nomadseason

July Weather in Merton, United Kingdom

Last updated: August 27, 2025

In Merton, United Kingdom, the average temperature in July is a pleasant 16°C (62°F). Expect a minimum of 8°C (47°F) and a comfortable maximum of 28°C (82°F). With an average precipitation of 75 mm (3.0 in) spread over 12 days, coupled with a humidity level of around 70%, it’s a month that balances warmth with occasional wet spells.

July Temperature in Merton

In July in Merton, the average temperature is 16°C (62°F), with maximums reaching up to 28°C (82°F) and minimums dropping as low as 8°C (47°F). Overall, it's a pleasant time for traveling, offering a comfortable climate for exploration and outdoor activities.

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

The chart illustrates July temperature patterns in Merton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merton, July typically has an average temperature of 16°C (62°F), with highs reaching up to 28°C (82°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec434445485359616158534846
Data source: Temperature data for Merton generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Merton

In Merton in July, the precipitation amount is 75 mm (3.0 in) over the course of 12 days.

July Precipitation Trends in Merton

The chart displays monthly precipitation patterns in Merton, 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 Merton, July typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec70808851688375827510790122
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

July Humidity in Merton

In Merton in July, humidity is 70%. With an average temperature of 16°C (62°F), this humidity feels like a cool, damp blanket wrapping around you, making outdoor activities a bit uncomfortable and prompting travelers to seek shade or indoor attractions to avoid the sticky air.

July Average Humidity in Merton

This chart illustrates the average monthly humidity levels in Merton, 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 Merton is approximately 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Merton

In Merton 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 Merton.

Maximum UV Index Levels in Merton for July

The chart shows the monthly maximum UV Index (UVI) for Merton 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 Merton typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678876421
Data source: Merton 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 Merton Compares to Other Months

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

This table compares monthly weather conditions in Merton, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)70 mm (2.7 inches)88%low
February Weather7°C (44°F)80 mm (3.2 inches)88%low
March Weather7°C (45°F)88 mm (3.5 inches)86%moderate
April Weather9°C (49°F)51 mm (2.0 inches)84%high
May Weather11°C (53°F)68 mm (2.7 inches)80%high
June Weather15°C (59°F)83 mm (3.3 inches)80%very high
July Weather16°C (62°F)75 mm (3.0 inches)70%very high
August Weather16°C (61°F)82 mm (3.2 inches)73%high
September Weather14°C (58°F)75 mm (2.9 inches)79%high
October Weather12°C (53°F)107 mm (4.2 inches)89%moderate
November Weather9°C (48°F)90 mm (3.6 inches)90%low
December Weather8°C (46°F)122 mm (4.8 inches)89%low

Compare Merton's Climate with Cities Worldwide