Last updated: August 21, 2025
In September, San Marcos La Laguna, Guatemala, experiences a dynamic climate characterized by warm days and cooler nights. With maximum temperatures reaching around 24°C (75°F) and an average of 18°C (64°F), visitors can enjoy a pleasant atmosphere, though nights can drop to a minimum of 12°C (54°F). This month is marked by significant rainfall, with a total precipitation of 358 mm (14.1 in) spread over 26 days, contributing to the lush, vibrant landscapes the region is known for. Notably, the humidity levels hover around 82%, enhancing the tropical feel of this stunning lakeside destination.
In September, San Marcos La Laguna enjoys a mild climate, with temperatures ranging from a minimum of 12°C (54°F) to a comfortable maximum of 24°C (75°F). The average temperature holds steady at 18°C (64°F), echoing the consistent warmth seen throughout the preceding months. This pattern illustrates the region's gentle transition into the rainy season, with temperatures remaining pleasantly moderate compared to the hotter summer months. As September progresses, visitors can expect refreshing breezes and lush landscapes, making it an ideal time for exploration and immersion in the natural beauty of Lake Atitlán and its surroundings.
In September, San Marcos La Laguna experiences a marked increase in precipitation, with a substantial 358 mm (14.1 in) of rain measured over 26 days. This month is characterized by frequent downpours, contributing to its status as one of the wettest periods of the year. Following the heavy rains of May and June, September continues the trend of significant rainfall, though slightly less than the towering peaks of late spring. As the season transitions into October, this deluge sets the stage for a gradual decline in precipitation, hinting at the upcoming drier months. The rhythmic pattern of rainfall in San Marcos not only shapes the lush landscape but also fosters a vibrant ecosystem, showcasing the cyclical nature of its climate.
In September, San Marcos La Laguna experiences a notable peak in humidity, reaching 82%, matching the levels seen in the previous month of August. This high humidity is part of a larger trend throughout the year, where we observe a gradual increase from the drier months of January to April, when humidity dips to its lowest at 57%. As the rainy season approaches, levels rise significantly, peaking in late summer and early fall. Following September, the humidity remains elevated into October, reaching 83%, before gradually easing into the drier months ahead. This cyclical pattern highlights the distinctive climatic characteristics of the region, making the transition into fall distinctly palpable in the air.
September in San Marcos La Laguna, Guatemala, continues the trend of extreme UV exposure, with a UV Index of 14. This reflects a pattern set throughout the year, where the region consistently experiences dangerously high UV levels. Similar to the preceding months of August and October, with the same Index, outdoor activities demand caution, as the burn time remains a swift 10 minutes. As the dry season begins to taper, it’s crucial to prioritize sun protection strategies. For more comprehensive information, check out the San Marcos La Laguna UV Index.
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As September arrives in San Marcos La Laguna, Guatemala, the sun continues to shine brightly, offering a delightful 287 hours of sunlight. This month marks a gentle dip in hours compared to the summer peak, yet it still maintains a robust ambiance perfect for outdoor adventures and serene lakeside relaxation. Following the vibrant months of July and August, with their impressive sunlight totals of 314 and 306 hours respectively, September ushers in a subtle shift, hinting at the transition towards the cooler autumn months. Despite this slight reduction, the sunny days remain ample, creating an inviting atmosphere for visitors and locals alike to bask in the captivating beauty of this lakeside paradise. As the year progresses, San Marcos continues to impress with its consistently generous sunshine, encouraging everyone to explore and embrace the stunning landscapes this charming village has to offer.
In September, the likelihood of enjoying sunny weather in San Marcos La Laguna, Guatemala is quite low, with only a 14% chance of sunshine. This trend of diminished sunshine stretches through the rainy season, peaking in May and June when sunny days dwindle to just 17% and 9% respectively. It’s noteworthy that as the months progress toward October, the chance of sunshine increases to 30%, hinting at a gradual transition back to brighter days. With September sitting firmly in the midst of the rainy season, those planning a visit should prepare for more overcast skies and possible showers than sun-soaked adventures.
In September, San Marcos La Laguna enjoys a consistent 12 hours of daylight, marking the continuation of a period characterized by plentiful sunlight that begins in March and lasts through August. This steady duration is a testament to the region's geographical stability, ensuring that residents and visitors alike can soak up the sun for extended periods throughout the day. Following September, the daylight begins to gradually diminish as October approaches, with only 11 hours of light. This shift signals the onset of shorter days, creating a rhythmic cycle that harmonizes with the changing seasons of this enchanting destination in Guatemala.
As September rolls into San Marcos La Laguna, the gentle breezes begin to mellow, with average wind speeds dropping to 1.3 m/s (3 mph). This decline marks a continuation of the slightly calmer conditions seen throughout the summer months, where winds have hovered around the lower end of the spectrum. The tranquil atmosphere paired with a soft, whispering wind invites residents and visitors alike to bask in the serene beauty of the lake’s surroundings. Unlike the sturdier gusts of January and November, which peak at 1.9 m/s (4 mph), September offers a more reflective pace, perfect for enjoying the tranquil views and vibrant local culture. With this slight dip, the month serves as a gentle reminder of the warm embrace of the upcoming autumn while maintaining the enchanting essence of this Guatemalan gem.
Weather in San Marcos La Laguna varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in San Marcos La Laguna, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present notably different weather patterns. September typically boasts warmer temperatures, ranging from a minimum of 12°C (54°F) to a pleasant maximum of 24°C (75°F), with an average of 18°C (64°F). However, it is also characterized by high humidity at 82% and significant rainfall, accumulating 358 mm (14.1 in) over 26 days. In contrast, January features cooler temperatures, with a minimum of 8°C (47°F) and a consistent maximum of 24°C (76°F), but it has a lower average temperature of 16°C (61°F). Rainfall in January drops dramatically to just 16 mm (0.6 in) over only 5 days, accompanied by a lower humidity level of 76%. For more information on the weather specifics, you can view San Marcos La Laguna weather in January.
September and February offer distinct weather experiences. September typically sees a range of temperatures from a minimum of 12°C (54°F) to a maximum of 24°C (75°F), with an average of 18°C (64°F). This month is characterized by significant rainfall, averaging 358 mm (14.1 in) spread across 26 days, and high humidity levels at 82%. In contrast, February presents milder conditions, with temperatures ranging from a minimum of 10°C (50°F) up to a maximum of 26°C (79°F) and an average of 17°C (62°F). Rainfall is much less frequent, with only 34 mm (1.3 in) over 8 days and humidity dropping to 68%. For a closer look at the weather specifics during February, you can check San Marcos La Laguna weather in February.
September and March showcase contrasting weather patterns. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 24°C (75°F), with an average of 18°C (64°F). This month is characterized by high humidity at 82% and significant rainfall, totaling 358 mm (14.1 in) over 26 days. In contrast, March experiences milder temperatures, with a minimum of 9°C (49°F) and a maximum of 27°C (80°F), averaging 17°C (63°F). Precipitation is considerably lower in March, amounting to just 53 mm (2.1 in) over 8 days, and the humidity drops to 59%. For more specific weather details, you can visit San Marcos La Laguna weather in March.
When comparing the weather in September and April, we see some notable differences. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 24°C (75°F), with an average of 18°C (64°F). This month also experiences high humidity at 82% and significant rainfall, totaling 358 mm (14.1 in) over 26 days. In contrast, April boasts slightly milder temperatures, with a minimum of 10°C (50°F) and a maximum of 26°C (79°F), yet it shares the same average of 18°C (64°F). However, April enjoys much less precipitation, with only 159 mm (6.2 in) over 19 days and a significantly lower humidity of 57%. For more specifics on April weather, you can check San Marcos La Laguna weather in April.
When comparing the weather in September and May, both months start with a similar minimum temperature of 12°C (54°F), but May typically sees slightly warmer afternoons, peaking at a maximum of 26°C (78°F) compared to September's max of 24°C (75°F). In terms of precipitation, May is generally wetter, accumulating 449 mm (17.7 in) over 29 days, while September has a total of 358 mm (14.1 in) across 26 days. Humidity levels also differ; September is significantly more humid at 82%, whereas May's humidity stands at a more comfortable 65%. For more details on May weather, check out San Marcos La Laguna weather in May.
In comparing the weather between September and June, we see that both months have similar average temperatures, with September having slightly lower minimum and maximum temperatures compared to June. September experiences more precipitation overall, totaling 358 mm over 26 days, while June sees 405 mm spread over 27 days. Additionally, September's humidity is notably higher at 82%, contrasting with June's more moderate level of 66%. This means that while the temperatures may be pleasing in both months, the weather conditions can feel quite different due to the disparity in humidity and rainfall. For more details, you can check San Marcos La Laguna weather in June.
In comparing the weather between July and September, we find that both months have similar average temperatures, hovering around 18°C (64°F). July experiences slightly higher minimum and maximum temperatures, ranging from 13°C (55°F) to 25°C (76°F), while September's range is 12°C (54°F) to 24°C (75°F). However, September is notably wetter, with a substantial increase in precipitation at 358 mm (14.1 in) over 26 days, compared to July's 157 mm (6.2 in) over just 16 days. Additionally, September's humidity level is higher at 82%, compared to July's 75%, contributing to a more humid climate as summer transitions into fall. For more detailed information on July weather patterns, visit San Marcos La Laguna weather in July.
In comparing the weather of September and August, both months exhibit similar minimum temperatures of 12°C (54°F) and an average of 18°C (64°F). However, September tends to be cooler overall, with a maximum temperature reaching only 24°C (75°F), contrasted with August's higher peak of 26°C (78°F). Additionally, September experiences an increase in precipitation, accumulating 358 mm (14.1 in) over 26 days, compared to August's 290 mm (11.4 in) over 24 days. Despite both months maintaining a humidity level of 82%, September's wetter conditions may contribute to a more overcast and damp atmosphere. For a closer look at August weather in the region, you can explore this link: San Marcos La Laguna weather in August.
In comparing the weather for September and October, we can see some notable differences despite their similarities. Both months experience a minimum temperature of around 12°C (54°F), but October's average temperature drops slightly to 17°C (64°F) from September's 18°C (64°F). The maximum temperatures remain fairly consistent, reaching up to 24°C (76°F) in October compared to 24°C (75°F) in September.
When it comes to precipitation, October sees a decrease to 292 mm (11.5 in) from September's 358 mm (14.1 in), even though both months experience a high number of rainy days—27 in October compared to 26 in September. Humidity levels are quite similar, with October recording 83%, just slightly above September’s 82%. For a detailed look at October weather, you can check out San Marcos La Laguna weather in October.
September and November in San Marcos La Laguna present distinct weather patterns. In September, temperatures range from a minimum of 12°C (54°F) to a maximum of 24°C (75°F), with an average of 18°C (64°F). The month is notably wetter, with precipitation totaling 358 mm (14.1 in) over 26 days, contributing to high humidity levels around 82%. In contrast, November experiences slightly cooler temperatures, with a minimum of 10°C (51°F) and an average of 17°C (63°F), while the maximum remains the same at 24°C (75°F). Precipitation drops significantly to 64 mm (2.5 in) over just 10 days, and humidity is a bit lower at 80%. For more details, you can check San Marcos La Laguna weather in November.
September weather is characterized by warmer temperatures and significantly higher precipitation, with an average of 18°C (64°F) and rainfall occurring on 26 days, totaling 358 mm (14.1 in). The humidity levels are also quite high at 82%. In contrast, December brings cooler temperatures, with a minimum of 8°C (47°F) and an average of 16°C (62°F). Rainfall is minimal during this month, only 22 mm (0.9 in) over just 5 days, and humidity decreases to 76%. For more detailed information, you can check San Marcos La Laguna weather in December.
As September graces San Marcos La Laguna, its weather stands out with a unique blend of cooler temperatures and increased rainfall compared to the drier months of the year. Visitors can expect a crisp, refreshing atmosphere, with a steady embrace of high humidity. The frequent downpours transform the landscape into a lush, vibrant oasis, making it an ideal time for nature lovers and photographers. While other months may offer sunnier skies and warmer days, September invites a different kind of beauty and serenity. For a deeper dive into what to expect throughout the year, explore the full details at San Marcos La Laguna Climate.