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September Weather in Hampstead, United States

Last updated: June 24, 2025

In Hampstead, United States, the average temperature in September hovers around 19°C (66°F). Expect a minimum of 3°C (38°F) and a maximum of 35°C (95°F). This month brings an average precipitation of 73 mm (2.9 in) over 8 days, with humidity levels around 71%, creating a comfortable yet slightly damp atmosphere.

September Temperature in Hampstead

In September in Hampstead, the average temperature is 19°C (66°F). The maximum can reach 35°C (95°F), while the minimum can drop as low as 3°C (38°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.

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

The chart illustrates September temperature patterns in Hampstead, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hampstead, September typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (95°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec293137485969747366554132
Data source: Temperature data for Hampstead 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 Hampstead

In Hampstead in September, the precipitation amount is 73 mm (2.9 in) over a span of 8 days.

September Precipitation Trends in Hampstead

The chart displays monthly precipitation patterns in Hampstead, 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 Hampstead, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec6884851278289131777312895121
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hampstead

In Hampstead in September humidity is 71%. With an average temperature of 19°C (66°F), this humidity feels like a warm, balmy embrace that enhances the tropical atmosphere, making it a perfect backdrop for leisurely strolls and outdoor adventures, though it may also lead to a slightly sticky feeling as you explore.

September Average Humidity in Hampstead

This chart illustrates the average monthly humidity levels in Hampstead, 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 Hampstead is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hampstead

In Hampstead in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Hampstead.

Maximum UV Index Levels in Hampstead for September

The chart shows the monthly maximum UV Index (UVI) for Hampstead 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 Hampstead typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2558910997632
Data source: Hampstead 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 Hampstead Compares to Other Months

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

This table compares monthly weather conditions in Hampstead, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)68 mm (2.7 inches)86%low
February Weather0°C (32°F)84 mm (3.3 inches)84%moderate
March Weather3°C (37°F)85 mm (3.3 inches)82%moderate
April Weather9°C (48°F)127 mm (5.0 inches)80%very high
May Weather15°C (59°F)82 mm (3.2 inches)72%very high
June Weather20°C (69°F)89 mm (3.5 inches)72%very high
July Weather23°C (74°F)131 mm (5.2 inches)67%very high
August Weather23°C (74°F)77 mm (3.0 inches)66%very high
September Weather19°C (66°F)73 mm (2.9 inches)71%high
October Weather13°C (55°F)128 mm (5.0 inches)78%high
November Weather5°C (42°F)95 mm (3.7 inches)84%moderate
December Weather0°C (32°F)121 mm (4.8 inches)81%low

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