January Weather in Oceanside, United States

Last updated: February 24, 2025

January in Oceanside, United States, brings a pleasant coastal climate marked by an average temperature of 14°C (58°F). During this month, temperatures can peak at a maximum of 27°C (82°F), providing warm days, while dropping to a cool minimum of 8°C (47°F) at night. Although the month experiences some rainfall, with a total precipitation of 54 mm (2.1 in) scattered over 5 days, the overall humidity remains relatively high at 74%, contributing to a refreshing coastal atmosphere. Whether you're looking to enjoy sunny beach days or cooler evenings, January offers a delightful blend of weather for all who visit.

January Temperature in Oceanside

In Oceanside, United States, January offers a mild respite from the winter chill, with temperatures ranging from a cool 8°C (47°F) at night to a pleasant 27°C (82°F) during the day, creating a cozy average of 14°C (58°F). This relatively warm start to the year sets the tone for the months ahead; February mirrors January's mild conditions, while a gradual warming trend unfolds as spring approaches, with March and April showcasing rising averages of 15°C (59°F) and 16°C (61°F), respectively. The peak warmth arrives in mid-summer, with July and August seeing daily maximums soar to 35°C (94°F) and 30°C (86°F). The overall trend reflects steady, comfortable temperatures, making Oceanside an appealing destination for those seeking a serene winter getaway.

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

The chart illustrates January temperature patterns in Oceanside, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec585759616266717271696459
Data source: Temperature data for Oceanside generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Oceanside

In January, Oceanside experiences 54 mm (2.1 in) of precipitation, marking the month as one of the wetter periods of the year with rainfall occurring on 5 days. This sets a backdrop of moderate moisture, which is slightly lower than the 63 mm (2.5 in) recorded in December, but higher than the drier months that follow. As the year progresses, rainfall typically decreases significantly, with February peaking slightly higher at 56 mm (2.2 in), followed by a notable drop to 45 mm (1.8 in) in March. By April, precipitation diminishes to just 23 mm (0.9 in), paving the way for a dry spell through the summer months, where June, July, and August feature virtually negligible rainfall. Overall, January's precipitation sets a trend of declining moisture as Oceanside transitions into drier climates in the ensuing months, with only intermittent rainfall noted later in the year.

January Precipitation Trends in Oceanside

The chart displays monthly precipitation patterns in Oceanside, 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.
JanFebMarAprMayJunJulAugSepOctNovDec54564523143313102163
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Oceanside

In January, Oceanside experiences a relatively high humidity level at 74%, setting the tone for a month characterized by pleasant, if damp, coastal conditions. As the year progresses into February, humidity peaks at 79%, making it the most humid month of the year. Following this spike, levels dip slightly in March to 75% and continue to stabilize throughout the spring and into early summer, hovering around the low 70s. Notably, April and May both record 70% humidity, indicating a refreshing breeze before the summer heat. As summer approaches, humidity remains consistent with slight variations, hitting 73% in July and 72% in June. However, a gradual decline is evident from August to October, where humidity levels drop to 69% and further down to 67%, highlighting the dryer autumn months. By December, humidity sees a mild resurgence to 71%, closing the year on a moister note. Overall, Oceanside's humidity exhibits a distinct pattern, primarily influenced by seasonal changes, with a pronounced peak in the winter and a gradual decline as the year unfolds.

January Average Humidity in Oceanside

This chart illustrates the average monthly humidity levels in Oceanside, 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.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Oceanside

In January, Oceanside experiences a moderate UV Index of 4, with a burn time of approximately 30 minutes. This sets the stage for increasing UV exposure as the year progresses, with February's index rising to 6, indicating a shift to the high category where burn times decrease to 25 minutes. As spring approaches, the UV Index surges sharply, reaching 8 in March and soaring to 10 by April, prompting a very high exposure rating and a burn time reduced to just 15 minutes. This trend continues into the summer months with an extreme peak of 12 in June, before gradually tapering off to 10 by August and then stabilizing at around 7 to 5 in October and November. As a result, sun safety becomes increasingly crucial as the season progresses, making it essential to stay informed about daily UV levels. For more details on seasonal UV exposure and safety tips, visit Oceanside UV Index.

Maximum UV Index Levels in Oceanside for January

The chart shows the monthly maximum UV Index (UVI) for Oceanside 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.
JanFebMarAprMayJunJulAugSepOctNovDec468101112111010754
Data source: Oceanside 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 Oceanside

January in Oceanside greets you with approximately 189 hours of sunshine, a gentle start to the year that sets the stage for a gradual increase in brightness. As the months progress, the days grow longer, peaking in July with an impressive 376 hours of sun, making it the sunniest month. Following July, while the sunlit hours begin to wane slightly, the region still enjoys a generous 359 hours in August. The gradual decline continues into the fall months, with October offering 292 hours and November bringing a cozy 254 hours. By December, sunshine dips to 225 hours, wrapping up the year on a softer note. This trend of increasing daylight from the start of the year, culminating in the peak summer brightness, beautifully encapsulates the delightful climate of Oceanside, making it a perfect year-round destination for sun-seekers.

Monthly Sunshine Duration in Oceanside: January Highlighted

The January sunshine duration represents the total number of hours Oceanside 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.
JanFebMarAprMayJunJulAugSepOctNovDec189h238h291h317h347h363h376h359h314h292h254h225h
Data source: Oceanside January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Oceanside During January

In Oceanside, United States, January boasts a 59% chance of sunny weather, setting a promising tone for the year. This likelihood remains steady through February, suggesting that residents and visitors can expect ample sunshine at the onset of the year. As we move into March, the odds improve slightly to 62%, reflecting the gradual advent of spring. However, from April onward, there’s a noticeable decline in sunny conditions, with the chance dipping as low as 34% in May. Interestingly, the trend here highlights how the charm of winter sunshine fades into the more overcast conditions of late spring and summer. The weather picks up again in late fall, with both October and November matching January's sunny prospects. Overall, while January offers a solid start to the year’s sunshine, the variability in coming months reminds us of the unpredictable nature of coastal weather.

Percentage of Sunny Days in January in Oceanside

The chart illustrates the percentage of sunny days in Oceanside 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 Oceanside experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec59%59%62%47%34%45%53%56%58%63%63%46%
Data source: Oceanside January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Oceanside in January

In Oceanside, United States, January brings about 10 hours of daylight, marking the start of the year with shorter days. As winter transitions into spring, daylight gradually increases; by February, residents enjoy 11 hours, and March sees an expansion to 12 hours, highlighting the uplifting arrival of longer, sun-drenched days. This trend continues into April and May, where daylight peaks at 13 hours, inviting outdoor activities and vibrant community gatherings. The sun further graces Oceanside during the summer months of June and July, each offering an impressive 14 hours of daylight. As we approach autumn, daylight begins to wane, descending to 13 hours in August, and gradually tapering off to 10 hours in November. The year closes with December's 9 hours of daylight, reminding us of the cyclical nature of light and dark that defines life along this scenic coastal region.

Average Daylight Hours in Oceanside for January

The chart illustrates the variation in daylight duration in Oceanside throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 13m11h12h13h 1m13h 52m14h 18m14h 4m13h 18m12h 19m11h 18m10h 25m9h 58m
Data source: Oceanside daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Oceanside

In Oceanside, United States, January breezes in with an average wind speed of 2.7 m/s (6 mph), setting a tone of refreshing calm that characterizes the month. As winter transitions into spring, a subtle rise in wind speeds can be observed in March, peaking at 2.9 m/s (7 mph), before returning to a stable 2.8 m/s (6 mph) in April. This peak hints at the invigorating shift from the chill of winter to the warmth of the upcoming seasons. The summer months, however, bring a gentle tapering off, with July and August settling at 2.3 m/s (5 mph), fostering those tranquil beach days synonymous with coastal living. Interestingly, the wind picks up again towards the end of the year, with December matching January’s winds at 2.9 m/s (6 mph), wrapping up the year with a familiar, brisk embrace. Overall, the wind patterns suggest a rhythmic ebb and flow, perfectly complementing the seasonal transformations along the coast.

Average January Wind Speed in Oceanside

The chart displays monthly wind speed patterns in Oceanside, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.7 m/s2.22.92.82.72.52.32.32.32.42.02.9
Data source: Oceanside January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Oceanside Compares to Other Months

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

In comparing the weather between January and February, both months experience similar average temperatures, with January having a minimum of 8°C (47°F) and a maximum of 27°C (82°F), while February sees slightly cooler temperatures, with a minimum of 7°C (44°F) and a maximum of 25°C (78°F). Precipitation is slightly higher in February, totaling 56 mm (2.2 in) over 6 days compared to January's 54 mm (2.1 in) over 5 days. Additionally, humidity levels increase from January's 74% to February's 79%, making February feel a bit more humid. For more details on February weather specifics, you can explore Oceanside weather in February.

January and March exhibit mild temperatures, with January showing a minimum of 8°C (47°F) and an average of 14°C (58°F), while March has slightly higher figures, with a minimum of 9°C (48°F) and an average of 15°C (59°F). The maximum temperatures in January reach up to 27°C (82°F), which is warmer than March's maximum of 24°C (75°F). In terms of precipitation, January records 54 mm (2.1 in) over 5 days, while March sees a little less rain, totaling 45 mm (1.8 in) over 9 days. Both months experience similar humidity levels, with January at 74% and March at 75%. For more details on March conditions, you can check Oceanside weather in March.

In January, the weather features cooler temperatures with a minimum of 8°C (47°F) and an average of 14°C (58°F), peaking at a maximum of 27°C (82°F). The month experiences more precipitation, about 54 mm (2.1 in) over 5 days, along with a relatively high humidity of 74%. In contrast, April showcases milder conditions with a minimum of 10°C (50°F) and an average of 16°C (61°F), reaching up to a maximum of 29°C (85°F). Additionally, April enjoys less rainfall, totaling 23 mm (0.9 in) across just 3 days, and slightly lower humidity at 70%. For more details, check out the Oceanside weather in April.

In January, the weather typically features temperatures ranging from a minimum of 8°C (47°F) to a maximum of 27°C (82°F), with an average of 14°C (58°F). The month experiences higher precipitation at 54 mm (2.1 in) over about 5 days, contributing to a humidity level of 74%. In contrast, May sees milder conditions with minimum temperatures around 12°C (53°F) and maximums peaking at 26°C (79°F), averaging 17°C (63°F). Precipitation is significantly lower in May, with only 14 mm (0.6 in) over 4 days, and humidity decreases slightly to 70%. For a detailed overview of May weather, you can check Oceanside weather in May.

In January, the weather is generally cooler, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 27°C (82°F). This month experiences about 54 mm (2.1 in) of precipitation over approximately 5 days, contributing to a humidity level of 74%. In contrast, June offers a warmer climate, with temperatures starting at a minimum of 14°C (57°F) and peaking at 29°C (85°F). Notably, June sees minimal rainfall, with just 3 mm (0.1 in) over 0 days, resulting in a slightly lower humidity of 72%. For a detailed overview of June's conditions, check out Oceanside weather in June.

In January, the weather tends to be milder with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 27°C (82°F), accompanied by an average temperature of 14°C (58°F). This month sees about 54 mm (2.1 in) of precipitation over five days, making it a comparatively wetter time of year with a humidity level of 74%.

Conversely, July offers a much warmer experience, featuring a minimum temperature of 17°C (62°F) and a peak at 35°C (94°F), resulting in an average temperature of 21°C (71°F). Remarkably, July experiences minimal precipitation, with only 3 mm (0.1 in) recorded over zero rainy days, and humidity remains slightly lower at 73%. For more detailed weather insights during this sunny month, check out Oceanside weather in July.

Comparing the weather between January and August reveals distinct differences in temperature and precipitation. In January, temperatures range from a minimum of 8°C (47°F) to a maximum of 27°C (82°F), with an average of 14°C (58°F). This month experiences about 54 mm (2.1 in) of precipitation spread over five days, resulting in a relatively high humidity of 74%. In contrast, August features milder conditions, with a minimum temperature of 17°C (64°F) and a maximum of 30°C (86°F), averaging 22°C (72°F). Notably, August is much drier, receiving only 1 mm (0.0 in) of rainfall over the course of the month and recorded no rainy days, accompanied by slightly lower humidity at 69%. For more details, you can check out Oceanside weather in August.

In January, the weather is comparatively cooler, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 27°C (82°F) and an average of 14°C (58°F). This month also sees about 54 mm (2.1 in) of precipitation over approximately 5 days, resulting in a relatively humid atmosphere with a humidity level of 74%. In contrast, September offers warmer conditions, with minimum temperatures of 15°C (60°F) and maximums reaching 34°C (93°F), averaging around 22°C (72°F). Notably, precipitation drops significantly to just 3 mm (0.1 in), occurring on only 1 day, and humidity decreases to 68%. The transition from January to September showcases a shift from cooler, wetter weather to a warmer, drier climate. For more detailed insights, you can check Oceanside weather in September.

In January, temperatures range from a minimum of 8°C (47°F) to a maximum of 27°C (82°F), averaging around 14°C (58°F), while October offers warmer conditions with a minimum of 11°C (52°F) and a maximum of 36°C (97°F), averaging 20°C (69°F). January sees more rainy days with approximately 54 mm (2.1 in) of precipitation over 5 days, compared to October's drier climate, which records only 10 mm (0.4 in) of precipitation over just 1 day. Additionally, January has a higher humidity level at 74%, making it feel more humid, whereas October enjoys a relatively lower humidity at 67%. For more detailed information, check Oceanside weather in October.

In January, temperatures range from a minimum of 8°C (47°F) to a maximum of 27°C (82°F), with an average of 14°C (58°F). The month sees more precipitation, totaling 54 mm (2.1 in) over about 5 days, and features higher humidity at 74%. In contrast, November experiences slightly warmer temperatures, with a minimum of 10°C (49°F) and a maximum of 29°C (84°F), averaging 18°C (64°F). Notably, November has less rainfall, with only 21 mm (0.8 in) over just 2 days, accompanied by lower humidity at 68%. For more detailed insights, check out Oceanside weather in November.

In comparing January and December weather, both months exhibit mild temperatures, with January averaging 14°C (58°F) and December slightly warmer at 15°C (59°F). The minimum temperatures are quite similar, with January registering 8°C (47°F) compared to December's 7°C (46°F). However, January enjoys a slightly higher maximum temperature of 27°C (82°F) versus December's 26°C (78°F). Precipitation is also notable; January experiences 54 mm (2.1 in) of rain over 5 days, while December sees a bit more with 63 mm (2.5 in) over the same number of days. Humidity levels are relatively close, with January at 74% and December at 71%. For more detailed insights, you can visit Oceanside weather in December.

Compare Oceanside's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Oceanside

In January, Oceanside experiences a mild coastal climate that sets it apart from the warmer summer months. With average temperatures around 14°C (58°F), the cool breezes are a refreshing change, while occasional highs reaching 27°C (82°F) offer a taste of warmth. Unlike the drier summer season, January brings about 54 mm of precipitation spread over five days, contributing to the lush coastal scenery. While humidity levels can be higher at 74%, the overall atmosphere feels invigorating, making it a unique time to enjoy the beauty of the coastline. For a deeper understanding of the annual weather patterns, check out the detailed insights at Oceanside Climate.