January Weather in Saint Helena, United States

Last updated: June 24, 2025

In January, the average temperature in Saint Helena, United States hovers around 9°C (49°F), with a minimum of -1°C (30°F) and a maximum of 25°C (77°F). Expect about 137 mm (5.4 in) of precipitation spread over 8 days, creating a backdrop of 86% humidity that adds to the atmosphere of this location.

January Temperature in Saint Helena

In January in Saint Helena, the average temperature is 9°C (49°F). Maximums can reach 25°C (77°F) and minimums can be as low as -1°C (30°F). This variation makes Saint Helena a great destination for travelers seeking both mild and cooler weather during their visit.

January Weather in Saint Helena: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Saint Helena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Helena, January typically has an average temperature of 9°C (49°F), with highs reaching up to 25°C (77°F) and lows dropping to around -1°C (30°F).

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

January Precipitation in Saint Helena

In Saint Helena in January, the precipitation amount is 137 mm (5.4 in) spread over 8 days.

January Precipitation Trends in Saint Helena

The chart displays monthly precipitation patterns in Saint Helena, 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 Saint Helena, January typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Saint Helena

In Saint Helena in January, humidity is 86%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill in the air, making travel uncomfortable as the moisture clings to your skin and thickens the atmosphere, creating a sense of heaviness that can tire you quickly.

January Average Humidity in Saint Helena

This chart illustrates the average monthly humidity levels in Saint Helena, 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 Saint Helena is approximately 86%, 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 Saint Helena

In Saint Helena in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Saint Helena, you can check the information here.

Maximum UV Index Levels in Saint Helena for January

The chart shows the monthly maximum UV Index (UVI) for Saint Helena 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 Saint Helena typically reaches 3, which falls under the moderate exposure category.

Data source: Saint Helena 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 Saint Helena Compares to Other Months

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

This table compares monthly weather conditions in Saint Helena, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	137 mm (5.4 inches)	86%	moderate
February Weather	10°C (51°F)	141 mm (5.6 inches)	84%	moderate
March Weather	11°C (53°F)	92 mm (3.6 inches)	83%	high
April Weather	15°C (59°F)	39 mm (1.5 inches)	80%	very high
May Weather	18°C (64°F)	23 mm (0.9 inches)	80%	very high
June Weather	22°C (72°F)	2 mm (0.1 inches)	76%	extreme
July Weather	23°C (74°F)	0 mm (0.0 inches)	70%	extreme
August Weather	23°C (73°F)	0 mm (0.0 inches)	66%	very high
September Weather	21°C (71°F)	2 mm (0.1 inches)	68%	very high
October Weather	18°C (64°F)	38 mm (1.5 inches)	72%	high
November Weather	12°C (55°F)	51 mm (2.0 inches)	84%	moderate
December Weather	9°C (49°F)	95 mm (3.7 inches)	84%	moderate