nomadseason

September Weather in Hillsborough, Grenada

Last updated: August 23, 2025

In Hillsborough, Grenada, the average temperature in September reaches a warm 28°C (82°F). Expect a minimum temperature of 25°C (78°F) and a maximum of 30°C (85°F). Be prepared for precipitation totaling 138 mm (5.4 in) over approximately 20 days, coupled with an average humidity of 80%.

September Temperature in Hillsborough

In September in Hillsborough, the average temperature is 28°C (82°F), with maximums reaching up to 30°C (85°F) and minimums dropping as low as 25°C (78°F). This pleasant climate makes it an ideal time for travelers seeking warm weather and outdoor adventures.

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

The chart illustrates September temperature patterns in Hillsborough, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hillsborough, September typically has an average temperature of 28°C (82°F), with highs reaching up to 30°C (85°F) and lows dropping to around 25°C (78°F).
JanFebMarAprMayJunJulAugSepOctNovDec797878798081818182818180
Data source: Temperature data for Hillsborough 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 Hillsborough

In Hillsborough in September, the precipitation amount is 138 mm (5.4 in) over the course of 20 days.

September Precipitation Trends in Hillsborough

The chart displays monthly precipitation patterns in Hillsborough, 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 Hillsborough, September typically receives around 138 mm (5.4 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec473344284610415016413818012766
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Hillsborough

In Hillsborough in September, humidity is 80%. With an average temperature of 28°C (82°F), this humidity feels like a warm, thick blanket enveloping you, making outdoor activities sweaty and demanding frequent breaks in the shade while traveling.

September Average Humidity in Hillsborough

This chart illustrates the average monthly humidity levels in Hillsborough, 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 Hillsborough is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%80%80%79%80%83%84%81%80%82%83%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hillsborough

In Hillsborough in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Hillsborough, you can check here.

Maximum UV Index Levels in Hillsborough for September

The chart shows the monthly maximum UV Index (UVI) for Hillsborough 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 Hillsborough typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111214141413131414131110
Data source: Hillsborough 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 Hillsborough Compares to Other Months

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

This table compares monthly weather conditions in Hillsborough, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)47 mm (1.8 inches)81%extreme
February Weather26°C (78°F)33 mm (1.3 inches)80%extreme
March Weather26°C (79°F)44 mm (1.7 inches)80%extreme
April Weather26°C (80°F)28 mm (1.1 inches)79%extreme
May Weather27°C (81°F)46 mm (1.8 inches)80%extreme
June Weather27°C (81°F)104 mm (4.1 inches)83%extreme
July Weather27°C (81°F)150 mm (5.9 inches)84%extreme
August Weather27°C (81°F)164 mm (6.4 inches)81%extreme
September Weather28°C (82°F)138 mm (5.4 inches)80%extreme
October Weather27°C (82°F)180 mm (7.1 inches)82%extreme
November Weather27°C (81°F)127 mm (5.0 inches)83%extreme
December Weather27°C (80°F)66 mm (2.6 inches)82%very high

Compare Hillsborough's Climate with Cities Worldwide