January Weather in Wellfleet, United States

Last updated: February 24, 2025

January in Wellfleet, United States, presents a chill that defines the heart of winter. With maximum temperatures peaking at 12°C (54°F) and minimums plunging to a brisk -12°C (11°F), residents and visitors alike can expect a crisp and refreshing atmosphere. The average temperature hovers around 2°C (37°F), making warmth essential during this season. Additionally, January witnesses precipitation totaling 95 mm (3.7 in), falling over 11 days, contributing to the region's 84% humidity. This month beckons those who embrace the beauty of a stark, wintry landscape, perfect for cozy moments and outdoor exploration alike.

January Temperature in Wellfleet

In Wellfleet, United States, January brings a chilly embrace, where temperatures fluctuate from a brisk -12°C (11°F) at night to a mild 12°C (54°F) during the day. This month marks the peak of winter, with an average temperature hovering around 2°C (37°F)—the coldest it gets before the gradual warming of spring. As January transitions into February, temperatures remain relatively stable, showcasing only slight variations, particularly at the extremes. The atmosphere is predominantly cold but begins to hint at the impending thaw of spring. This pattern of sharp contrasts between the daytime highs and nighttime lows is a hallmark of Wellfleet's winter, setting the stage for a slow but steady progression toward more temperate days ahead.

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

The chart illustrates January temperature patterns in Wellfleet, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec363638445161687065584840
Data source: Temperature data for Wellfleet 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 Wellfleet

In January, Wellfleet experiences an average precipitation of 95 mm (3.7 in) over approximately 11 days, marking the beginning of the year with a moderate level of rainfall. As winter transitions to spring, February sees an increase in both precipitation and the number of rainy days, reaching 117 mm (4.6 in). March follows suit, with precipitation slightly rising to 119 mm (4.7 in), maintaining a consistent trend in rain frequency. April continues this upward trajectory, with 130 mm (5.1 in), while May drops slightly to 106 mm (4.2 in). This pattern showcases a peak in rainfall from late fall to early spring, significantly influenced by coastal weather systems. As the summer months approach, a noticeable decline in precipitation is observed, particularly in July and August, where rainfall averages drop to 84 mm (3.3 in) and 74 mm (2.9 in) respectively. This trend reflects a shift towards drier weather, which contrasts with the wetter months at the start of the year, setting the stage for the changing seasons in Wellfleet.

January Precipitation Trends in Wellfleet

The chart displays monthly precipitation patterns in Wellfleet, 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.
JanFebMarAprMayJunJulAugSepOctNovDec95117119130106888474110161106138
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Wellfleet

In Wellfleet, United States, January ushers in a notably high humidity of 84%, a trend that persists into February, suggesting a dampness that characterizes the heart of winter. As the seasons shift into spring, the humidity gradually decreases, dipping to 82% in March and further to 79% by April. The transition into the warmer months sees a continued decline, with May reaching 75%—the lowest until fall—before stabilizing around 76% during the peak summer months of July and August. Interestingly, as autumn approaches, humidity levels rise again, climbing back to 80% in both November and December, reflecting the cyclical nature of coastal weather in this charming seaside town. This pattern highlights the significant role that seasonal changes play in shaping the atmospheric conditions throughout the year.

January Average Humidity in Wellfleet

This chart illustrates the average monthly humidity levels in Wellfleet, 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%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Wellfleet

In January, Wellfleet experiences a low UV Index of 2, indicating minimal risk of harm from unprotected sun exposure, with a burn time of 45 minutes. This trend of lower UV levels continues into December, as the index drops back to 2, suggesting a season of reduced sun intensity. As the year progresses, however, the UV index steadily climbs; by April, it soars to a very high level of 8, with burn times decreasing significantly to just 15 minutes. This pattern peaks in June with an index of 10, emphasizing the urgent need for sun protection during the summer months. Notably, months like July and August remain high at 9, reinforcing the importance of vigilance against sunburn. As fall approaches, the UV index begins to taper, reaching 6 in October before settling back into moderate levels by November. For more detailed information, you can check the Wellfleet UV Index.

Maximum UV Index Levels in Wellfleet for January

The chart shows the monthly maximum UV Index (UVI) for Wellfleet 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.
JanFebMarAprMayJunJulAugSepOctNovDec2458910998642
Data source: Wellfleet 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 Wellfleet

In Wellfleet, January brings a modest 136 hours of sunshine, setting the stage for a gradual increase in brightness as winter transitions into spring. The days grow steadily longer, with February offering 180 hours, paving the way for more daylight. By March, the sun shines brightly for 252 hours, heralding the arrival of warmer weather. This upward trend continues into April with 239 hours and further peaks in May with an impressive 293 hours. As summer approaches, June and July bask in an abundance of sunlight, recording 322 hours and 339 hours respectively, creating a vibrant atmosphere ideal for outdoor adventures. As the season wanes, August still enjoys a substantial 328 hours, but September sees a noticeable decline to 277 hours, signifying the onset of autumn. The retreat of sunny days continues into October with 229 hours, before November and December wrap up the year with 201 and 159 hours of sunshine, respectively. This pattern underscores the cyclical nature of sunlight in Wellfleet, where each month brings its own unique allure.

Monthly Sunshine Duration in Wellfleet: January Highlighted

The January sunshine duration represents the total number of hours Wellfleet 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.
JanFebMarAprMayJunJulAugSepOctNovDec136h180h252h239h293h322h339h328h277h229h201h159h
Data source: Wellfleet January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Wellfleet During January

In Wellfleet, United States, the likelihood of sunny weather in January is relatively modest, with a 32% chance of sun. This trend continues into February, where the probability dips slightly to 25%. However, the arrival of spring highlights a significant increase in sunny days, as March boasts a much-improved 54% chance of sunshine. This upward trend continues through to September, with sunny weather peaking later in the year, notably in September at 49% and October at 43%. Overall, while January may not be the sunniest month, a notable transition begins as winter gives way to the brighter days of spring, promising a more cheerful outlook just around the corner.

Percentage of Sunny Days in January in Wellfleet

The chart illustrates the percentage of sunny days in Wellfleet 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 Wellfleet experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec32%25%54%43%42%39%37%36%49%43%47%26%
Data source: Wellfleet January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Wellfleet in January

In Wellfleet, United States, January experiences approximately 9 hours of daylight, marking the season's lull before a gradual increase in sunlight. As the days lengthen in February, the daylight extends to 10 hours, hinting at the approaching warmth of spring. By March, the light increases further to 11 hours, welcoming the revitalization of nature. A significant leap occurs in April, where daylight stretches to 13 hours, and May bathes the region in 14 hours of sunlight, building anticipation for summer. June reaches its peak with 15 hours of daylight, offering long, vibrant days. As summer transitions into fall, daylight begins to wane—July and August maintain 14 and 13 hours respectively, before dropping to 12 hours in September. October continues this trend with 11 hours, while November and December return to 9 hours, closing the cycle. The rhythm of daylight in Wellfleet reflects the natural ebb and flow of the seasons, inviting residents to embrace the changes throughout the year.

Average Daylight Hours in Wellfleet for January

The chart illustrates the variation in daylight duration in Wellfleet throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 30m10h 35m11h 58m13h 22m14h 34m15h 10m14h 50m13h 46m12h 25m11h 1m9h 47m9h 9m
Data source: Wellfleet daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Wellfleet

In January, Wellfleet experiences a brisk average wind speed of 8.2 m/s (18 mph), making it one of the windiest months of the year. As winter progresses into February, the winds pick up slightly to 8.3 m/s (19 mph), maintaining a strong presence before tapering off in March to 8.1 m/s (18 mph). The trend shifts toward calmer conditions as spring approaches, with April's winds decreasing to 7.1 m/s (16 mph), and continuing this gentle decline into May at 6.4 m/s (14 mph). The summer months see the calmest winds, reaching their lowest in July at 5.5 m/s (12 mph) and August at 5.1 m/s (11 mph). As fall returns, wind speeds gradually climb again, peaking in November at 7.7 m/s (17 mph) before stabilizing in December at 7.8 m/s (18 mph). This cyclical pattern illustrates the dynamic nature of Wellfleet's coastal climate, where winter and early spring bring vitality through stronger winds, contrasting the tranquil breezes of summer.

Average January Wind Speed in Wellfleet

The chart displays monthly wind speed patterns in Wellfleet, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8.2 m/s8.38.17.16.46.75.55.16.47.27.77.8
Data source: Wellfleet January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Wellfleet Compares to Other Months

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

January and February exhibit quite similar weather patterns, with average temperatures hovering around 2°C (37°F) for both months. January experiences slightly colder nights, with minimum temperatures dipping to -12°C (11°F), compared to February's minimum of -11°C (13°F). In terms of precipitation, February is wetter than January, receiving 117 mm (4.6 in) over 12 days, whereas January has 95 mm (3.7 in) across 11 days. Both months share the same humidity level of 84%, creating a consistently damp atmosphere. For more detailed weather information, check out Wellfleet weather in February.

In January, the weather is typically colder, with minimum temperatures plummeting to -12°C (11°F) and an average of 2°C (37°F). The month averages around 95 mm (3.7 in) of precipitation over 11 days, accompanied by a high humidity level of 84%. By March, temperatures begin to rise slightly, featuring a minimum of -8°C (17°F) and an average of 3°C (38°F), while still reaching a maximum of 12°C (54°F). Precipitation is slightly more abundant in March, totaling 119 mm (4.7 in) over the same number of days, but humidity remains relatively stable at 82%. For more detailed insights, you can explore Wellfleet weather in March.

In January, temperatures can be quite frigid, with minimums dropping to -12°C (11°F) and an average high of just 12°C (54°F), while humidity levels hover around 84%. This month also experiences considerable precipitation, totaling 95 mm (3.7 in) over 11 days. In contrast, April brings a welcome shift in the weather, with temperatures ranging from a minimum of 0°C (33°F) to a maximum of 14°C (58°F) and an average of 7°C (44°F). Although April sees slightly higher precipitation at 130 mm (5.1 in) across 12 days, humidity levels decrease to 79%, marking a shift towards more moderate spring conditions. For more detailed insights on April weather, check out Wellfleet weather in April.

In January, the weather is characterized by cold temperatures, with a minimum of -12°C (11°F) and an average of 2°C (37°F), peaking at a maximum of 12°C (54°F). The month sees significant precipitation, totaling 95 mm (3.7 in) across 11 days, accompanied by high humidity levels of 84%. In contrast, May brings milder weather, with minimum temperatures around 4°C (40°F) and average highs reaching 18°C (65°F). Although May has slightly more precipitation at 106 mm (4.2 in), the humidity is lower at 75%, creating a more comfortable environment. For more specific information about weather conditions in May, check out Wellfleet weather in May.

In January, temperatures can drop as low as -12°C (11°F) with an average of 2°C (37°F), while the maximum reaches 12°C (54°F). This winter month also sees a significant amount of precipitation, totaling 95 mm (3.7 in) over 11 days, with humidity levels sitting at a high 84%. In contrast, June offers a much milder climate, with temperatures ranging from a minimum of 10°C (50°F) to an average of 16°C (61°F) and a maximum of 23°C (73°F). The precipitation in June is slightly lower at 88 mm (3.5 in) across 10 days, accompanied by a more comfortable humidity level of 78%. For more specific details about June weather, check out Wellfleet weather in June.

In January, the weather is notably colder, with temperatures ranging from a minimum of -12°C (11°F) to a maximum of 12°C (54°F) and an average temperature of around 2°C (37°F). The month sees significant precipitation, totaling 95 mm (3.7 inches) over 11 rainy days, accompanied by a high humidity level of 84%. In contrast, July offers a much warmer climate, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 26°C (79°F) and an average temperature of 20°C (69°F). Precipitation is slightly lower at 84 mm (3.3 inches), occurring over just 8 days, and the humidity decreases to 76%. For more detailed information on July weather, visit Wellfleet weather in July.

In January, the weather is characterized by cold temperatures, with nighttime lows plummeting to -12°C (11°F) and average highs reaching only 12°C (54°F). This winter month also sees considerable precipitation of 95 mm (3.7 in) over 11 days, accompanied by high humidity levels averaging 84%. In contrast, August brings much milder conditions, with temperatures ranging from a minimum of 16°C (61°F) to a pleasant average of 21°C (70°F) and maximums hitting 26°C (79°F). The precipitation in August is lower at 74 mm (2.9 in) across just 7 days, and the humidity is slightly reduced to 76%. For more information on the weather in August, visit Wellfleet weather in August.

January and September present starkly contrasting weather conditions. In January, temperatures can plunge as low as -12°C (11°F), with an average temperature of 2°C (37°F) and a maximum of 12°C (54°F). On the other hand, September enjoys much milder temperatures, where lows are around 13°C (56°F) and averages reach 19°C (66°F), peaking at 24°C (76°F). Precipitation is slightly higher in September at 110 mm (4.3 in) over 10 days, compared to January’s 95 mm (3.7 in) over 11 days, while humidity levels are noticeably lower in September at 75% versus January’s 84%. For a closer look at September weather specifics, you can visit Wellfleet weather in September.

In January, the weather is much colder, with temperatures ranging from a minimum of -12°C (11°F) to a maximum of 12°C (54°F) and an average temperature of only 2°C (37°F). The humidity is notably high at 84%, and the month sees around 95 mm (3.7 in) of precipitation over 11 days. In contrast, October experiences milder temperatures, with a minimum of 4°C (40°F), an average of 15°C (58°F), and a maximum of 21°C (70°F). While it has similar precipitation days, October receives more rainfall at 161 mm (6.3 in) and a lower humidity level of 75%. For more detailed information, you can check Wellfleet weather in October.

In comparing the weather between January and November, January is notably colder, with average temperatures ranging from a chilly -12°C (11°F) to a milder 12°C (54°F), while November experiences a more moderate range, with temperatures from -7°C (20°F) to a maximum of 18°C (65°F). Despite both months having significant precipitation, January sees slightly less, totaling 95 mm (3.7 in) over about 11 days, compared to November's 105 mm (4.2 in) across 12 days. Additionally, humidity levels are slightly higher in January at 84%, compared to 80% in November. For more information on November’s climate, you can check out Wellfleet weather in November.

In comparing the weather of January and December, January tends to be slightly colder overall, with average temperatures ranging from a minimum of -12°C (11°F) to a maximum of 12°C (54°F). In contrast, December has higher average temperatures, with a minimum of -10°C (15°F) and a maximum of 15°C (60°F). Precipitation is also more frequent in December, with 138 mm (5.4 in) over 13 days compared to January's 95 mm (3.7 in) across 11 days. Humidity levels are marginally higher in January at 84%, compared to December's 80%. For more details on December weather, you can visit Wellfleet weather in December.

Compare Wellfleet's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Wellfleet

As January rolls in, Wellfleet transforms into a chilly wonderland, where the temperatures dip significantly compared to the milder months of fall and summer. With an average chill in the air, this month stands out for its frosty nights and occasional light snow, making it a stark contrast to the warmth of previous seasons. The heightened humidity adds a layer of crispness to the atmosphere, accompanied by frequent bouts of precipitation that keep the landscape vibrant and alive. Though this month may be colder and wetter than others, it offers a unique charm, enticing those prepared to embrace the beauty of winter. For more insights into Wellfleet's distinctive climate, visit Wellfleet Climate.