Swansea in May
Planning a trip to Swansea in May? Here's the honest weather briefing for what autumn looks like on the ground.
Expect the mercury to hit around 15.1 degrees during the day and settle at 7.6 degrees after dark. The temperature stays pretty consistent through the day. It's cool but manageable. A jumper handles most of it.
At 15.1 degrees, May sits 3.1 degrees below the annual average of 18.2 degrees.
You're looking at 59mm of rain across 10 days in a typical May. Light enough that it won't ruin your plans.
Sunshine-wise, May delivers around 6.7 MJ/m2 of daily solar radiation. UV sits in the moderate category. Sunscreen is still wise, especially if you burn easily.
May scores 2.7/10 on our Comfort Score. It's the tough end of the year weather-wise.
For your suitcase: layers you can peel on and off.
Scroll down for the detailed climate data, or explore what nearby cities are like in May.
May at a Glance
Temperature Range
Daily temperature range in May. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Layered clothing for mild to cool conditions
- Extra layers for chilly nights
- Proper rain gear for frequent showers
Coming From Overseas?
How May in Swansea stacks up against major cities around the world.
About 3 degrees cooler and considerably wetter.
About 8 degrees cooler and considerably drier.
About 9 degrees cooler and considerably drier.
How May Compares
Swansea's monthly climate at a glance. May is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 22.7 | 13.3 | 62mm | 9.5 |
| Feb | 24.6 | 13.0 | 22mm | 10.0 |
| Mar | 22.6 | 11.9 | 24mm | 9.4 |
| Apr | 18.2 | 8.8 | 67mm | 5.6 |
| May | 15.1 | 7.6 | 59mm | 2.7 |
| Jun | 12.3 | 6.5 | 40mm | 1.0 |
| Jul | 12.3 | 5.3 | 92mm | 1.0 |
| Aug | 15.1 | 7.6 | 64mm | 2.9 |
| Sep | 15.8 | 7.2 | 46mm | 4.1 |
| Oct | 17.9 | 8.0 | 54mm | 6.0 |
| Nov | 19.8 | 10.6 | 77mm | 7.3 |
| Dec | 21.9 | 12.5 | 95mm | 8.8 |