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June Weather in Sussex, United States

Last updated: June 24, 2025

In Sussex, United States, the average temperature in June hovers around 20°C (69°F). Temperatures can dip to a chilly 7°C (44°F), while soaring to a warm 34°C (94°F) at their peak. Expect 106 mm (4.2 in) of precipitation over approximately 12 days, coupled with a high average humidity of 80%. Stay prepared for a mix of weather!

June Temperature in Sussex

In June in Sussex, the average temperature is 20°C (69°F). Maximums can reach 34°C (94°F), while minimums can drop as low as 7°C (44°F). This climate makes Sussex a great destination for travelers seeking a pleasant mix of warm days and cooler evenings.

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

The chart illustrates June 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, June typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (94°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec222436455869747165523730
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.

June Precipitation in Sussex

In Sussex in June, the precipitation amount is 106 mm (4.2 in), occurring over a span of 12 days.

June Precipitation Trends in Sussex

The chart displays monthly precipitation patterns in Sussex, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Sussex, June typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec5451611071261069788981124646
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Sussex

In Sussex in June, humidity is 80%. With an average temperature of 20°C (69°F), this humidity feels like a warm blanket enveloping you, making every step slightly more challenging as you navigate the air that clings to your skin, often leaving you longing for a cool breeze while exploring the sights.

June Average Humidity in Sussex

This chart illustrates the average monthly humidity levels in Sussex, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Sussex is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Sussex

In Sussex in June, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Sussex.

Maximum UV Index Levels in Sussex for June

The chart shows the monthly maximum UV Index (UVI) for Sussex in June, 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 June, the maximum UV index in Sussex typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Sussex June 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 June 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 June’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 June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)54 mm (2.1 inches)85%moderate
February Weather-5°C (24°F)51 mm (2.0 inches)85%moderate
March Weather2°C (36°F)61 mm (2.4 inches)85%moderate
April Weather7°C (45°F)107 mm (4.2 inches)85%very high
May Weather14°C (58°F)126 mm (5.0 inches)78%very high
June Weather20°C (69°F)106 mm (4.2 inches)80%very high
July Weather23°C (74°F)97 mm (3.8 inches)78%very high
August Weather22°C (71°F)87 mm (3.4 inches)76%very high
September Weather18°C (65°F)98 mm (3.9 inches)79%high
October Weather11°C (52°F)112 mm (4.4 inches)83%moderate
November Weather3°C (37°F)46 mm (1.8 inches)88%moderate
December Weather-1°C (30°F)46 mm (1.8 inches)81%low

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