October Weather in Swansea, United States

Last updated: June 24, 2025

In October, the average temperature in Swansea, United States hovers around 20°C (69°F), offering a pleasant climate. However, be prepared for a wide temperature range, with minimums dipping to 1°C (34°F) and maximums soaring up to 38°C (100°F). Expect about 71 mm (2.8 in) of precipitation over 8 days, contributing to an average humidity of 78%. Enjoy the varied weather!

October Temperature in Swansea

In October in Swansea, the average temperature is 20°C (69°F). Maximums can reach 38°C (100°F) and minimums can be as low as 1°C (34°F). Pack for a range of weather to fully enjoy your travels in Swansea.

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

The chart illustrates October 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, October typically has an average temperature of 20°C (69°F), with highs reaching up to 38°C (100°F) and lows dropping to around 1°C (34°F).

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

October Precipitation in Swansea

In Swansea in October, the precipitation amount is 71 mm (2.8 in) over the course of 8 days.

October Precipitation Trends in Swansea

The chart displays monthly precipitation patterns in Swansea, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Swansea, October typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Swansea

In Swansea in October, humidity is 78%. With an average temperature of 20°C (69°F), this humidity feels like a warm, enveloping blanket, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick and heavy, urging you to seek out shaded areas and refreshing drinks.

October Average Humidity in Swansea

This chart illustrates the average monthly humidity levels in Swansea, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Swansea is approximately 78%, offering insight into how humid the weather typically is during this month.

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

October UV Index in Swansea

In Swansea in October, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Swansea.

Maximum UV Index Levels in Swansea for October

The chart shows the monthly maximum UV Index (UVI) for Swansea in October, 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 October, the maximum UV index in Swansea typically reaches 8, which falls under the very high exposure category.

Data source: Swansea October 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 October 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 October’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 October’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