September Weather in San Juan La Laguna, Guatemala

Last updated: August 21, 2025

September in San Juan La Laguna, Guatemala offers a blend of comfortable temperatures and a vibrant atmosphere. With maximums reaching 24°C (75°F) and an average of 18°C (64°F), the weather is generally pleasant, but visitors should be prepared for cooler nights as temperatures can drop to a minimum of 12°C (54°F). This month is characterized by significant rainfall, accumulating to 358 mm (14.1 in) over 26 days, resulting in an 82% humidity level that enhances the lush greenery of the region. Embrace the refreshing climate as you explore the beauty and culture of this picturesque lakeside town.

September Temperature in San Juan La Laguna

In September, San Juan La Laguna experiences a pleasant climate, with temperatures ranging from a minimum of 12°C (54°F) to a comfortable maximum of 24°C (75°F). The average temperature hovers around 18°C (64°F), providing a mild and inviting atmosphere for both locals and visitors. Notably, September marks a time of stability in temperatures, maintaining the same minimum as the previous month while slightly dipping in maximum compared to the warmer summer months. As the rainy season continues, the cooler nights are perfect for cozy evenings, making it an ideal month for exploring the stunning landscapes and vibrant culture of this charming lakeside town.

September Weather in San Juan La Laguna: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Juan La Laguna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan La Laguna, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec616263646464646464636361
Data source: Temperature data for San Juan La Laguna generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in San Juan La Laguna

September marks a notable peak in precipitation for San Juan La Laguna, Guatemala, with an impressive 358 mm (14.1 in) of rainfall spanning 26 days. This month's downpours contribute significantly to the region's annual total, following the heavy rains of May and June, which are typically the wettest months. As the rainy season reaches its crescendo, September's moist embrace creates a vibrant landscape, rich in lush greenery and revitalized ecosystems. The pattern suggests that while precipitation begins to taper off in October, the abundance of rain during September plays a crucial role in sustaining the area's agricultural vitality and natural beauty throughout the year.

September Precipitation Trends in San Juan La Laguna

The chart displays monthly precipitation patterns in San Juan La Laguna, 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. In San Juan La Laguna, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1634531594494051572903582926422
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in San Juan La Laguna

September in San Juan La Laguna, Guatemala, marks a peak in humidity levels, matching the high of 82% previously seen in August. This month is part of a trend where humidity typically rises during the latter half of the year, starting with a more temperate 59% in March and gradually increasing, culminating in the late summer and early fall. As the rainy season continues into October, **humidity levels can climb even further to 83%, indicating a pattern of heightened moisture content in the air that characterizes this period. The comfort of the landscape might be balanced by this humidity, contributing to the lush greenery that defines the region, making September a vibrant yet damp month for both residents and visitors alike.

September Average Humidity in San Juan La Laguna

This chart illustrates the average monthly humidity levels in San Juan La Laguna, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in San Juan La Laguna is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Juan La Laguna

In September, San Juan La Laguna continues to experience an extreme UV Index, holding steady at 14. This marks a slight decrease from the peak of 16 in April but maintains the trend of consistently high exposure levels throughout the year. The burn time remains at just 10 minutes, emphasizing the need for precaution against harmful sun rays. As residents and visitors alike enjoy the beautiful surroundings, it’s crucial to stay vigilant with sun protection. For more insights on UV levels year-round, check out San Juan La Laguna UV Index.

Maximum UV Index Levels in San Juan La Laguna for September

The chart shows the monthly maximum UV Index (UVI) for San Juan La Laguna 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. In September, the maximum UV index in San Juan La Laguna typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315161515151414141110
Data source: San Juan La Laguna 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 San Juan La Laguna

In September, San Juan La Laguna enjoys a delightful 287 hours of sunshine, making it a favored month for visitors seeking both warmth and vibrant landscapes. Although this is lower than the peak of 321 hours seen in March, it still reflects a comfortable transition from the busy summer months, with light and warmth lingering for outdoor adventures. Notably, the sunshine hours during this month are relatively consistent, following a trend of varying brightness throughout the year. After August's 306 hours, September gently eases into autumn while maintaining a robust amount of sunlight, setting the stage for picturesque views and memorable experiences in this enchanting Guatemalan paradise.

Monthly Sunshine Duration in San Juan La Laguna: September Highlighted

The September sunshine duration represents the total number of hours San Juan La Laguna 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.
JanFebMarAprMayJunJulAugSepOctNovDec251h283h321h311h301h272h314h306h287h276h294h311h
Data source: San Juan La Laguna September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Juan La Laguna During September

In September, visitors to San Juan La Laguna, Guatemala, can expect a modest likelihood of sunny weather, with only a 14% chance of clear skies. This trend mirrors the preceding months of July and August, where sunny conditions are similarly scarce, indicating that the region enters a period of higher precipitation and overcast days during late summer. Notably, the chances of sunshine begin to rise again in October, climbing to 30%, suggesting that while September may not be ideal for sun-seekers, the promise of clearer skies is just around the corner. So, while rain may be more prevalent this month, the vibrant culture and stunning landscapes of San Juan La Laguna still offer plenty of indoor charm and beauty.

Percentage of Sunny Days in September in San Juan La Laguna

The chart illustrates the percentage of sunny days in San Juan La Laguna 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 San Juan La Laguna experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec57%59%56%29%17%9%21%14%14%30%47%63%
Data source: San Juan La Laguna September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Juan La Laguna in September

In San Juan La Laguna, Guatemala, the daylight duration exhibits an intriguing pattern throughout the year. Beginning with a consistent 11 hours in January and February, the days gradually extend, reaching a peak of 12 hours from March through September. This six-month stretch of ample daylight creates a vibrant atmosphere, perfect for exploring the scenic beauty of the region. As the year begins to wind down, daylight duration tapers back to 11 hours in October, continuing the trend through the end of the year. This rhythm of light not only marks the seasons but also influences the daily lives of the community, adding to the charm of this picturesque lakeside town.

Average Daylight Hours in San Juan La Laguna for September

The chart illustrates the variation in daylight duration in San Juan La Laguna throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 21m11h 39m12h 3m12h 27m12h 48m12h 58m12h 52m12h 34m12h 10m11h 46m11h 26m11h 15m
Data source: San Juan La Laguna daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in San Juan La Laguna

In September, the gentle breeze of San Juan La Laguna settles at an average wind speed of 1.3 m/s (3 mph), marking one of the calmest months of the year. This slight dip in wind speed, reflective of the transition from the vibrant summer to the onset of autumn, creates a serene atmosphere ideal for unwinding by the lake or exploring the lush surroundings. While January to April experience slightly stronger winds, peaking at 1.9 m/s, the consistently lower speeds from May through August highlight a pattern of tranquility leading into the fall. Interestingly, as the year shifts into October and November, the winds begin to regain strength, hinting at a renewal of energy as the region prepares for the changing seasons.

Average September Wind Speed in San Juan La Laguna

The chart displays monthly wind speed patterns in San Juan La Laguna, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.91.81.81.61.41.21.71.41.3 m/s1.31.91.8
Data source: San Juan La Laguna September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in San Juan La Laguna Compares to Other Months

Weather in San Juan 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 Juan La Laguna, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present 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 temperature of 18°C (64°F). This month is characterized by high humidity at 82% and significant rainfall, receiving 358 mm (14.1 in) over 26 days. In contrast, January experiences milder weather, with temperatures ranging from a low of 8°C (47°F) to a high of 24°C (76°F) and an average of 16°C (61°F). January is much drier, with only 16 mm (0.6 in) of precipitation spread over just 5 days and lower humidity at 76%. For more details on weather conditions, check out the San Juan La Laguna weather in January.

September and February present 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 also experiences considerable precipitation, with 358 mm (14.1 in) accumulated over 26 days, resulting in high humidity at 82%. In contrast, February offers milder temperatures, with a minimum of 10°C (50°F) and a maximum of 26°C (79°F), averaging 17°C (62°F). Precipitation is significantly reduced in February, totaling only 34 mm (1.3 in) over just 8 days, accompanied by lower humidity levels of 68%. For more detailed information, you can check out San Juan La Laguna weather in February.

When comparing the weather in September and March, notable differences emerge. September tends to be cooler overall, with average temperatures ranging from 12°C (54°F) at night to a maximum of 24°C (75°F) during the day. In contrast, March experiences slightly warmer conditions, with temperatures ranging from a minimum of 9°C (49°F) up to 27°C (80°F). However, September is significantly wetter, receiving 358 mm (14.1 in) of rainfall over 26 days, while March sees only 53 mm (2.1 in) across just 8 days. Humidity levels also differentiate the two months, as September has a higher average humidity of 82% compared to March’s 59%. For more detailed insights, you can check out San Juan La Laguna weather in March.

In comparing the weather between September and April, both months showcase mild average temperatures around 18°C (64°F). However, September tends to be wetter, with a significant 358 mm (14.1 in) of rainfall over 26 days, leading to a much higher humidity level at 82%. In contrast, April enjoys warmer maximum temperatures reaching 26°C (79°F) and substantially less rainfall at 159 mm (6.2 in) over just 19 days, resulting in a drier and more comfortable atmosphere with a humidity of 57%. For more detailed insights on April weather specifically, you can refer to San Juan La Laguna weather in April.

When comparing the weather between September and May, both months feature similar minimum temperatures, averaging around 12°C (54°F). However, May generally experiences slightly higher average temperatures, peaking at 26°C (78°F) compared to September's maximum of 24°C (75°F). Precipitation levels are notably higher in May, with 449 mm (17.7 in) falling over 29 days, whereas September sees 358 mm (14.1 in) across 26 days. Additionally, May has a lower humidity of 65%, providing a contrast to September's higher humidity level of 82%. For more detailed information, visit San Juan La Laguna weather in May.

In comparing the weather between September and June, we see some notable similarities and differences. Both months feature an average temperature of 18°C (64°F) and experience similar maximum temperatures, with June reaching slightly higher at 24°C (76°F) compared to September's 24°C (75°F). However, September tends to be wetter, with precipitation totaling 358 mm (14.1 in) over 26 days, while June has slightly higher rainfall at 405 mm (15.9 in) across 27 days. The humidity levels are also distinct, with September at a high 82%, while June is more comfortable at 66%. For more details on June weather specifically, visit San Juan La Laguna weather in June.

When comparing the weather in September and July, we see some notable differences. September experiences slightly cooler temperatures, with an average of 18°C (64°F) compared to July's 18°C (65°F), although both months have similar minimum and maximum temperatures. However, September brings significantly more rainfall, totaling 358 mm (14.1 in) over 26 days, while July has a much lower precipitation level of 157 mm (6.2 in) over just 16 days. Additionally, September's humidity is higher at 82%, compared to July's 75%. These factors contribute to September feeling much wetter and more humid than July, making it a challenging time for outdoor activities. For a closer look at July's weather, you can check this link: San Juan La Laguna weather in July.

In comparison to August, September experiences slightly cooler temperatures, with maximums reaching 24°C (75°F) compared to August's 26°C (78°F). Both months present similar minimum and average temperatures, remaining around 12°C (54°F) and 18°C (64°F) respectively. However, September is notably wetter, with precipitation totaling 358 mm (14.1 in) over 26 days, while August has 290 mm (11.4 in) over 24 days. Humidity remains constant at 82% in both months, creating a consistently humid atmosphere. For more detailed information on the weather during this period, visit San Juan La Laguna weather in August.

September and October weather in San Juan La Laguna exhibit some notable differences and similarities. 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 experiences higher precipitation of 358 mm (14.1 in) over 26 days and maintains a humidity level of 82%. By October, while the minimum and maximum temperatures remain similar, the average temperature drops slightly to 17°C (64°F), and precipitation decreases to 292 mm (11.5 in) over 27 days. Humidity rises to 83%, making October feel slightly more humid despite the lower average temperature. For a detailed view of weather specifics, you can explore San Juan La Laguna weather in October.

September weather is characterized by slightly warmer temperatures, with an average of 18°C (64°F) and maximums reaching 24°C (75°F). However, it also brings higher precipitation, totaling 358 mm (14.1 in) over 26 days, resulting in a humid environment with an average humidity of 82%. In contrast, November experiences a slight drop in temperature, with an average of 17°C (63°F) and similar maximums of 24°C (75°F). The significant difference lies in the much lower precipitation of 64 mm (2.5 in) over just 10 days, accompanied by a somewhat lower humidity of 80%. For more detailed insights on November's weather, you can check San Juan La Laguna weather in November.

In September, the weather is characterized by relatively mild temperatures, with a minimum of 12°C (54°F), an average of 18°C (64°F), and a maximum of 24°C (75°F). This month experiences significant rainfall, totaling 358 mm (14.1 in) over 26 days, along with high humidity levels at 82%. In contrast, December presents cooler conditions, featuring a minimum temperature of 8°C (47°F) and an average of 16°C (62°F), while still reaching the same maximum of 24°C (75°F). Precipitation in December is notably lower at just 22 mm (0.9 in) spread over only 5 days, and humidity decreases to 76%. For more details, you can check out San Juan La Laguna weather in December.

Compare San Juan La Laguna's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in San Juan La Laguna

As September unfolds in San Juan La Laguna, the weather distinctly shifts to a cooler and more humid climate, making it stand out from the drier months. With frequent rainfall over most days, this month experiences a remarkable increase in precipitation, enveloping the region in lush greenery and vibrant scenery. While temperatures remain mild, the combination of increased humidity and persistent showers creates a refreshing ambiance, perfect for soaking in the beauty of this lakeside paradise. To understand the year-round conditions in more detail, explore San Juan La Laguna Climate for a comprehensive view.