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

Last updated: August 31, 2025

In January, the average temperature in Georgetown, Saint Helena, Ascension and Tristan da Cunha is a pleasant 25°C (77°F). Expect a minimum of 23°C (74°F) and a maximum of 27°C (81°F), perfect for outdoor activities. There is a slight chance of rain, with an average precipitation of just 9 mm (0.3 in) over 1 day. To top it off, the average humidity is a comfortable 82%, making for a lovely climate.

January Temperature in Georgetown

In January in Georgetown, the average temperature is 25°C (77°F), with a maximum that can reach 27°C (81°F) and a minimum that can drop to 23°C (74°F). This pleasant climate makes Georgetown an ideal destination for outdoor activities and sightseeing during this time.

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

The chart illustrates January 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, January typically has an average temperature of 25°C (77°F), with highs reaching up to 27°C (81°F) and lows dropping to around 23°C (74°F).

Data source: Temperature data for Georgetown generated using information from the Copernicus Climate Change Service.

January Precipitation in Georgetown

In Georgetown in January, the precipitation amount is 9 mm (0.3 in) over the course of 1 day.

January Precipitation Trends in Georgetown

The chart displays monthly precipitation patterns in Georgetown, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Georgetown, January typically receives around 9 mm (0.3 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Georgetown

In Georgetown in January, humidity is 82%. With an average temperature of 25°C (77°F), this humidity feels like a warm, oppressive blanket enveloping you as you explore, making every step feel more laborious and prompting the need for frequent hydration breaks.

January Average Humidity in Georgetown

This chart illustrates the average monthly humidity levels in Georgetown, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Georgetown is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Georgetown

In Georgetown in January, 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 Georgetown, you can check here.

Maximum UV Index Levels in Georgetown for January

The chart shows the monthly maximum UV Index (UVI) for Georgetown in January, 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 January, the maximum UV index in Georgetown typically reaches 14, which falls under the extreme exposure category.

Data source: Georgetown January 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 January 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 January’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 January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	9 mm (0.3 inches)	82%	extreme
February Weather	26°C (79°F)	15 mm (0.6 inches)	80%	extreme
March Weather	27°C (80°F)	16 mm (0.6 inches)	79%	extreme
April Weather	27°C (81°F)	21 mm (0.8 inches)	80%	extreme
May Weather	26°C (80°F)	14 mm (0.6 inches)	85%	extreme
June Weather	26°C (78°F)	14 mm (0.6 inches)	81%	very high
July Weather	25°C (77°F)	17 mm (0.7 inches)	79%	very high
August Weather	24°C (75°F)	19 mm (0.8 inches)	79%	extreme
September Weather	24°C (75°F)	19 mm (0.7 inches)	80%	extreme
October Weather	24°C (75°F)	15 mm (0.6 inches)	80%	extreme
November Weather	24°C (76°F)	11 mm (0.4 inches)	80%	extreme
December Weather	24°C (76°F)	12 mm (0.5 inches)	80%	extreme