September Weather in Necochea, Argentina

Last updated: August 21, 2025

In September, Necochea, Argentina experiences a notable transition toward spring, characterized by an average temperature of 11°C (52°F), with a maximum of 25°C (77°F) and a minimum dipping to 2°C (36°F). This month sees 57 mm (2.2 in) of precipitation over approximately 7 rainy days, contributing to a 79% humidity level that enhances the region's vibrant natural beauty. September's fluctuating weather encapsulates the essence of change, making it an intriguing time for residents and visitors alike to enjoy the awakening landscapes of this coastal gem.

September Temperature in Necochea

In September, temperatures in Necochea, Argentina transition from the chilly grips of winter into the warmth of spring. With minimums hovering around 2°C (36°F) and maximums peaking at a pleasant 25°C (77°F), this month showcases a refreshing change, as the average temperature inches up to 11°C (52°F). This gradual warming trend makes September an inviting time for outdoor activities, as the crisp air gives way to more temperate days. Compared to the preceding winter months, where temperatures often dip below freezing, September marks a significant shift, heralding the arrival of milder weather and blossoming nature, enticing both locals and visitors to embrace the outdoors.

September Weather in Necochea: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Necochea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Necochea, September 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).
JanFebMarAprMayJunJulAugSepOctNovDec706966625551485052566166
Data source: Temperature data for Necochea 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.

September Precipitation in Necochea

In September, Necochea experiences a moderate precipitation level, with 57 mm (2.2 in) of rain falling over approximately 7 days. This amount marks a slight increase compared to the drier August, which recorded only 40 mm (1.6 in). The weather remains generally unstable as the region transitions into the warmer spring months; however, this month still sees fewer rainfall events than some of the preceding months like April and November, which often bring heavier downpours. Overall, September serves as a pivotal month, indicating a gradual uptick in rainfall that sets the stage for the more hydrated days of spring ahead.

September Precipitation Trends in Necochea

The chart displays monthly precipitation patterns in Necochea, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Necochea, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec5182681045456674057657669
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Necochea

As September unfolds in Necochea, Argentina, humidity levels settle at a comfortable 79%, maintaining the trend established in previous months. This moderate humidity is characteristic of the late winter to early spring transition, where levels are consistently higher than during the summer months. Interestingly, while humidity peaked in May at 80%, it gradually stabilizes through the spring season, ensuring a refreshing atmosphere. This continuity signifies a gradual easing into the warmer months, with the air remaining pleasantly moist. Overall, September's humidity contributes to a vibrant and lush environment, paving the way for the blooming flora that the season promises.

September Average Humidity in Necochea

This chart illustrates the average monthly humidity levels in Necochea, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Necochea is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%76%76%79%80%79%74%75%79%76%74%70%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Necochea

As September rolls into Necochea, Argentina, the UV Index experiences a notable rise, settling at 7, which falls into the high exposure category, indicating a burn time of 25 minutes. This marks a transitional moment from the cooler months, where UV levels are generally moderate, back into the more intense sun prevalent later in the year. The shift suggests that while September still benefits from milder weather, sun protection becomes increasingly important as we near summer. With October approaching and the UV Index expected to spike to 10, it's crucial to stay vigilant. For further insights on UV levels throughout the year, be sure to check out the detailed information available at Necochea UV Index.

Maximum UV Index Levels in Necochea for September

The chart shows the monthly maximum UV Index (UVI) for Necochea in September, 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 September, the maximum UV index in Necochea typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141210643357101214
Data source: Necochea September 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.

September Sunshine in Necochea

As September arrives in Necochea, Argentina, the sun begins to reassert its presence, offering 266 hours of sunshine—a delightful blend of warmth and light that sets the stage for the vibrant spring season. This marks an upward trend from the cooler, cloudier months of winter, with sunshine hours steadily increasing from the 195 hours in June to 206 in July and 250 in August. September's sunshine not only signals a shift towards more enjoyable weather but also hints at the approaching abundance of brightness seen in the upcoming months. With October and November poised to deliver even more sunlight, residents and visitors can look forward to a season brimming with outdoor activity and joyful exploration under the radiant skies of Necochea.

Monthly Sunshine Duration in Necochea: September Highlighted

The September sunshine duration represents the total number of hours Necochea experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec310h316h310h250h231h195h206h250h266h315h336h384h
Data source: Necochea September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Necochea During September

In September, the likelihood of sunny weather in Necochea, Argentina stands at 48%, marking a slight dip as the month transitions from the winter chill of July and August. This month's chance of sunshine is lower than the early spring months of October (64%) and November (54%), but it remains fairly balanced compared to the preceding months of May (39%) and June (35%). As the seasons shift, September offers a glimpse of warmer days ahead, despite the clouds that may linger. With over half the year behind, the sun is preparing for a comeback, inviting locals and visitors alike to anticipate brighter days just around the corner.

Percentage of Sunny Days in September in Necochea

The chart illustrates the percentage of sunny days in Necochea throughout the year, with September 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 Necochea experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec57%54%52%61%39%36%50%55%48%64%54%59%
Data source: Necochea September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Necochea in September

In September, the daylight duration in Necochea, Argentina, begins a gradual ascent as the spring season unfolds, offering approximately 11 hours of sunlight. This marks a transition from the shorter days of winter, where daylight dipped to 9 hours in June and July. As the year progresses, we can see a distinct pattern: daylight hours steadily increase from September through November, peaking at 14 hours in December. This ebb and flow of sunlight not only signifies the changing seasons but also hints at the vibrant outdoor activities that begin to thrive as warmer days approach, inviting residents and visitors alike to savor the beauty of springtime in this charming coastal city.

Average Daylight Hours in Necochea for September

The chart illustrates the variation in daylight duration in Necochea throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 29m13h 30m12h 16m11h 1m10h9h 29m9h 46m10h 40m11h 51m13h 6m14h 13m14h 47m
Data source: Necochea daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Necochea

As September rolls in Necochea, Argentina, the coastal winds offer a gentle yet refreshing breeze, with an average speed of 5.0 m/s (11 mph). This marks a slight dip from the summer months, where winds peaked in July at 5.7 m/s (13 mph). The trend showcases a gradual decline from the mid-year gusts, settling into the milder breezes typical of early autumn. Compared to other months, September's windiness is consistent with the surrounding pre-winter months, where speeds hover around the 5.0 m/s mark, reflecting a serene transition as the region prepares for the cooler days ahead. This blend of stability and change makes September a uniquely calm yet invigorating time for both locals and visitors to enjoy the vibrant coastal atmosphere.

Average September Wind Speed in Necochea

The chart displays monthly wind speed patterns in Necochea, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.35.14.74.75.65.25.74.75.0 m/s4.95.34.7
Data source: Necochea September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Necochea Compares to Other Months

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

The weather in September presents a cooler and more temperate atmosphere, with average temperatures ranging from a chilly 2°C (36°F) at night to a pleasant 25°C (77°F) during the day. This month typically experiences around 57 mm (2.2 in) of rainfall spread over seven days, alongside a higher humidity of 79%. In contrast, January offers a much warmer climate, with nighttime lows of 10°C (50°F) and daytime highs soaring up to a scalding 39°C (102°F). The precipitation in January is slightly less at 51 mm (2.0 in), also over seven days, but the humidity is lower at 71%. For more insights on weather trends, you can check out Necochea weather in January.

In September, the weather begins to cool as temperatures range from a minimum of 2°C (36°F) to a maximum of 25°C (77°F), with an average of 11°C (52°F). The month experiences about 57 mm (2.2 in) of precipitation over 7 days, coupled with a humidity of 79%. In contrast, February boasts much warmer temperatures, with a minimum of 10°C (50°F), an average of 20°C (69°F), and a maximum of 32°C (91°F). This month sees increased precipitation at 82 mm (3.2 in) spread over 9 days and slightly lower humidity at 76%. For a more detailed look at February weather, check out Necochea weather in February.

When comparing the weather in September and March, a noticeable shift in temperatures and precipitation patterns is evident. September experiences cooler nights with a minimum temperature of 2°C (36°F) and an average of 11°C (52°F), while March enjoys much warmer temperatures, starting with a minimum of 9°C (48°F) and averaging 19°C (66°F). The maximum temperature in March can reach a comfortable 31°C (88°F), in stark contrast to September's upper limit of 25°C (77°F).

Additionally, March records slightly higher precipitation, totaling 68 mm (2.7 in) over about 9 days, compared to September's 57 mm (2.2 in) over 7 days. Humidity levels are fairly consistent, with September at 79% and March at 76%. Overall, March marks a transition into the warmer season, making it a more pleasant time for outdoor activities.

For more details on weather conditions specific to March, you can check Necochea weather in March.

When comparing the weather in September and April, notable differences emerge in temperature and precipitation. September experiences cooler temperatures, with a minimum of 2°C (36°F) and an average of 11°C (52°F), while April boasts milder conditions, starting at a minimum of 8°C (46°F) and averaging 16°C (62°F). Both months exhibit similar humidity levels at 79%, but April sees significantly more rainfall, receiving 104 mm (4.1 in) over 9 days compared to September's 57 mm (2.2 in) over 7 days. For detailed insights on April weather, you can explore Necochea weather in April.

September and May both exhibit mild temperatures, but with some notable differences. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 25°C (77°F), averaging around 11°C (52°F). Conversely, May sees slightly warmer conditions, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 24°C (75°F), averaging 13°C (55°F). While both months experience similar precipitation levels—57 mm (2.2 in) in September and 54 mm (2.1 in) in May—September has one less rainy day, with precipitation occurring on 7 days compared to 8 days in May. Additionally, humidity levels are comparable, with September at 79% and May at 80%. For more specific insights into May weather, you can check out Necochea weather in May.

When comparing the weather in September and June, we notice some interesting similarities and differences. September generally features a wider temperature range, with minimums at 2°C (36°F), averages around 11°C (52°F), and a maximum of 25°C (77°F). In contrast, June has a similar minimum of 2°C (35°F) but a lower average of 10°C (51°F) and a maximum of 20°C (68°F). Both months receive similar amounts of precipitation, with September at 57 mm (2.2 in) over 7 days and June at 56 mm (2.2 in) over 9 days, resulting in the same humidity level of 79%. For more detailed information on the weather in June, you can check out Necochea weather in June.

In comparing the weather of September and July, September tends to be warmer with average temperatures ranging from 11°C (52°F) to a maximum of 25°C (77°F), compared to July's range of 9°C (48°F) to a maximum of 19°C (66°F). While both months experience a fair amount of rainfall, September has slightly lesser precipitation at 57 mm (2.2 in) over 7 days, compared to July's 67 mm (2.6 in) spanning 10 days. Humidity levels are also a bit higher in September at 79%, whereas July witnesses a relative humidity of 74%. For more specific details about water conditions, you can check Necochea weather in July.

In comparing the weather of September and August, September exhibits slightly warmer temperatures, with a minimum of 2°C (36°F) and a maximum of 25°C (77°F), while August features temperatures ranging from a minimum of 0°C (33°F) to a maximum of 22°C (72°F). The average temperature in September is also higher, sitting at 11°C (52°F) compared to August's average of 10°C (50°F). Furthermore, September experiences increased precipitation of 57 mm (2.2 in) over 7 days, compared to August's 40 mm (1.6 in) over 6 days. Humidity levels are slightly higher in September at 79%, while August maintains a humidity of 75%. For more detailed information, you can check Necochea weather in August.

In comparing the weather of September and October, we see a gradual warming trend as temperatures rise from a minimum of 2°C (36°F) in September to 3°C (37°F) in October, with average temperatures increasing from 11°C (52°F) to 13°C (56°F). The maximum temperature sees a notable jump from 25°C (77°F) in September to a higher 30°C (86°F) in October. Precipitation increases slightly from 57 mm (2.2 in) in September to 65 mm (2.6 in), with both months experiencing rain over 7 days. Humidity remains relatively consistent, dropping slightly from 79% in September to 76% in October. For more details, check out Necochea weather in October.

In September, the weather features cooler temperatures, with a minimum of 2°C (36°F) and an average around 11°C (52°F), rising to a maximum of 25°C (77°F). The month experiences moderate precipitation, totaling 57 mm (2.2 in) over 7 days, with a humidity level of 79%. In contrast, November sees milder temperatures, with a minimum of 5°C (42°F), an average of 16°C (61°F), and a maximum of 29°C (84°F). Although November has slightly higher precipitation at 76 mm (3.0 in) over 9 days, it benefits from a lower humidity level of 74%. For more detailed insights, check out Necochea weather in November.

In September, temperatures range from a cool 2°C (36°F) to a comfortable maximum of 25°C (77°F), with an average of 11°C (52°F). The month experiences about 57 mm (2.2 in) of precipitation over seven days, accompanied by a relatively high humidity of 79%. In contrast, December showcases a warmer climate, featuring minimum temperatures of 6°C (43°F) and highs reaching 33°C (92°F), with an average temperature of 19°C (67°F). The precipitation increases slightly to 69 mm (2.7 in), spread over eight days, but the humidity drops to a more comfortable 70%. For more insights into December weather specifics, check out Necochea weather in December.

Compare Necochea's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Necochea

As September unfolds in Necochea, the weather begins to hint at the arrival of spring, presenting a refreshing contrast to the colder months. While the temperatures start to rise, creating a pleasant average of 11°C (52°F), they still fluctuate from cooler mornings to mild afternoons. With about 57 mm of precipitation over seven days, you might expect a sprinkle of rain to accompany those sunny spells. The humidity lingers at 79%, giving the air a crisp feel that’s perfect for enjoying the blossoming scenery. September is indeed a delightful transition month, distinct from the chill of winter but not quite at the warmth of summer. For a deeper dive into what to expect throughout the year, visit Necochea Climate.