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September Weather in Lethem, Guyana

Last updated: August 23, 2025

In September, the average temperature in Lethem, Guyana reaches a warm 28°C (83°F). Expect minimums of 22°C (72°F) and maximums soaring to 37°C (100°F). With a total precipitation of 88 mm (3.5 in) spread over 13 days, you might want to carry an umbrella. The average humidity during this month is around 61%, adding to the atmosphere of this vibrant locale.

September Temperature in Lethem

In September in Lethem, the average temperature is 28°C (83°F), with maximums reaching 37°C (100°F) and minimums dropping as low as 22°C (72°F). It's an ideal time for travelers seeking warm weather and plenty of opportunities for outdoor activities.

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

The chart illustrates September temperature patterns in Lethem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lethem, September typically has an average temperature of 28°C (83°F), with highs reaching up to 37°C (100°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec828283838079788183858482
Data source: Temperature data for Lethem 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 Lethem

In Lethem in September, the precipitation amount is 88 mm (3.5 in) spread over 13 days.

September Precipitation Trends in Lethem

The chart displays monthly precipitation patterns in Lethem, 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 Lethem, September typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec2528429927435332416588438236
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lethem

In Lethem in September humidity is 61%. With an average temperature of 28°C (83°F), this humidity feels like a warm embrace that can be quite stifling for travelers, making breathing a bit more laborious and the air seem thick, which might lead to a slower pace and a greater thirst for hydration.

September Average Humidity in Lethem

This chart illustrates the average monthly humidity levels in Lethem, 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 Lethem is approximately 61%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec52%49%47%47%61%89%86%81%61%41%51%59%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lethem

In Lethem in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Lethem.

Maximum UV Index Levels in Lethem for September

The chart shows the monthly maximum UV Index (UVI) for Lethem 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 Lethem typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec131516171513121313131313
Data source: Lethem 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 Lethem Compares to Other Months

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

This table compares monthly weather conditions in Lethem, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (82°F)25 mm (1.0 inches)52%extreme
February Weather28°C (82°F)28 mm (1.1 inches)49%extreme
March Weather28°C (83°F)42 mm (1.7 inches)46%extreme
April Weather28°C (83°F)99 mm (3.9 inches)47%extreme
May Weather26°C (80°F)274 mm (10.8 inches)60%extreme
June Weather26°C (79°F)353 mm (13.9 inches)89%extreme
July Weather26°C (79°F)324 mm (12.7 inches)86%extreme
August Weather27°C (81°F)165 mm (6.5 inches)81%extreme
September Weather28°C (83°F)88 mm (3.5 inches)61%extreme
October Weather30°C (86°F)43 mm (1.7 inches)41%extreme
November Weather29°C (85°F)82 mm (3.2 inches)51%extreme
December Weather28°C (82°F)36 mm (1.4 inches)59%extreme

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