Swansea weather

The Swansea weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for Swansea, Swansea Area, Wales.

Swansea weather averages

Check the Swansea weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Swansea, Swansea Area, Wales.

Max Day Temperature (°C)

Hours of Sunshine (daily)

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

Days with some Rainfall

Min Night Temperature (°C)

Monthly Rainfall (mm)

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Swansea weather by month

Check the weather for Swansea, Swansea Area, Wales for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.

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Swansea weather in January

The average maximum daytime temperature in Swansea in January is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 2 hours of sunshine a day in Swansea during January.

  • 6°C maximum daytime temperature in January in Swansea6
    6°C max day temperature
  • 2 hours of sunshine per day in January in Swansea2
    2 hours of sunshine per day
  • 21 days with some rainfall in January in Swansea21
    21 days with some rainfall
  • 2°C minimum night-time temperature in January in Swansea2
    2°C min night temperature
  • 227 mm monthly rainfall in January in Swansea227
    227 mm of monthly rainfall

On average 227 mm (8.9 inches) of rain normally falls in Swansea during January with rain falling on 21 days of the month.

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Swansea weather in February

The average maximum daytime temperature in Swansea in February is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Swansea during February.

  • 6°C maximum daytime temperature in February in Swansea6
    6°C max day temperature
  • 3 hours of sunshine per day in February in Swansea3
    3 hours of sunshine per day
  • 17 days with some rainfall in February in Swansea17
    17 days with some rainfall
  • 2°C minimum night-time temperature in February in Swansea2
    2°C min night temperature
  • 157 mm monthly rainfall in February in Swansea157
    157 mm of monthly rainfall

On average 157 mm (6.2 inches) of rain normally falls in Swansea during February with rain falling on 17 days of the month.

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Swansea weather in March

The average maximum daytime temperature in Swansea in March is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 4 hours of sunshine a day in Swansea during March.

  • 8°C maximum daytime temperature in March in Swansea8
    8°C max day temperature
  • 4 hours of sunshine per day in March in Swansea4
    4 hours of sunshine per day
  • 18 days with some rainfall in March in Swansea18
    18 days with some rainfall
  • 3°C minimum night-time temperature in March in Swansea3
    3°C min night temperature
  • 162 mm monthly rainfall in March in Swansea162
    162 mm of monthly rainfall

On average 162 mm (6.4 inches) of rain normally falls in Swansea during March with rain falling on 18 days of the month.

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Swansea weather in April

The average maximum daytime temperature in Swansea in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 6 hours of sunshine a day in Swansea during April.

  • 11°C maximum daytime temperature in April in Swansea11
    11°C max day temperature
  • 6 hours of sunshine per day in April in Swansea6
    6 hours of sunshine per day
  • 15 days with some rainfall in April in Swansea15
    15 days with some rainfall
  • 4°C minimum night-time temperature in April in Swansea4
    4°C min night temperature
  • 113 mm monthly rainfall in April in Swansea113
    113 mm of monthly rainfall

On average 113 mm (4.4 inches) of rain normally falls in Swansea during April with rain falling on 15 days of the month.

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Swansea weather in May

The average maximum daytime temperature in Swansea in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 7 hours of sunshine a day in Swansea during May.

  • 14°C maximum daytime temperature in May in Swansea14
    14°C max day temperature
  • 7 hours of sunshine per day in May in Swansea7
    7 hours of sunshine per day
  • 14 days with some rainfall in May in Swansea14
    14 days with some rainfall
  • 7°C minimum night-time temperature in May in Swansea7
    7°C min night temperature
  • 105 mm monthly rainfall in May in Swansea105
    105 mm of monthly rainfall

On average 105 mm (4.1 inches) of rain normally falls in Swansea during May with rain falling on 14 days of the month.

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Swansea weather in June

The average maximum daytime temperature in Swansea in June is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 7 hours of sunshine a day in Swansea during June.

  • 17°C maximum daytime temperature in June in Swansea17
    17°C max day temperature
  • 7 hours of sunshine per day in June in Swansea7
    7 hours of sunshine per day
  • 15 days with some rainfall in June in Swansea15
    15 days with some rainfall
  • 9°C minimum night-time temperature in June in Swansea9
    9°C min night temperature
  • 118 mm monthly rainfall in June in Swansea118
    118 mm of monthly rainfall

On average 118 mm (4.6 inches) of rain normally falls in Swansea during June with rain falling on 15 days of the month.

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Swansea weather in July

The average maximum daytime temperature in Swansea in July is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 6 hours of sunshine a day in Swansea during July.

  • 19°C maximum daytime temperature in July in Swansea19
    19°C max day temperature
  • 6 hours of sunshine per day in July in Swansea6
    6 hours of sunshine per day
  • 14 days with some rainfall in July in Swansea14
    14 days with some rainfall
  • 12°C minimum night-time temperature in July in Swansea12
    12°C min night temperature
  • 104 mm monthly rainfall in July in Swansea104
    104 mm of monthly rainfall

On average 104 mm (4.1 inches) of rain normally falls in Swansea during July with rain falling on 14 days of the month.

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Swansea weather in August

The average maximum daytime temperature in Swansea in August is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 6 hours of sunshine a day in Swansea during August.

  • 19°C maximum daytime temperature in August in Swansea19
    19°C max day temperature
  • 6 hours of sunshine per day in August in Swansea6
    6 hours of sunshine per day
  • 16 days with some rainfall in August in Swansea16
    16 days with some rainfall
  • 12°C minimum night-time temperature in August in Swansea12
    12°C min night temperature
  • 152 mm monthly rainfall in August in Swansea152
    152 mm of monthly rainfall

On average 152 mm (6 inches) of rain normally falls in Swansea during August with rain falling on 16 days of the month.

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Swansea weather in September

The average maximum daytime temperature in Swansea in September is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 5 hours of sunshine a day in Swansea during September.

  • 16°C maximum daytime temperature in September in Swansea16
    16°C max day temperature
  • 5 hours of sunshine per day in September in Swansea5
    5 hours of sunshine per day
  • 17 days with some rainfall in September in Swansea17
    17 days with some rainfall
  • 10°C minimum night-time temperature in September in Swansea10
    10°C min night temperature
  • 165 mm monthly rainfall in September in Swansea165
    165 mm of monthly rainfall

On average 165 mm (6.5 inches) of rain normally falls in Swansea during September with rain falling on 17 days of the month.

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Swansea weather in October

The average maximum daytime temperature in Swansea in October is a cool 13°C (55°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 3 hours of sunshine a day in Swansea during October.

  • 13°C maximum daytime temperature in October in Swansea13
    13°C max day temperature
  • 3 hours of sunshine per day in October in Swansea3
    3 hours of sunshine per day
  • 19 days with some rainfall in October in Swansea19
    19 days with some rainfall
  • 7°C minimum night-time temperature in October in Swansea7
    7°C min night temperature
  • 200 mm monthly rainfall in October in Swansea200
    200 mm of monthly rainfall

On average 200 mm (7.9 inches) of rain normally falls in Swansea during October with rain falling on 19 days of the month.

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Swansea weather in November

The average maximum daytime temperature in Swansea in November is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 2 hours of sunshine a day in Swansea during November.

  • 9°C maximum daytime temperature in November in Swansea9
    9°C max day temperature
  • 2 hours of sunshine per day in November in Swansea2
    2 hours of sunshine per day
  • 20 days with some rainfall in November in Swansea20
    20 days with some rainfall
  • 4°C minimum night-time temperature in November in Swansea4
    4°C min night temperature
  • 225 mm monthly rainfall in November in Swansea225
    225 mm of monthly rainfall

On average 225 mm (8.9 inches) of rain normally falls in Swansea during November with rain falling on 20 days of the month.

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Swansea weather in December

The average maximum daytime temperature in Swansea in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Swansea during December.

  • 7°C maximum daytime temperature in December in Swansea7
    7°C max day temperature
  • 2 hours of sunshine per day in December in Swansea2
    2 hours of sunshine per day
  • 21 days with some rainfall in December in Swansea21
    21 days with some rainfall
  • 3°C minimum night-time temperature in December in Swansea3
    3°C min night temperature
  • 243 mm monthly rainfall in December in Swansea243
    243 mm of monthly rainfall

On average 243 mm (9.6 inches) of rain normally falls in Swansea during December with rain falling on 21 days of the month.

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