Last updated: August 21, 2025
In December, Retalhuleu, Guatemala, experiences a warm tropical climate, with maximum temperatures reaching up to 34°C (94°F) and an average temperature of 26°C (80°F), making it an inviting destination for those seeking warmth. The minimum temperature hovers around 19°C (67°F), providing pleasant evenings. This month, the region receives approximately 26 mm (1.0 in) of rainfall over six days, contributing to its lush greenery. With an average humidity of 76%, visitors can expect a slightly humid atmosphere, perfect for enjoying the vibrant landscapes and local culture.
In December, Retalhuleu, Guatemala experiences a pleasant climate characterized by a minimum temperature of 19°C (67°F), an average of 26°C (80°F), and a maximum of 34°C (94°F). As the year winds down, temperatures begin to dip slightly compared to the hotter months, offering a comfortable escape from the summer heat. The warmth remains inviting, especially with highs still reaching into the low 30s Celsius, making it an ideal time for outdoor activities and exploration. This trend indicates a gradual shift toward cooler evenings, while daytime warmth persists, creating a balanced and enjoyable atmosphere for both locals and visitors alike.
In Retalhuleu, Guatemala, December marks a notable transition in the precipitation pattern, with a total rainfall of 26 mm (1.0 in) spread over 6 days. While December's rainfall is relatively modest compared to the peak rainy months of May and September, it indicates a shift towards drier conditions as the year draws to a close. This month is characterized by a significant drop in precipitation days, contrasting sharply with the 31 days of rain experienced in May, the wettest month of the year. As the rainy season wanes, the overall precipitation trend suggests a gradual easing into the drier months ahead, making December a time for both reflection and anticipation of the upcoming dry season.
In Retalhuleu, Guatemala, December marks a continuation of the region's humid climate, with levels recorded at 76%. This figure is consistent with the trend observed in the preceding months, where humidity peaks during the latter part of the year. Notably, October and November experience the highest readings at 83% and 80%, respectively, suggesting a seasonal pattern where humidity escalates as the rainy season progresses. The decrease from the summer months, particularly August and September at 82%, reflects a gradual transition as the climate cools, yet retains a notable level of moisture. Overall, the December humidity figures illustrate that while the year winds down, the air remains distinctly rich and moist, characteristic of Central America's tropical ambiance.
In December, Retalhuleu, Guatemala, experiences a UV Index of 9, placing it in the very high exposure category. With a burn time of just 15 minutes, this month signals a slight relief from the extreme indices seen in previous months, where values reached as high as 14 in April. Throughout the year, Retalhuleu grapples with notably elevated UV levels, particularly from February to October, when indices remain consistently extreme. However, as December arrives, both the UV Index and burn time return to a level reminiscent of January and November, reminding residents and visitors alike to remain vigilant against sun exposure. For more insights into UV levels across the year, check out Retalhuleu UV Index.
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In Retalhuleu, Guatemala, December dazzles with a splendid 318 hours of sunshine, concluding the year on a bright note. This month stands out for its generous sunlight, showcasing a trend of consistently high sunshine hours in the latter half of the year. From July's 312 hours to November's 302 hours, the region enjoys a warm stretch of sun-kissed days that culminate in December's delightful display. Notably, month after month, the sunshine hours tend to exceed the less radiant early part of the year, which starts at 257 hours in January. As the days grow warmer and longer, Retalhuleu becomes a vibrant backdrop for holiday festivities, embodying the essence of a tropical paradise basking in golden sunlight.
In December, Retalhuleu, Guatemala, boasts an impressive 76% chance of sunny weather, making it one of the sunniest months of the year. This trend highlights a significant upward shift in sunshine compared to the rainy season, which peaks in the summer months with minimal sunshine - as low as 9% in June. As the year transitions from November's 57% to December’s livelier prospects, visitors can look forward to a bright and cheerful end to the year, contrasting sharply with the more overcast and rainy months that precede it. This seasonal variation emphasizes December's allure for those seeking warmth and sunshine in their holiday travels.
In Retalhuleu, Guatemala, the pattern of daylight duration reveals a fascinating rhythm throughout the year. December sees the daylight stretched to 11 hours, mirroring the shorter days of January and February. As spring emerges, the days gradually lengthen from March to August, reaching a peak of 12 hours during the mid-year months. After this zenith, daylight begins to shorten again, falling back to 11 hours in October and lingering through the close of the year. This cyclical trend offers a captivating glimpse into the seasonal transformations that shape the region's climate and daily life.
In Retalhuleu, Guatemala, the December winds gently embrace the city with an average speed of 1.3 m/s (3 mph), consistent with the mild breezes that characterize the region throughout the year. As the year winds down, the wind speeds reflect a slight uptick from the preceding months, maintaining a calm atmosphere that encourages outdoor activities. From the 1.1 m/s (2 mph) lows in October and November, the return to a summer-like breeze serves as a reminder of the region's steady climate. This transition hints at the stability in the area's weather patterns, where gentle winds persist, creating an inviting environment for both locals and visitors to enjoy the pleasant December air.
Weather in Retalhuleu varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Retalhuleu, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between December and January, it's clear that both months experience similar temperatures, with December slightly warmer at a maximum of 34°C (94°F) compared to January's 34°C (93°F). The minimum temperatures are also closely aligned, with December having a low of 19°C (67°F) and January a touch cooler at 18°C (65°F). Both months see comparable average temperatures, each averaging around 26°C (79°F). Precipitation levels are quite similar as well, with December receiving 26 mm (1.0 in) and January slightly less at 24 mm (1.0 in), both spread over six days. Interestingly, humidity remains constant at 76% for both months, making the overall atmosphere quite humid during this period. For more specific details on the weather patterns in January, you can check Retalhuleu weather in January.
December and February in Retalhuleu exhibit some similarities as well as notable differences in weather. December generally has slightly lower temperatures, with an average of 26°C (80°F) compared to February's average of 27°C (81°F). However, February tends to peak higher, reaching a maximum of 36°C (97°F), whereas December's max is 34°C (94°F). Additionally, December experiences more precipitation, with 26 mm (1.0 in) over six days, while February is drier, seeing only 18 mm (0.7 in) across three days. Humidity levels are also lower in February at 68%, compared to December's 76%. For more details, you can check Retalhuleu weather in February.
In December, the weather is generally warm with minimum temperatures around 19°C (67°F) and a comfortable average of 26°C (80°F), peaking at a maximum of 34°C (94°F). The month experiences moderate humidity at 76% and receives a total precipitation of 26 mm (1.0 in) over approximately 6 days. In contrast, March sees slightly higher temperatures with a minimum of 20°C (68°F) and an average of 28°C (82°F), reaching up to 36°C (96°F). However, it also brings increased rainfall, logging 44 mm (1.7 in) across about 10 days, and the air is notably less humid at 59%. For a more detailed look at the weather in March, check out Retalhuleu weather in March.
In comparing the weather of December and April, we see a notable shift in conditions. December typically enjoys temperatures ranging from a minimum of 19°C (67°F) to a comfortable maximum of 34°C (94°F), with an average of 26°C (80°F) and relatively low precipitation at 26 mm (1.0 in) over about 6 days. The humidity is quite high at 76%, contributing to a warmer feel.
In contrast, April experiences slightly warmer temperatures, with a minimum of 21°C (70°F) and reaching a maximum of 37°C (99°F), averaging around 28°C (83°F). However, this month also brings significantly more rainfall, totaling 105 mm (4.1 in) over approximately 17 days, and the humidity drops to a more comfortable 57%. For further details on the specific weather patterns of April, you can check Retalhuleu weather in April.
In December, the weather is warm with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 34°C (94°F), averaging around 26°C (80°F). The month sees relatively low precipitation, totaling 26 mm (1.0 in) over just 6 days, and maintains a humidity level of 76%. In contrast, May experiences a hotter climate, with temperatures starting at a minimum of 22°C (72°F) and peaking at a scorching 37°C (98°F), while the average temperature hovers around 27°C (81°F). However, May is significantly wetter, receiving 447 mm (17.6 in) of rain over 31 days, coupled with lower humidity levels at 65%. For a detailed look at May's weather patterns, you can check out Retalhuleu weather in May.
In December, the weather in Retalhuleu features temperatures ranging from a minimum of 19°C (67°F) to a maximum of 34°C (94°F), with an average temperature of 26°C (80°F). This month experiences relatively low precipitation, totaling 26 mm (1.0 in) over just 6 days, along with higher humidity levels at 76%.
In contrast, June presents a significantly different climate, with temperatures that start at a minimum of 22°C (72°F) and peak at 34°C (93°F), yielding a similar average temperature of 27°C (80°F). However, June is marked by much heavier rainfall, accumulating 373 mm (14.7 in) across 29 days, and lower humidity at 66%. For more specific details about the weather in June, you can visit Retalhuleu weather in June.
December and July in Retalhuleu present contrasting weather conditions. In December, the temperatures range from a mild 19°C (67°F) at night to a warm 34°C (94°F) during the day, with relatively low precipitation at 26 mm (1.0 in) over just six days, while humidity hovers around 76%. In contrast, July sees higher minimum temperatures of 21°C (71°F) and maintains an average of 27°C (81°F), but it is characterized by significantly heavier rainfall, accumulating 292 mm (11.5 in) over 26 days, with humidity levels slightly lower at 75%. For more details, you can check Retalhuleu weather in July.
December and August in Retalhuleu showcase distinctly different weather patterns. In December, temperatures range from a minimum of 19°C (67°F) to a maximum of 34°C (94°F), with an average of 26°C (80°F). The month receives relatively low precipitation of 26 mm (1.0 in) over just 6 days and has a humidity level of 76%. In contrast, August experiences a slightly higher temperature range, with minimums at 22°C (72°F) and maximums at 33°C (92°F), averaging 27°C (80°F). However, August is significantly wetter, receiving 362 mm (14.3 in) of rainfall over 29 days, accompanied by higher humidity at 82%. For a more detailed look at August's weather, check out Retalhuleu weather in August.
In comparing the weather between December and September, December tends to offer slightly more comfortable temperatures, with a minimum of 19°C (67°F) and a maximum of 34°C (94°F), while September's temperatures range from a minimum of 21°C (71°F) to the same maximum. Both months feature an average temperature of 26°C (80°F). However, September is characterized by significantly heavier rainfall, measuring 418 mm (16.5 in) over 29 days, compared to December's much lighter 26 mm (1.0 in) over only 6 days. Additionally, humidity levels are slightly higher in September at 82%, compared to December's 76%. For more details, check out Retalhuleu weather in September.
When comparing the weather in December and October, December tends to be cooler and significantly drier. In December, temperatures range from a minimum of 19°C (67°F) to a maximum of 34°C (94°F), with an average temperature of 26°C (80°F) and only 26 mm (1.0 in) of precipitation over about 6 days. In contrast, October is warmer, with temperatures ranging from 22°C (71°F) to 33°C (92°F) and an average of 26°C (79°F). October experiences heavy rainfall, accumulating 378 mm (14.9 in) over 29 days, leading to higher humidity at 83%. For more detailed insights on October weather, you can refer to Retalhuleu weather in October.
In comparing the weather of December and November, December experiences slightly cooler temperatures, with a minimum of 19°C (67°F) compared to November's 21°C (69°F). The average temperature remains consistent at 26°C (80°F), while both months reach a maximum of 34°C (93°F) to 34°C (94°F) in December. However, December is notably drier, with only 26 mm (1.0 in) of precipitation over six days, in contrast to November's heavier rainfall of 106 mm (4.2 in) spread across 14 days. Humidity levels are also lower in December at 76% compared to November's 80%. For more detailed information, check Retalhuleu weather in November.
As December rolls in, Retalhuleu experiences a pleasant transformation from the warmer months. With an average temperature of around 26°C (80°F), the weather is notably milder than in previous months. Though there is a slight uptick in humidity at 76%, the overall climate remains comfortable for outdoor activities. December sees an increase in precipitation, with rain making an appearance on about 6 days and accumulating to 26 mm (1.0 in), a welcome relief from the dryness of the earlier months. For a deeper dive into the weather patterns that define this charming region, visit Retalhuleu Climate.