Last updated: August 21, 2025
August in Port-au-Prince, Haiti is characterized by warm temperatures and noticeable humidity. With maximum highs reaching 32°C (89°F) and average temperatures around 25°C (77°F), the heat can be quite intense, especially with a relative humidity of 71%. Travelers should be prepared for the frequent rain of the season, as August witnesses approximately 192 mm (7.6 in) of precipitation over 23 days, creating a vibrant yet challenging climate. Whether you're exploring the local culture or enjoying the scenic beauty, understanding the weather will enhance your experience in this bustling Caribbean city.
In August, Port-au-Prince, Haiti experiences warm and inviting temperatures, making it one of the peak months for heat lovers. With a minimum of 20°C (68°F) and an average of 25°C (77°F), the city's climate is both comfortable and enjoyable. The maximum temperature reaches 32°C (89°F), aligning with the trend of rising temperatures throughout the summer months. This slight increase from July's conditions reflects a typical Caribbean summer, where warmth prevails, and the balmy evenings provide a perfect backdrop for outdoor activities. As the month progresses, these temperatures lead effortlessly into the cooler, yet still pleasant, autumn months.
In August, Port-au-Prince experiences a notable peak in rainfall, with an impressive 192 mm (7.6 in) of precipitation spread over 23 days. This surge marks a continuation of the wet season that begins in the earlier months—April and May also see significant rainfall but fall short of August's totals. Following a steady increase in precipitation from January’s modest 31 mm to August's peak, the trend clearly shows that summer months intensify the rains, with September following closely behind at 228 mm (9.0 in). As the city transitions into the latter part of the year, it prepares for more frequent and heavier downpours, highlighting the importance of understanding seasonal patterns for planning and preparedness.
In August, Port-au-Prince, Haiti, experiences a notable spike in humidity, reaching 71%. This increase marks a shift from the relatively lower humidity levels seen in the earlier months of the year, where figures hovered around the mid to high 50s. The trend continues into September, when humidity peaks at 73%, suggesting that the late summer months bring a distinct moisture-heavy atmosphere. Interestingly, this more humid period contrasts sharply with the drier months of January through May, creating a palpable transition as the year progresses. Overall, August serves as a key marker of the city's seasonal shift, as the tropical environment becomes increasingly vibrant and lush.
In August, Port-au-Prince experiences a notably high UV Index of 13, indicating an extreme exposure category with a burn time of just 10 minutes. This trend of intense sun is consistent with the previous months, where UV Index levels surged from 12 in July to 13 in August, part of a broader pattern seen since March. The extreme UV levels persist, emphasizing the need for vigilance when outdoors. As the year progresses into September and October, the index slightly declines, but the intensity remains high throughout the summer months. For more information on UV index trends in Port-au-Prince throughout the year, visit the Port-au-Prince UV Index.
UV Risk Categories
August in Port-au-Prince, Haiti, typically ushers in a brilliant display of sunshine, with the city basking in approximately 341 hours of daylight. This month continues the trend of abundant sunlight that peaks in July at 355 hours, showcasing a vibrant summer that residents and visitors alike enjoy. Following the height of summer, August's sunshine softens slightly, yet remains plentiful compared to the cooler months ahead, where hours dip below 300. As we transition into autumn, the gradual decrease in daylight underscores the unique rhythm of Haitian weather, where long, sunny days provide a refreshing backdrop to the bustling life of the capital.
In August, the likelihood of sunny weather in Port-au-Prince, Haiti, dips to 31%, marking it as one of the cloudier months of the year. This decline follows a slightly brighter July, where the sun shone about 41% of the time. As summer transitions into the wetter season, August represents a trend where sunshine becomes less predictable, contrasting sharply with the sunnier brilliance of February's 74% chance. While the month may offer some sunny spells, it's wise to prepare for more overcast days, continuing a pattern established late in summer.
In Port-au-Prince, Haiti, August marks a subtle transition in daylight duration, offering approximately 12 hours of daylight. This is a notable shift from the longer days of May through July, which bask in 13 hours of light. As summer wanes, the daylight hours begin to trend downward, echoing the pattern that will persist into the fall months. Interestingly, the daylight duration remains consistent at 12 hours through September before tapering off to 11 hours by October. This rhythmic ebb and flow of daylight not only shapes the daily routines of the city's residents but also reflects the gradual change of seasons in this vibrant Caribbean locale.
In Port-au-Prince, August brings a gentle breeze with an average wind speed of 1.2 m/s (3 mph), a notable consistency compared to previous months. This month mirrors the winds of July, maintaining a refreshing lightness that characterizes mid-year in the region. Interestingly, as summer transitions into fall, the wind speeds generally decline, with the annual low occurring in September at just 0.9 m/s (2 mph). Overall, the winds in Port-au-Prince are consistently mild throughout the summer, hinting at a tranquil, yet warm atmosphere that defines the Haitian summer experience.
Weather in Port-au-Prince varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Port-au-Prince, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present contrasting weather conditions. In August, temperatures range from a minimum of 20°C (68°F) to a maximum of 32°C (89°F), with an average temperature of 25°C (77°F). This month is characterized by high humidity at 71% and considerable rainfall, receiving 192 mm (7.6 inches) over 23 days. In contrast, January features milder temperatures, with a minimum of 11°C (52°F) and a maximum of 29°C (84°F), averaging around 21°C (71°F). This month sees significantly less precipitation, only 31 mm (1.2 inches) across just 7 days, and slightly lower humidity at 65%. For more detailed information, you can visit Port-au-Prince weather in January.
August and February present quite contrasting weather patterns. In August, temperatures range from a minimum of 20°C (68°F) to a maximum of 32°C (89°F), with an average of 25°C (77°F). This month is also marked by frequent rainfall, with 192 mm (7.6 in) of precipitation spread over 23 days, resulting in higher humidity levels at 71%. On the other hand, February offers a milder climate, with temperatures ranging from a minimum of 15°C (60°F) to a maximum of 30°C (86°F), and an average of 22°C (72°F). Precipitation in February is significantly lower at 32 mm (1.3 in), occurring over just 9 days, and humidity is also less intense at 63%. For more details, check out Port-au-Prince weather in February.
In August, the weather is typically warmer and more humid compared to March, with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 32°C (89°F) and an average humidity level of 71%. August also experiences more precipitation, totaling 192 mm (7.6 in) over 23 days, making it one of the wettest months of the year. In contrast, March has milder temperatures, with minimums around 14°C (58°F) and maximums reaching 29°C (84°F). The precipitation during March is significantly less at 113 mm (4.4 in) over 17 days, coupled with a lower humidity level of 59%. For more detailed information, you can visit Port-au-Prince weather in March.
In comparing the weather of August and April, we find that August tends to be warmer, with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 32°C (89°F), while April's temperatures range from 16°C (61°F) to 29°C (85°F). Both months experience significant precipitation, with August receiving 192 mm (7.6 in) across 23 days and April slightly less at 190 mm (7.5 in) over 24 days. Additionally, humidity levels are higher in August at 71%, compared to 58% in April. For more detailed information, you can visit Port-au-Prince weather in April.
In August, temperatures typically range from a minimum of 20°C (68°F) to a maximum of 32°C (89°F), resulting in an average of 25°C (77°F). The month is marked by high humidity at 71% and significant precipitation, with around 192 mm (7.6 in) falling over 23 days. In contrast, May enjoys slightly cooler temperatures, with a minimum of 18°C (65°F) and a maximum of 31°C (88°F), leading to an average of 24°C (75°F). Although May experiences a similar amount of precipitation at 184 mm (7.2 in), it is spread over 25 days, and the humidity is notably lower at 57%. For a more detailed look at May's conditions, check out Port-au-Prince weather in May.
In comparing the weather between August and June, August tends to be slightly warmer, with average temperatures reaching 25°C (77°F) compared to June's average of 24°C (76°F). Both months experience similar maximum temperatures, peaking at 32°C (89°F) in August and 31°C (88°F) in June. However, August is notably wetter, receiving 192 mm (7.6 in) of precipitation over 23 days, while June sees less rain, with 132 mm (5.2 in) over 20 days. Additionally, humidity levels are higher in August at 71%, compared to June's 57%. For more details, visit Port-au-Prince weather in June.
In comparing the weather of August and July, we see that both months have similar average temperatures, with July recording a minimum of 19°C and a maximum of 32°C, while August’s minimum is slightly higher at 20°C, with the same maximum. However, August experiences significantly more precipitation, totaling 192 mm over 23 days compared to July's 139 mm over 22 days. Additionally, humidity levels are higher in August at 71%, compared to July's 63%, resulting in a more humid atmosphere during the latter part of summer. For a detailed look at July's weather, you can visit Port-au-Prince weather in July.
In comparing the weather of August and September, we find that both months have similar minimum temperatures around 20°C (68°F), but September's average temperature is slightly cooler at 24°C (76°F) compared to August's 25°C (77°F). While August experiences a maximum temperature of 32°C (89°F), September maintains a similar high of 31°C (87°F). However, September sees an increase in precipitation, totaling 228 mm (9.0 in) over 26 days, compared to August’s 192 mm (7.6 in) across 23 days, resulting in slightly higher humidity levels of 73% in September versus 71% in August. For more details on September weather, visit Port-au-Prince weather in September.
In comparing the weather of August and October, we see some notable similarities and differences. August typically has a slightly higher average temperature of 25°C (77°F) compared to October's average of 24°C (75°F), with August also reaching a maximum of 32°C (89°F) while October's max is 31°C (87°F). Precipitation levels are quite similar, with August receiving 192 mm (7.6 in) over 23 days and October experiencing a bit more at 207 mm (8.2 in) across 24 days. Both months maintain a high humidity level, with August at 71% and October slightly higher at 72%. You can learn more about the specifics of October weather here.
In comparing the weather of August and November, August is notably warmer with average temperatures ranging from a minimum of 20°C (68°F) to a maximum of 32°C (89°F). In contrast, November brings slightly cooler conditions, with temperatures ranging from 16°C (62°F) to 29°C (85°F). While August experiences a higher average precipitation of 192 mm (7.6 in) over 23 days, November sees a decrease in rainfall to 150 mm (5.9 in) across 18 days. Humidity levels remain quite similar, with August at 71% and November at 72%. For more specific details, you can check out Port-au-Prince weather in November.
August weather is characterized by warmer temperatures, with a minimum of 20°C (68°F), an average of 25°C (77°F), and a maximum of 32°C (89°F). It also experiences considerable precipitation, with 192 mm (7.6 in) falling over 23 days, resulting in a humidity level of 71%. In contrast, December offers milder conditions, featuring a lower minimum temperature of 15°C (60°F), an average of 22°C (72°F), and a maximum of 29°C (84°F). During this month, precipitation drops significantly to 36 mm (1.4 in) over just 8 days, with humidity slightly lower at 69%. For more details, check Port-au-Prince weather in December.
As August rolls into Port-au-Prince, the weather takes on a distinctly warm and humid character, standing apart from the cooler, drier months that precede it. With maximum temperatures reaching around 32°C (89°F) and an average of 25°C (77°F), visitors can expect a summer-like ambiance that feels even warmer due to elevated humidity levels of 71%. This month also brings a significant increase in rainfall, recording about 192 mm (7.6 in) over 23 days, creating a lush landscape but also potential interruptions to outdoor activities. While the heat can be intense, this vibrancy marks August as a unique and dynamic time to experience the city’s lively atmosphere. To explore more about the weather patterns throughout the year, check out Port-au-Prince Climate.