Weather in Swansea in September
Swansea, United Kingdom averages a high of 17.1°C (62.8°F) and low of 12.1°C (53.8°F) in September, with 12 rain days and 8.5 hours of daily sunshine. Travel score: 65.4/100 (Good). The best time to visit Swansea is June.
High
17°C63°F
Low
12°C54°F
🌧️
12
rain days
☀️
8.5
hrs/day sunshine
💧
81%
humidity
65— Good
September in Swansea is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Swansea?
How much does it rain in Swansea in September?
Swansea receives an average of 95.9mm of rainfall across 12 rainy days in September. The annual total is 1256.2mm.
What should I pack for Swansea in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 17°C
Recommended
🧥
Light rain jacket
Some rainy days expected (12 days)
☔
Umbrella
Be prepared for occasional showers
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to United Kingdom in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31