Last updated: August 31, 2025
October in Guaynabo, Puerto Rico is characterized by warm temperatures and significant rainfall. The maximum temperature reaches around 31°C (88°F), while the average temperature hovers at 27°C (80°F), providing a tropical climate ideal for exploring the region. With a minimum temperature of 23°C (74°F), the evenings remain pleasantly warm. This month witnesses substantial precipitation, with an average of 183 mm (7.2 in) spread over approximately 27 days, making it one of the wetter months of the year. Humidity levels are high at 78%, contributing to the lush landscapes typical of this Caribbean paradise. Whether you're planning outdoor activities or seeking refuge from the rain, October offers a unique experience in Guaynabo.
In Guaynabo, Puerto Rico, October brings a delightful blend of warmth and humidity, with temperatures ranging from a minimum of 23°C (74°F) to a comfortable average of 27°C (80°F) and reaching a peak of 31°C (88°F). This month marks a subtle transition as the island begins to edge away from the scorching highs of summer, yet retains the tropical essence that defines its climate. The consistent patterns in temperature show that while the evenings remain pleasantly warm, the daytime heat is tempered just enough to provide a pleasant experience for residents and visitors alike. As the average temperature begins to dip slightly from the peak summer months, October in Guaynabo offers the perfect backdrop for outdoor activities and beach outings, making it a wonderful time to enjoy the vibrant beauty of Puerto Rico.
In October, Guaynabo, Puerto Rico, experiences significant rainfall, with an average precipitation of 183 mm (7.2 in) spread across 27 rainy days. This month maintains the trend of increased precipitation seen in September, which had the highest total at 200 mm (7.9 in). The amount of rainfall in October is notably high, following the peak of the wet season, reflecting the region's tropical climate and propensity for storms. As the island transitions into November, precipitation begins to decline, underscoring the cyclical nature of the weather patterns in this lush locale. This month, with its frequent showers, is vital for replenishing the ecosystem and sustaining the vibrant flora and fauna of the area.
October in Guaynabo, Puerto Rico, usually sees a notable humidity level of 78%, reflecting a slight dip from the peak of summer. As the region transitions from the sweltering heights of July and August, which both register at 80%, October offers a milder yet humid atmosphere. Interestingly, the humidity levels show a trend of maintaining a consistent range throughout the year, fluctuating only slightly from 74% in March to 80% in July and August. This means that even in the calmer autumn months, Guaynabo retains its tropical essence, ensuring that the air remains rich and vibrant.
In October, Guaynabo, Puerto Rico experiences a UV Index of 12, categorizing it as extreme, with a burn time of just 10 minutes. This trend of high UV exposure remains consistent from the peak in May at UV Index 14 to this month, highlighting the importance of protecting your skin from harmful rays throughout the year. Interestingly, while the UV levels see a slight decrease in October compared to the summer months, the potential for skin damage remains significant, mirroring the general climate of Puerto Rico where high UV levels are a norm. To stay protected, residents and visitors should remain vigilant, using sunscreen and wearing protective clothing whenever outdoors. For more detailed information, visit Guaynabo UV Index.
UV Risk Categories
October in Guaynabo, Puerto Rico, offers a delightful continuation of the region's sunny charm, boasting 313 hours of sunshine. This month reflects a dip compared to the vibrant peak of May with its impressive 356 hours, yet it maintains a strong footing alongside September's similar total. As the year transitions into the cooler months, the sunshine gradually recedes, evident in the slight decreases through November and December. However, October still shines brightly, embodying the warmth of Puerto Rico just before the slight cloud cover of the late fall, making it an inviting time for outdoor activities and exploring the enchanting landscape.
In October, Guaynabo, Puerto Rico enjoys a 44% chance of sunny weather, making it one of the more balanced months for sunshine compared to the rest of the year. Notably, this figure aligns closely with both September and April, suggesting a transitional period as the island approaches the more typically drier months of November and December, which boast higher probabilities of clear skies at 55% and 58%, respectively. While October's sunny outlook may not rival the brighter days of February (65%) or March (60%), it still offers a pleasant mix of sun and occasional rain, ideal for outdoor activities amidst the tail end of the rainy season.
In Guaynabo, Puerto Rico, October ushers in a return to shorter days, with 11 hours of daylight mirroring the lengths of January and February. This month marks a gradual shift as the vibrant, lengthy days of summer, which peak at 13 hours in June and July, begin to wane. Interestingly, the daylight duration remains consistent from August through September, before dipping back to 12 hours in both April and May. As the year progresses, October serves as a reminder that while long days may fade, the warmth and beauty of Puerto Rico remain constant, bridging the transition into the cooler months of November and December.
As October approaches in Guaynabo, Puerto Rico, the gentle winds begin to shift, registering an average speed of 2.6 m/s (6 mph). This slight increase from September's calmer 2.4 m/s (5 mph) marks a transition towards the end of the wet season, as the breeze carries with it a hint of the refreshing coolness that heralds the onset of fall. Historically, October's winds are more subdued compared to the lively gusts of summer, peaking in July at 4.0 m/s (9 mph). The environment during this month is defined by soft breezes, creating a serene atmosphere perfect for outdoor activities while also inviting a sense of calm as the year starts to wind down. Overall, October's winds offer a soothing transition that beautifully complements the island's vibrant tropical landscape.
Weather in Guaynabo varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Guaynabo, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison to January, October features significantly warmer temperatures, with an average of 27°C (80°F), peaking at 31°C (88°F), while January’s temperatures are milder, averaging 24°C (76°F) and maxing out at 29°C (84°F). Moreover, October is notably wetter, receiving 183 mm (7.2 in) of precipitation across 27 days, in contrast to January’s relatively dry conditions with only 48 mm (1.9 in) over 16 days. Humidity levels are fairly close, with October at 78% and January at 76%, but the overall atmosphere feels much more humid in October due to the increased rainfall. For a more detailed look at January weather specifics, visit Guaynabo weather in January.
October and February present distinct weather patterns, characterized by differences in temperature and precipitation. In October, temperatures range from a minimum of 23°C (74°F) to a maximum of 31°C (88°F), with a higher average of 27°C (80°F). The month is also marked by significant rainfall, receiving 183 mm (7.2 in) over 27 days, contributing to a humidity level of 78%. In contrast, February features milder temperatures, with a minimum of 20°C (69°F) and a maximum of 28°C (83°F), alongside a lower average of 24°C (75°F). This month sees much less precipitation, totaling 53 mm (2.1 in) over 18 days and a slightly lower humidity of 75%. For more detailed information, you can check Guaynabo weather in February.
When comparing the weather in October and March, October is generally warmer and wetter. October experiences a minimum temperature of 23°C (74°F) and averages 27°C (80°F), peaking at a maximum of 31°C (88°F). In contrast, March has slightly cooler temperatures, with a minimum of 20°C (69°F), an average of 24°C (76°F), and a maximum of 29°C (85°F). Precipitation is notably higher in October, reaching 183 mm (7.2 in) over 27 days, compared to March's 80 mm (3.2 in) over just 21 days. Humidity remains elevated in both months, but October is a touch higher at 78%, while March sits at 74%. For more detailed information, you can check Guaynabo weather in March.
When comparing the weather in October to that in April, we see notable differences in temperature and precipitation patterns. October tends to be warmer, with average temperatures around 27°C (80°F) and maximums reaching up to 31°C (88°F). In contrast, April's average sits at 25°C (77°F), with highs of 30°C (86°F). Additionally, October experiences significantly more rainfall, totaling 183 mm (7.2 inches) over about 27 days, compared to April’s 77 mm (3.0 inches) over 20 days. Humidity levels are also slightly higher in October at 78%, while April maintains a comfortable 75%. For a more detailed look at April weather specifically, check out Guaynabo weather in April.
When comparing the weather in October and May, we notice some distinct differences. October features slightly warmer average temperatures, with a minimum of 23°C (74°F) and a maximum of 31°C (88°F), while May has a minimum of 22°C (72°F) and a slightly lower maximum of 31°C (87°F). October is characterized by significantly higher precipitation, totaling 183 mm (7.2 in) across 27 days, compared to May's 98 mm (3.9 in) over 24 days. Additionally, October tends to be a bit more humid, with levels around 78%, whereas May's humidity is slightly lower at 75%. For a more detailed look at the weather in May, you can visit Guaynabo weather in May.
In October, the weather shares similarities with June, as both months feature a minimum temperature of 23°C (74°F), an average of 27°C (80°F), and a maximum of 31°C (88°F). However, October tends to be much rainier, receiving 183 mm (7.2 in) of precipitation over 27 days, compared to June's 99 mm (3.9 in) spread across 23 days. The humidity is slightly higher in October at 78%, compared to June's 77%. For more detailed insights, refer to the information available at Guaynabo weather in June.
When comparing the weather in October and July, both months exhibit similar temperature patterns, with minimums around 23°C (74°F), average highs of 27°C (81°F), and maximums reaching up to 31°C (88°F). However, October tends to be wetter, receiving an average of 183 mm (7.2 in) of precipitation across 27 days, compared to July's 124 mm (4.9 in) over 24 days. Additionally, while humidity levels are slightly higher in October at 78%, July maintains a close figure of 80%. For more detailed information on July weather specifically, you can check out Guaynabo weather in July.
In comparing the weather of October and August, both months feature similar temperature ranges, with minimums around 23°C (74°F), average highs close to 27°C (81°F), and maximums reaching approximately 31°C (89°F). However, October tends to be wetter, recording an average of 183 mm (7.2 inches) of precipitation over 27 days, compared to August's 130 mm (5.1 inches) over 25 days. Despite similar temperatures, October’s humidity is slightly lower at 78%, while August maintains a higher level of 80%. For more detailed insights into August weather, you can visit Guaynabo weather in August.
In comparing the weather of October and September, both months maintain similar temperature ranges, with October experiencing a minimum of 23°C (74°F) and an average of 27°C (80°F), while September has a slightly higher maximum at 32°C (90°F). Precipitation levels are also noteworthy, as October sees 183 mm (7.2 in) of rain over 27 days, slightly less than September's 200 mm (7.9 in) during the same number of days. Humidity levels remain comparable, with October at 78% and September at 79%. For more detailed insights into September's weather, you can visit Guaynabo weather in September.
When comparing the weather between October and November, we see that both months experience relatively warm temperatures, with October having slightly higher averages. In October, temperatures range from a minimum of 23°C (74°F) to a maximum of 31°C (88°F), while in November, the range is from 22°C (72°F) to 30°C (86°F). October also sees more precipitation, with 183 mm (7.2 in) over 27 days, compared to November's 120 mm (4.7 in) over 23 days. However, both months maintain a consistent humidity level of 78%. For more detailed insights, you can check out Guaynabo weather in November.
In October, the weather is generally warmer with minimum temperatures around 23°C (74°F) and averaging 27°C (80°F), peaking at 31°C (88°F). This month experiences significant rainfall, with a total precipitation of 183 mm (7.2 in) spread over 27 days, resulting in high humidity levels averaging 78%. In contrast, December sees slightly cooler temperatures, with a minimum of 21°C (71°F) and an average of 25°C (77°F), reaching a maximum of 30°C (86°F). The rainfall is considerably less, totaling only 66 mm (2.6 in) over 22 days, and humidity decreases modestly to 76%. For a more detailed overview of December weather, check out Guaynabo weather in December.
As October unfolds in Guaynabo, it brings a distinct shift in weather patterns compared to the drier months of the year. The average temperature remains warm, hovering around 27°C, but the increased humidity levels, reaching 78%, combined with 183 mm of rainfall across nearly 27 days, create a notably soggy atmosphere. This blend of warmth and moisture makes October one of the wettest months, thus setting it apart from the dryer and cooler months that precede it. For more detailed insights into weather patterns throughout the year, check out Guaynabo Climate.