September Weather in Runaway Bay, Jamaica

Last updated: August 21, 2025

Experience the vibrant climate of Runaway Bay, Jamaica in September, where temperatures reach a warm maximum of 33°C (91°F), with a comforting average of 27°C (82°F) and a pleasant minimum of 24°C (75°F). This month is characterized by frequent rainfall, with an average precipitation of 165 mm (6.5 in) spread over 21 days, resulting in a humidity level of 75% that enhances the lush, tropical atmosphere. Ideal for those seeking both warmth and a lush landscape, September offers a unique blend of sunshine and refreshing rain, perfect for adventurous travelers and relaxation seekers alike.

September Temperature in Runaway Bay

In September, temperatures in Runaway Bay, Jamaica continue to embody the warmth of summer, with minimums resting at a comfortable 24°C (75°F) and averages around 27°C (82°F). As the month progresses, the maximums peak at a generous 33°C (91°F), mirroring the highs seen in July and August. This consistency highlights a trend of tropical warmth that characterizes the region during late summer, making September an inviting time for sun-seekers and beach lovers alike. With balmy evenings and plenty of sunshine, it's an ideal month to soak in everything this Caribbean paradise has to offer.

September Weather in Runaway Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Runaway Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Runaway Bay, 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).
JanFebMarAprMayJunJulAugSepOctNovDec767676788081828281807877
Data source: Temperature data for Runaway Bay 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 Runaway Bay

In September, Runaway Bay, Jamaica, experiences a significant upsurge in precipitation, with 165 mm (6.5 in) of rainfall recorded over 21 days—the highest monthly total of the year. This dramatic increase follows the wetter months of May, August, and is a precursor to even heftier October rains, which average 182 mm (7.1 in) over 24 days. Such patterns highlight September as a pivotal month in Jamaica's wet season, where the lush landscapes truly come alive, offering a vibrant contrast to the drier spells earlier in the year. As summer transitions to fall, visitors can expect improved greenery, enhanced scenery, but should also be prepared for frequent, though often brief, showers.

September Precipitation Trends in Runaway Bay

The chart displays monthly precipitation patterns in Runaway Bay, 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 Runaway Bay, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec6838838513665709216518214386
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Runaway Bay

In Runaway Bay, Jamaica, September brings a notable humidity level of 75%, which, while slightly lower than the peak of 76% experienced in August, remains among the highest figures of the year. The trend in humidity from January to September reveals a gradual increase, with the months of July and August showcasing a significant rise as summer peaks. Following September, the humidity holds steady into October before climbing again in November to 77%, hinting at a more saturated atmosphere as the wet season progresses. Overall, the humidity in September, though slightly elevated, reflects the tropical climate's characteristic warmth and stickiness, setting the stage for the lush landscape Jamaica is known for.

September Average Humidity in Runaway Bay

This chart illustrates the average monthly humidity levels in Runaway Bay, 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 Runaway Bay is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%67%66%66%64%66%73%76%75%75%77%73%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Runaway Bay

In September, Runaway Bay, Jamaica, showcases a consistent UV Index of 13, categorized as extreme, which means sun exposure can lead to skin damage in just 10 minutes. Following the tropical pattern seen from April through August, where UV levels remained high, September continues the trend, urging beachgoers and outdoor enthusiasts to be extra cautious under the blazing sun. This time of year emphasizes the importance of protective measures, especially as October slightly dips to an index of 12, still in the extreme range. With such persistent UV readings, residents and visitors alike should stay informed about sun safety guidelines to enjoy the vibrant Caribbean atmosphere while minimizing risk. For more details on the UV Index throughout the year, check out Runaway Bay UV Index.

Maximum UV Index Levels in Runaway Bay for September

The chart shows the monthly maximum UV Index (UVI) for Runaway Bay 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 Runaway Bay typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131413131313131298
Data source: Runaway Bay 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 Runaway Bay

As September unfolds in Runaway Bay, Jamaica, the island basks in a generous 317 hours of sunshine, continuing the trend of warm, radiant days that peaked during the summer months. This delightful month follows a vibrant August with 338 hours of sunshine, showcasing a slight dip yet still maintaining an inviting glow for beach-goers and adventurers alike. Historically, September offers a soothing transition from the intense brightness of July and August, where the sun reaches its zenith, each month revealing a gradual yet consistent pattern of delightful weather. With its enviable balance of warmth and light, September stands out as a gem in the Jamaican calendar, promising visitors both relaxation and enchantment under its sunny skies.

Monthly Sunshine Duration in Runaway Bay: September Highlighted

The September sunshine duration represents the total number of hours Runaway Bay 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.
JanFebMarAprMayJunJulAugSepOctNovDec244h300h341h341h328h334h349h338h317h303h288h308h
Data source: Runaway Bay September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Runaway Bay During September

In Runaway Bay, Jamaica, the likelihood of sunny weather sees some intriguing fluctuations throughout the year. As summer makes its gradual exit, September offers a 52% chance of sunshine, positioning it comfortably above the average for the later summer months of June (43%) and August (43%). Interestingly, this marks a slight uptick from the 49% in July, indicating a pleasant transition into fall. While not as reliable as the sun-soaked mid-winter months, September promises more sunny days than the subsequent months, creating an ideal backdrop for those seeking a warm escape as tropical temperatures linger. This serene setting amidst the ebbing summer is perfect for adventurers and relaxation seekers alike.

Percentage of Sunny Days in September in Runaway Bay

The chart illustrates the percentage of sunny days in Runaway Bay 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 Runaway Bay experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%77%65%51%62%43%49%43%52%39%33%61%
Data source: Runaway Bay September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Runaway Bay in September

In Runaway Bay, Jamaica, September enjoys a delightful 12 hours of daylight, maintaining the trend of ample sunlight typical for this coastal paradise. Following the summer months of July and August, which also offered 13 hours and 12 hours respectively, September marks a gentle transition as the days begin to shorten. The daylight duration remains consistent with the spring months of March through May, highlighting a seasonal rhythm that invites visitors to enjoy a variety of outdoor activities. As autumn approaches, the gradual decrease in daylight to 11 hours in October signals the shifting seasons, yet September still basks in the warmth and vibrancy of almost half a day spent soaking up the sun.

Average Daylight Hours in Runaway Bay for September

The chart illustrates the variation in daylight duration in Runaway Bay throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 8m11h 32m12h 2m12h 33m12h 59m13h 12m13h 5m12h 42m12h 12m11h 41m11h 14m11h 1m
Data source: Runaway Bay daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Runaway Bay

In September, Runaway Bay, Jamaica, experiences a notable shift in its wind dynamics, with an average wind speed dropping to 2.7 m/s (6 mph). This decline continues into October and November, marking the calmest period of the year. In contrast, the months leading up to September, particularly from January to August, showcase more vigorous breezes, generally ranging from 3.7 m/s to 4.3 m/s. The slight lull in September heralds a transition from summer's lively winds, inviting a more serene atmosphere that perfectly complements this idyllic Caribbean destination. As the year progresses, December sees a return to brisker winds, reminding visitors of the rhythmic dance of sea breezes that define Jamaica’s enchanting coastal climate.

Average September Wind Speed in Runaway Bay

The chart displays monthly wind speed patterns in Runaway Bay, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.94.33.93.73.74.04.23.92.7 m/s2.72.74.1
Data source: Runaway Bay September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Runaway Bay Compares to Other Months

Weather in Runaway Bay varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Runaway Bay, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January present contrasting weather patterns. In September, the temperatures are noticeably warmer, with minimums around 24°C (75°F) and maximums reaching up to 33°C (91°F). The month is also characterized by high humidity at 75%, along with significant precipitation, averaging 165 mm (6.5 in) over 21 days. In contrast, January experiences milder temperatures with a minimum of 19°C (66°F) and a maximum of 29°C (85°F). It is drier, with only 68 mm (2.7 in) of precipitation spread over 13 days, and slightly lower humidity at 70%. For more details on January weather, you can visit Runaway Bay weather in January.

September typically sees warmer temperatures compared to February, with averages around 27°C (82°F) and highs reaching up to 33°C (91°F). In contrast, February offers milder conditions, with average temperatures of 25°C (76°F) and maximums of 29°C (85°F). Additionally, September experiences significantly higher precipitation, totaling 165 mm (6.5 in) over 21 days, while February has much less rainfall at just 38 mm (1.5 in) across 14 days. The humidity is also slightly higher in September at 75%, compared to February's 67%. For more detailed information about February weather, you can check Runaway Bay weather in February.

September and March exhibit distinct weather characteristics that reflect the transition between seasons. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 33°C (91°F), with an average of 27°C (82°F), making it warmer than March, where temperatures vary from 20°C (68°F) to 31°C (87°F), with an average of 25°C (77°F). Additionally, September is marked by higher precipitation levels, with 165 mm (6.5 in) falling over 21 days, compared to March's 83 mm (3.3 in) over 18 days. Furthermore, humidity is more pronounced in September at 75%, while March experiences a slightly lower humidity of 66%. For a closer look at weather details in March, you can check Runaway Bay weather in March.

When comparing the weather in September and April, September tends to be warmer and more humid. In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 33°C (91°F), with an average of 27°C (82°F). This month also sees significant rainfall, with 165 mm (6.5 in) spread over 21 days, leading to a higher humidity level of 75%. In contrast, April experiences slightly cooler temperatures, with a minimum of 22°C (71°F) and a maximum of 31°C (88°F), averaging around 26°C (78°F). The lower precipitation in April, totaling 85 mm (3.3 in) over 15 days, is accompanied by a more comfortable humidity of 66%. For more detailed weather information, visit Runaway Bay weather in April.

In comparing the weather between September and May, September tends to be slightly warmer, with average temperatures reaching 27°C (82°F) compared to May's average of 26°C (80°F). Both months have high minimum temperatures, but September's maximum can reach up to 33°C (91°F), while May peaks at 32°C (90°F). Precipitation is considerably higher in September, with 165 mm (6.5 in) over 21 days of rain, whereas May receives 136 mm (5.3 in) over 18 days. Furthermore, September boasts a higher humidity level of 75%, compared to May's 64%, making September feel more tropical. For more details on May's climate, you can visit Runaway Bay weather in May.

In comparing the weather of September and June, both months experience similar average temperatures, hovering around 27°C (82°F), with maximums reaching up to 33°C (91°F). However, September tends to be wetter, with a significant increase in precipitation at 165 mm (6.5 in) over 21 days, compared to June's 65 mm (2.6 in) over just 12 days. Additionally, September's humidity is notably higher at 75%, while June maintains a more comfortable level at 66%. For a detailed look at June's climate, you can visit Runaway Bay weather in June.

In comparing the weather of September and July, both months experience similar temperature ranges, with minimums around 24°C (75°F), an average around 27-28°C (82°F), and maximums peaking at 33°C (91-92°F). However, September tends to be significantly wetter, receiving 165 mm (6.5 in) of precipitation over 21 days, compared to July’s 70 mm (2.8 in) over 14 days. Additionally, September sees a slightly higher humidity level at 75%, while July maintains a humidity level of 73%. These factors contribute to a more humid and rainy atmosphere in September compared to the drier conditions often found in July. For more details, you can view Runaway Bay weather in July.

In comparing the weather between September and August, both months feature similar temperature ranges, with minimums at around 24°C (75°F) and maximums peaking at 33°C (91°F). However, September experiences a slight dip in average temperature to 27°C (82°F), compared to August's warmer average of 28°C (83°F). Notably, September sees a significant increase in precipitation, accumulating 165 mm (6.5 in) over 21 rainy days, whereas August records only 92 mm (3.6 in) spread across 17 days. Humidity levels remain relatively stable, with September at 75% and August slightly higher at 76%. For a more detailed look at August's weather, you can visit Runaway Bay weather in August.

In September, temperatures range from a minimum of 24°C (75°F) to a maximum of 33°C (91°F), with an average of 27°C (82°F). The month experiences significant rainfall, totaling 165 mm (6.5 in) over 21 days, while humidity remains steady at 75%. In contrast, October sees slightly cooler maximum temperatures, with averages of 27°C (80°F) and highs of 31°C (88°F), although it still retains a minimum of 24°C (75°F). The level of precipitation increases to 182 mm (7.1 in), occurring across 24 days, while humidity holds steady at 75%. For a more detailed look at weather conditions, check out Runaway Bay weather in October.

In comparing the weather between September and November, we notice a slight decline in temperature. September features a minimum temperature of 24°C (75°F) and an average of 27°C (82°F), while in November, the minimum drops to 23°C (73°F) with an average temperature of 26°C (79°F). Both months experience high humidity levels, with September at 75% and November slightly higher at 77%. Precipitation is also noteworthy; September receives 165 mm (6.5 in) over 21 days, compared to November's 143 mm (5.6 in) over 22 days. Overall, November offers a milder climate, making it a pleasant transition into the end of the year. For more details, check out this page: Runaway Bay weather in November.

In September, the weather is warmer with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 33°C (91°F), while average temperatures sit at around 27°C (82°F). This month experiences significant rainfall, with 165 mm (6.5 in) of precipitation over 21 days and humidity levels at 75%. In contrast, December features slightly cooler temperatures, with a minimum of 22°C (71°F) and a maximum of 30°C (86°F), averaging 25°C (78°F). The precipitation decreases notably to 86 mm (3.4 in) over 18 days, and humidity drops slightly to 73%. For more detailed information on December weather, check out Runaway Bay weather in December.

Compare Runaway Bay's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Runaway Bay

As September settles over Runaway Bay, the weather takes on a distinctive character marked by significant humidity and frequent rainfall. This month is typically warmer, with temperatures consistently hovering in the upper twenties, creating a tropical ambiance that invites both relaxation and adventure. Unlike the drier months, September sees heightened precipitation, with rain showers occurring on the majority of days, contributing to the lush landscapes. Travelers should prepare for a mix of sun and showers, ensuring they enjoy the vibrant beauty of the area while staying adaptable to the conditions. For more details on what to expect, visit Runaway Bay Climate.