January Weather in Southampton, United States

Last updated: February 24, 2025

January in Southampton, United States, brings a mix of chilly temperatures and considerable precipitation. The maximum temperature reaches a brisk 13°C (55°F), while the average dips to a cool 2°C (36°F), and nighttime lows can plummet to -13°C (8°F). With 90 mm (3.5 in) of total precipitation spread over 9 days, this month is characterized by its high humidity levels at 84%, creating a damp atmosphere. Residents and visitors alike should prepare for a wintry experience, balancing outdoor activities with cozy indoor retreats.

January Temperature in Southampton

In January, Southampton experiences a notable chill, with temperatures ranging from a brisk -13°C (8°F) to a comfortable 13°C (55°F). The average temperature settles around 2°C (36°F), setting the tone for the winter season. As the month progresses, residents can expect frosty mornings but the potential for milder afternoons. Compared to the preceding months, January stands out with its coldest temperatures, hinting at the depth of winter before a gradual warming trend emerges in February and March. This transition paves the way for milder spring conditions, making January a pivotal time of year in Southampton's climate narrative.

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

The chart illustrates January temperature patterns in Southampton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363639465565737469615041
Data source: Temperature data for Southampton 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 Southampton

In January, Southampton experiences a moderate precipitation level, averaging 90 mm (3.5 in) spread over approximately 9 days. This marks the beginning of the precipitation trend for the year, which generally sees a gradual increase in both amount and frequency as winter transitions into spring. While January's rainfall is lower compared to the following months, like February and April, which peak at 127 mm (5.0 in) and 139 mm (5.5 in) respectively, it sets a foundation for the wetter months ahead. The consistent weather pattern indicates that residents should prepare for a mix of rainy days, foreshadowing a lush spring as the season progresses.

January Precipitation Trends in Southampton

The chart displays monthly precipitation patterns in Southampton, 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.
JanFebMarAprMayJunJulAugSepOctNovDec901271121391307210510097159111152
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Southampton

In January, Southampton experiences a notable humidity level of 84%, setting the tone for the cooler months. This high humidity gradually decreases, with February seeing a slight dip to 82% and further declining to 81% in March. As spring approaches, humidity continues its downward trend, reaching 78% in April. By May and June, the levels stabilize at a more comfortable 69%, providing a refreshing contrast to the earlier months. The summer peaks in July with the lowest humidity of the year at 62%, allowing for enjoyable outdoor activities. However, as autumn sets in, humidity increases again, hitting 74% in October and rising to 82% by November, before ending the year at 80% in December. This cyclical pattern highlights how humidity in Southampton ebbs and flows throughout the year, characterized by a winter high and a summer low.

January Average Humidity in Southampton

This chart illustrates the average monthly humidity levels in Southampton, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Southampton

In January, Southampton experiences a moderate UV Index of 3, with a burn time of 30 minutes, signaling a safe opportunity for outdoor activities. As we transition into February, the UV Index rises to 5, suggesting the need for cautious exposure as daylight hours increase. By March, the index climbs to 6, marking the onset of higher sun intensity and shortening burn time to 25 minutes. This trend continues into the warmer months, peaking in June and July with a very high index of 10, where a mere 15 minutes can lead to burns. Interestingly, as summer wanes and autumn approaches, the UV Index gradually descends, dipping back to 4 in November and further to 2 in December, allowing for longer, safer outdoor enjoyment during the winter months. Keep an eye on local conditions to protect your skin throughout the year, especially on bright, sunny days. For detailed information, visit Southampton UV Index.

Maximum UV Index Levels in Southampton for January

The chart shows the monthly maximum UV Index (UVI) for Southampton 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.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098642
Data source: Southampton 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 Southampton

In Southampton, United States, the sunshine hours take a delightful upward turn as the year progresses. January starts with 153 hours of sunlight, setting the stage for a gradual increase. By February, this rises to 185 hours, hinting at the approaching warmth. March brings a significant leap to 261 hours, as spring begins to paint the landscape in vibrant colors. The trend continues into April and May, where sunshine peaks at 291 hours, fostering the perfect environment for outdoor activities. The summer months shine even brighter, with June offering 321 hours and July reaching an impressive 349 hours, making it the sunniest month of the year. As summer wanes, the hours begin to dip, yet August still enjoys 327 hours of sun, followed by a more gentle decline through the fall. By October, the daylight settles at 229 hours, before tapering off in the colder months of November and December. This rhythmic ebb and flow of sunshine highlights Southampton's seasonal transformation, inviting residents and visitors alike to revel in the changing beauty of each month.

Monthly Sunshine Duration in Southampton: January Highlighted

The January sunshine duration represents the total number of hours Southampton 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.
JanFebMarAprMayJunJulAugSepOctNovDec153h185h261h250h291h321h349h327h281h229h208h177h
Data source: Southampton January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Southampton During January

In Southampton, January brings a 50% chance of sunny weather, making it one of the better months for sunshine in the early year. While February sees a dip to 31%, the sun makes a comeback in March with a 59% likelihood. As spring approaches, the chances remain relatively stable, hovering around 49% in April and 45% in May. This pattern suggests that while January offers a promising start, the subsequent months can often be cloudier, with August experiencing the lowest odds at 34%. Overall, January stands out as a solid choice for sun-seekers eager to enjoy mild winter days in Southampton.

Percentage of Sunny Days in January in Southampton

The chart illustrates the percentage of sunny days in Southampton 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 Southampton experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec50%31%59%49%45%41%45%34%49%45%54%32%
Data source: Southampton January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Southampton in January

In January, Southampton enjoys about 9 hours of daylight, marking the start of a gradual increase in sunlight as the year progresses. By February, the days begin to stretch, offering 10 hours of light, and this upward trend continues into March with 11 hours. As spring approaches in April, daylight reaches 13 hours, peaking at 15 hours in the long, sunlit days of June. The summer solstice brings its zenith, but as July fades into August, daylight gently recedes to 14 hours and then 13 hours, signaling the transition towards autumn. September sees 12 hours of daylight, while October and November return to 11 and 9 hours, respectively, echoing the patterns of the previous year. This cyclical dance of daylight illustrates the rhythm of the seasons, culminating once again in December with a return to 9 hours as the year closes under the soft glow of winter.

Average Daylight Hours in Southampton for January

The chart illustrates the variation in daylight duration in Southampton throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 35m10h 38m11h 58m13h 19m14h 29m15h 3m14h 44m13h 43m12h 24m11h 3m9h 52m9h 16m
Data source: Southampton daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Southampton

In January, Southampton experiences an average wind speed of 7.0 m/s (16 mph), marking the month as one of the windiest of the year. This brisk breeze sets the tone for the winter season, with February closely trailing at 6.9 m/s (15 mph), before a gradual decline in wind activity is observed as spring approaches. By April, the winds further soften to 5.9 m/s (13 mph), heralding milder weather. As summer rolls in, the winds continue to mellow, reaching their calmest in July and August at 4.6 m/s (10 mph). Interestingly, a slight resurgence is noted in September and October, with speeds creeping back up to 5.8 m/s (13 mph) and 6.4 m/s (14 mph), respectively. This ebb and flow of wind throughout the year reflects the changing seasons, with January standing out as a remnant of winter’s robust character before the gentle embrace of summer.

Average January Wind Speed in Southampton

The chart displays monthly wind speed patterns in Southampton, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7.0 m/s6.96.55.95.75.24.64.65.86.46.56.3
Data source: Southampton January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Southampton Compares to Other Months

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

January and February exhibit similar temperature ranges, with both months experiencing a minimum of -13°C (8°F) and an average around 2°C (36°F). However, February is slightly cooler overall, with a maximum temperature of 12°C (53°F) compared to January's 13°C (55°F). Precipitation levels are notably higher in February, totaling 127 mm (5.0 in) over 12 days, while January sees 90 mm (3.5 in) over 9 days. Additionally, February's humidity is slightly lower at 82%, compared to January's 84%. For more detailed weather insights, check Southampton weather in February.

In January, temperatures in Southampton can be quite frigid, with minimums reaching -13°C (8°F) and an average temperature of around 2°C (36°F). Meanwhile, March brings a slight increase in warmth, with minimums around -7°C (20°F) and average highs of 4°C (39°F). Precipitation also sees a rise, as January records 90 mm (3.5 in) over 9 days, while March experiences 112 mm (4.4 in) across 10 days. Additionally, humidity levels remain relatively high in both months, with January at 84% and March slightly lower at 81%. For more detailed insights on March weather specifically, you can visit Southampton weather in March.

In January, Southampton experiences much colder temperatures, with a minimum as low as -13°C (8°F) and an average of just 2°C (36°F). The month sees around 90 mm (3.5 in) of precipitation spread over 9 days, along with high humidity levels at 84%. In contrast, April offers a notable warm-up, with temperatures ranging from a minimum of 0°C (32°F) to an average of 8°C (47°F) and reaching a maximum of 17°C (63°F). Precipitation increases to 139 mm (5.5 in) over 12 days, while humidity drops slightly to 78%. For more details on weather patterns in April, you can visit Southampton weather in April.

In January, weather in Southampton is characterized by cold temperatures, with a minimum of -13°C (8°F) and an average of 2°C (36°F), leading to a chilly and damp atmosphere, as evidenced by 90 mm (3.5 inches) of precipitation over 9 days and high humidity at 84%. In contrast, May brings a more temperate climate, with temperatures ranging from a minimum of 4°C (39°F) to a pleasant maximum of 21°C (70°F), averaging 13°C (55°F). However, this month also sees more precipitation at 130 mm (5.1 inches) over 13 days, though the humidity drops to a milder 69%. For a detailed look at May weather, visit Southampton weather in May.

In January, temperatures can plunge as low as -13°C (8°F), with an average of around 2°C (36°F) and highs reaching 13°C (55°F). The month sees significant precipitation of 90 mm (3.5 in) over 9 days, coupled with high humidity at 84%. In stark contrast, June offers a much milder climate, with temperatures ranging from a minimum of 11°C (52°F) to a comfortable average of 18°C (65°F), and maximums peaking at 25°C (77°F). Precipitation is lighter at 72 mm (2.8 in) and falls over just 8 days, accompanied by a lower humidity level of 69%. For more detailed information, you can check out Southampton weather in June.

In January, temperatures in Southampton can plummet to a chilling minimum of -13°C (8°F), with an average temperature of around 2°C (36°F) and a maximum reaching 13°C (55°F). The month sees significant precipitation, totaling 90 mm (3.5 in) over approximately 9 days, accompanied by high humidity levels averaging 84%. In stark contrast, July experiences much milder weather, with minimum temperatures around 16°C (62°F) and average highs of 23°C (73°F) peaking at 29°C (84°F). Precipitation slightly increases to 105 mm (4.1 in) but is spread over 11 days, with lower humidity at 62%. For a closer look at July weather details, check out Southampton weather in July.

January and August present stark contrasts in weather. In January, temperatures can drop to a frigid minimum of -13°C (8°F), with an average of around 2°C (36°F) and highs reaching 13°C (55°F). The month experiences considerable humidity at 84%, with precipitation totaling 90 mm (3.5 in) over approximately 9 days. In contrast, August brings a much warmer climate, featuring minimum temperatures of 17°C (63°F) and averaging 23°C (74°F), peaking at a pleasant 28°C (83°F). Despite the slightly higher precipitation of 100 mm (3.9 in) over 10 days, the humidity is lower at 65%. For more details, you can refer to Southampton weather in August.

January and September showcase stark contrasts in weather conditions. In January, temperatures can dip as low as -13°C (8°F), with an average of 2°C (36°F) and a maximum of 13°C (55°F). The month is marked by high humidity levels at 84% and receives about 90 mm (3.5 in) of precipitation over 9 days. Conversely, September offers a much milder climate, with temperatures ranging from a minimum of 12°C (55°F) to a pleasant maximum of 27°C (81°F), averaging around 20°C (69°F). Although September sees a slightly higher precipitation level of 97 mm (3.8 in) over 10 days, the humidity is notably lower at 68%. For more detailed information, you can check Southampton weather in September.

In January, the weather is significantly colder, with temperatures ranging from a chilly -13°C (8°F) to a maximum of 13°C (55°F) and an average of about 2°C (36°F). The month sees considerable precipitation, with around 90 mm (3.5 in) falling over 9 days, and humidity levels are quite high at 84%. In contrast, October offers a much milder climate, with temperatures varying from a minimum of 6°C (42°F) to a pleasant maximum of 25°C (77°F) and an average of 16°C (62°F). October experiences more precipitation at 159 mm (6.2 in) spread across 13 days, along with relatively lower humidity at 74%. For more details, you can check out Southampton weather in October.

In January, temperatures range from a brisk minimum of -13°C (8°F) to a maximum of 13°C (55°F), with an average of 2°C (36°F), making it the coldest month of the year. The month sees about 90 mm (3.5 in) of precipitation over nine days, accompanied by high humidity at 84%. In contrast, November presents milder temperatures, with a minimum of -5°C (24°F) and a maximum of 19°C (67°F), averaging around 10°C (50°F). Additionally, November experiences slightly higher precipitation at 111 mm (4.4 in) spread over ten days, and humidity levels are somewhat lower at 82%. For more details on November weather, you can visit Southampton weather in November.

In comparing the weather between January and December, January tends to be colder, with average temperatures hovering around 2°C (36°F) and reaching a maximum of 13°C (55°F), contrasted with December's average of 5°C (42°F) and a high of 16°C (61°F). Precipitation is generally lower in January, with 90 mm (3.5 in) over 9 days, compared to December’s 152 mm (6.0 in) across 11 days. Despite January’s slightly higher humidity at 84%, December has a relatively close level at 80%. For more details on December weather specifics, you can explore Southampton weather in December.

Compare Southampton's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Southampton

As January rolls into Southampton, it ushers in a dip in temperatures, making it one of the coolest months of the year. With its average temperature hovering around 2°C (36°F), residents experience chilly days and even colder nights that can plunge to -13°C (8°F). In contrast to milder months, January brings a notable increase in humidity at 84%, paired with approximately 9 days of precipitation accumulating to 90 mm (3.5 in). This combination of factors sets January apart, enveloping Southampton in a wintery embrace that starkly contrasts the more temperate conditions of other months. For a deeper understanding of the city's overall climate, be sure to check out Southampton Climate.