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August Weather in Georgetown, Saint Helena, Ascension and Tristan da Cunha

Last updated: August 31, 2025

In Georgetown, Saint Helena, Ascension and Tristan da Cunha, the average temperature in August is a pleasant 24°C (75°F), with a minimum of 22°C (73°F) and a maximum of 25°C (78°F). During this month, you can expect an average precipitation amount of 19 mm (0.8 in), spread over approximately 5 days. With an average humidity level of 79%, it’s advisable to embrace a light and comfortable wardrobe while enjoying the weather!

August Temperature in Georgetown

In August in Georgetown, the average temperature is 24°C (75°F), with maxima reaching up to 25°C (78°F) and minima dropping as low as 22°C (73°F). This pleasant climate makes it an ideal time for traveling and enjoying outdoor activities.

August Weather in Georgetown: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Georgetown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Georgetown, August typically has an average temperature of 24°C (75°F), with highs reaching up to 25°C (78°F) and lows dropping to around 22°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec777980808078767574757576
Data source: Temperature data for Georgetown 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.

August Precipitation in Georgetown

In Georgetown in August, the total precipitation amount is 19 mm (0.8 in), occurring over the course of 5 days.

August Precipitation Trends in Georgetown

The chart displays monthly precipitation patterns in Georgetown, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Georgetown, August typically receives around 19 mm (0.8 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec91516211414171919151112
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Georgetown

In Georgetown in August, humidity is 79%. With an average temperature of 24°C (75°F), this humidity feels like a warm, tropical embrace, making traveling quite sticky and requiring ample hydration and light clothing to keep comfortable while exploring.

August Average Humidity in Georgetown

This chart illustrates the average monthly humidity levels in Georgetown, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Georgetown is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%79%80%85%81%79%79%80%80%80%80%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Georgetown

In Georgetown in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Georgetown.

Maximum UV Index Levels in Georgetown for August

The chart shows the monthly maximum UV Index (UVI) for Georgetown in August, 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 August, the maximum UV index in Georgetown typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141414131210101112131414
Data source: Georgetown August 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 August Weather in Georgetown Compares to Other Months

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

This table compares monthly weather conditions in Georgetown, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)9 mm (0.3 inches)82%extreme
February Weather26°C (79°F)15 mm (0.6 inches)80%extreme
March Weather27°C (80°F)16 mm (0.6 inches)79%extreme
April Weather27°C (81°F)21 mm (0.8 inches)80%extreme
May Weather26°C (80°F)14 mm (0.6 inches)85%extreme
June Weather26°C (78°F)14 mm (0.6 inches)81%very high
July Weather25°C (77°F)17 mm (0.7 inches)79%very high
August Weather24°C (75°F)19 mm (0.8 inches)79%extreme
September Weather24°C (75°F)19 mm (0.7 inches)80%extreme
October Weather24°C (75°F)15 mm (0.6 inches)80%extreme
November Weather24°C (76°F)11 mm (0.4 inches)80%extreme
December Weather24°C (76°F)12 mm (0.5 inches)80%extreme

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