September Weather in Loreto, Mexico

Last updated: April 22, 2025

Experience the captivating September weather in Loreto, Mexico, where temperatures reach a maximum of 33°C (91°F), with an average of 29°C (84°F) and a comfortable minimum of 24°C (75°F). This month, expect approximately 46 mm (1.8 in) of rainfall spread over just 2 days, resulting in a lush, vibrant landscape. The humidity levels hover around 77%, enhancing the sultry atmosphere that can make evenings particularly enchanting. Whether exploring its stunning coastline or relaxing in the warm breeze, September offers a delightful slice of Loreto's charm.

September Temperature in Loreto

In September, Loreto, Mexico, experiences a delightful transition into the warmer months, with temperatures reflecting a comforting balance between summer's peak and the approaching autumn. The month sees a minimum temperature of 24°C (75°F), making evenings warm and inviting, while the average temperature reaches 29°C (84°F), ensuring plenty of sun-soaked days. With a maximum of 33°C (91°F), it's easy to embrace the vibrant outdoor lifestyle Loreto has to offer. This slight rise in temperatures from August continues the trend of warmth, providing a perfect backdrop for exploring the stunning coastline and enjoying the lush landscapes before the cooler months set in. Overall, September serves as a paradise of warmth and vibrancy, inviting visitors to indulge in the beauty of this coastal gem.

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

The chart illustrates September temperature patterns in Loreto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec656467717480838584817568
Data source: Temperature data for Loreto 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 Loreto

September marks a notable shift in precipitation for Loreto, Mexico, with 46 mm (1.8 in) of rainfall over just two days—the highest monthly total of the year. This increase showcases a significant transition from the dry months preceding it, where little to no rain fell. In fact, while the summer months like June and August received only modest amounts, September's downpour sets the stage for a lush and vibrant autumn. Following September, precipitation tapers off again, making it a crucial month for both the environment and local agriculture, as it embraces a brief yet impactful season of wetness amidst an otherwise arid climate.

September Precipitation Trends in Loreto

The chart displays monthly precipitation patterns in Loreto, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8440062124623186
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Loreto

In September, Loreto, Mexico, experiences a noticeable uptick in humidity, peaking at 77%. This marks a slight increase from August's 76%, indicating that the summer heat is still lingering, accompanied by elevated moisture levels. As the year progresses, we observe an overall trend where humidity begins to rise in the late summer months, peaking in September before gradually tapering off into the drier autumn months of October and November. Throughout the year, the humidity varies quite significantly, ranging from a low of 57% in April to a high of 77% in September, revealing how the coastal climate influences the comfort levels in this beautiful Mexican destination.

September Average Humidity in Loreto

This chart illustrates the average monthly humidity levels in Loreto, 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%66%61%57%59%59%68%76%77%76%73%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Loreto

In September, Loreto, Mexico, experiences a consistently high UV Index of 12, classified as extreme. This trend follows an intense summer where outdoor enthusiasts faced similar UV levels, necessitating caution for sun exposure to avoid quick burns in just 10 minutes. As the summer months transition into fall, the UV Index remains elevated, reminding residents and visitors alike to stay vigilant with sun protection. As daylight diminishes and temperatures begin to cool, it’s crucial to be mindful of these conditions, ensuring safe, enjoyable outdoor activities. For more detailed information about UV exposure throughout the year, visit Loreto UV Index.

Maximum UV Index Levels in Loreto for September

The chart shows the monthly maximum UV Index (UVI) for Loreto 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.
JanFebMarAprMayJunJulAugSepOctNovDec6810121212121212976
Data source: Loreto 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 Loreto

September in Loreto, Mexico, boasts a delightful 309 hours of sunshine, marking a graceful transition into the cooler months. This month stands out as a continuation of the summer's abundant sunlight, maintaining a vibrant atmosphere for outdoor adventures. The trend over the year reveals a steady ascent in sunlight hours from January's 221 to a peak of 361 in May. While there's a slight decrease following summer, September's figures still reflect a warm embrace of sunlight before autumn settles in. This beautiful corner of Mexico remains a sun-lover's paradise, inviting visitors to relish its golden hues and picturesque landscapes.

Monthly Sunshine Duration in Loreto: September Highlighted

The September sunshine duration represents the total number of hours Loreto 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.
JanFebMarAprMayJunJulAugSepOctNovDec221h256h301h326h361h355h354h339h309h304h266h266h
Data source: Loreto September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Loreto During September

As September rolls into Loreto, Mexico, the likelihood of sunny days remains promising, boasting a 73% chance of sunshine. This slight increase follows the summer months, where June leads with an impressive 80%. The transition into autumn sees a gradual shift in sunny probabilities, reminiscent of May's warm embrace at 79%. September's weather is typically characterized by lingering warmth, making it an ideal time for outdoor adventures. With October peeking just around the corner, a 88% chance of sun awaits, hinting at a bright and joyous end to the summer season. Thus, visitors can expect a delightful balance of sunny skies and pleasant temperatures throughout the month.

Percentage of Sunny Days in September in Loreto

The chart illustrates the percentage of sunny days in Loreto 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 Loreto experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec72%61%65%71%79%80%62%64%73%88%70%53%
Data source: Loreto September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Loreto in September

As September sets in, Loreto, Mexico enjoys a balanced 12 hours of daylight, marking the transition from summer's long days to the shorter ones of autumn. This month showcases a slight dip from the peak summer months of June and July, where daylight stretches to 13 hours. The gradual decrease continues into October, signaling the onset of the cooler months ahead. Overall, September maintains a comfortable blend of light, allowing locals and visitors alike to bask in the mild, sun-kissed days while preparing for the seasonal shift.

Average Daylight Hours in Loreto for September

The chart illustrates the variation in daylight duration in Loreto throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 42m11h 16m12h 1m12h 47m13h 25m13h 43m13h 33m12h 59m12h 15m11h 30m10h 51m10h 31m
Data source: Loreto daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Loreto

In September, the winds in Loreto, Mexico, offer a gentle touch, with an average speed dropping to 3.5 m/s (8 mph), making it one of the calmest months of the year. This seasonal shift follows a gradual decline from the more breezy summer months, where winds hovered around 3.9 m/s in July and August. As the fall approaches, the softened breeze creates a tranquil atmosphere, perfect for enjoying the serene beauty of the surrounding landscapes. Notably, this pattern reflects a broader trend of decreasing wind speeds as summer transitions into autumn, with October slightly increasing to 4.3 m/s, hinting at nature’s cyclical rhythm. Thus, September stands out as a time of stillness, inviting both relaxation and reflection in this picturesque coastal haven.

Average September Wind Speed in Loreto

The chart displays monthly wind speed patterns in Loreto, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.24.44.83.94.14.23.93.63.5 m/s4.33.84.0
Data source: Loreto September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Loreto Compares to Other Months

The weather in Loreto 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 Loreto and find detailed weather information for every month.

In September, the weather is notably warmer, with average temperatures reaching 29°C (84°F) and a maximum of 33°C (91°F), accompanied by high humidity at 77%. The month experiences around 46 mm (1.8 inches) of rainfall over two days. In contrast, January offers a much cooler climate, with average temperatures dropping to 18°C (66°F) and highs around 23°C (75°F). Additionally, January is much drier, with only 8 mm (0.3 inches) of precipitation, all while maintaining a lower humidity level of 70%. For more details on January weather, you can visit Loreto weather in January.

September and February exhibit strikingly contrasting weather patterns. In September, temperatures are warm, with minimums around 24°C (75°F) and averages reaching 29°C (84°F), peaking at 33°C (91°F). This month also experiences some humidity at 77% and a bit of rainfall, with approximately 46 mm (1.8 in) over just two days. In contrast, February offers cooler temperatures, with lows of 13°C (56°F) and an average of 18°C (65°F), peaking at 24°C (76°F). The month is much drier, recording only 4 mm (0.1 in) of rain, and it enjoys lower humidity levels of 66%. For more details, check out Loreto weather in February.

In September, the weather is much warmer with average temperatures reaching around 29°C (84°F) and highs of 33°C (91°F), accompanied by higher humidity at 77%. This month also sees moderate rainfall, with 46 mm (1.8 in) of precipitation spread over about two days. In contrast, March boasts cooler temperatures, with an average of 19°C (67°F) and a maximum of 25°C (78°F). The humidity is lower at 61%, and precipitation is minimal, totaling only 4 mm (0.2 in) over just one day. For more detailed information, you can view the Loreto weather in March.

In September, the weather is significantly warmer with average temperatures ranging from a minimum of 24°C (75°F) to a maximum of 33°C (91°F), accompanied by a high humidity level of 77%. This month also sees some rainfall, with 46 mm (1.8 in) of precipitation falling over two days. In contrast, April offers a much cooler climate, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 29°C (85°F) and an average of only 22°C (71°F). April is notably dry, featuring no rainfall and a lower humidity level of 57%. For more details on April weather, you can visit Loreto weather in April.

In September, the weather is notably warmer, with average temperatures reaching around 29°C (84°F) and maximums climbing to 33°C (91°F). The humidity is quite high at 77%, and there is some precipitation, with about 46 mm (1.8 in) falling over two days. In contrast, May brings milder conditions, with temperatures ranging from a minimum of 17°C (62°F) to an average of 24°C (75°F) and a maximum of 29°C (85°F). Notably, May is dry, with no recorded precipitation and a humidity level of 58%. For more detailed information on the weather in May, you can visit Loreto weather in May.

When comparing the weather in September and June, September stands out with warmer temperatures, featuring a minimum of 24°C (75°F) and an average high of 33°C (91°F). In contrast, June has slightly cooler temperatures, with a minimum of 20°C (68°F) and an average high of 32°C (90°F). Moreover, September experiences higher humidity at 77%, which contributes to a more tropical feel, while June's humidity is much lower at 59%. Rainfall is also more pronounced in September, with 46 mm (1.8 in) occurring over two days, compared to June's almost negligible 6 mm (0.2 in) with no rainy days. For a detailed look at the weather patterns, you can check Loreto weather in June.

In comparing the weather of September and July, we see that both months feature similar average temperatures of 29°C (84°F), with maximum temperatures reaching 33°C (91°F) in September and 33°C (92°F) in July. However, September tends to be slightly cooler at night, with a minimum temperature of 24°C (75°F) compared to July's 25°C (78°F). One notable difference is the precipitation levels; September experiences more rainfall, with 46 mm (1.8 in) over two days, while July is notably drier with only 2 mm (0.1 in) and no rainy days at all, contributing to a lower humidity level of 68% in July compared to 77% in September. For more details on July's climate in Loreto, you can visit Loreto weather in July.

In comparing the weather conditions of September and August, September experiences slightly cooler temperatures, with a minimum of 24°C (75°F) compared to August's 26°C (79°F). Both months have a similar average temperature of around 29°C (85°F), but September has a marginally higher maximum at 33°C (91°F) versus August's 32°C (90°F). Interestingly, September also sees increased precipitation, totaling 46 mm (1.8 in) over 2 days, contrasting with August's lighter rainfall of 12 mm (0.5 in) over just 1 day. Humidity levels are comparable, with September at 77% and August at 76%. For a detailed look at August weather, check Loreto weather in August.

September and October showcase a gradual transition in weather conditions. In September, temperatures range from a minimum of 24°C (75°F) to a high of 33°C (91°F), with an average temperature of 29°C (84°F). This month also experiences higher precipitation, totaling 46 mm (1.8 in) over 2 days, along with a humidity level of 77%. In contrast, October sees slightly cooler temperatures, with a minimum of 21°C (69°F) and a maximum of 32°C (89°F), resulting in an average of 27°C (81°F). Precipitation drops to 23 mm (0.9 in) over just 1 day, and humidity reduces slightly to 76%. For more detailed insights, you can check Loreto weather in October.

In September, the weather is notably warmer with average temperatures reaching around 29°C (84°F) and maximums soaring to 33°C (91°F), accompanied by a higher humidity of 77%. The month experiences an average of 46 mm (1.8 in) of rainfall spread over about two days. In contrast, November brings a cooler climate with temperatures averaging 24°C (75°F) and maximums peaking at 29°C (84°F). Rainfall decreases significantly to 18 mm (0.7 in) over just one day, and humidity settles slightly lower at 73%. For more specific details on November weather, you can visit Loreto weather in November.

In September, the weather is warm and humid, with average temperatures reaching around 29°C (84°F) and maximums soaring up to 33°C (91°F). The month sees a moderate amount of rainfall, totaling 46 mm (1.8 in) over two days, and humidity levels remain high at 77%. In stark contrast, December brings significantly cooler temperatures, with averages dropping to 20°C (68°F) and maximums peaking at 25°C (76°F). Precipitation is minimal during this month, totaling just 6 mm (0.2 in) over one day, and humidity slightly decreases to 71%. For more specific details, you can check out Loreto weather in December.

Compare Loreto's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Loreto

As September rolls in, Loreto experiences the tail end of summer, characterized by warm temperatures and elevated humidity levels. While the average highs remain comfortably warm, reaching around 29°C (84°F), the notable decrease in precipitation days compared to the intense months of July and August offers a respite from the summer rains. Visitors can expect a delightful blend of sunshine and a few brief showers, making this month a perfect time for outdoor exploration. If you're curious about how Loreto's weather evolves throughout the year, don’t miss the complete insights provided in the Loreto Climate guide.