July Weather in Swansea, United States

Last updated: June 24, 2025

In July, the average temperature in Swansea, United States is a pleasant 23°C (74°F). However, be prepared for a range, as temperatures can dip to a minimum of 13°C (56°F) or soar up to a maximum of 37°C (99°F). With 122 mm (4.8 in) of precipitation spread over 12 days and an average humidity of 76%, it's wise to plan accordingly for both sun and occasional rain during your stay.

July Temperature in Swansea

In July in Swansea, the average temperature is 23°C (74°F). Maximum can reach 37°C (99°F) and minimum can be as low as 13°C (56°F). This makes it a great time for travelers to enjoy outdoor activities while being prepared for the occasional temperature fluctuation.

July Weather in Swansea: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Swansea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Swansea, July typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (99°F) and lows dropping to around 13°C (56°F).

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

July Precipitation in Swansea

In Swansea in July, the precipitation amount is 122 mm (4.8 in) over a span of 12 days.

July Precipitation Trends in Swansea

The chart displays monthly precipitation patterns in Swansea, 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 Swansea, July typically receives around 122 mm (4.8 inches) of precipitation spread over approximately 12 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 Swansea

In Swansea in July humidity is 76%. With an average temperature of 23°C (74°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor exploration feel a bit sluggish and requiring frequent breaks for hydration and respite from the heat.

July Average Humidity in Swansea

This chart illustrates the average monthly humidity levels in Swansea, 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 Swansea is approximately 76%, 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 Swansea

In Swansea 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 Swansea.

Maximum UV Index Levels in Swansea for July

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

Data source: Swansea 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 Swansea Compares to Other Months

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

This table compares monthly weather conditions in Swansea, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	74 mm (2.9 inches)	84%	moderate
February Weather	1°C (35°F)	92 mm (3.6 inches)	84%	moderate
March Weather	4°C (39°F)	102 mm (4.0 inches)	82%	high
April Weather	9°C (49°F)	123 mm (4.9 inches)	79%	very high
May Weather	15°C (58°F)	101 mm (4.0 inches)	75%	very high
June Weather	20°C (68°F)	97 mm (3.8 inches)	78%	very high
July Weather	23°C (74°F)	122 mm (4.8 inches)	76%	very high
August Weather	23°C (74°F)	92 mm (3.6 inches)	76%	very high
September Weather	19°C (67°F)	97 mm (3.8 inches)	75%	very high
October Weather	14°C (57°F)	135 mm (5.3 inches)	75%	high
November Weather	7°C (45°F)	101 mm (4.0 inches)	80%	moderate
December Weather	2°C (36°F)	120 mm (4.7 inches)	80%	low