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May 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 May hovers around 26°C (80°F). Expect a minimum of 24°C (76°F) and a maximum of 28°C (82°F), creating a pleasantly warm atmosphere. During this time, precipitation is modest, totaling around 14 mm (0.6 in) over 4 days, while the average humidity remains quite high at 85%.

May Temperature in Georgetown

In May in Georgetown, the average temperature is 26°C (80°F). The maximum can reach 28°C (82°F), and the minimum can be as low as 24°C (76°F). This pleasant climate makes Georgetown an ideal destination for travelers seeking warm weather and outdoor activities.

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

The chart illustrates May 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, May typically has an average temperature of 26°C (80°F), with highs reaching up to 28°C (82°F) and lows dropping to around 24°C (76°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.

May Precipitation in Georgetown

In Georgetown in May, the total precipitation amount is 14 mm (0.6 in) spread over a duration of 4 days.

May Precipitation Trends in Georgetown

The chart displays monthly precipitation patterns in Georgetown, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Georgetown, May typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec91516211414171919151112
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Georgetown

In Georgetown in May humidity is 85%. With an average temperature of 26°C (80°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities quite challenging and necessitating regular breaks to stay hydrated while sightseeing.

May Average Humidity in Georgetown

This chart illustrates the average monthly humidity levels in Georgetown, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Georgetown is approximately 85%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Georgetown

In Georgetown in May, 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 Georgetown.

Maximum UV Index Levels in Georgetown for May

The chart shows the monthly maximum UV Index (UVI) for Georgetown in May, 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 May, the maximum UV index in Georgetown typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141414131210101112131414
Data source: Georgetown May 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 May 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 May’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 May’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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