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July Weather in Harpenden, United Kingdom

Last updated: August 27, 2025

In July, the average temperature in Harpenden, United Kingdom hovers around 18°C (65°F), but be prepared for a range: the minimum can dip to 9°C (48°F), while the maximum may soar to 36°C (96°F). Expect 67 mm (2.6 in) of precipitation over roughly 12 days, contributing to an average humidity level of 71%. Enjoy the varied climate as you explore!

July Temperature in Harpenden

In July in Harpenden, the average temperature is 18°C (65°F), with maximums reaching 36°C (96°F) and minimums dropping to as low as 9°C (48°F). This diverse temperature range makes Harpenden an ideal destination for travelers seeking both warm days and cooler evenings.

July Weather in Harpenden: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Harpenden, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harpenden, July typically has an average temperature of 18°C (65°F), with highs reaching up to 36°C (96°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec404345495561656459534643
Data source: Temperature data for Harpenden 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.

July Precipitation in Harpenden

In Harpenden in July, the precipitation amount is 67 mm (2.6 in) distributed over 12 days.

July Precipitation Trends in Harpenden

The chart displays monthly precipitation patterns in Harpenden, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Harpenden, July typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec545156326574677249865183
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Harpenden

In Harpenden in July humidity is 71%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making it a bit sticky and muggy, which can be slightly uncomfortable for traveling, especially if you're engaging in outdoor activities or exploring the city on foot.

July Average Humidity in Harpenden

This chart illustrates the average monthly humidity levels in Harpenden, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Harpenden is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%79%81%71%76%82%91%92%92%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Harpenden

In Harpenden in July, 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 Harpenden.

Maximum UV Index Levels in Harpenden for July

The chart shows the monthly maximum UV Index (UVI) for Harpenden in July, 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 July, the maximum UV index in Harpenden typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Harpenden July 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 July Weather in Harpenden Compares to Other Months

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

This table compares monthly weather conditions in Harpenden, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)54 mm (2.1 inches)91%low
February Weather6°C (43°F)51 mm (2.0 inches)89%low
March Weather7°C (45°F)56 mm (2.2 inches)86%moderate
April Weather9°C (49°F)32 mm (1.3 inches)85%moderate
May Weather13°C (55°F)65 mm (2.5 inches)79%high
June Weather16°C (62°F)74 mm (2.9 inches)80%very high
July Weather18°C (65°F)67 mm (2.6 inches)71%very high
August Weather18°C (64°F)72 mm (2.8 inches)76%high
September Weather15°C (59°F)49 mm (1.9 inches)82%high
October Weather12°C (53°F)86 mm (3.4 inches)90%moderate
November Weather8°C (46°F)51 mm (2.0 inches)92%low
December Weather6°C (43°F)83 mm (3.3 inches)92%low

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