Which is the hottest month in Swansea?

The hottest time of year in Swansea is normally July. Expect maximum daytime temperatures to reach 20°C.

Which month has the most rain in Swansea?

In terms of rainfall, December is usually the wettest month in Swansea with 140mm on average. There are normally 20 days in December with some rain.

When is it sunniest in Swansea?

The sunniest time of year in Swansea is normally May with bright sunshine on average for 41% of daylight hours; that's 7 hours of sunshine per day.

When is the sea warmest in Swansea?

The sea is usually at its warmest in Swansea in August when the water temperature reaches 18°C.

Best time to visit Swansea

Q: When is the best time to visit Swansea?

The best time to visit Swansea is July and August based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Find the best time to visit Swansea and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Swansea by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Wales

Marriott discount code: up to 20% off hotel stays

Discount Code

Save up to 20% when you book long stays with Marriott
20% off - 4-6 nights, 15% off 3 nights
Book hotels in Europe, the Middle East & Africa

Show discount code

******UK8

Redeem Marriott discount code >>

View all Marriott offers

When is the best time to visit Swansea?

The best time to visit Swansea is July and August based on the following average weather conditions.

Maximum daytime temperature = 72 - 86°F [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0
Feb
0.5
Mar
1.5
Apr
1.5
May
2.5
Jun
3
Jul
3
Aug
1
Sep
0
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°F)

45
Jan
45
Feb
48
Mar
54
Apr
59
May
64
Jun
68
Jul
68
Aug
63
Sep
57
Oct
52
Nov
46
Dec

Hours of Sunshine (daily)

2
Jan
3
Feb
4
Mar
6
Apr
7
May
7
Jun
6
Jul
6
Aug
5
Sep
3
Oct
2
Nov
2
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Wales (Swansea) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C) | Imperial (°F)