January Weather in Trelew, Argentina

Last updated: August 21, 2025

In Trelew, Argentina, January offers a striking contrast in weather, with maximum temperatures soaring up to 41°C (106°F), while the average hovers around a comfortable 22°C (71°F). Nights cool down to a refreshing minimum of 8°C (47°F), providing a pleasant reprieve from the daytime heat. With only 7 mm (0.3 in) of precipitation occurring across merely 1 day, the month is largely dry, contributing to a humidity level of 51% that enhances the warmth without becoming oppressive. This unique blend of conditions makes Trelew a captivating destination for those seeking a summer escape.

January Temperature in Trelew

In January, Trelew, Argentina, experiences warm and inviting temperatures, with a minimum of 8°C (47°F) and an average that rises to a pleasant 22°C (71°F). However, the city isn't shy about seeking the heat, showcasing a striking maximum of 41°C (106°F), making it one of the hottest months of the year. This trend of warmth continues into February, where the temperatures are nearly identical, while a gradual cooling begins in March. Here, the average dips slightly to 19°C (66°F), heralding the start of autumn. As the months progress into April and beyond, Trelew's weather showcases a more pronounced shift, with evenings taking a cooler turn and daytime highs decreasing significantly. This transformation leads into the colder winter months, transforming Trelew's climate from the scorching summer heat to the brisk chill of winter, creating an intriguing and dynamic seasonal journey.

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

The chart illustrates January temperature patterns in Trelew, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trelew, January typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec717066605246454954586469
Data source: Temperature data for Trelew 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 Trelew

In January, Trelew, Argentina experiences its driest month, with only 7 mm (0.3 in) of precipitation over just one day. This minimal rainfall sets the stage for a dry summer, where the temperatures rise and outdoor activities flourish. As the season progresses into February and March, precipitation begins to increase, culminating in a noticeable spike to 38 mm (1.5 in) in March, often bringing in the first signs of autumn. The trend continues, with monthly totals generally rising through the winter months, peaking in June at 45 mm (1.8 in). This pattern highlights the region's transitional climate, where short bursts of rain contrast with long dry spells, shaping both the landscape and the lifestyle of its inhabitants throughout the year.

January Precipitation Trends in Trelew

The chart displays monthly precipitation patterns in Trelew, 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. In Trelew, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec71138211645171714142516
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Trelew

In January, Trelew, Argentina, experiences an average humidity level of 51%, marking the beginning of a gradual increase that continues over the following months. This uptick is noticeable as humidity rises to 54% in February and 62% by March. As the seasons transition into the cooler months, the humidity steadily climbs further, reaching 71% in May and peaking at 78% during the winter months of July and August. Following this high point, humidity begins a slow decline, tapering off to 68% in September and dropping to 60% in October. By December, the humidity recedes to 48%, completing the yearly cycle with the driest conditions at year’s end. This pattern highlights Trelew's distinct seasonal rhythm, characterized by rising humidity from summer into winter, before easing back as the year closes.

January Average Humidity in Trelew

This chart illustrates the average monthly humidity levels in Trelew, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Trelew is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec51%54%63%65%71%77%78%78%68%60%54%48%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Trelew

In January, Trelew experiences its peak UV Index of 13, classified as extreme, which means sun seekers should limit their exposure to just 10 minutes to avoid burns. This intensity is mirrored in February, demonstrating that summer remains in full swing, but from March onward, the UV Index begins to taper off slightly to 8, moving into the very high category with a recommended burn time of 15 minutes. As autumn approaches, the index further decreases, settling at 5 in April and 3 in May, both categorized as moderate, allowing for longer sun exposure. By mid-year, from June to July, the index drops to a low rating of 2, suggesting much safer conditions for outdoor activities with a burn time of 45 minutes. However, as spring returns in September, the UV Index climbs back to 6 (high) before peaking again in November at 12 and each December rebounding to 13. This cyclical pattern highlights the importance of year-round sun safety, especially during those extreme months. For more detailed insights, check Trelew UV Index.

Maximum UV Index Levels in Trelew for January

The chart shows the monthly maximum UV Index (UVI) for Trelew 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. In January, the maximum UV index in Trelew typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1311853224681213
Data source: Trelew 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 Trelew

In Trelew, Argentina, January shines brightly with an impressive 331 hours of sunshine, setting the tone for a month filled with warmth and outdoor possibilities. As the calendar turns to February, the sun graces the region even more, offering 345 hours that invite locals and tourists alike to bask in the vibrant summer atmosphere. However, as the seasons transition into March, the sunny hours slightly dip to 330, hinting at the approach of autumn. The trend continues into April and May, where hours of sunshine decrease significantly to 277 and 241 respectively, signaling the shift to cooler days. Yet, this decline hits a low in June with only 205 hours before a gradual recovery begins in July, bouncing back to 217 hours. By late summer through autumn, sunshine hours steadily increase, peaking in December with a remarkable 409 hours, making it clear that Trelew's sunny climate adds a golden touch to every season, inviting exploration and adventure year-round.

Monthly Sunshine Duration in Trelew: January Highlighted

The January sunshine duration represents the total number of hours Trelew 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.
JanFebMarAprMayJunJulAugSepOctNovDec331h345h330h277h241h205h217h259h305h352h367h409h
Data source: Trelew January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Trelew During January

In Trelew, Argentina, January boasts a notable 73% chance of sunny weather, setting the stage for enjoyable summer days. This promising figure is slightly lower than February's 74%, indicating a peak in sunshine just as the year begins to warm. As the season progresses into March, the likelihood of sun dips to 65%, but still retains a solid average compared to the cooler months ahead. A distinct trend emerges as we move into the autumn, where April sees a drop to 53%, followed by May and June with 48% and 57%, respectively. The year gradually brightens again in spring, with increasing chances of sunshine returning in September (61%) and October (67%), culminating in a delightful December at 79%. Thus, January offers an ideal opportunity to bask in the abundant sunlight before the seasonal shift begins.

Percentage of Sunny Days in January in Trelew

The chart illustrates the percentage of sunny days in Trelew 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 Trelew experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec73%74%65%53%48%57%54%57%61%67%61%79%
Data source: Trelew January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Trelew in January

In Trelew, Argentina, January ushers in an abundance of daylight, basking the region in a generous 14 hours of sunlight, a prelude to summer's vibrant energy. As the month transitions to February, daylight begins to wane, settling at 13 hours. This gradual decrease continues into March, with 12 hours available for outdoor adventures. By April, daylight diminishes further to 10 hours, marking the start of a shift toward shorter days. The trend stabilizes as May, June, and July all hover around 9 hours, embodying the mid-winter chill. However, as August approaches, daylight begins to creep back, reaching 10 hours, and by September, it jumps to 11 hours. The cycle of daylight then picks up momentum once more, peaking again in December with an impressive 15 hours, showcasing the remarkable annual rhythm of light in this captivating southern locale.

Average Daylight Hours in Trelew for January

The chart illustrates the variation in daylight duration in Trelew throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 56m13h 45m12h 18m10h 50m9h 36m9h9h 20m10h 25m11h 49m13h 18m14h 37m15h 18m
Data source: Trelew daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Trelew

In January, Trelew, Argentina, experiences a gentle average wind speed of 5.1 m/s (11 mph), setting a breezy tone for the summer. This consistent airflow is mirrored in March, where winds return to the same speed, providing a sense of continuity as the season transitions to autumn. Interestingly, February steps it up with slightly stronger winds at 5.5 m/s (12 mph), hinting at a seasonal peak. Following this, a noticeable decline occurs as April ushers in calmer days at 4.0 m/s (9 mph), marking the beginning of a trend towards lighter winds that remains steady through the next few months. By October, the winds pick up again, culminating in November and December, where a resurgence of breezy conditions is felt at 5.6 m/s (12 mph) and 5.3 m/s (12 mph), respectively, emphasizing the cyclical nature of Trelew's climate. Overall, January's gentle winds are emblematic of a dynamic weather pattern that dances between calmness and brisk breeziness throughout the year.

Average January Wind Speed in Trelew

The chart displays monthly wind speed patterns in Trelew, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.1 m/s5.55.14.04.44.54.84.84.65.65.45.3
Data source: Trelew January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Trelew Compares to Other Months

Weather in Trelew varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Trelew, focusing on differences in temperature, rainfall, humidity, and UV levels.

In January, the weather features warmer temperatures with a minimum of 8°C (47°F) and an average of 22°C (71°F), reaching a maximum of 41°C (106°F). It's relatively dry, with only 7 mm (0.3 in) of precipitation occurring over just one day, and humidity averages around 51%. In comparison, February sees slightly cooler temperatures, with a minimum of 7°C (45°F), an average of 21°C (70°F), and a maximum of 40°C (104°F). Precipitation increases a bit to 11 mm (0.4 in), with rain on two days, and humidity also rises to 54%. For a more detailed look at February weather, you can visit Trelew weather in February.

In comparing January and March weather, January features warmer temperatures with a minimum of 8°C (47°F) and a maximum soaring up to 41°C (106°F), while March shows slightly cooler conditions, starting at a minimum of 5°C (41°F) and peaking at 36°C (96°F). January experiences minimal precipitation, just 7 mm (0.3 in) over a single day, resulting in a lower humidity level of 51%. In contrast, March brings a significant increase in rainfall with 38 mm (1.5 in) spread across five days, along with higher humidity at 62%. For more details on Trelew weather in March, you can visit Trelew weather in March.

January and April present strikingly different weather patterns. In January, temperatures soar, with an average of 22°C (71°F) and highs reaching up to 41°C (106°F), accompanied by low precipitation of just 7 mm (0.3 in) over a single day and relatively low humidity at 51%. In contrast, April experiences much cooler conditions, featuring a minimum temperature of -1°C (30°F) and an average of 15°C (60°F) with maximums of 33°C (92°F). This month also sees increased precipitation at 20 mm (0.8 in) over three days, alongside higher humidity levels at 65%. For a closer look at April's weather, check out Trelew weather in April.

January and May present contrasting weather conditions in terms of temperature and humidity. In January, temperatures range significantly from a minimum of 8°C (47°F) to a maximum of 41°C (106°F), with an average of 22°C (71°F), alongside low precipitation of just 7 mm (0.3 in) over the course of 1 day and a humidity level of 51%. Conversely, May experiences cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 28°C (82°F), averaging at 11°C (52°F). It also sees increased precipitation of 16 mm (0.6 in) across 4 days and higher humidity at 71%. For more detailed information, you can check Trelew weather in May.

In January, the weather is considerably warmer, with temperatures ranging from a minimum of 8°C (47°F) to a scorching maximum of 41°C (106°F) and an average of 22°C (71°F). This month boasts low precipitation, with only 7 mm (0.3 in) over just one rainy day and a humidity level of 51%. In contrast, June experiences much cooler conditions, featuring a minimum temperature of -4°C (24°F) and a maximum of 21°C (69°F), with an average temperature of only 8°C (46°F). The month sees significantly more precipitation, totaling 45 mm (1.8 in) across four days, accompanied by higher humidity at 77%. For more details, check out Trelew weather in June.

The weather in January and July reveals stark contrasts in temperatures and conditions. In January, temperatures range from a minimum of 8°C (47°F) to a scorching maximum of 41°C (106°F), creating a hot and dry atmosphere with only 7 mm (0.3 in) of precipitation over the month and relatively low humidity at 51%. In contrast, July experiences significantly cooler temperatures, with a minimum of -6°C (22°F) and a maximum of 20°C (69°F). This month sees increased humidity at 78% and a total of 17 mm (0.7 in) of precipitation over four days, making it much wetter than January. For more details, check out Trelew weather in July.

January and August offer stark contrasts in weather conditions. In January, temperatures soar to a maximum of 41°C (106°F) and maintain a warm average of 22°C (71°F), with humidity around 51% and only a minimal 7 mm (0.3 in) of precipitation over just one day. In contrast, August brings much cooler temperatures, peaking at 25°C (77°F), with an average of only 9°C (49°F) and a chilly minimum of -4°C (25°F). This month sees increased humidity at 78%, and precipitation is more frequent, totaling 17 mm (0.7 in) over four days. For more details, check Trelew weather in August.

In January, temperatures in Trelew soar with a minimum of 8°C (47°F) and can reach a scorching maximum of 41°C (106°F), while the average hovers around 22°C (71°F). The month sees minimal precipitation, only 7 mm (0.3 in) over a single day, and humidity levels are relatively moderate at 51%. In contrast, September offers a cooler climate, with temperatures ranging from a chilly 0°C (33°F) at night to a pleasant maximum of 31°C (88°F) during the day, averaging 12°C (54°F). This month experiences higher precipitation, totaling 14 mm (0.5 in) spread over three days, accompanied by increased humidity at 68%. For more details, visit Trelew weather in September.

January and October present stark contrasts in weather. January features much warmer temperatures, with a minimum of 8°C (47°F) and an average high of 41°C (106°F), while October sees cooler conditions, reaching a minimum of -1°C (30°F) and an average high of 32°C (89°F). Precipitation is notably lower in January, with only 7 mm (0.3 in) over just 1 day, compared to October’s 14 mm (0.6 in) spread across 3 days. Additionally, October’s humidity is slightly higher at 60%, compared to January’s 51%. For more specific details on October weather, you can check Trelew weather in October.

In comparison to January, November experiences slightly cooler temperatures, with a minimum of 5°C (40°F) and an average of 18°C (64°F), compared to January's 8°C (47°F) minimum and 22°C (71°F) average. The maximum temperatures in November peak at 37°C (98°F), which is lower than January's scorching high of 41°C (106°F). Additionally, November sees more precipitation, averaging 25 mm (1.0 in) over three days, while January is relatively dry, with only 7 mm (0.3 in) of rain on just one day. Humidity levels are somewhat similar, with November at 54% and January at 51%. For more detailed insights into November weather, you can check Trelew weather in November.

In January, the weather in Trelew tends to be warmer, with average temperatures reaching around 22°C (71°F) and maximums peaking at 41°C (106°F). In contrast, December experiences slightly cooler conditions, with average temperatures around 20°C (69°F) and maximums of 38°C (100°F). Additionally, January is drier, receiving only 7 mm (0.3 in) of precipitation over just one day, while December receives 16 mm (0.6 in) over two days. Humidity levels are relatively similar, with January at 51% and December at 48%. For more detailed information, you can check out Trelew weather in December.

Compare Trelew's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Trelew

January in Trelew brings a warm embrace with its sunshine and higher temperatures, standing out from the cooler months of the year. The average warmth encourages outdoor activities, while only a slight amount of precipitation—typically confined to a single day—means clear skies reign supreme. With humidity hovering around a comfortable 51%, the heat feels pleasant rather than stifling, making it an ideal time for visitors to explore the region's natural beauty. For more insights into seasonal weather patterns, check out Trelew Climate.