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The best time to visit Swansea

Month-by-month climate averages for Swansea, Wales, so you can pick your dates on data rather than guesswork.

Short answer

The most comfortable time to visit Swansea is usually May, June, July and August, when daytime highs sit in the pleasant 16-26°C range and the heaviest March rain is behind you.

Swansea is warmest in June (highs near 19°C) and coldest in January (lows around 3°C), with roughly 1786 mm of precipitation across the year and March the wettest month. The sweet spot for most visitors is May, June, July and August.

These are long-run averages. For the actual days you are travelling, check the live Swansea forecast — and note how much the models agree, because that tells you how much to trust it.

Swansea weather by month

what to expect in Swansea through the year

Here is Swansea's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Swansea by season.

Jan
8°
3°
Cool
Feb
10°
5°
Cool
Mar
10°
5°
Cool
Wettest
Apr
12°
6°
Cool
May
17°
10°
Mild
Jun
19°
12°
Mild
Jul
18°
13°
Mild
Aug
19°
13°
Mild
Sep
18°
13°
Mild
Oct
15°
10°
Mild
Nov
11°
6°
Cool
Dec
10°
6°
Cool

Common questions

When is the best time to visit Swansea?
The most comfortable time to visit Swansea is usually May, June, July and August, when daytime highs sit in the pleasant 16-26°C range and the heaviest March rain is behind you.
What is the warmest month in Swansea?
June is the warmest month in Swansea, averaging highs near 19°C.
What is the coldest month in Swansea?
January is the coldest month in Swansea, with lows around 3°C.
When is the rainy season in Swansea?
The wettest month in Swansea is usually March, out of roughly 1786 mm of precipitation across the year.

Swansea month by month

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember