January Weather in Derry, United Kingdom

Last updated: March 17, 2025

In January, the weather in Derry, United Kingdom presents a blend of chilly temperatures and notable dampness. With maximums reaching about 14°C (57°F) and dipping to a minimum of -3°C (26°F), residents and visitors alike can expect an average temperature of 6°C (42°F). This month sees approximately 69 mm (2.7 in) of rainfall over 12 days, contributing to a high humidity level of 87%. While the conditions may be brisk and wet, they also beautifully encapsulate the wintry charm of this historic city.

January Temperature in Derry

In January, Derry, United Kingdom experiences chilly temperatures that set the tone for winter. The month typically starts with minimums hovering around -3°C (26°F), while average daytime temperatures reach a mild 6°C (42°F) and can peak at a comfortable 14°C (57°F) on warmer days. This steady pattern of coolness continues into February, where similar temperature ranges persist, suggesting a consistently brisk climate. As the seasons change, a slight dip in minimum temperatures is noticeable in March, dropping to -4°C (25°F), yet the average remains stable with lows around 6°C (44°F). While the cold mornings linger, the gradual warming trend that follows hints at the promise of spring, with April and May bringing higher averages and maximum temperatures that climb to 21°C (69°F) and 25°C (76°F), respectively. Overall, January's cool embrace marks the beginning of a slow transition toward more temperate conditions, laying the groundwork for the warmer months ahead.

January Weather in Derry: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Derry, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424243475256595855504643
Data source: Temperature data for Derry 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.

January Precipitation in Derry

In January, Derry experiences a moderate level of precipitation, with an average of 69 mm (2.7 in) spread over 12 days of rainfall. This sets the stage for a gradual increase in both precipitation amounts and the number of rainy days as the year progresses. By February, precipitation surges to 106 mm (4.2 in) over 16 days, showcasing the transition into a wetter winter season. Interestingly, while January marks the beginning of the year with relatively lighter rainfall, it paves the way for a trend of increasing precipitation that peaks in August at 134 mm (5.3 in). As temperatures warm, Derry sees a consistent pattern of rain, suggesting a vibrant, lush landscape that continues through the autumn months. This rhythm of precipitation provides a unique character to Derry's climate, contributing to its rich, green surroundings.

January Precipitation Trends in Derry

The chart displays monthly precipitation patterns in Derry, with values for each month alongside January's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec6910695588195911348510294101
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Derry

In January, Derry, United Kingdom, experiences a notable 87% humidity, setting the stage for a typically damp and chilly winter month. This high humidity level remains consistent as the year progresses, with February and March closely following at 86%, creating a generally humid atmosphere. As the seasons shift into spring, humidity dips slightly to 85% in April, then stabilizes at 82% during the more temperate weather of May. However, the summer months—July and August—see a resurgence in humidity, returning to 86%. The latter part of the year ushers in an upward trend, culminating in peak levels of 90% humidity by November. This cyclical pattern suggests that while January marks the beginning of the year’s humidity highs, it is just part of a larger trend that keeps Derry shrouded in moisture throughout the seasons.

January Average Humidity in Derry

This chart illustrates the average monthly humidity levels in Derry, with January's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how January's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Derry

In Derry, United Kingdom, the January UV Index sits at a low value of 1, indicating minimal risk of harm from unprotected sun exposure. With a burn time of approximately 45 minutes, it's a comfortable time to enjoy outdoor activities without much concern for UV radiation. This trend of low UV exposure continues into February, only escalating as the year progresses. By March, the UV Index rises to 4, entering the moderate exposure category and reducing safe sun time to 30 minutes. As days lengthen and temperatures warm, Derry experiences a peak in UV levels during the summer months, with July hitting 8—notably a very high exposure category. Understanding these trends is vital for effective sun safety throughout the year. For more detailed insights, check out Derry UV Index.

Maximum UV Index Levels in Derry for January

The chart shows the monthly maximum UV Index (UVI) for Derry in January, 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.
JanFebMarAprMayJunJulAugSepOctNovDec124568875321
Data source: Derry January 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.

January Sunshine in Derry

January in Derry, United Kingdom, greets residents and visitors with a modest 71 hours of sunshine, casting a gentle light on the winter landscape. As the year progresses, the warmth of spring gradually emerges, doubling the sunshine to 143 hours by February and reaching 201 hours in March. The days grow significantly brighter in April, offering 312 hours of sun, a precursor to the dazzling 400 hours in May—the sunniest month. Although June sees a slight dip to 380 hours, the summer days remain abundant with light. As autumn approaches, sunshine retreats, with July and August still boasting 393 and 351 hours, respectively. However, September marks a noticeable decline to 277 hours, and the transition into winter is felt with only 115 hours in November and a mere 79 hours by December. This trend underscores Derry's rhythmic cycle of light and dark, offering a vibrant tapestry of seasons bathed in varying degrees of sunlight.

Monthly Sunshine Duration in Derry: January Highlighted

The January sunshine duration represents the total number of hours Derry experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec71h143h201h312h400h380h393h351h277h221h115h79h
Data source: Derry January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Derry During January

In Derry, United Kingdom, the likelihood of sunny weather in January is relatively modest, sitting at 23%. This marks a slight increase compared to February, which boasts a 24% chance of sunshine, hinting at a gradual rise in daylight as winter wanes. As spring approaches, the chances of sunny days jump notably in April to 37%, suggesting that January's gray skies are but a precursor to brighter days ahead. Interestingly, summer months dip again, with July and August showing 21% and 16% chances respectively, underlining a unique trend where sunshine appears more elusive even in mid-year. Overall, while January may be characterized by overcast skies, the slight upward trend in the winter months promises a gradual shift towards sunnier climes as the year progresses.

Percentage of Sunny Days in January in Derry

The chart illustrates the percentage of sunny days in Derry throughout the year, with January 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 Derry experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%24%13%37%28%17%21%16%17%15%15%10%
Data source: Derry January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Derry in January

In Derry, United Kingdom, January ushers in a modest 7 hours of daylight, setting the stage for a gradual increase as the months progress. By February, this duration extends to 9 hours, signaling the awakening of longer days. March continues this upward trend with 11 hours, while April sees a delightful leap to 14 hours, hinting at the approach of spring. May and June peak at an impressive 16 and 17 hours of daylight, providing the longest days of the year. As summer wanes, daylight begins to gently recede; July offers 16 hours, followed by August with 14, and September cooling down to 12 hours. This soft descent continues into October with 10 hours, November at 8, and a return to the starting point of 7 hours in December, reflecting nature's rhythmic cycle of light throughout the year.

Average Daylight Hours in Derry for January

The chart illustrates the variation in daylight duration in Derry throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 50m9h 40m11h 53m14h 10m16h 11m17h 16m16h 41m14h 51m12h 39m10h 24m8h 21m7h 14m
Data source: Derry daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Derry

In Derry, United Kingdom, the January winds tend to be gentle, with an average speed of 3.9 m/s (9 mph), setting a calm tone for the New Year. As winter transitions to spring, February's winds pick up, peaking at 5.9 m/s (13 mph) before tapering off again in April to 3.5 m/s (8 mph). Throughout the spring months, wind speeds fluctuate modestly, hovering around the 3.8 m/s to 4.7 m/s range, suggesting a mild breeze that dances through blossoming landscapes. Summer brings a notable dip, with July's averages dropping to a breezy 2.4 m/s (5 mph), indicating a warm and tranquil season. As autumn approaches, the winds regain strength, particularly in November, when speeds rise to 5.0 m/s (11 mph), hinting at the approaching chill of winter. Overall, the wind trends in Derry showcase a rhythmic cycle, oscillating between calm and invigorating breezes, painting a vivid picture of the changing seasons.

Average January Wind Speed in Derry

The chart displays monthly wind speed patterns in Derry, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.9 m/s5.94.73.53.83.92.42.93.44.55.04.6
Data source: Derry January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Derry Compares to Other Months

The weather in Derry 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 Derry and find detailed weather information for every month.

In comparing the weather between January and February, we see that both months share similar temperature ranges, with January experiencing minimums of -3°C (26°F), averages around 6°C (42°F), and maximums reaching up to 14°C (57°F). February maintains these temperatures, with a slight increase in the maximum to 14°C (58°F) and a consistent minimum of -3°C (27°F). However, February is noticeably wetter, receiving 106 mm (4.2 in) of precipitation over 16 days, compared to January's 69 mm (2.7 in) over 12 days. Humidity levels remain comparable, with January holding at 87% and February slightly lower at 86%. For a more detailed look at February's weather specifics, you can visit Derry weather in February.

In January, the weather features milder temperatures, with a minimum of -3°C (26°F) and an average of 6°C (42°F), reaching a maximum of 14°C (57°F). The month sees about 69 mm (2.7 in) of precipitation over 12 days, while humidity remains high at 87%. In contrast, March experiences slightly colder conditions, with a minimum temperature of -4°C (25°F) and an average of 6°C (44°F). However, temperatures can rise to a maximum of 17°C (62°F). Precipitation increases to 95 mm (3.7 in) over 17 days, reflecting a wetter month, while humidity is slightly lower at 86%. For a detailed look at what to expect, visit Derry weather in March.

In January, the weather is notably colder, with temperatures ranging from a minimum of -3°C to a maximum of 14°C, and an average temperature of 6°C. The month experiences significant precipitation, totaling 69 mm over 12 days, alongside high humidity levels at 87%. In contrast, April brings milder conditions, with temperatures starting at a minimum of -1°C, averaging 8°C, and peaking at 21°C. It experiences slightly less precipitation at 58 mm, spread over 13 days, and humidity drops slightly to 85%. For a closer look at weather specifics, you can check out Derry weather in April.

In January, the weather is much colder, with average temperatures ranging from a minimum of -3°C (26°F) to a maximum of 14°C (57°F), coupled with high humidity at 87%. There is a significant amount of precipitation, totaling 69 mm (2.7 in) over about 12 days. In contrast, May experiences milder conditions with temperatures ranging from -1°C (31°F) to a warm maximum of 25°C (76°F) and an average of 11°C (52°F). Although May sees slightly more precipitation at 81 mm (3.2 in) over roughly 15 days, the humidity is lower at 82%. For more detailed information about the weather in May, you can visit Derry weather in May.

In January, the weather is relatively cold, with temperatures ranging from a chilly -3°C (26°F) to a comfortable 14°C (57°F), averaging around 6°C (42°F). This month sees about 69 mm (2.7 in) of precipitation over approximately 12 days, coupled with a high humidity level of 87%. In contrast, June experiences much warmer conditions, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 27°C (81°F), and an average of 13°C (56°F). Despite the increase in warmth, June has slightly higher precipitation at 95 mm (3.7 in) over 17 days, and humidity levels decrease slightly to 84%. For more details on weather in June, you can visit Derry weather in June.

The weather in January and July presents a striking contrast. In January, temperatures range from a chilly -3°C (26°F) to a mild 14°C (57°F), with an average of 6°C (42°F). The month is marked by higher humidity at 87% and receives 69 mm (2.7 in) of precipitation over approximately 12 days. In contrast, July enjoys much warmer temperatures, with a minimum of 7°C (45°F), an average of 15°C (59°F), and a maximum reaching 27°C (81°F). Although July experiences slightly more precipitation at 91 mm (3.6 in) over about 15 days, the humidity remains relatively comfortable at 86%. To learn more about July weather specifics, you can check Derry weather in July.

In January, temperatures in Derry range from a chilly minimum of -3°C (26°F) to a maximum of 14°C (57°F), with an average temperature of 6°C (42°F). The month experiences about 69 mm (2.7 in) of precipitation across approximately 12 days, along with a relatively high humidity of 87%. In contrast, August brings milder temperatures ranging from a minimum of 6°C (44°F) to a comfortable maximum of 23°C (73°F), with an average of 15°C (58°F). The precipitation increases to 134 mm (5.3 in) over about 20 days, while humidity remains similar at 86%. Overall, January is much colder and drier, while August is warmer and wetter. For more details, you can check the Derry weather in August.

In January, the weather is characterized by cold temperatures, with a minimum of -3°C (26°F) and an average of 6°C (42°F), peaking at a maximum of 14°C (57°F). The month sees 69 mm (2.7 in) of precipitation over about 12 days, with humidity levels sitting at a high 87%. In contrast, September offers a much warmer climate, with temperatures ranging from a minimum of 2°C (36°F) to an average of 13°C (55°F) and maximums reaching 24°C (75°F). This month experiences slightly higher precipitation at 85 mm (3.4 in) spread over 17 days, and humidity remains similar at 88%. For more detailed information, you can visit Derry weather in September.

January and October present distinct weather patterns, reflective of their seasonal transitions. In January, temperatures range from a chilly minimum of -3°C (26°F) to a mild maximum of 14°C (57°F), with an average temperature of 6°C (42°F). The month experiences around 69 mm (2.7 in) of precipitation over 12 days, contributing to a high humidity level of 87%. In contrast, October sees milder temperatures, with a minimum of 1°C (33°F) and a maximum of 19°C (66°F), averaging 10°C (51°F). Precipitation increases to 102 mm (4.0 in) across 18 days, accompanied by a slight uptick in humidity to 89%. For more detailed information, check Derry weather in October.

In January, temperatures range from a low of -3°C (26°F) to a high of 14°C (57°F), with an average of 6°C (42°F) and 69 mm (2.7 in) of precipitation spread over 12 days. The humidity is quite high at 87%, contributing to the chilly atmosphere. In contrast, November presents slightly milder conditions, with temperatures varying from -2°C (29°F) to 15°C (59°F) and an average of 8°C (46°F). However, it experiences more precipitation at 94 mm (3.7 in) over 18 days, along with a higher humidity level of 90%. Overall, while both months are cool and wet, November tends to be slightly warmer but rainier than January. For more details, you can visit Derry weather in November.

In January, the weather in Derry is quite similar to that of December, with both months experiencing a minimum temperature of -3°C. However, January averages a slightly warmer maximum of 14°C compared to December's 13°C. Precipitation levels also differ, with January receiving 69 mm over 12 days, while December sees more rainfall at 101 mm across 19 days. Humidity remains consistent, at about 87% in January and slightly lower at 86% in December. For a more detailed look at December weather, you can refer to Derry weather in December.

Compare Derry's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Derry

As January settles over Derry, the city experiences a notable shift in weather patterns compared to other months. While the average temperatures hover around 6°C (42°F), this month often swing between lows of -3°C (26°F) and highs reaching up to 14°C (57°F). Precipitation is relatively frequent, with around 12 days of rain accumulating to 69 mm (2.7 in), creating a moist atmosphere with humidity levels soaring to 87%. These chilly and damp conditions make January a distinctly crisp month, setting it apart from the milder, more pleasant seasons that follow. For a deeper understanding of the overall weather patterns in Derry, visit Derry Climate.