September Weather in La Paz, Mexico

Last updated: April 22, 2025

September in La Paz, Mexico, offers a tantalizing blend of warmth and occasional rain. With maximum temperatures reaching 33°C (92°F), the days can feel quite balmy, while the average temperature hovers comfortably at 21°C (71°F). Nightfall brings a refreshing respite, with lows of 10°C (51°F). The month is characterized by a moderate precipitation total of 63 mm (2.5 in) spread across 11 days, leading to a rather humid atmosphere, with levels around 79%. This combination of warmth and moisture creates vibrant landscapes, making September a unique time to experience La Paz's natural beauty.

September Temperature in La Paz

In La Paz, Mexico, September marks a gentle transition from the sweltering summer months, showcasing a more temperate climate that's perfect for outdoor exploration. With minimum temperatures around 10°C (51°F) and averaging 21°C (71°F), the days feel pleasantly warm without being overpowering. The maximums can still reach a balmy 33°C (92°F), making it ideal for beachgoers. As the month draws closer to autumn, the city enjoys a refreshing balance, as temperatures begin to hint at the cooler days ahead, contrasting sharply with the peak heat of earlier summer months. This combination of warmth and comfort entices visitors to experience the vibrant culture and stunning natural beauty of La Paz.

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.
JanFebMarAprMayJunJulAugSepOctNovDec495460677480757570655850
Data source: Temperature data for La Paz 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 La Paz

In September, La Paz experiences a significant uptick in precipitation, with 63 mm (2.5 in) of rainfall over 11 days. This marks a continuation of the wet season that typically peaks during the late summer months, following July's and August's heavy rains of 65 mm and 62 mm, respectively. The increase in rainfall during September signals the monsoon's influence, providing vital moisture before cooler months approach. As the year transitions into autumn, the number of rain days carries over from the previous months, contributing to the lingering humidity that characterizes this time of year. Consequently, September stands out as a key month in La Paz's annual climate pattern, connecting the peak of the rainy season to the gradual easing of precipitation through October and beyond.

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.
JanFebMarAprMayJunJulAugSepOctNovDec6343327656264251514
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in La Paz

In September, La Paz, Mexico, experiences a notable rise in humidity, peaking at 79% after the drier summer months. This is a significant increase from the more moderate levels seen in May and June, which hover around 49-50%. As the year transitions into fall, the air becomes more saturated, contributing to a prevailing sense of moisture that continues through the following months. Interestingly, humidity levels remain relatively high through the fall and winter, with November and December reaching 83% and 84%, respectively. This steady trend toward increased humidity illustrates how La Paz's climate shifts from relatively dry summer conditions to a more humid atmosphere as the year progresses, ultimately culminating in the cooler and wetter months ahead.

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.
JanFebMarAprMayJunJulAugSepOctNovDec78%71%60%52%49%50%65%70%79%77%83%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in La Paz

In September, La Paz experiences a UV Index of 12, marking it as an extreme exposure category with a burn time of just 10 minutes. This slight drop from August's peak of 13 indicates that while the summer sun begins to wane, caution is still paramount for those enjoying outdoor activities. The trend throughout the year shows that from January’s moderate levels, the UV Index consistently ascends through the spring and summer months, reaching its zenith in May. As autumn approaches, the numbers gradually diminish, yet September remains firmly entrenched in the extreme range. For those venturing into the sun, it’s wise to remain vigilant and protected. For more information, visit 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.
JanFebMarAprMayJunJulAugSepOctNovDec69111314131313121086
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

September brings a delightful 295 hours of sunshine to La Paz, Mexico, as the summer gradually shifts toward fall. While this month experiences a slight decrease in sunlight compared to the vibrant summer months of May through August, it still upholds a substantial amount of bright, sunny days. Interestingly, September's sunshine hours are lower than the peak summer, yet they remain significantly higher than the chillier months that follow, like October and November. This transitional month exemplifies the region's warm climate, allowing visitors to bask in the sun before the cooler months set in, making it an ideal time for outdoor adventures and leisurely strolls along the coast.

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.
JanFebMarAprMayJunJulAugSepOctNovDec221h260h304h326h365h351h349h336h295h291h263h265h
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

In La Paz, Mexico, September offers a 63% chance of sunny weather, marking a slight rebound from the preceding summer months, which see a gradual decline in sunshine with only 49% in August. This transition hints at a shift towards the more favorable conditions typical of autumn and winter. As the year progresses, the likelihood of sunshine steadily climbs, with October boasting an impressive 79% probability. Thus, September stands at a comfortable midpoint, providing visitors with a mix of sun-soaked days and manageable warmth, making it an appealing time to experience the beauty of La Paz.

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.
JanFebMarAprMayJunJulAugSepOctNovDec78%67%76%66%76%61%57%49%63%79%67%51%
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 La Paz, Mexico, September marks a gentle transition in daylight duration, averaging 12 hours of sunlight. This month gracefully follows the peak summer months of June through August, where daylight reached a steady 13 hours. As the year progresses, daylight begins to taper off, leading into the shorter days of October and November, both returning to 11 hours and 10 hours, respectively. The rhythm of daylight in La Paz plays a significant role in the seasonal changes, with longer days peaking during the summer before gradually receding toward the end of the year. As September unfolds, residents and visitors alike can enjoy a balanced blend of light that still favors outdoor adventures under the sun.

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.
JanFebMarAprMayJunJulAugSepOctNovDec10h 33m11h 11m12h12h 51m13h 33m13h 53m13h 42m13h 5m12h 16m11h 26m10h 43m10h 21m
Data source: La Paz daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in La Paz

In September, La Paz experiences a gentle average wind speed of 2.4 m/s (5 mph), marking a slight increase from the summer's calmer days. This subtle uptick contrasts with the more robust gusts typical of the spring months, where winds reached as high as 4.2 m/s (9 mph) in March. As summer winds begin to wane, September's breezes offer a delicate transition towards the slightly windier conditions of October. Overall, the data reveals a consistent seasonal pattern, where the region benefits from stronger winds in the earlier months, gradually shifting to a more tranquil atmosphere as the year progresses into autumn.

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.
JanFebMarAprMayJunJulAugSepOctNovDec2.93.64.23.83.53.42.32.22.4 m/s2.92.32.9
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.

In comparing the weather between September and January, we see a stark contrast in temperatures and precipitation. September tends to be much warmer, with average temperatures around 21°C (71°F) and a maximum reaching up to 33°C (92°F). The month experiences moderate rainfall, with about 63 mm (2.5 in) over 11 days, resulting in a humid atmosphere with 79% humidity. In contrast, January brings much colder temperatures, with average lows of -7°C (21°F) and a max of 27°C (80°F). It is significantly drier, receiving only 6 mm (0.3 in) of precipitation over just one day, while humidity remains relatively steady at 78%. For a more detailed look at the weather patterns, you can visit La Paz weather in January.

September and February present contrasting weather patterns. September typically boasts warmer temperatures, with a minimum of 10°C (51°F) and an average high of 33°C (92°F). In contrast, February experiences much colder conditions, with lows dipping to -5°C (23°F) and an average maximum of 30°C (87°F). While September sees more precipitation at 63 mm (2.5 in) over 11 days, February is relatively dry, receiving just 3 mm (0.1 in) over a single day. Humidity levels are also higher in September at 79%, compared to February's 71%. For a detailed look at conditions this month, you can check La Paz weather in February.

September and March exhibit notably different weather patterns. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 33°C (92°F), with an average of 21°C (71°F). The month sees significant precipitation, averaging 63 mm (2.5 in) over about 11 days and a humidity level of 79%. In contrast, March offers cooler temperatures, with a minimum of -2°C (28°F) and an average of 16°C (60°F), while also peaking at a maximum of 33°C (91°F). March experiences minimal rainfall, totaling just 4 mm (0.2 in) across only one day, and lower humidity at 60%. For more detailed insights into March weather, visit La Paz weather in March.

In comparing the weather patterns of September and April, notable differences emerge. September experiences a wider temperature range with a minimum of 10°C (51°F) and an average of 21°C (71°F), while April boasts a cooler minimum of 4°C (40°F) and a similar average of 20°C (68°F). Both months can reach a maximum of 33°C (92°F). However, September is significantly wetter, receiving 63 mm (2.5 in) of precipitation over 11 days, in stark contrast to April's minimal 3 mm (0.1 in) over just 1 day. This results in a much higher humidity level of 79% in September compared to 52% in April, making the latter month feel drier and more pleasant. For more details, you can refer to La Paz weather in April.

When comparing the weather in September and May, distinct differences emerge. September experiences a wide temperature range, with minimums around 10°C (51°F) and maximums reaching up to 33°C (92°F), accompanied by a notable average temperature of 21°C (71°F). This month also sees increased precipitation, with 63 mm (2.5 in) over about 11 days, leading to a higher humidity level of 79%. In contrast, May presents a warmer overall climate, with temperatures ranging from a minimum of 6°C (43°F) to a scorching maximum of 37°C (99°F). May is much drier, with only 3 mm (0.1 in) of precipitation falling over just 1 day, resulting in lower humidity at 49%. For more specifics on May weather, you can check out La Paz weather in May.

September and June present distinctly different weather patterns. In September, temperatures range from a cooler 10°C (51°F) at night to a warm 33°C (92°F) during the day, with an average of 21°C (71°F). The month experiences higher humidity at 79% and more frequent rainfall, with about 63 mm (2.5 in) of precipitation over 11 days. In contrast, June's weather is characterized by warmer temperatures, with a minimum of 12°C (54°F) and a maximum soaring to 38°C (101°F), averaging 26°C (80°F). Additionally, June sees significantly less precipitation, totaling 27 mm (1.1 in) over just 3 days, and lower humidity at around 50%. For more details on the June weather, you can visit La Paz weather in June.

In comparing the weather between September and July, it's evident that both months offer distinct climates. September has a broader temperature range, with minimums dipping to 10°C (51°F) and maximums reaching 33°C (92°F), whereas July typically has warmer temperatures, ranging from a minimum of 15°C (59°F) to a maximum of 37°C (98°F). Precipitation levels are similar in both months, with September receiving 63 mm (2.5 in) and July slightly more at 65 mm (2.6 in), yet both months experience about 11 rainy days. Additionally, September has higher humidity at 79%, compared to July's 65%. This contrast offers a glimpse into the transitional change of seasons. For more information on July weather, visit La Paz weather in July.

In comparison to August, September experiences a notable decline in average temperatures, with minimums dropping from 12°C (55°F) to 10°C (51°F) and average highs decreasing from 36°C (97°F) to 33°C (92°F). While August boasts a higher average temperature of 24°C (75°F), September offers a more moderate climate with an average of 21°C (71°F). Both months have similar precipitation levels, with September receiving 63 mm (2.5 in) and August slightly less at 62 mm (2.4 in), each experiencing rainfall on 11 days. Interestingly, September's humidity is higher at 79%, compared to August's 70%, making the air feel more humid during the transition into autumn. For a more detailed look at August weather, you can check out La Paz weather in August.

September and October present a notable shift in weather conditions. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 33°C (92°F), with an average of 21°C (71°F). This month experiences higher precipitation levels at 63 mm (2.5 in) over 11 days, along with a humidity of 79%. In contrast, October sees a cooler minimum temperature dropping to -2°C (28°F), while the average temperature is slightly lower at 19°C (66°F) and the maximum still reaching 32°C (89°F). Precipitation in October significantly decreases to just 25 mm (1.0 in) over 5 days, along with a modestly lower humidity of 77%. For a detailed look at what to expect, check out La Paz weather in October.

In September, the weather is characterized by warmer temperatures, with a minimum of 10°C (51°F) and an average high of 33°C (92°F). This month also experiences relatively high humidity at 79%, along with significant precipitation of 63 mm (2.5 in) over 11 days.

In contrast, November brings a notable drop in temperatures, ranging from a minimum of -6°C (21°F) to an average high of 29°C (85°F). The precipitation decreases dramatically to just 15 mm (0.6 in) over only 2 days, while humidity remains slightly higher at 83%.

For more detailed information on November weather, you can visit La Paz weather in November.

September and December present contrasting weather patterns. In September, temperatures range from a mild 10°C (51°F) at night to a warm 33°C (92°F) during the day, with an average of 21°C (71°F). This month also sees considerable precipitation, with about 63 mm (2.5 in) falling over approximately 11 days and humidity levels at 79%. In stark contrast, December experiences much cooler temperatures, with a minimum of -5°C (22°F) and a maximum of 27°C (81°F), averaging just 10°C (50°F). Precipitation drops significantly to 14 mm (0.5 in) across only 1 day, while humidity slightly increases to 84%. For more specifics on December weather, you can check La Paz weather in December.

Compare La Paz's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in La Paz

September in La Paz marks a unique transition in weather, characterized by a warm, average temperature of 21°C (71°F). Unlike the hotter summer months, the maximum temperature can reach 33°C (92°F), but the nights cool off significantly, dipping to a refreshing 10°C (51°F). This month also sees increased rainfall, with approximately 63 mm (2.5 in) spread over 11 days, contributing to a noticeable rise in humidity at 79%. The combination of warmth and moisture creates a vibrant, refreshing atmosphere, making September an intriguing time to experience La Paz. For more detailed insights into how September aligns with the wider climate trends, check out La Paz Climate.