July Weather in Saint-Nazaire, France

Last updated: August 23, 2025

In July, the average temperature in Saint-Nazaire, France is a comfortable 20°C (68°F), with a minimum dipping to 11°C (53°F) and soaring to a maximum of 32°C (91°F). Expect around 41 mm (1.6 in) of precipitation spread over 8 days, and a fairly moderate average humidity of 65%. Perfect weather for exploring the great outdoors!

July Temperature in Saint-Nazaire

In July in Saint-Nazaire, the average temperature is 20°C (68°F). Maximums can reach 32°C (91°F), while minimums can be as low as 11°C (53°F). This pleasant range makes it a perfect time for outdoor activities and exploration.

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

The chart illustrates July temperature patterns in Saint-Nazaire, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Nazaire, July typically has an average temperature of 20°C (68°F), with highs reaching up to 32°C (91°F) and lows dropping to around 11°C (53°F).

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

July Precipitation in Saint-Nazaire

In Saint-Nazaire in July, the total precipitation amount is 41 mm (1.6 in) occurring over the course of 8 days.

July Precipitation Trends in Saint-Nazaire

The chart displays monthly precipitation patterns in Saint-Nazaire, 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-Nazaire, July typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 8 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-Nazaire

In Saint-Nazaire in July humidity is 65%. With an average temperature of 20°C (68°F), this humidity feels quite muggy for traveling, making even short walks feel a bit sticky and requiring frequent hydration.

July Average Humidity in Saint-Nazaire

This chart illustrates the average monthly humidity levels in Saint-Nazaire, 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-Nazaire is approximately 65%, 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-Nazaire

In Saint-Nazaire in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Saint-Nazaire.

Maximum UV Index Levels in Saint-Nazaire for July

The chart shows the monthly maximum UV Index (UVI) for Saint-Nazaire 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-Nazaire typically reaches 9, which falls under the very high exposure category.

Data source: Saint-Nazaire 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-Nazaire Compares to Other Months

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

This table compares monthly weather conditions in Saint-Nazaire, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	50 mm (2.0 inches)	88%	low
February Weather	8°C (47°F)	67 mm (2.6 inches)	87%	moderate
March Weather	10°C (50°F)	67 mm (2.6 inches)	84%	moderate
April Weather	12°C (54°F)	43 mm (1.7 inches)	83%	high
May Weather	15°C (59°F)	59 mm (2.3 inches)	81%	very high
June Weather	18°C (65°F)	71 mm (2.8 inches)	75%	very high
July Weather	20°C (68°F)	41 mm (1.6 inches)	65%	very high
August Weather	19°C (67°F)	48 mm (1.9 inches)	67%	very high
September Weather	17°C (63°F)	39 mm (1.5 inches)	75%	high
October Weather	14°C (58°F)	82 mm (3.2 inches)	85%	moderate
November Weather	10°C (50°F)	78 mm (3.1 inches)	88%	low
December Weather	9°C (48°F)	112 mm (4.4 inches)	90%	low