Last updated: March 17, 2025
January in Harrow on the Hill, United Kingdom, presents a crisp start to the year, with maximum temperatures reaching a pleasant 14°C (58°F) while the average hovers around 5°C (41°F). As the month unfolds, residents can expect minimum temperatures dipping to a chilly -5°C (24°F), showcasing the diverse character of winter. Precipitation is relatively moderate, with about 54 mm (2.1 in) occurring over 10 days, contributing to the region's lush winter landscape. Humidity remains high at 91%, adding to the cool and often damp atmosphere, typical of this picturesque hilltop locale.
In January, Harrow on the Hill experiences a distinct chill, with temperatures ranging from a crisp -5°C (24°F) at night to a milder 14°C (58°F) during the warmer days. This early winter month typically sees an average temperature of 5°C (41°F), hinting at the slow transition from the cold depths of winter. As February rolls in, the temperatures rise slightly, with a minimum of -5°C (23°F) and a warmer peak of 18°C (65°F), indicating a gradual thaw as spring approaches. The trends continue into March, where the days become even balmier, reaching highs of 22°C (71°F), marking the shift towards more pleasant spring weather. Overall, January sets the stage for a steady climb in temperatures, paving the way for the budding warmth of spring on the hill.
January in Harrow on the Hill brings an average precipitation of 54 mm (2.1 in) over approximately 10 days, setting the stage for a typically wet winter. This month’s rainfall is consistent with the surrounding winter months, showcasing a steady pattern that continues into February and March, where precipitation levels hover around the same mark. Notably, this indicates that January often transitions smoothly into slightly drier periods in April, suggesting a gradual shift toward less frequent showers as spring approaches. While January's weather may seem dreary at times, it also highlights the essential role of winter rains in revitalizing the landscape, paving the way for a vibrant spring season ahead.
January in Harrow on the Hill brings a notably high humidity level of 91%, setting the tone for a generally damp winter month. As the year progresses, there’s a slight decline in humidity, with February dropping to 89% and March further decreasing to 86%. This trend continues into spring, where humidity levels stabilize around 85% in April and 79% in May, ushering in a breath of fresh air. However, as summer approaches, the humidity sees a moderate dip, reaching its lowest at 71% in July before rising again in the later months, peaking at 92% in both November and December. Overall, Harrow on the Hill experiences a notable fluctuation in humidity, with the winter months consistently bringing higher levels, while late spring and summer offer a brief respite.
In January, Harrow on the Hill experiences a low UV Index of 1, with a comfortable burn time of 45 minutes—perfect for outdoor winter strolls. As the months progress towards spring, the UV Index gradually rises, peaking at 4 in March and 5 in April, indicating moderate exposure and a reduced burn time of 30 minutes. May signals the shift to summer, sharply increasing to a high UV Index of 7, while June and July reach a striking very high level of 8, reducing burn time to just 15 minutes. This trend illustrates how quickly UV exposure intensifies with the approach of summer, demanding more vigilant sun protection. As the year winds down, the Index tapers back to a low level by December, revealing the cyclical nature of UV exposure throughout the seasons. For detailed insights, check out the Harrow on the Hill UV Index.
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January in Harrow on the Hill typically sees 98 hours of sunshine, setting a tone of crisp brightness for the year ahead. As winter gives way to spring, the days gradually lengthen, with February showcasing an increase to 148 hours, and March further brightening the landscape with 210 hours of golden rays. This upward trend continues into April and May, where 319 and 398 hours respectively reveal the emergence of lush greenery and vibrant blooms. Come summer, sunlight peaks in July with an impressive 404 hours, making it the sunniest month of the year. However, as autumn approaches, the light begins to wane, with August dropping to 368 hours and September seeing 300 hours. The cycle continues into the final months, where daylight diminishes to 144 hours in November and 109 hours in December, highlighting the seasonal ebb and flow of sunshine in this picturesque corner of the United Kingdom.
In Harrow on the Hill, the likelihood of sunny weather in January sits at a modest 19%, the lowest for the year. This reflects a trend of gradually increasing sunshine as winter gives way to spring, with February seeing a slight uptick to 25%. However, the real transition occurs as we move into March and April, where chances of sunny days leap to 29% and an impressive 49% respectively. As the seasons progress, the increase in sunshine continues, peaking in the richer brightness of April, only to fluctuate somewhat during the summer months before dipping again in the winter. Thus, while January may be relatively dreary, the promise of brighter days is just around the corner.
January in Harrow on the Hill marks the beginning of the year with a modest 8 hours of daylight, setting a tone of brief sunlit moments. As winter gives way to spring, February sees a slight increase to 9 hours, hinting at longer days ahead. March takes a more significant leap with 11 hours, bringing the promise of warmth and vitality. By April, sunlight embraces the hillside for 13 hours, culminating in 15 hours of brightness by May—a delightful prelude to summer. The longest days arrive in June and July, both boasting 16 hours of daylight, allowing for extended evenings and the flourishing of outdoor activities. As summer wanes, August still enjoys 14 hours, but as the season transitions, September dips down to 12 hours. October brings 10 hours, marking the gradual retreat of daylight, while November and December close the year with 8 and a mere 7 hours respectively. This cycle underscores the rhythmic ebb and flow of daylight, reflecting the changing seasons and setting the stage for nature’s revival each spring.
In Harrow on the Hill, January greets residents with an average wind speed of 4.2 m/s (9 mph), marking the start of the year with a brisk but manageable breeze. This inaugural month sets the tone for winter, as winds gradually pick up in February, reaching 4.7 m/s (11 mph), before tapering slightly in March. A consistent pattern emerges as spring approaches, with April experiencing the gentlest winds at 3.5 m/s (8 mph), encouraging outdoor activities as the chill begins to fade. By mid-year, the winds become pleasantly mild, with June and July averaging around 3.1 to 3.3 m/s (7 mph), creating a tranquil atmosphere. As autumn arrives, however, the winds regain some strength in October and December, each returning to 4.4 m/s (10 mph). Overall, the wind trends in Harrow create a dynamic yet soothing rhythm throughout the seasons, transitioning from invigorating gusts to calming breezes as the year unfolds.
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 January'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.
January and February share similar cooling temperatures, with both months experiencing a minimum of -5°C (23°F) to -5°C (24°F). However, February tends to be slightly warmer, boasting an average temperature of 6°C (43°F) compared to January's 5°C (41°F). The maximum temperatures also rise in February, reaching up to 18°C (65°F) versus January's 14°C (58°F). Precipitation levels are relatively consistent, with January receiving 54 mm (2.1 in) over 10 days and February having 53 mm (2.1 in) over 11 days. Humidity remains high in both months, though February is a bit drier at 89% compared to January's 91%. For a closer look at the specific conditions, you can check out Harrow on the Hill weather in February.
In January, the weather tends to be colder, with temperatures ranging from a minimum of -5°C (24°F) to an average of 5°C (41°F) and reaching a maximum of 14°C (58°F). The month sees around 54 mm (2.1 inches) of precipitation over approximately 10 days, accompanied by high humidity levels at 91%. In contrast, March experiences a slight increase in temperature, with a minimum of -5°C (23°F), an average of 7°C (46°F), and a maximum that can soar to 22°C (71°F). Although March has the same total precipitation of 54 mm (2.1 inches), it tends to rain on about 13 days, while humidity decreases to 86%. For more details, check out Harrow on the Hill weather in March.
In January, Harrow on the Hill experiences a chilly climate with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 14°C (58°F), averaging around 5°C (41°F). The month is characterized by significant humidity at 91% and an average precipitation of 54 mm (2.1 in) over approximately 10 days. By April, the weather begins to warm up noticeably, with temperatures ranging from a minimum of -2°C (29°F) to a much warmer maximum of 26°C (80°F), and an average temperature of 10°C (49°F). Precipitation decreases to 33 mm (1.3 in) over about 8 days, and humidity drops slightly to 85%. This transition from the frigid winter months of January to the more temperate spring conditions of April is quite pronounced. For more detailed information, check out Harrow on the Hill weather in April.
In January, temperatures in Harrow on the Hill can dip as low as -5°C (24°F), with an average of 5°C (41°F) and highs reaching 14°C (58°F). The month is characterized by high humidity at 91% and experiences around 54 mm (2.1 in) of precipitation over about 10 days. In contrast, May brings a notable warming trend, with minimums of 1°C (35°F) and average highs of 25°C (78°F), resulting in an average temperature of 13°C (55°F). While May has slightly more precipitation at 62 mm (2.5 in) over 11 days, the humidity drops to a more comfortable 79%. For a more detailed look at May weather, you can visit Harrow on the Hill weather in May.
January and June exhibit strikingly different weather patterns. In January, temperatures typically range from a chilly -5°C (24°F) at their lowest to a mild 14°C (58°F) at their highest, accompanied by an average of 5°C (41°F). The month is characterized by high humidity at 91% and 54 mm (2.1 in) of precipitation over 10 days, creating a damp and cold atmosphere. In contrast, June brings warmer conditions with temperatures varying from a minimum of 7°C (45°F) to a maximum of 31°C (89°F), averaging 16°C (62°F). While June has slightly more precipitation at 77 mm (3.0 in) over just 9 days, the humidity drops to 80%, contributing to a more pleasant environment overall. For more detailed information, visit Harrow on the Hill weather in June.
The weather in January is characterized by cold temperatures, with minimums reaching as low as -5°C (24°F) and an average of 5°C (41°F), making it a brisk month. In contrast, July brings warmth and sunshine, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 36°C (96°F), resulting in an average of 18°C (65°F). Precipitation is slightly higher in July at 64 mm (2.5 in) over 11 days, compared to January's 54 mm (2.1 in) over 10 days; however, the humidity is notably lower in July at 71%, compared to a damp 91% in January. For a more detailed look at the conditions, check out Harrow on the Hill weather in July.
In January, the weather is considerably colder, with average temperatures hovering around 5°C (41°F) and a minimum of -5°C (24°F). The month experiences high humidity at 91% and sees about 54 mm (2.1 in) of precipitation over approximately 10 days. In contrast, August brings milder conditions, with average temperatures reaching 18°C (64°F) and maximums hitting 34°C (93°F). While it experiences slightly more precipitation at 70 mm (2.7 in) spread over 12 days, the humidity drops to a more comfortable 76%. For those interested in more details, you can check Harrow on the Hill weather in August.
January and September present contrasting weather experiences. In January, temperatures range from a chilly -5°C (24°F) at night to a mild 14°C (58°F) during the day, with an average of 5°C (41°F). The month sees considerable humidity at 91% and experiences around 54 mm (2.1 inches) of precipitation across 10 days. In contrast, September offers a more temperate climate, with minimum temperatures rising to 4°C (39°F) and daytime highs reaching 28°C (83°F), averaging around 15°C (59°F). Precipitation decreases slightly to 45 mm (1.8 inches) over the same number of days, and humidity is lower at 82%, creating a more comfortable atmosphere. For those interested in specifics, you can explore more about Harrow on the Hill weather in September.
In January, the weather tends to be colder and more frigid, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 14°C (58°F). The month experiences an average temperature of 5°C (41°F) and receives around 54 mm (2.1 in) of precipitation over approximately 10 days, accompanied by high humidity at 91%.
In contrast, October sees milder temperatures, with a minimum of 1°C (34°F) and a maximum of 22°C (73°F), yielding an average of 12°C (54°F). This month is wetter, with 84 mm (3.3 in) of precipitation over about 12 days, maintaining a relatively high humidity of 90%.
For a closer look at the weather patterns in this month, check out Harrow on the Hill weather in October.
When comparing the weather in January and November, January experiences colder temperatures with a minimum of -5°C (24°F) and an average of 5°C (41°F), while November sees milder temperatures, ranging from a minimum of -2°C (29°F) to an average of 8°C (47°F). Both months have similar precipitation levels, with January receiving 54 mm (2.1 in) over 10 days and November slightly less at 52 mm (2.0 in) over 11 days. Additionally, humidity remains high in both months, with January at 91% and November slightly higher at 92%. For further details on November weather, you can view Harrow on the Hill weather in November.
In comparing the weather between January and December, both months experience similar temperature ranges, with January averaging at 5°C (41°F) and December slightly warmer at 6°C (44°F). The minimum temperatures are comparable, with January dipping to -5°C (24°F) and December slightly less cold at -4°C (24°F). However, January tends to be drier, with total precipitation of 54 mm (2.1 in) over 10 days, while December sees more rainfall at 84 mm (3.3 in) across 13 days. Humidity levels are nearly identical, hovering around 91% in January and 92% in December, creating a consistently damp atmosphere. For more detailed insights, you can visit Harrow on the Hill weather in December.
January in Harrow on the Hill presents a stark contrast to other months, with its chilly temperatures and heightened humidity levels. The winter months bring a unique blend of crisp air and occasional rain, leading to a rather damp environment, as evidenced by the increase in precipitation days. This month stands out with its distinct chill, often reaching notably low minimums while battling the air's moisture. For those looking to understand the broader climate patterns, further insights can be found at Harrow on the Hill Climate.