July Weather in Saint Helena, United States

Last updated: June 24, 2025

In Saint Helena, United States, the average temperature in July is a pleasant 23°C (74°F). While the mercury can dip to a cool 12°C (53°F), it can also rise to a sizzling 40°C (105°F). With 0 mm (0.0 in) of precipitation over 0 days, you can expect mostly dry weather. The average humidity sits at a comfortable 70%, making it an inviting time to explore the area!

July Temperature in Saint Helena

In July in Saint Helena, the average temperature is 23°C (74°F). Maximum temperatures can reach 40°C (105°F), while minimum temperatures can drop to as low as 12°C (53°F). Be prepared for warm days and cooler evenings when traveling to Saint Helena in July.

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

The chart illustrates July 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, July typically has an average temperature of 23°C (74°F), with highs reaching up to 40°C (105°F) and lows dropping to around 12°C (53°F).

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

July Precipitation in Saint Helena

In Saint Helena in July, the precipitation amount is 0 mm (0.0 in) during 0 days.

July Precipitation Trends in Saint Helena

The chart displays monthly precipitation patterns in Saint Helena, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Saint Helena, July typically receives around 0 mm (0.0 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

July Humidity in Saint Helena

In Saint Helena in July humidity is 70%. With an average temperature of 23°C (74°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat challenging but still bearable for traveling.

July Average Humidity in Saint Helena

This chart illustrates the average monthly humidity levels in Saint Helena, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Saint Helena is approximately 70%, offering insight into how humid the weather typically is during this month.

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

July UV Index in Saint Helena

In Saint Helena in July, 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 Saint Helena.

Maximum UV Index Levels in Saint Helena for July

The chart shows the monthly maximum UV Index (UVI) for Saint Helena in July, 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 July, the maximum UV index in Saint Helena typically reaches 11, which falls under the extreme exposure category.

Data source: Saint Helena July 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 July 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 July’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 July’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