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July Weather in Waltham, United Kingdom

Last updated: August 27, 2025

In July, the average temperature in Waltham, United Kingdom is a pleasant 17°C (63°F), with minimums dipping to 9°C (48°F) and maximums reaching up to 32°C (89°F). Expect 78 mm (3.1 in) of precipitation spread over 14 days, and a relatively high average humidity of 79%. This blend of warmth and moisture creates a unique climate experience during your visit!

July Temperature in Waltham

In July in Waltham, the average temperature is 17°C (63°F). Maximum temperatures can reach 32°C (89°F), while the minimum can drop as low as 9°C (48°F). It's a great time for travelers to enjoy mild weather while exploring the diverse attractions that Waltham has to offer.

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

The chart illustrates July temperature patterns in Waltham, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waltham, July typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (89°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec414245475359636358534642
Data source: Temperature data for Waltham 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 Waltham

In Waltham in July, the precipitation amount is 78 mm (3.1 in) over a period of 14 days.

July Precipitation Trends in Waltham

The chart displays monthly precipitation patterns in Waltham, 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 Waltham, July typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec435658336678788165756268
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Waltham

In Waltham in July, humidity is 79%. With an average temperature of 17°C (63°F), this humidity feels like a warm, muggy embrace, making outdoor activities less comfortable and prompting travelers to seek shaded areas or cool refreshments more frequently.

July Average Humidity in Waltham

This chart illustrates the average monthly humidity levels in Waltham, 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 Waltham is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%86%85%83%83%80%78%84%88%89%88%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Waltham

In Waltham 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 Waltham.

Maximum UV Index Levels in Waltham for July

The chart shows the monthly maximum UV Index (UVI) for Waltham 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 Waltham typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123578875321
Data source: Waltham 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 Waltham Compares to Other Months

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

This table compares monthly weather conditions in Waltham, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)43 mm (1.7 inches)89%low
February Weather6°C (43°F)56 mm (2.2 inches)87%low
March Weather7°C (45°F)58 mm (2.3 inches)86%moderate
April Weather9°C (48°F)33 mm (1.3 inches)85%moderate
May Weather12°C (54°F)66 mm (2.6 inches)83%high
June Weather15°C (60°F)78 mm (3.1 inches)83%very high
July Weather17°C (63°F)78 mm (3.1 inches)79%very high
August Weather17°C (63°F)81 mm (3.2 inches)78%high
September Weather15°C (58°F)65 mm (2.5 inches)84%moderate
October Weather11°C (53°F)75 mm (2.9 inches)88%moderate
November Weather8°C (47°F)62 mm (2.4 inches)89%low
December Weather6°C (42°F)68 mm (2.7 inches)88%low

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