September Weather in Guerrero Negro, Mexico

Last updated: April 22, 2025

In Guerrero Negro, Mexico, September brings a delightful blend of warm temperatures and low precipitation. With maximums reaching 37°C (99°F) and an average of 24°C (76°F), the weather is perfect for outdoor activities. Evenings cool down to a pleasant 16°C (61°F), making it comfortable for nighttime strolls. Rain is virtually absent this month, recording just 3 mm (0.1 in), and with humidity hovering around 75%, the air feels pleasantly humid yet refreshing. September is truly an ideal time to explore all that Guerrero Negro has to offer!

September Temperature in Guerrero Negro

In September, Guerrero Negro, Mexico, experiences a warm and inviting climate, with temperatures that reflect the lingering heat of summer. The month sees a minimum of 16°C (61°F) and an average temperature of 24°C (76°F), while the daytime highs reach up to 37°C (99°F). This trend of increasing warmth follows a gradual rise throughout the summer months, peaking in August but maintaining a comfortable warmth in September. With pleasant evenings and hot days, it's an excellent time for outdoor activities and enjoying the region's stunning landscapes. As the month progresses, temperatures begin to ease into the cooler autumn months, presenting a beautiful transition for visitors and locals alike.

September Weather in Guerrero Negro: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Guerrero Negro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec616162646468737675726762
Data source: Temperature data for Guerrero Negro 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 Guerrero Negro

In September, Guerrero Negro experiences a modest precipitation of 3 mm (0.1 in), marking the end of its dry summer months. This slight increase in rainfall is notable as it breaks a prolonged stretch of dry weather, which began in April and continued through August, with almost no measurable precipitation reported. Interestingly, despite this uptick, September sees no recorded rainy days, highlighting the sporadic nature of rainfall in the region. As the year progresses into the wetter months of October and November, this brief, albeit welcome, respite in the arid landscape hints at the onset of the season when moisture returns to this unique coastal locale.

September Precipitation Trends in Guerrero Negro

The chart displays monthly precipitation patterns in Guerrero Negro, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8101401001391111
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Guerrero Negro

As summer transitions into autumn, September in Guerrero Negro, Mexico, experiences a notable uptick in humidity, reaching 75%—the highest level of the year. This rise follows the warm months of July and August, which maintain average humidity levels around 63% and 70% respectively. The trend reveals that as the year progresses, humidity generally decreases from a high of 71% in January to a low of 58% in April, before starting to climb again in late summer. As September rolls in, the moisture in the air indicates a shift towards the cooler, more humid months ahead, setting the stage for the characteristic conditions of fall.

September Average Humidity in Guerrero Negro

This chart illustrates the average monthly humidity levels in Guerrero Negro, 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.
JanFebMarAprMayJunJulAugSepOctNovDec72%69%61%58%61%61%63%70%75%72%72%72%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Guerrero Negro

As summer transitions into fall, September in Guerrero Negro, Mexico continues to bask under a consistently high UV Index of 12, placing it firmly within the extreme exposure category. This trend of elevated UV levels has persisted since April, showcasing a powerful sun that demands caution for sunbathers and outdoor enthusiasts alike, with a burn time of just 10 minutes. Following a summer of intense rays, September maintains these significant UV levels before tapering into more moderate readings in October. As you enjoy the beautiful coastal landscapes, remember to take proper sun protection measures. For detailed insights, check the Guerrero Negro UV Index.

Maximum UV Index Levels in Guerrero Negro for September

The chart shows the monthly maximum UV Index (UVI) for Guerrero Negro 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.
JanFebMarAprMayJunJulAugSepOctNovDec6810121212121212965
Data source: Guerrero Negro 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 Guerrero Negro

As summer fades into autumn in Guerrero Negro, Mexico, September continues to bask in abundant sunshine, boasting 310 hours of sunlight—significantly higher than the winter months but slightly less than the peak summer sunshine. This month marks a gradual transition from the intense summer glow, where July dazzles with a dazzling 368 hours of sunlight, leading into the more temperate months of October and November. Visitors in September can still enjoy plenty of bright days, making it an ideal time to explore stunning landscapes and vibrant local culture, all while experiencing a delightful balance of warmth and comfort as the daylight begins to wane.

Monthly Sunshine Duration in Guerrero Negro: September Highlighted

The September sunshine duration represents the total number of hours Guerrero Negro 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.
JanFebMarAprMayJunJulAugSepOctNovDec207h236h293h322h349h351h368h349h310h303h262h254h
Data source: Guerrero Negro September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Guerrero Negro During September

In Guerrero Negro, Mexico, September presents a promising likelihood of sunny weather with a 63% chance of sunshine. This month reflects a slight dip from the sunniest August, which boasts a striking 78% chance, but still maintains an appealing probability compared to earlier months. Following a trend of fluctuating sunny days, September's weather often serves as a transition into the more stable conditions of fall. With October elevating back to a 75% chance, it's clear that the region generally enjoys a significant amount of sunlight, making it an inviting destination as summer wanes. So, whether you're planning outdoor adventures or simply hoping for pleasant days, September in Guerrero Negro does not disappoint.

Percentage of Sunny Days in September in Guerrero Negro

The chart illustrates the percentage of sunny days in Guerrero Negro 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 Guerrero Negro experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec71%50%64%57%53%60%54%78%63%75%61%49%
Data source: Guerrero Negro September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Guerrero Negro in September

In Guerrero Negro, Mexico, the rhythm of day and night dances through the year, with September marking a subtle transition. Typically basking in about 12 hours of daylight, September experiences a gradual decline from the sun-soaked midsummer months of June through August, where the days stretch joyously to 13 hours. This decrease heralds the approach of autumn, as the daylight hours begin to mirror the shorter days of October and November, which each average 11 and 10 hours respectively. As daylight wanes, it invites a cozy vibe ideal for exploring the striking landscapes, while still offering plenty of time to embrace the stunning sunsets that Guerrero Negro has to offer.

Average Daylight Hours in Guerrero Negro for September

The chart illustrates the variation in daylight duration in Guerrero Negro throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 34m11h 12m12h 1m12h 50m13h 32m13h 52m13h 41m13h 4m12h 16m11h 27m10h 44m10h 23m
Data source: Guerrero Negro daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Guerrero Negro

In September, Guerrero Negro experiences a pleasant breeze with an average wind speed of 5.4 m/s (12 mph), marking a slight dip from the spirited highs of earlier months. This transitional period hints at the approaching cooler autumn days, following the peak winds of April and May, which soared to 6.2 m/s (14 mph) and 6.3 m/s (14 mph), respectively. Interestingly, September's winds pair nicely with the lingering warmth of summer, as they are considerably stronger than those in the later fall months, specifically November when the average speed drops to 3.9 m/s (9 mph). The gentle zephyrs of this month create an inviting atmosphere, perfect for embracing the beauty of Guerrero Negro’s coastal charm.

Average September Wind Speed in Guerrero Negro

The chart displays monthly wind speed patterns in Guerrero Negro, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.04.85.86.26.35.75.54.85.4 m/s4.93.94.1
Data source: Guerrero Negro September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Guerrero Negro Compares to Other Months

The weather in Guerrero Negro 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 Guerrero Negro and find detailed weather information for every month.

September and January showcase contrasting weather patterns. In September, the temperatures are warmer, with minimums around 16°C (61°F) and averages peaking at 24°C (76°F), reaching a high of 37°C (99°F). The month is characterized by low precipitation, with no rainy days and humidity levels at 75%. In contrast, January experiences cooler temperatures, with minimums dropping to 6°C (42°F) and an average of 16°C (61°F), while maximum temperatures reach 31°C (88°F). This month sees slightly more rainfall, totaling 8 mm (0.3 in) across one day, and humidity remains relatively comfortable at 71%. For more details, see Guerrero Negro weather in January.

September and February present strikingly different weather patterns. September boasts warmer temperatures, with a minimum of 16°C (61°F), an average of 24°C (76°F), and a high reaching up to 37°C (99°F). The humidity is relatively high at 75%, but there is virtually no precipitation. In contrast, February offers cooler temperatures, starting at a minimum of 5°C (42°F), with an average of 16°C (61°F) and a maximum of 30°C (87°F). While it is still mild, February experiences some precipitation, amounting to 10 mm (0.4 in) over one day, with slightly lower humidity at 69%. For a detailed look at February weather, check out Guerrero Negro weather in February.

September typically enjoys warmer temperatures compared to March, with average highs reaching up to 37°C (99°F) while March peaks at 33°C (91°F). The overall climate in September is more humid, with humidity levels around 75%, compared to a comparatively drier March at 61%. Additionally, September is significantly drier, recording no precipitation, whereas March sees about 14 mm (0.5 in) of rain over a single day. For more detailed insights on March weather, you can visit Guerrero Negro weather in March.

When comparing the weather in September and April, one can observe distinct differences in temperature and humidity. In September, the minimum temperature rests at 16°C (61°F), with an average of 24°C (76°F) and a peak reaching up to 37°C (99°F). The month experiences very little precipitation, recording only 3 mm (0.1 in), and boasts absolutely no rainy days, accompanied by a relatively high humidity level of 75%. In contrast, April presents a cooler climate, with temperatures ranging from a minimum of 10°C (51°F) to an average of 18°C (64°F) and a maximum of 33°C (92°F). Additionally, April enjoys completely dry conditions, accumulating no precipitation at all, with a lower humidity of 58%. For more detailed information, you can check out Guerrero Negro weather in April.

September and May showcase distinct climatic characteristics. In September, temperatures range significantly, with a minimum of 16°C (61°F) and a maximum soaring up to 37°C (99°F), while the average hovers around a warm 24°C (76°F). The humidity is relatively high at 75%, and precipitation is minimal, with only 3 mm recorded over the month. In contrast, May offers milder conditions, with a lower minimum temperature of 12°C (54°F) and a maximum of 35°C (96°F), resulting in a cooler average of 18°C (65°F). The humidity in May is also lower at 61%, and it remains dry with only 1 mm of precipitation. For more details on May weather, you can check Guerrero Negro weather in May.

In comparing the weather of September and June, September tends to be warmer with an average temperature of 24°C (76°F) and a maximum reaching up to 37°C (99°F), while June has a lower average of 20°C (68°F) and a peak temperature of 36°C (97°F). While both months experience little to no precipitation, September has a slight chance of rain with an average of 3 mm (0.1 in) despite recording no rainy days. Additionally, humidity is higher in September at 75%, compared to June's more moderate level of 61%. For a more detailed look at the weather conditions in June, you can visit Guerrero Negro weather in June.

In comparing the weather of September and July, September experiences slightly warmer temperatures, with an average of 24°C (76°F) compared to July's 23°C (74°F). Both months share the same minimum temperature of 16°C (61°F), but July has a lower maximum temperature of 33°C (93°F), while September can reach up to 37°C (99°F). Notably, September has a higher humidity level at 75%, compared to July's 63%, making it feel more muggy. However, both months are dry, with July seeing no precipitation, just like September, which records just 3 mm of rain over the month. For more detailed information, you can refer to the Guerrero Negro weather in July.

In September, temperatures in Guerrero Negro are slightly milder compared to August, with a minimum of 16°C (61°F) and a maximum of 37°C (99°F), while August sees a minimum of 18°C (65°F) and a maximum of 38°C (101°F). Both months experience minimal precipitation, with September receiving just 3 mm (0.1 in) and August even less at 1 mm (0.0 in), and neither month has any rainy days. The humidity in September is slightly higher at 75%, compared to 70% in August, contributing to a more humid feel as the summer winds down. For more detailed weather information, you can check Guerrero Negro weather in August.

September's weather in Guerrero Negro is characterized by warmer temperatures, with a minimum of 16°C (61°F) and an average of 24°C (76°F), peaking at a high of 37°C (99°F). In contrast, October brings a slight dip in temperatures, featuring a minimum of 12°C (54°F) and an average of 22°C (72°F), though it can still reach a maximum of 38°C (101°F). While September boasts zero days of precipitation, October receives a modest 9 mm (0.4 in) over just one day, indicating a slight increase in humidity, which sits at 71% compared to September's 75%. For further details, check out Guerrero Negro weather in October.

In September, the weather tends to be warm and dry, with temperatures ranging from a mild 16°C (61°F) at night to a scorching 37°C (99°F) during the day, accompanied by high humidity at 75%. In contrast, November brings cooler and more comfortable conditions, with temperatures dipping to a minimum of 9°C (49°F) and a maximum of 33°C (92°F). Precipitation also increases slightly, with 11 mm (0.4 in) expected over just one day. Overall, November's weather feels more refreshing compared to the heat of September. For more details on the weather during November, you can check out Guerrero Negro weather in November.

September and December present contrasting weather conditions. September enjoys warmer temperatures, with an average high of 24°C (76°F) and peaks reaching up to 37°C (99°F), while December cools down significantly, featuring a mild average of 17°C (62°F) and a maximum of 27°C (81°F). Precipitation also varies, with September experiencing no rainfall, in stark contrast to December, which sees about 11 mm (0.4 in) of rain over two days. Despite their differences, both months maintain a relatively high humidity level, with September at 75% and December slightly lower at 72%. For more insights about the December climate, you can visit Guerrero Negro weather in December.

Compare Guerrero Negro's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Guerrero Negro

As September unfolds in Guerrero Negro, it brings a distinct charm compared to other months, characterized by warm temperatures that hover around a pleasant average of 24°C (76°F). With maximum highs reaching a sizzling 37°C (99°F), this month stands out for its dry conditions, as evidenced by a notably low precipitation total of just 3 mm and a rare absence of rainy days. The humidity remains relatively high at 75%, creating a unique atmosphere that enhances the warmth without overwhelming the senses. For those seeking to understand the full scope of what this coastal gem offers throughout the year, explore more at Guerrero Negro Climate.