Barmouth weather by month

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

Temperature in Barmouth (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
6°C maximum daytime temperature in January in Barmouth6
6°C maximum daytime temperature in February in Barmouth6
8°C maximum daytime temperature in March in Barmouth8
11°C maximum daytime temperature in April in Barmouth11
14°C maximum daytime temperature in May in Barmouth14
16°C maximum daytime temperature in June in Barmouth16
18°C maximum daytime temperature in July in Barmouth18
18°C maximum daytime temperature in August in Barmouth18
16°C maximum daytime temperature in September in Barmouth16
13°C maximum daytime temperature in October in Barmouth13
9°C maximum daytime temperature in November in Barmouth9
7°C maximum daytime temperature in December in Barmouth7
Min temperature (night-time)
1°C minimum night-time temperature in January in Barmouth1
1°C minimum night-time temperature in February in Barmouth1
2°C minimum night-time temperature in March in Barmouth2
3°C minimum night-time temperature in April in Barmouth3
6°C minimum night-time temperature in May in Barmouth6
9°C minimum night-time temperature in June in Barmouth9
11°C minimum night-time temperature in July in Barmouth11
11°C minimum night-time temperature in August in Barmouth11
9°C minimum night-time temperature in September in Barmouth9
7°C minimum night-time temperature in October in Barmouth7
4°C minimum night-time temperature in November in Barmouth4
2°C minimum night-time temperature in December in Barmouth2
Heat & Humidity
No heat & humidity in January in Barmouth0
No heat & humidity in February in Barmouth0
No heat & humidity in March in Barmouth0
No heat & humidity in April in Barmouth0
No heat & humidity in May in Barmouth0
No heat & humidity in June in Barmouth0
No heat & humidity in July in Barmouth0
No heat & humidity in August in Barmouth0
No heat & humidity in September in Barmouth0
No heat & humidity in October in Barmouth0
No heat & humidity in November in Barmouth0
No heat & humidity in December in Barmouth0
Sea temperature
7°C sea temperature in January in Barmouth7
7°C sea temperature in February in Barmouth7
7°C sea temperature in March in Barmouth7
9°C sea temperature in April in Barmouth9
12°C sea temperature in May in Barmouth12
14°C sea temperature in June in Barmouth14
16°C sea temperature in July in Barmouth16
17°C sea temperature in August in Barmouth17
16°C sea temperature in September in Barmouth16
14°C sea temperature in October in Barmouth14
11°C sea temperature in November in Barmouth11
9°C sea temperature in December in Barmouth9

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

Sunshine & UV index in Barmouth

  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 Barmouth8
10 hours of daylight per day in February in Barmouth10
12 hours of daylight per day in March in Barmouth12
14 hours of daylight per day in April in Barmouth14
16 hours of daylight per day in May in Barmouth16
17 hours of daylight per day in June in Barmouth17
16 hours of daylight per day in July in Barmouth16
15 hours of daylight per day in August in Barmouth15
13 hours of daylight per day in September in Barmouth13
11 hours of daylight per day in October in Barmouth11
9 hours of daylight per day in November in Barmouth9
8 hours of daylight per day in December in Barmouth8
UV Index (Maximum)
UV (maximum) index 1 (Low) in January in Barmouth1
UV (maximum) index 1 (Low) in February in Barmouth1
UV (maximum) index 2 (Low) in March in Barmouth2
UV (maximum) index 4 (Moderate) in April in Barmouth4
UV (maximum) index 5 (Moderate) in May in Barmouth5
UV (maximum) index 6 (High) in June in Barmouth6
UV (maximum) index 6 (High) in July in Barmouth6
UV (maximum) index 5 (Moderate) in August in Barmouth5
UV (maximum) index 4 (Moderate) in September in Barmouth4
UV (maximum) index 2 (Low) in October in Barmouth2
UV (maximum) index 1 (Low) in November in Barmouth1
No UV (maximum) index in December in Barmouth0

Rainfall in Barmouth

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
21 days with some rainfall in January in Barmouth21
16 days with some rainfall in February in Barmouth16
18 days with some rainfall in March in Barmouth18
15 days with some rainfall in April in Barmouth15
16 days with some rainfall in May in Barmouth16
14 days with some rainfall in June in Barmouth14
13 days with some rainfall in July in Barmouth13
16 days with some rainfall in August in Barmouth16
16 days with some rainfall in September in Barmouth16
18 days with some rainfall in October in Barmouth18
20 days with some rainfall in November in Barmouth20
20 days with some rainfall in December in Barmouth20
Average monthly rainfall (mm)
189 mm monthly rainfall in January in Barmouth189
128 mm monthly rainfall in February in Barmouth128
149 mm monthly rainfall in March in Barmouth149
106 mm monthly rainfall in April in Barmouth106
101 mm monthly rainfall in May in Barmouth101
107 mm monthly rainfall in June in Barmouth107
110 mm monthly rainfall in July in Barmouth110
146 mm monthly rainfall in August in Barmouth146
161 mm monthly rainfall in September in Barmouth161
194 mm monthly rainfall in October in Barmouth194
207 mm monthly rainfall in November in Barmouth207
213 mm monthly rainfall in December in Barmouth213

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Barmouth by month

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

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The climate guide for Wales (Barmouth) 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 Barmouth?

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

Barmouth weather in January

Expect daytime maximum temperatures of 6°C in Barmouth, Wales in January based on long-term weather averages. There is 1 hour of sunshine per day on average with 21 days with some rainfall and typically 189 mm of rainfall in the month.

  • 6°C maximum daytime temperature in January in Barmouth6
    6°C max day temperature
  • 1 hour of sunshine per day
  • 21 days with some rainfall in January in Barmouth21
    21 days with some rainfall
  • 1°C minimum night-time temperature in January in Barmouth1
    1°C min night temperature
  • 8 hours of daylight per day in January in Barmouth8
    8 hours of daylight per day
  • No heat & humidity in January in Barmouth0
    No heat & humidity
  • 189 mm monthly rainfall in January in Barmouth189
    189 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Barmouth1
    1 (Low) UV index
  • 7°C sea temperature in January in Barmouth7
    7°C sea temperature

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Barmouth weather in February

Expect daytime maximum temperatures of 6°C in Barmouth, Wales in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 16 days with some rainfall and typically 128 mm of rainfall in the month.

  • 6°C maximum daytime temperature in February in Barmouth6
    6°C max day temperature
  • 2 hours of sunshine per day
  • 16 days with some rainfall in February in Barmouth16
    16 days with some rainfall
  • 1°C minimum night-time temperature in February in Barmouth1
    1°C min night temperature
  • 10 hours of daylight per day in February in Barmouth10
    10 hours of daylight per day
  • No heat & humidity in February in Barmouth0
    No heat & humidity
  • 128 mm monthly rainfall in February in Barmouth128
    128 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in February in Barmouth1
    1 (Low) UV index
  • 7°C sea temperature in February in Barmouth7
    7°C sea temperature

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Barmouth weather in March

Expect daytime maximum temperatures of 8°C in Barmouth, Wales in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 18 days with some rainfall and typically 149 mm of rainfall in the month.

  • 8°C maximum daytime temperature in March in Barmouth8
    8°C max day temperature
  • 3 hours of sunshine per day
  • 18 days with some rainfall in March in Barmouth18
    18 days with some rainfall
  • 2°C minimum night-time temperature in March in Barmouth2
    2°C min night temperature
  • 12 hours of daylight per day in March in Barmouth12
    12 hours of daylight per day
  • No heat & humidity in March in Barmouth0
    No heat & humidity
  • 149 mm monthly rainfall in March in Barmouth149
    149 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in March in Barmouth2
    2 (Low) UV index
  • 7°C sea temperature in March in Barmouth7
    7°C sea temperature

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Barmouth weather in April

Expect daytime maximum temperatures of 11°C in Barmouth, Wales in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 106 mm of rainfall in the month.

  • 11°C maximum daytime temperature in April in Barmouth11
    11°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in April in Barmouth15
    15 days with some rainfall
  • 3°C minimum night-time temperature in April in Barmouth3
    3°C min night temperature
  • 14 hours of daylight per day in April in Barmouth14
    14 hours of daylight per day
  • No heat & humidity in April in Barmouth0
    No heat & humidity
  • 106 mm monthly rainfall in April in Barmouth106
    106 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in April in Barmouth4
    4 (Moderate) UV index
  • 9°C sea temperature in April in Barmouth9
    9°C sea temperature

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Barmouth weather in May

Expect daytime maximum temperatures of 14°C in Barmouth, Wales in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 101 mm of rainfall in the month.

  • 14°C maximum daytime temperature in May in Barmouth14
    14°C max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in May in Barmouth16
    16 days with some rainfall
  • 6°C minimum night-time temperature in May in Barmouth6
    6°C min night temperature
  • 16 hours of daylight per day in May in Barmouth16
    16 hours of daylight per day
  • No heat & humidity in May in Barmouth0
    No heat & humidity
  • 101 mm monthly rainfall in May in Barmouth101
    101 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Barmouth5
    5 (Moderate) UV index
  • 12°C sea temperature in May in Barmouth12
    12°C sea temperature

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Barmouth weather in June

Expect daytime maximum temperatures of 16°C in Barmouth, Wales in June based on long-term weather averages. There are 6 hours of sunshine per day on average with 14 days with some rainfall and typically 107 mm of rainfall in the month.

  • 16°C maximum daytime temperature in June in Barmouth16
    16°C max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in June in Barmouth14
    14 days with some rainfall
  • 9°C minimum night-time temperature in June in Barmouth9
    9°C min night temperature
  • 17 hours of daylight per day in June in Barmouth17
    17 hours of daylight per day
  • No heat & humidity in June in Barmouth0
    No heat & humidity
  • 107 mm monthly rainfall in June in Barmouth107
    107 mm of monthly rainfall
  • UV (maximum) index 6 (High) in June in Barmouth6
    6 (High) UV index
  • 14°C sea temperature in June in Barmouth14
    14°C sea temperature

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Barmouth weather in July

Expect daytime maximum temperatures of 18°C in Barmouth, Wales in July based on long-term weather averages. There are 5 hours of sunshine per day on average with 13 days with some rainfall and typically 110 mm of rainfall in the month.

  • 18°C maximum daytime temperature in July in Barmouth18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 13 days with some rainfall in July in Barmouth13
    13 days with some rainfall
  • 11°C minimum night-time temperature in July in Barmouth11
    11°C min night temperature
  • 16 hours of daylight per day in July in Barmouth16
    16 hours of daylight per day
  • No heat & humidity in July in Barmouth0
    No heat & humidity
  • 110 mm monthly rainfall in July in Barmouth110
    110 mm of monthly rainfall
  • UV (maximum) index 6 (High) in July in Barmouth6
    6 (High) UV index
  • 16°C sea temperature in July in Barmouth16
    16°C sea temperature

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Barmouth weather in August

Expect daytime maximum temperatures of 18°C in Barmouth, Wales in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 16 days with some rainfall and typically 146 mm of rainfall in the month.

  • 18°C maximum daytime temperature in August in Barmouth18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in August in Barmouth16
    16 days with some rainfall
  • 11°C minimum night-time temperature in August in Barmouth11
    11°C min night temperature
  • 15 hours of daylight per day in August in Barmouth15
    15 hours of daylight per day
  • No heat & humidity in August in Barmouth0
    No heat & humidity
  • 146 mm monthly rainfall in August in Barmouth146
    146 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Barmouth5
    5 (Moderate) UV index
  • 17°C sea temperature in August in Barmouth17
    17°C sea temperature

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Barmouth weather in September

Expect daytime maximum temperatures of 16°C in Barmouth, Wales in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 16 days with some rainfall and typically 161 mm of rainfall in the month.

  • 16°C maximum daytime temperature in September in Barmouth16
    16°C max day temperature
  • 4 hours of sunshine per day
  • 16 days with some rainfall in September in Barmouth16
    16 days with some rainfall
  • 9°C minimum night-time temperature in September in Barmouth9
    9°C min night temperature
  • 13 hours of daylight per day in September in Barmouth13
    13 hours of daylight per day
  • No heat & humidity in September in Barmouth0
    No heat & humidity
  • 161 mm monthly rainfall in September in Barmouth161
    161 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Barmouth4
    4 (Moderate) UV index
  • 16°C sea temperature in September in Barmouth16
    16°C sea temperature

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Barmouth weather in October

Expect daytime maximum temperatures of 13°C in Barmouth, Wales in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 18 days with some rainfall and typically 194 mm of rainfall in the month.

  • 13°C maximum daytime temperature in October in Barmouth13
    13°C max day temperature
  • 3 hours of sunshine per day
  • 18 days with some rainfall in October in Barmouth18
    18 days with some rainfall
  • 7°C minimum night-time temperature in October in Barmouth7
    7°C min night temperature
  • 11 hours of daylight per day in October in Barmouth11
    11 hours of daylight per day
  • No heat & humidity in October in Barmouth0
    No heat & humidity
  • 194 mm monthly rainfall in October in Barmouth194
    194 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in October in Barmouth2
    2 (Low) UV index
  • 14°C sea temperature in October in Barmouth14
    14°C sea temperature

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Barmouth weather in November

Expect daytime maximum temperatures of 9°C in Barmouth, Wales in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 207 mm of rainfall in the month.

  • 9°C maximum daytime temperature in November in Barmouth9
    9°C max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in November in Barmouth20
    20 days with some rainfall
  • 4°C minimum night-time temperature in November in Barmouth4
    4°C min night temperature
  • 9 hours of daylight per day in November in Barmouth9
    9 hours of daylight per day
  • No heat & humidity in November in Barmouth0
    No heat & humidity
  • 207 mm monthly rainfall in November in Barmouth207
    207 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in November in Barmouth1
    1 (Low) UV index
  • 11°C sea temperature in November in Barmouth11
    11°C sea temperature

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Barmouth weather in December

Expect daytime maximum temperatures of 7°C in Barmouth, Wales in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 20 days with some rainfall and typically 213 mm of rainfall in the month.

  • 7°C maximum daytime temperature in December in Barmouth7
    7°C max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in December in Barmouth20
    20 days with some rainfall
  • 2°C minimum night-time temperature in December in Barmouth2
    2°C min night temperature
  • 8 hours of daylight per day in December in Barmouth8
    8 hours of daylight per day
  • No heat & humidity in December in Barmouth0
    No heat & humidity
  • 213 mm monthly rainfall in December in Barmouth213
    213 mm of monthly rainfall
  • No UV (maximum) index in December in Barmouth0
    No UV (Maximum) Index UV index
  • 9°C sea temperature in December in Barmouth9
    9°C sea temperature

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More about Barmouth

Barmouth by month

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

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Show discount codeShow discount code ******SB8

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The climate guide for Wales (Barmouth) 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.

Metric (°C / mm)  |  Imperial (°F / inches)

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Compare Barmouth weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Barmouth, Gwynedd, Wales and the UK (London).

Maximum daytime temperature (°C)

Barmouth, Gwynedd, Wales
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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