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September Weather in Plaisance, Haiti

Last updated: August 23, 2025

In September, the average temperature in Plaisance, Haiti hovers around 27°C (81°F), making it a warm destination for travelers. Expect temperatures to range from a cozy 21°C (71°F) to a sweltering 35°C (96°F). Be prepared for some rain, as the region experiences about 89 mm (3.5 in) of precipitation over 16 days, coupled with an average humidity of 76%.

September Temperature in Plaisance

In September in Plaisance, the average temperature is 27°C (81°F), with maximums reaching up to 35°C (96°F) and minimums dipping as low as 21°C (71°F). This warm weather makes it an ideal time for travelers to explore the outdoors and enjoy various activities.

September Weather in Plaisance: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Plaisance, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plaisance, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (96°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec757576788081828281807877
Data source: Temperature data for Plaisance generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Plaisance

In Plaisance in September, the precipitation amount is 89 mm (3.5 in) over the course of 16 days.

September Precipitation Trends in Plaisance

The chart displays monthly precipitation patterns in Plaisance, 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 Plaisance, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec16824409455526189735710
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Plaisance

In Plaisance in September, humidity is 76%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel stifling and sweat-inducing, which can be challenging for traveling.

September Average Humidity in Plaisance

This chart illustrates the average monthly humidity levels in Plaisance, 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 Plaisance is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%63%62%62%60%62%70%76%76%76%76%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Plaisance

In Plaisance in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Plaisance.

Maximum UV Index Levels in Plaisance for September

The chart shows the monthly maximum UV Index (UVI) for Plaisance 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 Plaisance typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131313131313121198
Data source: Plaisance 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.

How September Weather in Plaisance Compares to Other Months

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

This table compares monthly weather conditions in Plaisance, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)16 mm (0.6 inches)65%very high
February Weather24°C (76°F)8 mm (0.3 inches)63%extreme
March Weather24°C (76°F)24 mm (1.0 inches)62%extreme
April Weather26°C (78°F)40 mm (1.6 inches)62%extreme
May Weather26°C (80°F)94 mm (3.7 inches)60%extreme
June Weather27°C (81°F)54 mm (2.1 inches)61%extreme
July Weather28°C (82°F)52 mm (2.0 inches)70%extreme
August Weather28°C (82°F)61 mm (2.4 inches)76%extreme
September Weather27°C (81°F)89 mm (3.5 inches)76%extreme
October Weather27°C (80°F)73 mm (2.9 inches)76%extreme
November Weather26°C (78°F)57 mm (2.2 inches)76%very high
December Weather25°C (77°F)10 mm (0.4 inches)71%very high

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