September Weather in El Morro, Mexico

Last updated: April 22, 2025

El Morro, Mexico, in September, experiences mild and pleasant weather, with maximum temperatures reaching 24°C (76°F) and an average of 21°C (71°F), while the minimum dips to a comfortable 19°C (67°F). Rainfall is nearly non-existent, with only 1 mm (0.0 in) recorded and no precipitation days, making it an ideal time for outdoor activities. The humidity level remains at 80%, adding a touch of tropical warmth to the atmosphere. Overall, September in El Morro offers a harmonious blend of warmth and dryness, perfect for enjoying the scenic beauty of this coastal gem.

September Temperature in El Morro

In September, El Morro experiences a gentle transition into the cooler autumn months, with temperatures reflecting a warm yet comfortable climate. The minimum temperature rises to 19°C (67°F), while the average hovers around 21°C (71°F), peaking at a pleasant 24°C (76°F) during the day. This slight increase in warmth compared to August's averages signals the lingering summer heat, perfect for enjoying the outdoor splendor. As the month progresses, travelers can bask in the mildness of early autumn, making it an ideal time for exploring the region's natural beauty and rich culture. Overall, September offers a delightful balance between the tail-end of summer and the onset of the cooler season.

September Weather in El Morro: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in El Morro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec626160616163677070696764
Data source: Temperature data for El Morro 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 El Morro

In September, El Morro, Mexico, experiences remarkably low precipitation, with only 1 mm (0.0 in), signaling the region's dry spell as summer transitions to fall. The month stands out, as no significant rainfall is recorded, following a series of similarly arid months from June to August. This trend of minimal rainfall is characteristic of the late summer months in El Morro, leading to a cumulative dry period where the skies often remain clear. As October approaches, a notable shift is anticipated, historically bringing a spike in precipitation, hinting at the return of the rainy season.

September Precipitation Trends in El Morro

The chart displays monthly precipitation patterns in El Morro, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1211101321111659
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in El Morro

September in El Morro, Mexico, showcases a noticeable shift in humidity as the summer months start to wane. With humidity levels at 80%, this month experiences a slight dip from the peak summer highs of 86% in July and 85% in August. Typically characterized by high humidity during the earlier months, September's figures still reflect the lingering warmth of the season. Following this pattern of gradual decline, humidity levels decrease further into the fall, dropping to 75% in October. This progression highlights a transition from the intense summer moisture, paving the way for the drier months ahead, while still leaving a hint of tropical ambiance in the air.

September Average Humidity in El Morro

This chart illustrates the average monthly humidity levels in El Morro, 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.
JanFebMarAprMayJunJulAugSepOctNovDec74%77%77%76%83%83%86%85%80%75%73%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in El Morro

In September, El Morro, Mexico, sees a UV Index of 11, categorized as extreme, which means sun protection is crucial during this time. As summer transitions into fall, the UV index remains high, consistent with the levels observed in the previous months of June to August. With a burn time of just 10 minutes, it's essential for sun-seekers to take precautions to avoid skin damage. This trend highlights the region's intense solar exposure, particularly from April through September when the UV Index peaks. For those planning a visit, understanding the UV Index is vital to ensure a safe and enjoyable outdoor experience. For more details, check out El Morro UV Index.

Maximum UV Index Levels in El Morro for September

The chart shows the monthly maximum UV Index (UVI) for El Morro 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.
JanFebMarAprMayJunJulAugSepOctNovDec6810111112121111965
Data source: El Morro 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 El Morro

As summer winds down, September in El Morro, Mexico continues to bask in a remarkable 311 hours of sunshine, reflecting a steady embrace of daylight following the peak of 365 hours in July. This month captures the transition from the sun-soaked extravagance of summer to the gentler warmth of autumn, offering residents and visitors alike a delightful blend of bright days. With a gradual decline in sunlight hours as the year progresses, from September's vibrant glow to November's 261 hours, the warmth lingers just long enough to savor outdoor adventures and breathtaking sunsets by the coast. The consistency in sunny days throughout the late summer and early fall highlights El Morro's charm, making it an idyllic spot for those seeking sunshine and relaxation.

Monthly Sunshine Duration in El Morro: September Highlighted

The September sunshine duration represents the total number of hours El Morro 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.
JanFebMarAprMayJunJulAugSepOctNovDec212h233h293h313h332h327h365h346h311h294h261h257h
Data source: El Morro September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in El Morro During September

In September, El Morro, Mexico, boasts a 70% chance of sunny weather, making it a delightful choice for those seeking sunshine as summer transitions into fall. This month stands out as a continuation of the higher sunshine rates experienced in August (74%), signaling that the sunny days of summer linger a bit longer. Following a slight dip in sunlight during May and June, the weather begins to stabilize, with percentages remaining consistently high into the fall months. As October approaches, a promising 73% chance of sunshine awaits, suggesting that September serves as an ideal time to enjoy the beautiful coastal scenery and warm weather before the cooler months set in.

Percentage of Sunny Days in September in El Morro

The chart illustrates the percentage of sunny days in El Morro 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 El Morro experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec72%49%60%53%40%46%57%74%70%73%62%50%
Data source: El Morro September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in El Morro in September

In September, El Morro, Mexico, experiences a delightful 12 hours of daylight, signaling a gentle transition towards the shorter days of fall. This marks a subtle decrease from the consistent 13 hours enjoyed during the peak summer months of June through August. As summer wanes, the daylight duration reflects a gradual shift, following an upward trend in spring when the days stretch from 10 hours in January to a peak of 13 hours in May. The rhythm of the year is evident, as September's daylight serves as a bridge between the long, sunlit days of summer and the shorter, cozy evenings of autumn, creating a perfect backdrop for outdoor adventures and gatherings before the onset of cooler months.

Average Daylight Hours in El Morro for September

The chart illustrates the variation in daylight duration in El Morro 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 12m12h12h 50m13h 32m13h 52m13h 41m13h 4m12h 16m11h 27m10h 44m10h 22m
Data source: El Morro daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in El Morro

In September, the winds in El Morro, Mexico, exhibit a gentle shift, clocking in at an average speed of 5.8 m/s (13 mph). This slight increase from the summer lows of 5.1 m/s (11 mph) in both July and August suggests the onset of more invigorating breezes as the seasons transition. While the wind reaches its peak in the spring months of March and April at 7.4 m/s (17 mph), September's relatively moderate winds offer a refreshing respite, bridging the gap between summer stillness and the more robust gusts of autumn. As the month progresses, the anticipation of stronger winds in October signals a dynamic change, inviting both locals and travelers to embrace the invigorating sea air.

Average September Wind Speed in El Morro

The chart displays monthly wind speed patterns in El Morro, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.27.07.47.46.75.65.15.15.8 m/s6.35.45.6
Data source: El Morro September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in El Morro Compares to Other Months

The weather in El Morro 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 El Morro and find detailed weather information for every month.

September and January present distinctly different weather patterns. In September, temperatures are generally warmer, with minimums around 19°C (67°F) and averages reaching 21°C (71°F), peaking at a comfortable 24°C (76°F). This month enjoys minimal precipitation, averaging only 1 mm with no rainy days, and features high humidity at 80%. In contrast, January experiences cooler temperatures, with a minimum of 13°C (56°F), an average of 17°C (62°F), and a maximum of 20°C (69°F). January also has a higher likelihood of precipitation, totaling 12 mm over 2 days, and is characterized by slightly lower humidity at 74%. For more specific details about January weather, you can visit El Morro weather in January.

Comparing the weather in September and February reveals notable differences. September typically enjoys warmer temperatures, with a minimum of 19°C (67°F) and an average of 21°C (71°F), while February experiences cooler conditions, starting at a minimum of 13°C (56°F) and averaging around 16°C (61°F). Precipitation is minimal in September with no recorded rain, contrasting sharply with February, which sees about 11 mm (0.4 in) of rain over just one day. Humidity levels are slightly higher in September at 80%, compared to February's 77%. For a more detailed look, visit El Morro weather in February.

When comparing the weather in September and March, September is notably warmer, with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 24°C (76°F) and an average of 21°C (71°F). In contrast, March sees cooler temperatures, with minimums of 12°C (54°F) and maximums of 20°C (69°F), averaging at 16°C (61°F). September also enjoys dry conditions, experiencing no days of precipitation and only 1 mm of rain, while March has a bit more moisture, with 10 mm of rain over one day. Humidity levels are slightly higher in September at 80%, compared to March's 77%. For more detailed information on March weather, you can visit El Morro weather in March.

September and April present distinctly different weather conditions. In September, the temperatures range from a minimum of 19°C (67°F) to a maximum of 24°C (76°F), with an average temperature of 21°C (71°F). The humidity is relatively high at 80%, but with no recorded rainfall, it’s typically a dry month. In contrast, April offers cooler temperatures, with a minimum of 13°C (56°F) and a maximum of 19°C (67°F), averaging at 16°C (61°F). Although it also experiences minimal precipitation of just 1 mm (0.1 in) over the course of the month and maintains a moderate humidity level of 76%, the overall weather feels crisp and refreshing. For more specific details on the conditions in April, you can check El Morro weather in April.

In comparing the weather of September and May, September is notably warmer, with average temperatures ranging from a minimum of 19°C (67°F) to a maximum of 24°C (76°F), while May offers cooler conditions, with temperatures averaging between 14°C (57°F) and 19°C (66°F). Precipitation levels are slightly higher in May, with 3 mm (0.1 in) recorded, although both months experience no rainy days. Additionally, September maintains a humidity level of 80%, just slightly lower than May's 83%. For a more detailed look at May weather in El Morro, check out El Morro weather in May.

In comparing the weather of September and June, September enjoys warmer temperatures, with a minimum of 19°C (67°F) and an average of 21°C (71°F), while June has cooler temperatures, starting at a minimum of 15°C (59°F) and averaging around 17°C (63°F). Although both months experience very little precipitation, September remains drier with only 1 mm of rain, compared to June's 2 mm. Humidity levels are slightly higher in June at 83%, compared to September's 80%. For more detailed insights on June weather, you can check El Morro weather in June.

In comparing the weather of September to July, one can observe a few notable differences. September generally enjoys slightly warmer temperatures, with minimums around 19°C (67°F) and maximums reaching 24°C (76°F), while July features cooler minimums at 16°C (62°F) and maximums peaking at 22°C (72°F). Both months experience minimal precipitation, with only 1 mm recorded and no rainy days in either month. However, September tends to have lower humidity at 80%, compared to July’s higher average of 86%. For a more detailed look at July's weather, you can refer to this link: El Morro weather in July.

In August, the weather is typically warm with minimum temperatures around 18°C (65°F) and maximums reaching up to 26°C (78°F). The average temperature hovers at 21°C (70°F), and despite experiencing 1 mm of precipitation, rainfall is not a frequent occurrence, occurring on 0 days. Humidity levels are also slightly higher at 85%.

In contrast, September brings slightly cooler temperatures, with minimums of 19°C (67°F) and maximums of 24°C (76°F), while still maintaining an average of 21°C (71°F). Like August, September also records very little precipitation, with just 1 mm and no rainy days. However, humidity remains elevated at 80%, contributing to a warm feeling during the month. For more details, check out El Morro weather in August.

In September, the weather is warm with temperatures averaging around 21°C (71°F), featuring a mild minimum of 19°C (67°F) and a maximum of 24°C (76°F). The month boasts extremely low precipitation, with no rainy days and humidity levels hovering at 80%. By October, the temperatures remain similar, with an average of 21°C (69°F) but a slight drop in minimum temperature to 17°C (63°F) and an increase in maximum temperature to 26°C (78°F). However, October brings more precipitation, totaling 16 mm (0.6 in), while the humidity decreases to 75%. For further details, visit El Morro weather in October.

In September, the weather is generally warmer, with average temperatures ranging from a mild 19°C (67°F) to a maximum of 24°C (76°F), and an impressive lack of rainfall—just 1 mm over the month. The high humidity of 80% can make it feel quite warm, despite the pleasant temperatures. In contrast, November sees cooler temperatures, with averages dipping to 16°C (62°F) and reaching a maximum of 22°C (72°F). It also experiences slightly more precipitation, totaling 5 mm over one day, and a lower humidity level of 73%. For more details on the weather patterns in November, you can check El Morro weather in November.

In September, the weather is warm and pleasant, with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 24°C (76°F) and an average of 21°C (71°F). This month boasts minimal precipitation, with only 1 mm recorded and no rainy days, along with high humidity at 80%. In contrast, December brings cooler temperatures, with a minimum of 14°C (58°F), an average of 18°C (64°F), and a maximum of 21°C (69°F). The month is also wetter, seeing 9 mm of precipitation over two days, and has lower humidity at 71%. For more detailed information, check out El Morro weather in December.

Compare El Morro's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in El Morro

As September unfolds in El Morro, visitors can expect a welcoming climate characterized by mild temperatures that create the perfect backdrop for outdoor adventures. Unlike the hotter summer months, this time of year offers comfortable daily highs and pleasantly cool nights, making it ideal for exploration. With minimal rainfall and consistently high humidity, the weather remains steady, allowing for uninterrupted enjoyment of the stunning coastal scenery. For a deeper dive into what the climate looks like throughout the year, check out El Morro Climate.