Last updated: January 18, 2025
Retalhuleu, Guatemala, boasts a tropical savanna climate classified under the Köppen-Geiger system as Aw. This region experiences a striking temperature range, with minimums dipping to 17°C (63°F) in January, an average of around 26°C (80°F) throughout the year, and peak summer temperatures soaring to 37°C (99°F) in April. The warm and inviting climate contributes to Retalhuleu's rich biodiversity and vibrant ecosystems, making it a fascinating subject for climate studies.
In Retalhuleu, Guatemala, temperature patterns exhibit a distinct seasonal trend characterized by warmth and stability throughout the year. The coolest months, January and February, see minimum temperatures around 17°C (63°F) and average highs reaching up to 36°C (97°F). As the region transitions into April and May, temperatures gradually rise, with maxima hitting 37°C (99°F) while minimums increase to 19-21°C (66-70°F). The summer months from June to August experience consistent averages of approximately 26-27°C (79-80°F), with maximums peaking at 34°C (93°F). As the year concludes, temperatures slightly cool down, with December recording minimums of 18°C (64°F) and consistent averages hovering around 26°C (79°F). Overall, Retalhuleu maintains a warm tropical climate, with only subtle variations across the seasons.
In Retalhuleu, the climate showcases a range of temperatures throughout the year, with a minimum of 18°C (65°F) in January, rising to a maximum of 37°C (99°F) in April. For more detailed insights on the monthly temperatures, you can visit monthly temperatures in Retalhuleu.
Retalhuleu, Guatemala, experiences a pronounced tropical wet season characterized by substantial rainfall from April to October. In April, precipitation begins to surge, with 117 mm (4.6 in) over 17 days, paving the way for the commencement of the rainy season. The peak occurs in May, where an impressive 463 mm (18.2 in) fall over an entire month, leading to nearly daily rainfall. This trend continues into the following months, with June and July receiving significant rainfall amounts of 397 mm (15.6 in) and 313 mm (12.3 in), respectively, emphasizing the dramatic increase in precipitation typical of this climate zone.
As the season progresses, rainfall remains substantial, with August and September seeing 375 mm (14.8 in) and 443 mm (17.4 in), respectively. Although precipitation begins to wane in October with 445 mm (17.5 in), the wet season still exerts a strong influence, resulting in heavy rains persisting with 29 rainy days. By the end of the year, rainfall decreases significantly, with January and February receiving only 28 mm (1.1 in) and 19 mm (0.7 in) across merely 6 and 4 rainy days, marking a transition to the drier months ahead.
In Retalhuleu, Guatemala, the duration of sunshine exhibits a clear seasonal trend, reflecting the region's tropical climate. The year begins with 257 hours of sunshine in January, gradually increasing as temperatures rise and winter transitions to summer. By March, sunshine hours peak at 322 hours, closely followed by 315 hours in April and 310 hours in May. This period marks the height of the dry season, where residents and visitors alike can enjoy extended hours of sunlight, making it an optimal time for outdoor activities and agriculture.
As the rainy season approaches in June, sunshine hours slightly decline to 280 hours, before experiencing a modest recovery in July with 312 hours. However, the subsequent months see a gradual reduction, with September recording only 281 hours of sun, indicating a shift towards cloudier and rainier conditions. While the later months of October and November maintain similar sunshine levels at around 278-302 hours, December witnesses an increase to 318 hours, providing a bright finish to the year. Overall, the sunshine duration in Retalhuleu reinforces the vibrant rhythms of its tropical climate, peaking during the dry months and reflecting a dynamic interplay between sunshine and precipitation.
The UV Index in Retalhuleu, Guatemala, demonstrates a significant variation throughout the year, with levels generally classified as very high to extreme. January kicks off the year with a UV Index of 10, signifying very high levels of ultraviolet radiation, which narrows the burn time to 15 minutes for sensitive skin. As February rolls in, the UV Index surges to 11, and by March, it reaches an intense 13. April sees the peak at 14, indicating extreme caution is needed, as the burn time reduces to just 10 minutes. This trend of high UV exposure continues through the summer months, with the Index stabilizing at 13 from May to September, emphasizing the importance of sun protection during this period.
As the year transitions into the fall, the UV Index slightly declines but remains in the extreme range. October records a UV Index of 12, followed by November and December, where the Index drops to 10 and 9, respectively, reflecting very high exposure levels. Despite this reduction, the burn time remains critically low at 15 minutes for sensitive skin in November and 15 minutes in December, underscoring the need for consistent sun protection year-round. Overall, the data highlights Retalhuleu's intense UV conditions, prompting residents and visitors to prioritize skin safety, particularly from late winter through the summer.
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In Retalhuleu, Guatemala, daylight duration exhibits a relatively stable pattern throughout the year, reflective of its tropical latitude. The year begins with 11 hours of daylight in both January and February, providing a consistent and balanced amount of light during the cooler months. As the days transition into March, daylight increases slightly to 12 hours, and this duration remains steady through April, May, and extending into the summer months. This consistency allows for ample time for outdoor activities and agricultural practices, crucial to the region's economy and lifestyle.
As the year progresses into late summer and fall, daylight duration begins to taper off, returning to 11 hours in October, which then continues through November and December. This decrease is minor yet noticeable, aligning with the onset of the drier season. Overall, the stable daylight hours in Retalhuleu emphasize a tropical climate that supports biodiversity and community activities throughout the year, ensuring that both residents and visitors can enjoy the region’s vibrant environment with plenty of sunlight.
Retalhuleu, Guatemala, experiences a tropical climate with warm temperatures year-round, ranging from a minimum of 18°C in January to a peak of 37°C in April and May. The region sees the most rainfall from May to September, with May recording 447 mm (17.6 in) of precipitation, while the driest months are January and February with just 24 mm (1.0 in) and 18 mm (0.7 in), respectively. Sunshine is abundant, peaking in March with 322 hours, and remaining relatively high throughout the year, promoting a vibrant atmosphere. For more detailed information, visit Retalhuleu climate.
In conclusion, Retalhuleu, Guatemala, presents a compelling climate characterized by its warm temperatures, distinct rainy seasons, high UV index, and stable daylight duration. The region experiences significant rainfall from April to October, shaping its lush landscapes and supporting a rich biodiversity. With elevated UV levels prevailing from January through September, residents and visitors alike must prioritize sun protection to mitigate health risks. The relatively consistent daylight hours, ranging from 11 to 12 hours throughout the year, further enhance the locale's appeal for agriculture and outdoor activities. Overall, understanding the climate dynamics of Retalhuleu is essential for embracing its natural beauty and ensuring a sustainable interaction with its environment.