March Weather in Saint Helena, United States

Last updated: June 24, 2025

In March, the average temperature in Saint Helena, United States hovers around 11°C (53°F), with a minimum dipping to -1°C (31°F) and a maximum soaring up to 29°C (85°F). Expect 92 mm (3.6 in) of precipitation spread over 10 days, contributing to an average humidity level of 83%. Perfect for cozy indoor activities or splashing in the rain!

March Temperature in Saint Helena

In March in Saint Helena, the average temperature is 11°C (53°F). The maximum can reach 29°C (85°F), while the minimum can drop as low as -1°C (31°F). Be prepared for a wide range of temperatures, making versatile clothing essential for a comfortable travel experience.

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

The chart illustrates March 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, March typically has an average temperature of 11°C (53°F), with highs reaching up to 29°C (85°F) and lows dropping to around -1°C (31°F).

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

March Precipitation in Saint Helena

In Saint Helena in March, the total precipitation amount is 92 mm (3.6 in), which falls over the course of 10 days.

March Precipitation Trends in Saint Helena

The chart displays monthly precipitation patterns in Saint Helena, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Saint Helena, March typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

March Humidity in Saint Helena

In Saint Helena in March, humidity is 83%. With an average temperature of 11°C (53°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and causing an inevitable sheen of sweat to form, which can dampen the joy of exploring your surroundings.

March Average Humidity in Saint Helena

This chart illustrates the average monthly humidity levels in Saint Helena, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Saint Helena is approximately 83%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Saint Helena

In Saint Helena in March, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Saint Helena.

Maximum UV Index Levels in Saint Helena for March

The chart shows the monthly maximum UV Index (UVI) for Saint Helena in March, 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 March, the maximum UV index in Saint Helena typically reaches 7, which falls under the high exposure category.

Data source: Saint Helena March 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 March 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 March’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 March’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