C (56°F)95 mm (3.7 inches)83%very high
July Weather15°C (59°F)100 mm (4.0 inches)85%very high
August Weather15°C (58°F)152 mm (6.0 inches)85%high
September Weather13°C (56°F)96 mm (3.8 inches)88%moderate
October Weather10°C (51°F)134 mm (5.3 inches)91%moderate
November Weather8°C (46°F)117 mm (4.6 inches)92%low
December Weather7°C (44°F)122 mm (4.8 inches)89%low

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