Last updated: March 17, 2025
In January, Southampton, United Kingdom, experiences a chilly climate with an average temperature around 5°C (42°F). Expect maximum highs of 14°C (57°F), while cold snaps can dip the temperature to a minimum of -3°C (27°F). The month is characterized by moderate precipitation, accumulating to 52 mm (2.1 in) across 10 days, creating a moist atmosphere with humidity levels reaching a notable 91%. This combination of cool temperatures and frequent rain underscores the need for warm clothing and waterproof gear for those exploring the city during this winter month.
In January, temperatures in Southampton range from a chilly -3°C (27°F) at night to a mild 14°C (57°F) during the day, with an average of 5°C (42°F). This marks the coldest month for the city, though the temperatures begin to rise slightly as winter gives way to spring. Notably, February sees a slight dip in the minimum temperature to -6°C (21°F), but daytime highs can reach 16°C (62°F), hinting at the upcoming warmth. As the season transitions into March, the average climbs to 8°C (46°F), reflecting longer days and the gradual return of springtime. With each passing month, a notable trend emerges: temperatures steadily increase, peaking in the summer months of July and August, showcasing a vibrant range from 7°C (45°F) at night to sizzling highs of 31°C (89°F) during the day. This seasonal shift paints a picture of Southampton's mild maritime climate, where winter's chill is often brief and welcomingly followed by the warm embrace of spring and summer.
In January, Southampton experiences an average precipitation of 52 mm (2.1 in) over approximately 10 days, setting the tone for the winter season. This amount marks a moderate start, contrasting with the wetter months that follow. As the year progresses, February brings a slight increase to 60 mm, and March sees further escalation to 67 mm. Notably, the trend highlights a peak in precipitation during the autumn months, especially in October when over 103 mm falls, showcasing the region's characteristic rainy streak. The pattern indicates that while January is relatively dry compared to later months, it acts as a precursor to the wetter conditions typical of early spring and autumn in this coastal city.
In January, Southampton experiences a notable humidity level of 91%, making it one of the wettest months of the year. This peak in humidity sets the tone for a generally moist winter, as the subsequent months of February and March follow closely with 89% and 86% humidity, respectively. As spring approaches in April and May, humidity begins to dip slightly to 85% and 79%, hinting at a gradual transition towards drier conditions. However, the humidity levels remain relatively stable, hovering around the 80% mark from June to August, before rising again in the fall with an 82% average in September. As the year winds down, the humidity returns to its higher averages in October and November, both at 90% and 92%, closing the year on a damp note. This cyclical pattern underscores Southampton's seaside climate, characterized by persistent moisture, especially during the winter months.
In January, Southampton experiences a UV Index of 1, categorized as low, which means you can enjoy outdoor activities without much concern for sunburn, with a burn time of approximately 45 minutes. As the month transitions into February, the UV Index slightly rises to 2, still within the low exposure category, keeping the burn time consistent at 45 minutes. This low trend continues into the early spring months, with March seeing the index increase to 4 (moderate), signaling a need for a bit more caution as exposure times decrease to 30 minutes. As we move into April and May, the UV Index escalates to 6 and 7 (high), respectively, reducing the safe burn time to 25 minutes. The highest levels occur in June and July with a UV Index of 8, classified as very high, which significantly shortens burn time to just 15 minutes. In August and September, the index dips slightly, but remains in the high category, before tapering off again in the fall months of October (4, moderate) and November (2, low). This pattern emphasizes the importance of tracking UV levels throughout the year, especially as the sun's intensity increases from spring to early summer. For more detailed information, check the Southampton UV Index.
UV Risk Categories
In January, Southampton experiences a modest 98 hours of sunshine, marking the beginning of the year with cooler, overcast days. However, as winter transitions to spring, sunshine hours steadily increase, with February seeing a rise to 138 hours and March boosting that number to 193 hours. By April, the days become notably brighter, providing 316 hours of sunny moments, while May basks in the glow of 384 hours—the promise of summer is unmistakable. The peak comes in July, when sunny hours reach 395, making it the sunniest month of the year. As summer begins to wane, sunshine hours gracefully decline, with August offering 354 hours before transitioning into a cooler September with 287 hours. The trend continues into autumn and winter, with sunshine dwindling to 141 hours in November and dipping further to 108 hours by December, emphasizing the cyclical nature of light in this vibrant coastal city.
In Southampton, January brings a modest 22% chance of sunny weather, marking it as one of the cloudier months of the year. As winter deepens, the likelihood of sunshine tends to increase slightly in February, reaching 25%, before making a more noticeable leap in the spring months, with a significant jump to 33% in March and an even brighter 55% in April. This trend illustrates a gradual transition from the grey, overcast days of winter to the sunnier skies of spring, showcasing how January's dreariness is a prelude to the more cheerful weather that follows. As such, while January may not be ideal for sun-seekers, the promise of clearer days is just around the corner.
In Southampton, January ushers in a crisp winter with only 8 hours of daylight, marking the start of a gradual increase as the months progress. By February, sunlight stretches to 10 hours, hinting at the arrival of spring. March continues this trend, bringing 11 hours, while April sees a notable leap to 13 hours as nature awakens. This pattern continues into May, where the days brighten significantly with 15 hours of daylight, peaking in June at a vibrant 16 hours. As summer settles in, the daylight begins to wane, with July and August providing 15 and 14 hours, respectively. The shift towards autumn is marked by a decrease to 12 hours in September, followed by a steady decline through October and November, landing back at 8 hours in the final month of the year, and dipping to just 7 hours in December. This cyclical dance of light starkly illustrates the seasonal rhythms in Southampton, celebrating the gradual return of longer days as the year unfolds.
In January, Southampton greets the year with a brisk average wind speed of 4.6 m/s (10 mph), setting a refreshing tone for winter. As the month transitions into February, the winds pick up slightly, rising to 5.2 m/s (12 mph), suggesting a more dynamic atmosphere. However, come March, the winds mellow out again to 4.5 m/s (10 mph), indicating a trend of fluctuating breezes early in the year. April brings a more gentle touch with winds declining to 3.4 m/s (8 mph), while May sees a return to the 10-mph mark, reminding us that spring can still hold its own. The summer months bring further calming, with June and July averaging around 3.2 to 3.4 m/s (7 to 8 mph), making for pleasantly serene days. As autumn approaches, October reintroduces stronger winds at 4.5 m/s (10 mph), hinting at the seasonal shifts ahead, while by the time we reach December, the wind picks up again to match January's briskness. This yearly wind pattern in Southampton showcases a rhythm of calm and gust, echoing the town's charming maritime ambiance.
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 notable differences in weather conditions. In January, temperatures range from a minimum of -3°C (27°F) to a maximum of 14°C (57°F), with an average of 5°C (42°F). The month experiences around 52 mm (2.1 in) of precipitation across 10 days, along with high humidity levels at 91%. In contrast, February is slightly colder at night, with a minimum temperature of -6°C (21°F), but it averages a bit warmer overall at 6°C (44°F) and can reach up to 16°C (62°F) during the day. Precipitation increases to 60 mm (2.4 in) over 11 days, and humidity remains relatively high at 89%. For more detailed information, you can check Southampton weather in February.
In January, the weather in Southampton features colder temperatures, with a minimum of -3°C (27°F) and an average of 5°C (42°F), while the maximum reaches 14°C (57°F). The month sees around 52 mm (2.1 in) of precipitation, spread over approximately 10 days, and maintains a relatively high humidity level of 91%.
In contrast, March welcomes slightly warmer temperatures, with a minimum of -6°C (22°F) and an average of 8°C (46°F), peaking at 20°C (68°F). The rainfall increases to 67 mm (2.6 in) over about 13 days, and humidity decreases slightly to 86%. For a more detailed look at March's weather patterns, visit Southampton weather in March.
January and April weather exhibit notable differences in temperature and precipitation. In January, temperatures range from a chilly -3°C (27°F) at night to a more moderate average of 5°C (42°F) during the day, peaking at 14°C (57°F). The month tends to be quite damp, with 52 mm (2.1 in) of precipitation over about 10 days and a high humidity level of 91%.
In contrast, April shows a significant warming trend, with nighttime lows still at -3°C (27°F) but an average temperature rising to 10°C (49°F) and reaching a maximum of 24°C (76°F). Precipitation decreases to 39 mm (1.5 in) over just 7 days, and humidity drops slightly to 85%. This transition makes April a much milder and drier month compared to the depths of winter. For more detailed information, you can check Southampton weather in April.
In January, Southampton experiences its coldest temperatures, with averages ranging from a minimum of -3°C (27°F) to a maximum of 14°C (57°F). The month is characterized by high humidity at 91% and frequent precipitation, totaling 52 mm (2.1 in) over about 10 days. In contrast, May brings a significant warming trend, with average temperatures ranging from 1°C (33°F) to a much warmer maximum of 25°C (77°F). Although May sees slightly higher rainfall, totaling 70 mm (2.8 in) over the same number of days, the humidity drops to a more comfortable 79%. For a detailed comparison, you can check out Southampton weather in May.
In January, the weather is considerably colder, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 14°C (57°F), averaging around 5°C (42°F). This month experiences high humidity at 91% and sees about 52 mm (2.1 in) of precipitation over roughly 10 days. In stark contrast, June brings much warmer temperatures, with a minimum of 6°C (43°F), an average of 16°C (61°F), and a maximum reaching up to 30°C (87°F). Though June sees more precipitation at 83 mm (3.3 in) over the same number of days, the humidity drops to 80%. For a closer look at June's weather, you can check Southampton weather in June.
In January, Southampton experiences chilly temperatures with a minimum of -3°C (27°F) and an average temperature of 5°C (42°F), peaking at a maximum of 14°C (57°F). The month is characterized by high humidity at 91% and around 52 mm (2.1 in) of precipitation over approximately 10 days. In contrast, July brings a significant warmth, with temperatures ranging from a minimum of 7°C (46°F) to a pleasant average of 18°C (65°F), and reaching a high of 31°C (88°F). While July sees slightly more precipitation at 58 mm (2.3 in) over 11 days, the humidity drops to a comfortable 71%. For a deeper look at July weather specifics, you can check Southampton weather in July.
In January, the weather is notably chilly, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 14°C (57°F). The month experiences an average temperature of around 5°C (42°F) and a high humidity level of 91%, complemented by 52 mm (2.1 in) of precipitation over approximately 10 days. In stark contrast, August is much warmer, with temperatures varying from a minimum of 7°C (45°F) to a maximum of 31°C (89°F) and an average of 17°C (63°F). Although August sees an increase in precipitation to 71 mm (2.8 in) over 12 days, the humidity drops significantly to 76%. For more details on the climate during this month, you can check Southampton weather in August.
In January, the weather in Southampton is significantly colder, with average temperatures ranging from a chilly -3°C (27°F) to a max of 14°C (57°F). The month experiences high humidity levels at 91% and sees about 52 mm (2.1 in) of precipitation over approximately 10 days. In contrast, September brings a much warmer climate, with temperatures ranging from a more moderate 3°C (37°F) to a pleasant max of 28°C (82°F). Additionally, September enjoys lower humidity at 82% and slightly less rainfall, totaling around 47 mm (1.9 in) across about 9 days. For more detailed insights, you can check Southampton weather in September.
In comparison to January, October experiences milder temperatures, with average highs of 21°C (71°F) compared to January's max of 14°C (57°F). While January sees minimum temperatures plummet to -3°C (27°F), October's lows are a more manageable 0°C (32°F). Precipitation is notably higher in October, totaling 103 mm (4.1 in) over 13 days, whereas January has 52 mm (2.1 in) across just 10 days. The humidity levels remain relatively close, with January at 91% and October at 90%, contributing to a damp, chilly feel in both months. For a detailed look at October weather specifically, check out Southampton weather in October.
When comparing the weather in January and November, January typically experiences slightly cooler temperatures, with a minimum of -3°C (27°F) and an average of 5°C (42°F), as opposed to November's min of -2°C (28°F) and an average of 8°C (47°F). November also has a higher maximum temperature, reaching up to 16°C (61°F) compared to January's high of 14°C (57°F). Additionally, November has more precipitation at 65 mm (2.6 in) over 11 days, while January sees 52 mm (2.1 in) across 10 days. Both months maintain high humidity levels, with November at 92% and January at 91%. For more details on November weather, you can visit Southampton weather in November.
In comparing the weather of January and December, both months experience similar minimum temperatures, hovering around -3°C (27°F). However, January tends to be slightly cooler overall with an average temperature of 5°C (42°F) compared to December's warmer average of 7°C (45°F). Additionally, December sees more precipitation, with 93 mm (3.7 in) falling over 13 days, while January has less rainfall at 52 mm (2.1 in) across 10 days. Humidity levels are fairly consistent between the two months, with January at 91% and December at 92%. For more detailed insights, you can check Southampton weather in December.
As January settles over Southampton, the weather brings a cool, crisp atmosphere that starkly contrasts with the milder months that precede and follow it. With average temperatures hovering around 5°C (42°F) and occasional highs reaching 14°C (57°F), this is a time for bundling up against the chill, especially with the night temperatures dipping to a brisk -3°C (27°F). The month is marked by increased humidity at 91%, making those shorter, damp days feel even colder. Precipitation is considerable, with rain falling on about 10 days, adding a sense of wintery melancholy. For a deeper dive into how January's weather fits into the broader patterns of the city's climate, check out Southampton Climate.