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October Weather in Sussex, United States

Last updated: June 24, 2025

The average temperature in Sussex, United States during October hovers around 18°C (65°F). Expect a minimum of 1°C (34°F) and a potential maximum of 36°C (97°F). Typically, you can anticipate about 104 mm (4.1 in) of precipitation spread over 9 days, accompanied by an average humidity level of 80%.

October Temperature in Sussex

In October in Sussex, the average temperature is 18°C (65°F). Maximums can reach 36°C (97°F), and minimums can be as low as 1°C (34°F). This variation in temperature makes it essential to pack accordingly for your travels.

October Weather in Sussex: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Sussex, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sussex, October typically has an average temperature of 18°C (65°F), with highs reaching up to 36°C (97°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec414651616976807874645145
Data source: Temperature data for Sussex 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.

October Precipitation in Sussex

In Sussex in October, the precipitation amount is 104 mm (4.1 in) over the course of 9 days.

October Precipitation Trends in Sussex

The chart displays monthly precipitation patterns in Sussex, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Sussex, October typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec84105861091151161241611131047889
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Sussex

In Sussex in October, humidity is 80%. With an average temperature of 18°C (65°F), this humidity feels like wandering through a warm, damp blanket, making every step slightly heavy and resulting in a constant sheen of sweat, which can be both refreshing and exhausting for travelers.

October Average Humidity in Sussex

This chart illustrates the average monthly humidity levels in Sussex, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Sussex is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%82%81%80%82%81%81%78%80%84%84%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Sussex

In Sussex in October, 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 Sussex.

Maximum UV Index Levels in Sussex for October

The chart shows the monthly maximum UV Index (UVI) for Sussex in October, 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 October, the maximum UV index in Sussex typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101011109853
Data source: Sussex October 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 October Weather in Sussex Compares to Other Months

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

This table compares monthly weather conditions in Sussex, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)84 mm (3.3 inches)84%moderate
February Weather8°C (47°F)105 mm (4.2 inches)83%high
March Weather10°C (51°F)85 mm (3.4 inches)82%high
April Weather16°C (61°F)109 mm (4.3 inches)81%very high
May Weather21°C (69°F)115 mm (4.5 inches)80%very high
June Weather24°C (76°F)116 mm (4.6 inches)82%very high
July Weather27°C (81°F)124 mm (4.9 inches)81%extreme
August Weather26°C (79°F)161 mm (6.3 inches)81%very high
September Weather23°C (74°F)113 mm (4.4 inches)78%very high
October Weather18°C (65°F)104 mm (4.1 inches)80%very high
November Weather10°C (51°F)78 mm (3.1 inches)84%moderate
December Weather7°C (45°F)89 mm (3.5 inches)84%moderate

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