September Weather in La Paz, Mexico

Last updated: April 22, 2025

September in La Paz, Mexico offers a warm tropical experience, with maximum temperatures reaching 30°C (86°F) and an average of 22°C (71°F). The month is marked by high humidity levels at around 80%, creating a lush atmosphere despite the frequent showers. With a total precipitation of 370 mm (14.6 in) spread across 29 days, visitors can expect a mix of sunshine and rain, making it an ideal time for those who appreciate vibrant landscapes and mild temperatures. Embrace the beauty of September in La Paz, where nature's charm is enhanced by the seasonal rains.

September Temperature in La Paz

In September, La Paz experiences mild temperatures, making it an inviting time for visitors. The month starts with a minimum of 16°C (60°F), a comfortable average of 22°C (71°F), and peaks at around 30°C (86°F). This blend of warmth and cool breezes offers a delightful retreat, especially as summer transitions to autumn. Notably, September maintains the trend seen in previous months of comfortable daytime highs, while nights remain refreshingly cool, reminiscent of the pleasant weather experienced throughout the summer. As the year progresses into October, temperatures begin to gradually decline, yet September stands out as a perfect representation of La Paz’s inviting climate.

September Weather in La Paz: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in La Paz, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec687072737371727171706968
Data source: Temperature data for La Paz 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 La Paz

September in La Paz, Mexico, marks a significant peak in precipitation, with an impressive 370 mm (14.6 in) of rain recorded over 29 days. This surge follows August's substantial rainfall and underscores the region's transition into its wettest months. The increase in precipitation can be seen as a climatic crescendo, highlighting the summer monsoon's influence as it rounds off with nearly comparable amounts to June, which boasts 384 mm in the same number of rainy days. With this pattern, it's clear that September serves as a bridge, leading the lush landscape toward the drier months ahead, while still embracing the seasonal bounty of moisture before autumn settles in.

September Precipitation Trends in La Paz

The chart displays monthly precipitation patterns in La Paz, 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.
JanFebMarAprMayJunJulAugSepOctNovDec9714542283842143253702573911
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in La Paz

September in La Paz, Mexico, ushers in a striking moment in the annual humidity cycle, registering at 80%. This month sits comfortably between the peak humidity of 82% in August and the slightly lower levels of 81% in October, creating a subtle transition into the fall season. The trend shows a general increase in humidity from the drier winter months, starting at 70% in January and steadily climbing, peaking during the summer. This rise peaks in the July and August months, indicating a marked presence of moisture in the air as the region approaches the end of summer. Overall, September maintains a high level of humidity, embodying the lingering warmth of the summer while slowly embracing the cooler autumn months.

September Average Humidity in La Paz

This chart illustrates the average monthly humidity levels in La Paz, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec70%68%64%67%74%78%82%82%80%81%80%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in La Paz

As September rolls into La Paz, Mexico, residents and visitors can expect a UV Index of 14, keeping it firmly in the extreme exposure category. This mirrors the trend set by the preceding summer months, where high UV levels were consistently observed. With a burn time of just 10 minutes, it’s crucial to prioritize sun safety, especially as the days begin to shorten yet the intensity of UV radiation remains strikingly high. The continued vigilance in sun protection is vital during this month, aligning with the pattern of extreme conditions seen throughout the year. For more detailed insights, check out the La Paz UV Index.

Maximum UV Index Levels in La Paz for September

The chart shows the monthly maximum UV Index (UVI) for La Paz 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.
JanFebMarAprMayJunJulAugSepOctNovDec11131415141415141413109
Data source: La Paz 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 La Paz

As summer transitions into fall, September shines brightly in La Paz, Mexico, offering a delightful 288 hours of sunshine. This marks a slight dip from the summer peak of 324 hours in July, yet it still showcases a robust presence of sunlight, aligning closely with the vibrant August skies. The trend reveals a gradual decrease in daylight hours as the year progresses, but September's sunny disposition remains a key highlight of the month. With its warm weather and sparkling coastline, this time of year invites both relaxation and adventure, making it a perfect escape for sun-seekers who want to bask in the beauty of this coastal paradise before the days become shorter.

Monthly Sunshine Duration in La Paz: September Highlighted

The September sunshine duration represents the total number of hours La Paz 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.
JanFebMarAprMayJunJulAugSepOctNovDec253h285h323h316h317h278h324h305h288h290h311h317h
Data source: La Paz September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in La Paz During September

September in La Paz, Mexico, marks a significant dip in the likelihood of sunny weather, with only a 14% chance of sunshine. This trend is part of a broader pattern observed from late spring through summer, where the probabilities significantly decline—hitting a low of just 11% in June and 13% in August. As the year progresses into the fall months, chances of sun begin to recover, jumping to 32% in October. Therefore, if you're planning a visit in September, be prepared for some cloud cover and humidity, as the sunny days are noticeably scarce during this time.

Percentage of Sunny Days in September in La Paz

The chart illustrates the percentage of sunny days in La Paz 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 La Paz experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec57%78%70%48%24%11%18%13%14%32%59%76%
Data source: La Paz September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in La Paz in September

In September, daylight in La Paz, Mexico, lasts for approximately 12 hours, maintaining a consistent trend established in the preceding months. As the year progresses from the sun-drenched days of June, which boasts 13 hours of daylight, there is a gradual decline, but September’s daylight remains robust. This pattern reflects a balance in seasonal shifts, with October heralding a slight reduction to 11 hours. Notably, the continuity of 12 hours throughout the summer months and into early autumn creates an inviting atmosphere for outdoor activities and exploration, making September a delightful time to enjoy the cultural and natural splendors of La Paz. As the seasons transition, the patterns of daylight serve as a reminder of the rhythm of nature in this vibrant region.

Average Daylight Hours in La Paz for September

The chart illustrates the variation in daylight duration in La Paz throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 17m11h 37m12h 2m12h 29m12h 51m13h 1m12h 56m12h 36m12h 11m11h 45m11h 22m11h 11m
Data source: La Paz daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in La Paz

As September arrives in La Paz, Mexico, the average wind speed settles at a gentle 1.1 m/s (2 mph), marking a slight decline from the summer months. This seasonal dip follows the pattern of diminishing breezes that typically characterize the region during the latter half of the year. Interestingly, the winds have been relatively calm since June, with several months recording similar low speeds. However, this subtle tranquility gives way to a more invigorating wind in November, which can reach an average of 1.9 m/s (4 mph). Overall, September embodies a transition period, where the warm summer days begin to soften, inviting a refreshing yet gentle air as La Paz prepares for the changing seasons.

Average September Wind Speed in La Paz

The chart displays monthly wind speed patterns in La Paz, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.71.71.81.71.21.01.21.01.1 m/s1.11.91.5
Data source: La Paz September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in La Paz Compares to Other Months

The weather in La Paz changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in La Paz and find detailed weather information for every month.

September weather is characterized by higher temperatures, with a minimum of 16°C (60°F) and an average of 22°C (71°F), peaking at a warm 30°C (86°F). However, it is also the wettest month, receiving an impressive 370 mm (14.6 in) of rainfall over 29 days, coupled with high humidity at 80%. In contrast, January presents notably cooler conditions, with a minimum temperature of 9°C (48°F) and an average of 20°C (68°F), while still reaching up to 30°C (87°F) on warmer days. Rainfall is drastically reduced to just 9 mm (0.3 in) over only 2 days, and humidity is lower at 70%. For more details, you can check La Paz weather in January.

September and February present contrasting weather patterns. In September, temperatures range from a minimum of 16°C (60°F) to a maximum of 30°C (86°F), with an average of 22°C (71°F). This month is particularly wet, experiencing 370 mm (14.6 in) of rainfall over 29 days, along with high humidity levels at 80%. In sharp contrast, February boasts milder weather, with temperatures ranging from a low of 10°C (50°F) to a high of 32°C (90°F), averaging 21°C (70°F). Precipitation is minimal during this month, totaling just 7 mm (0.3 in) and occurring only on 1 day, while humidity is lower at 68%. For a closer look at February weather, check out La Paz weather in February.

When comparing the weather in September to that of March, notable differences emerge. September, with average temperatures ranging from a mild 16°C (60°F) at night to a warm 30°C (86°F) during the day, experiences significantly more precipitation, totaling 370 mm (14.6 in) spread across 29 days, and high humidity levels at 80%. In contrast, March presents a slightly cooler atmosphere, with minimum temperatures of 13°C (55°F) and maximums reaching up to 33°C (91°F), but it enjoys much drier conditions with only 14 mm (0.6 in) of rain over just 3 days and lower humidity at 64%. For more insights into March weather, you can visit La Paz weather in March.

September and April present quite different weather patterns. In September, temperatures range from a minimum of 16°C (60°F) to a maximum of 30°C (86°F), with an average of 22°C (71°F). This month is characterized by high humidity levels at 80% and considerable precipitation, totaling 370 mm (14.6 in) across 29 days. In contrast, April offers slightly warmer average temperatures, with a minimum of 13°C (56°F), an average of 23°C (74°F), and a maximum reaching 34°C (94°F). April is significantly drier, receiving only 54 mm (2.1 in) of rain over just 12 days, along with lower humidity at 67%. For more specific insights about weather conditions in April, visit La Paz weather in April.

When comparing the weather in September and May, we notice several distinct differences. September features a similar minimum temperature of 16°C (60°F), but averages a bit lower at 22°C (71°F), with a maximum reaching 30°C (86°F). The month also sees significantly higher precipitation, with 370 mm (14.6 in) spread over 29 days and elevated humidity levels at 80%. In contrast, May enjoys slightly warmer temperatures, with a minimum of 16°C (61°F), an average of 23°C (73°F), and a maximum of 32°C (91°F). With only 228 mm (9.0 in) of precipitation over the same number of days, May experiences lower humidity at 74%, making it generally drier and warmer than September. For more details, you can refer to La Paz weather in May.

In comparing the weather of September and June, both months exhibit similar temperature ranges, with minimums around 16°C (60°F), averages near 22°C (71°F), and maximums slightly varying from 30°C (86°F) in September to 31°C (87°F) in June. However, June experiences slightly less precipitation, at 384 mm (15.1 in) compared to September's 370 mm (14.6 in), despite both months having 29 days of measurable rainfall. Humidity levels are also comparable, with September at 80% and June at 78%, making both months feel quite damp, but June tends to be marginally less humid. For further details about the weather specifics in June, you can visit La Paz weather in June.

In comparing the weather of September and July, we find both months share similar average temperatures, with September ranging from a minimum of 16°C (60°F) to a maximum of 30°C (86°F), while July has a slightly cooler minimum of 15°C (59°F) and a maximum of 31°C (87°F). However, September experiences significantly higher precipitation, totaling 370 mm (14.6 in) over 29 days, compared to July's 214 mm (8.4 in) across 26 days. The humidity levels are quite comparable, with September at 80% and July at 81%, creating a consistently muggy atmosphere throughout both months. To learn more about July weather specifics, visit La Paz weather in July.

In comparing the weather of September to August, we find that both months enjoy a similar average temperature of around 22°C (72°F), with September occasionally reaching a maximum of 30°C (86°F) and August peaking slightly higher at 30°C (87°F). Notably, September experiences a higher total precipitation of 370 mm (14.6 in) over 29 days, compared to August's 325 mm (12.8 in) over 28 days, suggesting that September is generally wetter. Additionally, the humidity levels in September are slightly lower at 80%, while August remains a bit more humid at 82%. For more detailed insights on August's weather, you can visit La Paz weather in August.

September tends to be slightly warmer than October, with average temperatures reaching 22°C (71°F) compared to 21°C (71°F) in October. However, both months share similar maximum temperatures of 30°C (86°F) and 30°C (85°F), respectively. September experiences significantly higher rainfall, totaling 370 mm (14.6 in) over 29 days, while October sees a reduction in precipitation to 257 mm (10.1 in) across 25 days. Humidity levels are comparable, with September at 80% and October just a notch higher at 81%. For more detailed insights about October weather, you can visit La Paz weather in October.

September and November display notable differences in weather patterns. September boasts a warmer temperature range, with averages of 22°C (71°F) and max temperatures reaching up to 30°C (86°F), while November experiences slightly cooler conditions with a minimum of 12°C (53°F) and an average of 21°C (69°F). Precipitation levels in September are significantly higher, totaling 370 mm (14.6 in) over 29 rainy days, compared to November's modest 39 mm (1.5 in) over just 9 days. Despite a similar humidity level of 80% in both months, November provides a much drier experience overall. For more details, visit La Paz weather in November.

In September, the weather is significantly warmer and wetter, with temperatures ranging from a low of 16°C (60°F) to a high of 30°C (86°F) and an average of 22°C (71°F). The month is characterized by heavy rainfall, accumulating 370 mm (14.6 in) over 29 days, and a humidity level of 80%. Conversely, December offers a milder climate, with temperatures dipping to a minimum of 10°C (50°F) and averaging at 20°C (68°F), while still peaking at 30°C (86°F). Precipitation drops dramatically to just 11 mm (0.4 in) over only 2 days, accompanied by lower humidity at 75%. For a more detailed look at December weather in La Paz, visit La Paz weather in December.

Compare La Paz's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in La Paz

As September unfolds in La Paz, the weather showcases a distinct character compared to other months. The temperatures tend to rise, with warmth peaking at an inviting 30°C during the day, while the evenings cool down to a comfortable 16°C. However, this month also brings a significant increase in humidity and frequent rainfall, contributing to an impressive 370 mm of precipitation over approximately 29 days. Such conditions create a lush atmosphere, setting September apart as a time of transformation in La Paz’s climate. For those eager to explore how this month compares within the broader context of the year, visit La Paz Climate.