September Weather in Oruro, Bolivia

Last updated: August 21, 2025

In September, Oruro, Bolivia, experiences a unique climate characterized by a maximum temperature of 25°C (77°F) and an average of 11°C (52°F), with nighttime lows dipping to a chilly -3°C (26°F). This month sees approximately 25 mm (1.0 in) of rainfall spread over about 6 days, contributing to a humidity level of 65%. As the dry season transitions, visitors can expect a cool yet vibrant atmosphere, making it an intriguing time to explore the rich culture and stunning landscapes of this highland city.

September Temperature in Oruro

In September, Oruro transitions into a more mild climate, gradually shedding the chill of the winter months. The temperatures range from a minimum of -3°C (26°F) to a pleasant maximum of 25°C (77°F), with an average of around 11°C (52°F). This month marks a noteworthy shift, as the days become warmer and more inviting, signaling the approach of spring. The slight increase in warmth reflects a trend of rising temperatures that continues into October, enhancing Oruro's charm as a vibrant destination. As the city begins to awaken from its cooler months, the September weather encourages outdoor exploration and offers a perfect backdrop for enjoying the rich cultural festivities that Bolivia is known for.

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

The chart illustrates September temperature patterns in Oruro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oruro, 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).
JanFebMarAprMayJunJulAugSepOctNovDec545453524945454752555755
Data source: Temperature data for Oruro 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.

September Precipitation in Oruro

September in Oruro, Bolivia, marks a transitional period in the area's precipitation patterns. With an average rainfall of 25 mm (1.0 in) spread over six days, it serves as a brief respite from the drier months of winter. Compared to the earlier months, September sees a notable increase in precipitation, hinting at the approaching rainy season. This uptick bridges the gap between the meager rainfall of June (just 5 mm) and the more substantial downpours expected in October (27 mm). As the month progresses, Oruro's landscapes begin to shift, as the moisture nurtures the dry earth, setting the stage for the vibrant growth that follows.

September Precipitation Trends in Oruro

The chart displays monthly precipitation patterns in Oruro, 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 Oruro, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec79119952413579252734110
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Oruro

In Oruro, Bolivia, September marks a noticeable shift in humidity, settling at 65%, up from the dry lows of 51% recorded in August. This moderate increase indicates the start of a transition as the dry season begins to wane. Notably, the humidity levels that soared to 90% from January through March begin their gradual decline, dipping to a yearly low in July at 56%. While September sees a rise, it remains significantly lower than the soaring levels of the first three months of the year, hinting at a comfortable balance as the region moves towards the wetter months of spring and early summer, where humidity once again climbs toward 81% by November.

September Average Humidity in Oruro

This chart illustrates the average monthly humidity levels in Oruro, 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 Oruro is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%90%89%87%72%57%51%65%69%81%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Oruro

In Oruro, Bolivia, September brings a UV Index of 16, signaling an extreme exposure category with a burn time of just 10 minutes. Following a trend established in the months prior, the UV Index remains consistently high in this region, with January and February peaking at 19. While it sees a slight dip in June and July, when the UV Index averages between 10 and 11, it quickly escalates again in August and September. This persistence of elevated UV levels underscores the importance of sun safety. For more insights and details on UV levels in Oruro, check Oruro UV Index.

Maximum UV Index Levels in Oruro for September

The chart shows the monthly maximum UV Index (UVI) for Oruro 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 Oruro typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec191917161310111416191919
Data source: Oruro 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 Oruro

September in Oruro, Bolivia, shines brightly with 335 hours of sunshine, contributing to a delightful month filled with warmth and light. This month's sunny disposition follows the trend established in the preceding months, particularly August, which logged an impressive 343 hours. As we transition from winter to spring, the sunlight gradually increases, peaking in October with 353 hours, suggesting a steady climb in brightness that many locals eagerly anticipate. This consistent rise in sunshine hours from mid-year highlights the region's move towards a vibrant and sun-kissed landscape, perfect for outdoor adventures and cultural festivities alike.

Monthly Sunshine Duration in Oruro: September Highlighted

The September sunshine duration represents the total number of hours Oruro 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.
JanFebMarAprMayJunJulAugSepOctNovDec285h305h331h323h328h312h331h343h335h353h351h337h
Data source: Oruro September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Oruro During September

In September, Oruro, Bolivia, enjoys a notable 60% chance of sunny weather, marking a significant transition towards more favorable outdoor conditions after the chill of winter. This statistically favorable outlook reflects a gradual increase in sunshine as the year progresses; following the high summer months of July and August, which boast an impressive 82% chance of sunlight. As fall begins, the likelihood of sunny days remains encouraging, but a slight dip from peak summer levels signals a shift towards the cooler and cloudier months ahead. Overall, September is a delightful time to soak in the sun while it lasts, as the final splashes of warmth start to fade into the rainy season.

Percentage of Sunny Days in September in Oruro

The chart illustrates the percentage of sunny days in Oruro 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 Oruro experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%24%26%49%56%64%82%82%60%55%18%10%
Data source: Oruro September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Oruro in September

In September, Oruro, Bolivia experiences a stable 11 hours of daylight, continuing the trend established in the previous months. As the year transitions from August into September, daylight duration plateaus at this consistent length, a hallmark of the region's early spring. This equilibrium persists until October, when days start to lengthen again, with daylight increasing to 12 hours. Overall, Oruro's daylight patterns reflect a gradual shift, with notable peak durations during the summer months of January and December, when daylight extends to a generous 13 hours. This cyclical rhythm highlights the region's unique seasonal changes, providing a balanced blend of light throughout the year.

Average Daylight Hours in Oruro for September

The chart illustrates the variation in daylight duration in Oruro throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 3m12h 39m12h 9m11h 39m11h 14m11h 3m11h 9m11h 30m11h 59m12h 30m12h 57m13h 10m
Data source: Oruro daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Oruro

As September arrives in Oruro, Bolivia, the winds begin to pick up, with an average speed of 3.0 m/s (7 mph), marking a noticeable increase from the fluctuating breezes of the previous months. This gentle yet invigorating gustiness is a subtle reminder of the transition into spring, as August also hinted at this upward trend with a wind speed of 2.9 m/s (7 mph). Notably, the spring months show a gradual rise in wind activity, juxtaposed against the calmer winds of winter. With this slight uptick, locals might feel the refreshing embrace of September winds, setting the stage for the vibrancy of the upcoming season.

Average September Wind Speed in Oruro

The chart displays monthly wind speed patterns in Oruro, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.82.72.52.62.52.62.52.93.0 m/s3.02.82.4
Data source: Oruro September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Oruro Compares to Other Months

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

September and January present distinct weather contrasts. In September, temperatures can range from a chilly -3°C (26°F) at their lowest to a comfortable 25°C (77°F) at peak, with an average of 11°C (52°F). This month sees around 25 mm (1.0 in) of precipitation over about six days, accompanied by a humidity level of 65%. In contrast, January experiences milder temperatures that hover between 3°C (39°F) and 23°C (74°F), with an average of 12°C (54°F). However, it is also significantly wetter, with precipitation reaching 79 mm (3.1 in) across 17 days and higher humidity levels of 90%. For more detailed information, you can check Oruro weather in January.

September and February offer two distinct weather experiences. In September, temperatures range from a chilly min of -3°C (26°F) to a pleasant max of 25°C (77°F), with an average of 11°C (52°F). This month sees relatively low precipitation at 25 mm (1.0 in) over approximately 6 days, and humidity levels sit at 65%. In contrast, February experiences warmer temperatures, with a minimum of 3°C (38°F) and a maximum of 23°C (74°F), averaging 12°C (54°F). However, it is also much wetter, with precipitation reaching 119 mm (4.7 in) across 20 days and humidity rising to a high 90%. For further details, check Oruro weather in February.

September and March present notably different weather patterns. In September, temperatures range from a chilly minimum of -3°C (26°F) to a pleasant maximum of 25°C (77°F), with an average temperature of 11°C (52°F). The month sees relatively low precipitation at 25 mm (1.0 in) over just 6 days, and humidity levels hover around 65%. In contrast, March experiences milder temperatures, with minimums of 2°C (35°F) and maximums of 22°C (72°F), averaging 12°C (53°F). However, it is significantly wetter, with 95 mm (3.7 in) of rain spread across 21 days and higher humidity at 90%. For a more detailed look at March weather in Oruro, visit Oruro weather in March.

When comparing September and April, both months feature similar average temperatures, with September ranging from a minimum of -3°C (26°F) to a maximum of 25°C (77°F), while April sees temperatures between -1°C (31°F) and 23°C (74°F). However, April tends to have a higher humidity level at 89%, compared to September's 65%, which can make the air feel more oppressive. Precipitation levels are also quite comparable, with both months receiving around 25-24 mm (1.0 in) of rain over six days. For more detailed information, you can check Oruro weather in April.

In comparing the weather between September and May, we observe notable differences in temperatures and humidity levels. September experiences slightly warmer conditions, with average temperatures around 11°C (52°F) and a maximum of 25°C (77°F), while May has a cooler average of 9°C (49°F) and a maximum of 23°C (73°F). Precipitation is more frequent in September, occurring on about 6 days with a total of 25 mm (1.0 in), compared to May, which sees less rain—only 13 mm (0.5 in) over 3 days. Additionally, May tends to have higher humidity levels at 87%, while September's humidity is lower at 65%. For more details on the climate during May, you can visit Oruro weather in May.

September typically sees milder temperatures compared to June, with an average of 11°C (52°F) compared to June's average of 7°C (45°F). The maximum temperature in September can reach up to 25°C (77°F), while June's maximum is slightly lower at 21°C (70°F). Additionally, September experiences more precipitation, averaging 25 mm (1.0 in) over six days, in contrast to June's minimal 5 mm (0.2 in) over just one day. This makes September feel slightly less humid at 65%, compared to June's humidity level of 72%. For more details on June weather, you can visit Oruro weather in June.

When comparing the weather in September to that of July, September tends to be notably warmer, with average temperatures reaching 11°C (52°F) compared to July's average of 7°C (45°F). The maximum temperature in September can climb to 25°C (77°F), while July sees a maximum of only 21°C (70°F). Additionally, September experiences more precipitation, totaling 25 mm (1.0 in) over six days, in contrast to July's low 7 mm (0.3 in) over just one day. However, humidity levels are slightly higher in September at 65%, compared to 56% in July. For further insights into July's weather, you can check Oruro weather in July.

September generally experiences milder temperatures compared to August, with minimums reaching -3°C (26°F) and maximums swelling to 25°C (77°F), while August's range sees minimums of -9°C (16°F) and maximums of 22°C (72°F). The average temperature in September is notably higher at 11°C (52°F) compared to August's average of 8°C (47°F). Additionally, September has a slightly higher humidity level at 65%, while August maintains a more comfortable 51%. In terms of precipitation, September receives more rainfall, totaling 25 mm (1.0 in) over six days, whereas August is much drier, with only 9 mm (0.4 in) across just two days. For more details on August weather specifics, you can visit Oruro weather in August.

In September, the weather displays a notable range, with temperatures varying from a minimum of -3°C (26°F) to a maximum of 25°C (77°F) and an average of 11°C (52°F). The month experiences relatively light precipitation, totaling 25 mm (1.0 in) over six days and a humidity level of 65%. In contrast, October sees a slight increase in average temperature to 13°C (55°F) and maintains a similar temperature range, with a maximum of 26°C (78°F). Precipitation increases slightly to 27 mm (1.1 in) over seven days, and humidity rises to 69%. For more detailed insights, you can check Oruro weather in October.

September and November present distinct weather characteristics. In September, temperatures range from a chilly -3°C (26°F) at night to a pleasant high of 25°C (77°F) during the day, with an average of 11°C (52°F). This month sees relatively low precipitation, accumulating only 25 mm (1.0 in) over about 6 days, and the humidity levels hover around 65%. In contrast, November experiences milder nights with temperatures only dropping to a minimum of 2°C (35°F), while daytime highs remain steady at 25°C (78°F) and an average temperature of 14°C (58°F). The month also sees an increase in precipitation, totaling 34 mm (1.3 in) over 8 days, and a rise in humidity to 81%. For more detailed insights, check out Oruro weather in November.

In September, the weather exhibits a broader temperature range, with minimums dropping to -3°C (26°F) and maximums reaching up to 25°C (77°F), averaging around 11°C (52°F). With only 25 mm (1.0 in) of precipitation spread over 6 days, the month presents a relatively dry atmosphere, complemented by a humidity level of 65%. In contrast, December sees milder temperatures, with minimums starting at 2°C (37°F) and maximums peaking at 26°C (79°F), averaging 13°C (56°F). However, December is considerably wetter, receiving 110 mm (4.3 in) of rain across 19 days and a higher humidity of 85%. For more insights into the December climate, you can visit Oruro weather in December.

Compare Oruro's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Oruro

September in Oruro brings a refreshing transition as the winter chill begins to fade. With a noticeable increase in temperatures, the air feels milder, offering an inviting contrast to the colder months. The average temperature, hovering around 11°C, hints at the approaching warmth, while maximum highs can reach a pleasant 25°C, creating ideal conditions for outdoor activities. However, occasional precipitation and a humidity level of 65% remind residents that September can still produce its share of chilly, damp days. Compared to the more frigid winter months, September offers a blend of comfortable days and cooler nights, making it a unique month to experience the evolving Oruro climate. For more insights on this, visit Oruro Climate.