Swansea weather by month

Check out Swansea weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Swansea (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
45°F maximum daytime temperature in January in Swansea45
45°F maximum daytime temperature in February in Swansea45
48°F maximum daytime temperature in March in Swansea48
54°F maximum daytime temperature in April in Swansea54
59°F maximum daytime temperature in May in Swansea59
64°F maximum daytime temperature in June in Swansea64
68°F maximum daytime temperature in July in Swansea68
68°F maximum daytime temperature in August in Swansea68
63°F maximum daytime temperature in September in Swansea63
57°F maximum daytime temperature in October in Swansea57
52°F maximum daytime temperature in November in Swansea52
46°F maximum daytime temperature in December in Swansea46
Min temperature (night-time)
37°F minimum night-time temperature in January in Swansea37
37°F minimum night-time temperature in February in Swansea37
39°F minimum night-time temperature in March in Swansea39
41°F minimum night-time temperature in April in Swansea41
46°F minimum night-time temperature in May in Swansea46
52°F minimum night-time temperature in June in Swansea52
55°F minimum night-time temperature in July in Swansea55
55°F minimum night-time temperature in August in Swansea55
52°F minimum night-time temperature in September in Swansea52
48°F minimum night-time temperature in October in Swansea48
41°F minimum night-time temperature in November in Swansea41
39°F minimum night-time temperature in December in Swansea39
Heat & Humidity
No heat & humidity in January in Swansea0
No heat & humidity in February in Swansea0
No heat & humidity in March in Swansea0
No heat & humidity in April in Swansea0
No heat & humidity in May in Swansea0
No heat & humidity in June in Swansea0
No heat & humidity in July in Swansea0
No heat & humidity in August in Swansea0
No heat & humidity in September in Swansea0
No heat & humidity in October in Swansea0
No heat & humidity in November in Swansea0
No heat & humidity in December in Swansea0
Sea temperature
46°F sea temperature in January in Swansea46
46°F sea temperature in February in Swansea46
46°F sea temperature in March in Swansea46
48°F sea temperature in April in Swansea48
52°F sea temperature in May in Swansea52
57°F sea temperature in June in Swansea57
61°F sea temperature in July in Swansea61
64°F sea temperature in August in Swansea64
63°F sea temperature in September in Swansea63
59°F sea temperature in October in Swansea59
54°F sea temperature in November in Swansea54
50°F sea temperature in December in Swansea50

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Swansea

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
8 hours of daylight per day in January in Swansea8
10 hours of daylight per day in February in Swansea10
12 hours of daylight per day in March in Swansea12
14 hours of daylight per day in April in Swansea14
16 hours of daylight per day in May in Swansea16
17 hours of daylight per day in June in Swansea17
16 hours of daylight per day in July in Swansea16
15 hours of daylight per day in August in Swansea15
13 hours of daylight per day in September in Swansea13
11 hours of daylight per day in October in Swansea11
9 hours of daylight per day in November in Swansea9
8 hours of daylight per day in December in Swansea8
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Swansea1
UV (maximum) index 1 (Low) in February in Swansea1
UV (maximum) index 2 (Low) in March in Swansea2
UV (maximum) index 4 (Moderate) in April in Swansea4
UV (maximum) index 5 (Moderate) in May in Swansea5
UV (maximum) index 6 (High) in June in Swansea6
UV (maximum) index 6 (High) in July in Swansea6
UV (maximum) index 6 (High) in August in Swansea6
UV (maximum) index 4 (Moderate) in September in Swansea4
UV (maximum) index 2 (Low) in October in Swansea2
UV (maximum) index 1 (Low) in November in Swansea1
No UV (maximum) index in December in Swansea0

Rainfall in Swansea

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
20 days with some rainfall in January in Swansea20
15 days with some rainfall in February in Swansea15
18 days with some rainfall in March in Swansea18
14 days with some rainfall in April in Swansea14
15 days with some rainfall in May in Swansea15
15 days with some rainfall in June in Swansea15
13 days with some rainfall in July in Swansea13
16 days with some rainfall in August in Swansea16
16 days with some rainfall in September in Swansea16
19 days with some rainfall in October in Swansea19
20 days with some rainfall in November in Swansea20
20 days with some rainfall in December in Swansea20
Average monthly rainfall (inches)
5.2 inches monthly rainfall in January in Swansea5.2
3.5 inches monthly rainfall in February in Swansea3.5
3.8 inches monthly rainfall in March in Swansea3.8
2.7 inches monthly rainfall in April in Swansea2.7
3.0 inches monthly rainfall in May in Swansea3.0
3.1 inches monthly rainfall in June in Swansea3.1
3.0 inches monthly rainfall in July in Swansea3.0
4.1 inches monthly rainfall in August in Swansea4.1
4.4 inches monthly rainfall in September in Swansea4.4
5.1 inches monthly rainfall in October in Swansea5.1
5.4 inches monthly rainfall in November in Swansea5.4
5.5 inches monthly rainfall in December in Swansea5.5

More about Swansea

Swansea by month

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

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The climate guide for Wales (Swansea) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Swansea?

Swansea has a temperate climate with warm summers and some rainfall in all months.

Metric (°C)  |  Imperial (°F)

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More about Wales

Compare Swansea with the UK

Below the Swansea chart shows average maximum daytime temperature for Swansea, Wales, UK and the UK (London).

Maximum daytime temperature (°F)

Swansea, Wales, UK
UK (London)
45
45
45
45
48
50
54
55
59
63
64
68
68
72
68
72
63
66
57
59
52
50
46
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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