July Weather in Swansea, United States

Last updated: June 24, 2025

In Swansea, United States, the average temperature in July hovers around 27°C (82°F). Prepare for a range of temperatures, with a minimum of 16°C (61°F) and a maximum soaring to 38°C (100°F). Expect approximately 154 mm (6.1 in) of precipitation spread over 17 days, contributing to an average humidity of 80%. Stay cool and enjoy the summer vibes!

July Temperature in Swansea

In July in Swansea, the average temperature is 27°C (82°F). Maximums can reach 38°C (100°F) and minimums can be as low as 16°C (61°F). This makes it an ideal time for travelers to enjoy warm weather while also being prepared for cooler evenings.

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 27°C (82°F), with highs reaching up to 38°C (100°F) and lows dropping to around 16°C (61°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 total precipitation amount reaches 154 mm (6.1 in) over the course of 17 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 154 mm (6.1 inches) of precipitation spread over approximately 17 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 80%. With an average temperature of 27°C (82°F), this humidity feels like stepping into a thick blanket of warmth that hugs you relentlessly, making outdoor activities feel sluggish and exhausting.

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 80%, 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 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 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 11, which falls under the extreme 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	9°C (49°F)	83 mm (3.3 inches)	86%	moderate
February Weather	12°C (54°F)	100 mm (3.9 inches)	81%	high
March Weather	15°C (58°F)	76 mm (3.0 inches)	81%	very high
April Weather	19°C (66°F)	112 mm (4.4 inches)	79%	very high
May Weather	23°C (74°F)	105 mm (4.2 inches)	75%	extreme
June Weather	26°C (79°F)	121 mm (4.8 inches)	75%	extreme
July Weather	27°C (82°F)	154 mm (6.1 inches)	80%	extreme
August Weather	27°C (81°F)	141 mm (5.6 inches)	81%	extreme
September Weather	25°C (77°F)	98 mm (3.9 inches)	83%	very high
October Weather	20°C (69°F)	71 mm (2.8 inches)	78%	very high
November Weather	13°C (55°F)	61 mm (2.4 inches)	85%	high
December Weather	10°C (51°F)	129 mm (5.1 inches)	87%	moderate