July Weather in Harrow on the Hill, United Kingdom

Last updated: March 17, 2025

Experience the vibrant July weather in Harrow on the Hill, where temperatures can soar to a maximum of 36°C (96°F), offering a summer's warmth contrasted by an average of 18°C (65°F) and dipping as low as 9°C (49°F) during cooler evenings. This month presents a dynamic climate with 64 mm (2.5 in) of rainfall spread over 11 days, creating a lush landscape amidst a relatively high humidity level of 71%. Whether basking in the sun or enjoying an occasional shower, July in Harrow promises to be a delightful blend of warmth and refreshing summer rains.

July Temperature in Harrow on the Hill

In Harrow on the Hill, July heralds the peak of summer, with temperatures reaching a warm average of 18°C (65°F). This month typically enjoys a minimum of 9°C (49°F), offering mild nights, while daytime highs can soar to an impressive 36°C (96°F), making it the warmest time of the year. The notable increase from earlier months, where even June's average max is 31°C (89°F), showcases the potential for heat waves, inviting residents and visitors alike to bask in the long, sunny days. As the summer sun shines down, Harrow transforms into a vibrant hub, perfectly suited for outdoor activities and social gatherings, making July a standout month in its seasonal cycle.

July Weather in Harrow on the Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Harrow on the Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414345495562656459534643
Data source: Temperature data for Harrow on the Hill 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 Harrow on the Hill

In July, Harrow on the Hill experiences a balanced mix of sunshine and rain, with precipitation totaling 64 mm (2.5 in) over 11 days. This rainfall, slightly less than June's 77 mm, indicates a mild mid-summer wetness that helps sustain the lush greenery typical of the region. Notably, August follows closely with an anticipated rise to 70 mm, suggesting that the summer months often maintain a pattern of consistent moisture. Overall, July strikes a sweet spot—wet enough to nourish the landscape without overpowering the joys of summer activities.

July Precipitation Trends in Harrow on the Hill

The chart displays monthly precipitation patterns in Harrow on the Hill, 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.
JanFebMarAprMayJunJulAugSepOctNovDec545354336277647045845284
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Harrow on the Hill

In July, Harrow on the Hill experiences a noticeable drop in humidity, with levels at a comfortable 71%. This marks a significant shift from the peak of 91% in January, gradually declining through the spring months. As summer unfolds, the humidity remains lower than previous months, making July one of the drier points of the year. Following July, humidity levels rise again in August to 76%, suggesting a seasonal trend where the summer months begin with refreshing air before transitioning back to the more humid conditions of late summer and autumn.

July Average Humidity in Harrow on the Hill

This chart illustrates the average monthly humidity levels in Harrow on the Hill, with July's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how July's humidity levels compare to other months.
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 Harrow on the Hill

In July, Harrow on the Hill experiences a very high UV Index of 8, similar to June, indicating peak sun intensity during the summer months. This significant rise in UV radiation compared to earlier months calls for caution, as the recommended burn time is reduced to just 15 minutes. The trend shows that from the low levels in winter to moderate exposure in spring, the UV Index sharply escalates as summer arrives, reaching its zenith in July. Alongside this, proper sun protection becomes essential to enjoy outdoor activities safely during this vibrant season. For detailed insights on UV levels throughout the year, check the Harrow on the Hill UV Index.

Maximum UV Index Levels in Harrow on the Hill for July

The chart shows the monthly maximum UV Index (UVI) for Harrow on the Hill 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Harrow on the Hill 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.

July Sunshine in Harrow on the Hill

In July, Harrow on the Hill basks in an impressive 404 hours of sunshine, marking the peak of the year for daylight enjoyment. Following a steady climb from January’s meager 98 hours, the shine in July reflects a delightful trend that unfolds across the months. With sunshine hours increasing noticeably through April and May, locals and visitors alike cherish the warmth and brightness, making the summer days feel vibrant and alive. While the sunlight begins to wane as August approaches, the July glow stands out, reminding us of the joy and energy that the sunny days bring to this charming corner of the United Kingdom.

Monthly Sunshine Duration in Harrow on the Hill: July Highlighted

The July sunshine duration represents the total number of hours Harrow on the Hill experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec98h148h210h319h398h389h404h368h300h241h144h109h
Data source: Harrow on the Hill July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Harrow on the Hill During July

As summer reaches its peak in July, Harrow on the Hill enjoys a 38% chance of sunny weather, a notable shift from the lower percentages found in the earlier months of the year. Following the vibrant April, which boasts a 49% likelihood of sunshine, July’s chance represents a slight decline but still indicates a favorable summer atmosphere compared to the preceding cooler months. With June showing only a 28% chance of sun, July stands out as an attractive time for outdoor activities, even if it can't quite match the sunshine of late spring. As we move through the summer, the sunshine potential begins to dip again in August, reminding residents and visitors alike to savor the bright days of July while they last.

Percentage of Sunny Days in July in Harrow on the Hill

The chart illustrates the percentage of sunny days in Harrow on the Hill throughout the year, with July highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Harrow on the Hill experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%25%29%49%33%28%38%25%29%25%32%17%
Data source: Harrow on the Hill July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Harrow on the Hill in July

In July, Harrow on the Hill basks in 16 hours of daylight, maintaining the peak of its summer splendor. This month stands out as a continuation of the gradual increase that began in the spring, where daylight moved from 11 hours in March to 15 hours in May. The transition into summer brings a delightful extension of daylight that peaks in June and July before beginning its slow descent in August. As the days grow shorter heading into fall, the contrast of daylight duration in July highlights the essence of summer—a time filled with longer, sunlit days perfect for outdoor activities and enjoying the natural beauty of the season.

Average Daylight Hours in Harrow on the Hill for July

The chart illustrates the variation in daylight duration in Harrow on the Hill throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 23m9h 58m11h 55m13h 54m15h 38m16h 32m16h 3m14h 30m12h 35m10h 36m8h 50m7h 53m
Data source: Harrow on the Hill daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Harrow on the Hill

In July, the average wind speed in Harrow on the Hill dips slightly to 3.3 m/s (7 mph), reflecting a calmness that is characteristic of summer. This month continues a trend seen since early spring, where wind speeds began to moderate after the brisker gusts of winter. With June experiencing the lowest winds of the year at 3.1 m/s (7 mph), July doesn't stray far from that gentle norm. As we look ahead to August, it's anticipated that winds will pick up again to 3.8 m/s (8 mph), hinting at a gradual shift back to more lively breezes as summer winds down. Overall, July stands out as a serene period, ideal for enjoying the warm weather while embracing the soft whispers of the summer breeze.

Average July Wind Speed in Harrow on the Hill

The chart displays monthly wind speed patterns in Harrow on the Hill, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.24.74.43.54.23.13.3 m/s3.83.34.43.84.4
Data source: Harrow on the Hill July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Harrow on the Hill Compares to Other Months

The weather in Harrow on the Hill changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Harrow on the Hill and find detailed weather information for every month.

July and January present stark contrasts in weather conditions. In July, temperatures range from a mild 9°C (49°F) at night to a scorching high of 36°C (96°F) during the day, with an average of 18°C (65°F). The month experiences moderate rainfall, totaling 64 mm (2.5 in) over about 11 days, and humidity levels sitting at a comfortable 71%. In contrast, January is considerably cooler, with temperatures dipping as low as -5°C (24°F) and peaking at only 14°C (58°F), averaging around 5°C (41°F). Precipitation is slightly less, averaging 54 mm (2.1 in) over 10 days, but the humidity is higher at 91%, contributing to a chillier feel. For a closer look at the January weather specifics, you can visit Harrow on the Hill weather in January.

When comparing July and February weather, notable contrasts emerge. July boasts a broader temperature range, with minimums of 9°C (49°F) and maximums reaching up to 36°C (96°F), resulting in an average of 18°C (65°F). In contrast, February’s temperatures are significantly cooler, starting at a minimum of -5°C (23°F) and peaking at 18°C (65°F), with an overall average of just 6°C (43°F). Precipitation levels are somewhat comparable, with July receiving 64 mm (2.5 in) over 11 days and February slightly lower at 53 mm (2.1 in) across the same number of days, though February experiences higher humidity at 89% compared to July’s 71%. For more detailed insights on February weather, visit Harrow on the Hill weather in February.

In comparing the weather of July and March, we see significant differences in temperature and humidity. July boasts warmer temperatures, with a minimum of 9°C (49°F), an average of 18°C (65°F), and a maximum reaching as high as 36°C (96°F). In contrast, March experiences much cooler temperatures, with a minimum of -5°C (23°F), an average of 7°C (46°F), and a maximum of 22°C (71°F). Additionally, July has a lower humidity level at 71%, while March is notably more humid at 86%, which can make the cooler temperatures feel quite damp. Precipitation is also higher in July, with 64 mm (2.5 in) over 11 days compared to March's 54 mm (2.1 in) across 13 days. For more details on March weather, check out Harrow on the Hill weather in March.

In comparing the weather of July and April, July presents a significant shift in temperature and humidity levels. The average temperature in July hovers around 18°C (65°F), peaking at a warm 36°C (96°F), in stark contrast to April's milder average of 10°C (49°F) and maximum of 26°C (80°F). Furthermore, July experiences higher total precipitation of 64 mm (2.5 in) over 11 days, while April sees less rainfall at 33 mm (1.3 in) across 8 days. Interestingly, the humidity remains relatively high in both months, with April at 85% and July at 71%. For more detailed insights into April's weather, you can refer to Harrow on the Hill weather in April.

The weather in July is significantly warmer than in May, with average temperatures soaring to 18°C (65°F) compared to May's average of 13°C (55°F). July experiences a notable maximum temperature of 36°C (96°F), whereas May peaks at a more moderate 25°C (78°F). Precipitation levels are similar in both months, with July receiving 64 mm (2.5 in) and May accumulating 62 mm (2.5 in), both spread across 11 days. However, humidity is slightly lower in July at 71%, compared to May's 79%, making July feel warmer despite similar rainfall. For a closer look at the weather specifics in May, check out Harrow on the Hill weather in May.

When comparing the weather in July to June, we see a notable increase in temperatures. July's minimum temperature is slightly higher at 9°C compared to June's 7°C, with an average of 18°C versus 16°C, and a maximum reaching up to 36°C, which is significantly warmer than June's peak of 31°C. However, July experiences slightly less precipitation, totaling 64 mm over 11 days, compared to June's 77 mm across 9 days. Additionally, humidity is lower in July at 71%, compared to June's 80%. For more detailed information, you can refer to Harrow on the Hill weather in June.

In July, temperatures in Harrow on the Hill range from a minimum of 9°C (49°F) to a maximum of 36°C (96°F), with an average of 18°C (65°F). The month sees about 64 mm (2.5 in) of precipitation over 11 days, accompanied by a humidity level of 71%. In contrast, August experiences slightly cooler conditions, with a minimum temperature of 8°C (47°F) and a maximum of 34°C (93°F), while the average remains steady at 18°C (64°F). Precipitation increases to 70 mm (2.7 in) over 12 days, and humidity also rises to 76%. For more specific details, you can explore Harrow on the Hill weather in August.

In July, the weather is typically warmer, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 36°C (96°F), averaging around 18°C (65°F). This month also sees higher humidity at 71% and experiences approximately 64 mm (2.5 inches) of precipitation over 11 days. Conversely, September brings cooler temperatures, with a minimum of 4°C (39°F), an average of 15°C (59°F), and a maximum of 28°C (83°F). While it is still relatively humid at 82%, September has less precipitation, totaling 45 mm (1.8 inches) over 10 days. For a deeper look at what to expect in September, you can visit Harrow on the Hill weather in September.

In July, the weather is characterized by a wide range of temperatures, with minimums around 9°C (49°F) and maximums soaring to 36°C (96°F), resulting in a warm average of 18°C (65°F). The month experiences moderate rainfall of 64 mm (2.5 in) over approximately 11 days, accompanied by a humidity level of 71%. In contrast, October brings a significant drop in temperature, with averages around 12°C (54°F), minimums of 1°C (34°F), and maximums reaching only 22°C (73°F). Rainfall increases to 84 mm (3.3 in) over 12 days, and humidity climbs to a notable 90%. For a detailed look at local conditions, check out Harrow on the Hill weather in October.

In July, the weather is noticeably warmer, with temperatures ranging from a mild 9°C (49°F) at night to a sweltering maximum of 36°C (96°F) during the day, accompanied by an average temperature of 18°C (65°F). Despite some precipitation over 11 days, totaling 64 mm (2.5 in), the humidity sits at a moderate 71%. In contrast, November presents a much cooler climate, with temperatures dropping to a minimum of -2°C (29°F) and a maximum of 16°C (62°F), resulting in an average of only 8°C (47°F). The month sees a decrease in total precipitation to 52 mm (2.0 in), yet the humidity rises significantly to 92%, contributing to a rather damp feel. For more details specific to this month, visit Harrow on the Hill weather in November.

In July, weather conditions feature a minimum temperature of 9°C (49°F) and an average of 18°C (65°F), peaking at a warm 36°C (96°F). With 64 mm (2.5 in) of precipitation over 11 days and humidity at 71%, the month is generally warm and somewhat humid. In contrast, December presents a starkly different climate, with temperatures ranging from a minimum of -4°C (24°F) to a maximum of 14°C (58°F), averaging around 6°C (44°F). This month experiences 84 mm (3.3 in) of precipitation over 13 days, and the humidity is notably higher at 92%. For a closer look at December’s weather specifics, you can visit Harrow on the Hill weather in December.

Compare Harrow on the Hill's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Harrow on the Hill

July in Harrow on the Hill stands out with its warm temperatures and relatively high humidity. This month often showcases a distinct contrast to the cooler spring and autumn months, inviting residents and visitors to bask in pleasant outdoor activities. While rainfall occurs on about half the month, it rarely disrupts the charm of the summer season. With an average temperature of 18°C, July offers a delightful warmth that encourages exploration of the beautiful landscape. For those interested in a deeper dive into climate patterns, visit Harrow on the Hill Climate.