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September Weather in Westhaven-Moonstone, United States

Last updated: June 24, 2025

In September, the average temperature in Westhaven-Moonstone, United States hovers around 15°C (59°F). Expect temperatures to range from a cool 7°C (45°F) to a warm 31°C (88°F). The region receives approximately 35 mm (1.4 in) of precipitation over about 3 days, with an average humidity level of 62%.

September Temperature in Westhaven-Moonstone

In September, in Westhaven-Moonstone, the average temperature is 15°C (59°F), with maximums reaching up to 31°C (88°F) and minimums dropping as low as 7°C (45°F). This makes Westhaven-Moonstone an ideal destination for travelers seeking a comfortable climate with the opportunity for both warm and cooler experiences.

September Weather in Westhaven-Moonstone: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Westhaven-Moonstone, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westhaven-Moonstone, September typically has an average temperature of 15°C (59°F), with highs reaching up to 31°C (88°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec464546495257596159544945
Data source: Temperature data for Westhaven-Moonstone 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 Westhaven-Moonstone

In Westhaven-Moonstone in September, the precipitation amount is 35 mm (1.4 in) over the course of 3 days.

September Precipitation Trends in Westhaven-Moonstone

The chart displays monthly precipitation patterns in Westhaven-Moonstone, 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 Westhaven-Moonstone, September typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec2432311851216627653567152184
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Westhaven-Moonstone

In Westhaven-Moonstone in September humidity is 62%. With an average temperature of 15°C (59°F), this humidity feels like a refreshing embrace, making it ideal for leisurely strolls and explorations without feeling overly hot or sticky.

September Average Humidity in Westhaven-Moonstone

This chart illustrates the average monthly humidity levels in Westhaven-Moonstone, 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 Westhaven-Moonstone is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%85%82%81%79%70%60%62%72%87%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Westhaven-Moonstone

In Westhaven-Moonstone 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 Westhaven-Moonstone.

Maximum UV Index Levels in Westhaven-Moonstone for September

The chart shows the monthly maximum UV Index (UVI) for Westhaven-Moonstone 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 Westhaven-Moonstone typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3478101110108642
Data source: Westhaven-Moonstone 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 Westhaven-Moonstone Compares to Other Months

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

This table compares monthly weather conditions in Westhaven-Moonstone, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (46°F)243 mm (9.6 inches)86%moderate
February Weather7°C (45°F)231 mm (9.1 inches)85%moderate
March Weather8°C (46°F)185 mm (7.3 inches)85%high
April Weather10°C (49°F)121 mm (4.7 inches)82%very high
May Weather11°C (52°F)66 mm (2.6 inches)81%very high
June Weather14°C (57°F)27 mm (1.1 inches)79%extreme
July Weather15°C (59°F)6 mm (0.2 inches)70%very high
August Weather16°C (61°F)5 mm (0.2 inches)60%very high
September Weather15°C (59°F)35 mm (1.4 inches)62%very high
October Weather12°C (54°F)67 mm (2.6 inches)72%high
November Weather10°C (49°F)152 mm (6.0 inches)87%moderate
December Weather7°C (46°F)184 mm (7.2 inches)86%low

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