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September Weather in West Tisbury, United States

Last updated: June 24, 2025

In West Tisbury, United States, the average temperature in September hovers around 20°C (67°F), with temperatures ranging from a minimum of 13°C (55°F) to a maximum of 25°C (78°F). Expect precipitation of about 112 mm (4.4 in) spread across approximately 10 days, and keep in mind the average humidity is a comfortable 75%.

September Temperature in West Tisbury

In September in West Tisbury, the average temperature is 20°C (67°F). The maximum can reach 25°C (78°F), and the minimum can be as low as 13°C (55°F). This makes it a perfect time for travelers to enjoy outdoor activities and explore the scenic beauty of West Tisbury.

September Weather in West Tisbury: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in West Tisbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In West Tisbury, September typically has an average temperature of 20°C (67°F), with highs reaching up to 25°C (78°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec353638465463717267604940
Data source: Temperature data for West Tisbury 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 West Tisbury

In West Tisbury in September, the total precipitation amount is 112 mm (4.4 in) over the course of 10 days.

September Precipitation Trends in West Tisbury

The chart displays monthly precipitation patterns in West Tisbury, 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 West Tisbury, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec95116118136121948884112164103131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in West Tisbury

In West Tisbury in September humidity is 75%. With an average temperature of 20°C (67°F), this humidity feels like a warm, enveloping blanket that makes outdoor activities more strenuous, causing travelers to feel sticky and fatigued faster.

September Average Humidity in West Tisbury

This chart illustrates the average monthly humidity levels in West Tisbury, 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 West Tisbury 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 West Tisbury

In West Tisbury 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 West Tisbury.

Maximum UV Index Levels in West Tisbury for September

The chart shows the monthly maximum UV Index (UVI) for West Tisbury 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 West Tisbury typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: West Tisbury 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 West Tisbury Compares to Other Months

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

This table compares monthly weather conditions in West Tisbury, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)95 mm (3.7 inches)84%moderate
February Weather2°C (36°F)116 mm (4.6 inches)84%moderate
March Weather3°C (38°F)117 mm (4.6 inches)82%high
April Weather8°C (46°F)136 mm (5.3 inches)79%very high
May Weather12°C (54°F)121 mm (4.8 inches)75%very high
June Weather17°C (63°F)94 mm (3.7 inches)78%very high
July Weather22°C (71°F)88 mm (3.5 inches)76%very high
August Weather22°C (72°F)83 mm (3.3 inches)76%very high
September Weather20°C (67°F)112 mm (4.4 inches)75%very high
October Weather15°C (60°F)164 mm (6.5 inches)75%high
November Weather9°C (49°F)103 mm (4.1 inches)80%moderate
December Weather4°C (40°F)131 mm (5.2 inches)80%low

Compare West Tisbury's Climate with Cities Worldwide