Last updated: August 31, 2025
April in Guaynabo, Puerto Rico presents a delightful tropical climate characterized by warm temperatures and frequent rainfall. The month sees maximum temperatures peaking at 30°C (86°F), while the average temperature remains a comfortable 25°C (77°F), and the minimum dips to a pleasant 21°C (70°F). With an average of 77 mm (3.0 in) of precipitation over 20 days, residents and visitors can expect a lush, vibrant environment; however, the humidity level also hovers around 75%, adding to the tropical feel. This blend of warmth and moisture creates an inviting atmosphere perfect for exploring the lush landscapes and rich culture of the region.
In April, Guaynabo, Puerto Rico, ushers in a gentle warmth, with temperatures reflecting the approach of summer. The minimum temperature rises slightly to 21°C (70°F), while the average temperature nudges up to 25°C (77°F), indicating a gradual shift from the milder months of winter and early spring. As the days lengthen, the maximum temperature also climbs to an inviting 30°C (86°F), making it a perfect time for outdoor adventures. This trend of increasing warmth from the previous months signals that nature is in full bloom, inviting residents and visitors alike to enjoy the vibrant landscapes under the bright Caribbean sun.
In April, Guaynabo, Puerto Rico experiences a moderate rainfall, with a total precipitation of 77 mm (3.0 in) spread over 20 days. This marks a slight decrease from the previous month of March, which recorded 80 mm (3.2 in) over a greater number of days. As the region transitions into the warmer months, precipitation begins to increase significantly, foreshadowing the wetter conditions of May and June ahead. Notably, April serves as a bridge in the seasonal shift, showcasing a blend of lingering cooler weather with frequent light rains, yet also hinting at the more intense downpours to come later in the spring and summer.
In April, Guaynabo, Puerto Rico, experiences a slight uptick in humidity at 75%, maintaining the steady level observed since January. This month marks a transition period, as the humidity hovers around the mid-seventies, nicely bridging the cooler early months of the year with the warmer, more humid conditions that approach in the summer. As we move into May and June, humidity begins to rise, peaking in the summer months of July and August at a notable 80%. Overall, April serves as a pivotal point in Guaynabo's humidity trends, reflecting the region's tropical climate and setting the stage for the sweltering heat of summer.
In April, Guaynabo, Puerto Rico, continues the trend of extremely high UV exposure, with a UV Index of 13 that persists from the previous months. This level of intensity means you should be cautious, as the burn time is a mere 10 minutes for unprotected skin. As temperatures rise into the summer months, the UV Index in Guaynabo is likely to remain in this extreme category, peaking at 14 in May before fluctuating slightly throughout the summer. With consistent monitoring of the UV Index, you can better plan your outdoor activities. For detailed information and updates, visit Guaynabo UV Index.
UV Risk Categories
April in Guaynabo, Puerto Rico, baskes in 346 hours of glorious sunshine, seamlessly mirroring the bright, spring days of March. This trend of consistent sunlight continues into May, where the days stretch slightly longer to 356 hours, marking the peak of the season. Interestingly, as spring transitions into summer, the sunshine hours remain robust, maintaining a captivating allure with 343 hours in June and 353 hours in July. While April stands out for its vibrant weather, the month also highlights a pattern of increasing light as the year progresses, setting the stage for sun-soaked adventures in this Caribbean paradise.
In April, Guaynabo, Puerto Rico experiences a 43% chance of sunny weather, marking a noticeable decline from the sunnier months of February and March, which boast 65% and 60% sunshine, respectively. This dip suggests that as spring unfolds, residents and visitors alike should prepare for a mix of sun and occasional clouds. While April may not shine as brightly as its preceding months, it still offers more sunny days than the summer months of June, July, and August, which see lower probabilities of sunshine at 20%, 38%, and 37%. As the year progresses, the chance of sunny weather tends to fluctuate, but April's moderate sunshine signals a comfortable transition before the hotter days of summer take hold.
As April arrives in Guaynabo, Puerto Rico, residents enjoy 12 hours of daylight, a continuation of the upward trend observed in March. This consistent daylight duration signals the approach of summer, setting the stage for longer, sun-kissed days ahead. Following April, daylight remains steady at 12 hours in May and 13 hours from June through July, before gently tapering off again in August. The gradual increase during the first half of the year underscores the tropical charm of Puerto Rico, where the sun graces the skies with warmth and light, enhancing the beauty of everyday life.
April brings a gentle breeze to Guaynabo, Puerto Rico, with an average wind speed of 2.9 m/s (6 mph), marking a slight dip from the invigorating winds of March. This month often serves as a transition, as the winds begin to pick up again in May, returning to an average of 3.4 m/s (8 mph). Notably, April's winds are among the calmer ones of the year, reflecting a serene spring atmosphere. As the weather warms and the lush surroundings come alive, this period provides a perfect balance of comfortable temperatures and mild winds, making it an ideal time for outdoor activities. Observing the trend, the winds in Guaynabo generally fluctuate throughout the year, peaking in the summer months, yet April's softer gusts create a unique charm that captures the essence of the season.
Weather in Guaynabo varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Guaynabo, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in April and January, April tends to be slightly warmer and wetter. In April, temperatures range from a minimum of 21°C (70°F) to a maximum of 30°C (86°F), with an average temperature of 25°C (77°F). The month sees about 77 mm (3.0 in) of precipitation over approximately 20 days, contributing to a humidity level of 75%. In contrast, January features milder temperatures, with a minimum of 19°C (66°F) and a maximum of 29°C (84°F), and an average of 24°C (76°F). January also experiences less rainfall, with 48 mm (1.9 in) over 16 days, maintaining a humidity level of 76%. For more details, you can check Guaynabo weather in January.
In comparing the weather of April and February, we see that April tends to be slightly warmer, with average temperatures reaching 25°C (77°F) compared to February's 24°C (75°F). While both months experience similar humidity levels at 75%, April has slightly higher maximum temperatures of 30°C (86°F) versus February’s 28°C (83°F). However, April also sees more precipitation, with 77 mm (3.0 in) over about 20 days, which is higher than February's 53 mm (2.1 in) across 18 days. For more details on February weather, you can check this link: Guaynabo weather in February.
April presents slightly warmer weather compared to March, with average temperatures increasing from 24°C (76°F) to 25°C (77°F). The maximum temperatures are also marginally higher, reaching up to 30°C (86°F) in April, compared to 29°C (85°F) in March. Both months experience frequent rainfall, though April sees a slight decrease in total precipitation at 77 mm (3.0 in) over 20 days, compared to March’s 80 mm (3.2 in) over 21 days. Humidity levels remain comparable, with March at 74% and April slightly higher at 75%. For more details on the weather, you can check out Guaynabo weather in March.
In April, temperatures range from a minimum of 21°C (70°F) to a maximum of 30°C (86°F), with an average of 25°C (77°F). The month experiences 77 mm (3.0 in) of precipitation over 20 days, maintaining a humidity level of 75%. In contrast, May brings slightly warmer temperatures, with a minimum of 22°C (72°F) and a maximum of 31°C (87°F), resulting in an average of 26°C (79°F). However, May is also wetter, with 98 mm (3.9 in) of precipitation over 24 days, while humidity remains steady at 75%. For more detailed information about the weather in May, visit Guaynabo weather in May.
In comparing the weather of April and June, we see that June tends to be slightly warmer, with average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 31°C (88°F), compared to April's 21°C (70°F) minimum and 30°C (86°F) maximum. While both months experience considerable humidity, June exhibits a marginal increase to 77% compared to April's 75%. Precipitation is also more substantial in June, with total rainfall reaching 99 mm (3.9 in) over 23 days, as opposed to April's 77 mm (3.0 in) across 20 days. For more detailed insights, you can check out Guaynabo weather in June.
In comparing the weather between April and July, we see notable differences in temperature and precipitation. April typically experiences a minimum of 21°C (70°F) and an average of 25°C (77°F), peaking at 30°C (86°F), along with 77 mm (3.0 in) of rainfall over about 20 days. In contrast, July is slightly warmer, with minimum temperatures around 23°C (74°F) and an average of 27°C (81°F), reaching up to 31°C (88°F). Additionally, July is wetter, receiving 124 mm (4.9 in) of precipitation across 24 days and exhibiting higher humidity levels at 80%. For more details on the specific weather characteristics of July, you can check out Guaynabo weather in July.
When comparing the weather in April and August, several key differences emerge. April experiences slightly lower temperatures, with a minimum of 21°C (70°F) and an average of 25°C (77°F), while August heats up with minimum temperatures starting at 23°C (74°F) and averaging 27°C (81°F). Precipitation levels also rise significantly in August, with 130 mm (5.1 in) of rain expected over 25 days, compared to April's 77 mm (3.0 in) over 20 days. Additionally, August boasts a higher humidity level at 80%, making it feel more oppressive than April's 75%. For more detailed weather insights, check this link: Guaynabo weather in August.
April and September present distinct weather patterns, showcasing the transition of seasons. In April, temperatures range from a mild 21°C (70°F) to a warm 30°C (86°F), with an average of 25°C (77°F). The month sees about 77 mm (3.0 in) of rainfall over approximately 20 days, combined with a humidity level of 75%. In contrast, September experiences slightly higher temperatures, with minimums of 23°C (74°F) and maximums reaching 32°C (90°F), averaging at 27°C (81°F). This month is wetter, receiving around 200 mm (7.9 in) of rain over 27 days, alongside a higher humidity of 79%. For more detailed insights, check out Guaynabo weather in September.
April and October exhibit warm temperatures, with October being marginally warmer. In April, temperatures range from a minimum of 21°C (70°F) to a maximum of 30°C (86°F), averaging around 25°C (77°F). In contrast, October temperatures start at 23°C (74°F) and peak at 31°C (88°F), averaging 27°C (80°F). Precipitation in October is significantly higher, with 183 mm (7.2 in) over 27 days, compared to April’s 77 mm (3.0 in) over 20 days. Both months have high humidity levels, but October is slightly more humid at 78% compared to April’s 75%. For more specific insights, you can explore Guaynabo weather in October.
April and November in Guaynabo exhibit relatively similar warm temperatures, with both months experiencing average highs around 30°C (86°F). April has a slight edge in terms of lower humidity and precipitation, with monthly rainfall at 77 mm (3.0 in) and 20 days of precipitation, compared to November’s 120 mm (4.7 in) and 23 days of rain. While April enjoys an average temperature of 25°C (77°F), November's average reaches 26°C (79°F), making it just a touch warmer. For those interested in more detailed weather information, you can check out Guaynabo weather in November.
In both April and December, the weather experiences similar temperature patterns, with minimums around 21°C (70°F), averages at 25°C (77°F), and maximums reaching 30°C (86°F). However, April tends to be slightly wetter, receiving 77 mm (3.0 in) of precipitation over 20 days compared to December's 66 mm (2.6 in) over 22 days. Humidity levels are comparable, with April recording 75% and December at 76%, creating a consistently humid atmosphere throughout both months. For more detailed insights, you can check out Guaynabo weather in December.
As April unfolds in Guaynabo, the weather shifts to a warmer embrace, with temperatures hovering around a comfortable 25°C (77°F) and peaking at a toasty 30°C (86°F). While humidity remains consistent at 75%, this month stands out for its notable precipitation, featuring rain on 20 days, totaling 77 mm (3.0 in). Compared to the drier months preceding it, April marks a transition into the lush vibrancy of spring, characterized by frequent showers that nurture the landscape. If you want to explore more about the distinct weather patterns throughout the year, be sure to check out Guaynabo Climate.