Trearddur Bay weather

The Trearddur Bay weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Trearddur Bay, Anglesey, Wales in 2026/2027.

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Trearddur Bay weather averages

Check the Trearddur Bay 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 Trearddur Bay, Anglesey, Wales.

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Trearddur Bay weather by month

Check the weather for Trearddur Bay, Anglesey, 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.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December

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Trearddur Bay weather in January

The average maximum daytime temperature in Trearddur Bay in January is a cold 7°C (45°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 Trearddur Bay during January.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 21
  21 days with some rainfall
• 2
  2°C min night temperature
• 200
  200 mm of monthly rainfall

On average 200 mm (7.9 inches) of rain normally falls in Trearddur Bay during January with rain falling on 21 days of the month.

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Trearddur Bay weather in February

The average maximum daytime temperature in Trearddur Bay in February is a cool 8°C (46°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 Trearddur Bay during February.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 17
  17 days with some rainfall
• 2
  2°C min night temperature
• 145
  145 mm of monthly rainfall

On average 145 mm (5.7 inches) of rain normally falls in Trearddur Bay during February with rain falling on 17 days of the month.

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Trearddur Bay weather in March

The average maximum daytime temperature in Trearddur Bay in March is a cool 9°C (48°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 Trearddur Bay during March.

• 9
  9°C max day temperature
• 4
  4 hours of sunshine per day
• 19
  19 days with some rainfall
• 3
  3°C min night temperature
• 158
  158 mm of monthly rainfall

On average 158 mm (6.2 inches) of rain normally falls in Trearddur Bay during March with rain falling on 19 days of the month.

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Trearddur Bay weather in April

The average maximum daytime temperature in Trearddur Bay in April is a cool 12°C (54°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 Trearddur Bay during April.

• 12
  12°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 4
  4°C min night temperature
• 104
  104 mm of monthly rainfall

On average 104 mm (4.1 inches) of rain normally falls in Trearddur Bay during April with rain falling on 16 days of the month.

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Trearddur Bay weather in May

The average maximum daytime temperature in Trearddur Bay in May is a comfortable 15°C (59°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 Trearddur Bay during May.

• 15
  15°C max day temperature
• 7
  7 hours of sunshine per day
• 15
  15 days with some rainfall
• 7
  7°C min night temperature
• 100
  100 mm of monthly rainfall

On average 100 mm (3.9 inches) of rain normally falls in Trearddur Bay during May with rain falling on 15 days of the month.

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Trearddur Bay weather in June

The average maximum daytime temperature in Trearddur Bay 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 Trearddur Bay during June.

• 17
  17°C max day temperature
• 7
  7 hours of sunshine per day
• 14
  14 days with some rainfall
• 9
  9°C min night temperature
• 106
  106 mm of monthly rainfall

On average 106 mm (4.2 inches) of rain normally falls in Trearddur Bay during June with rain falling on 14 days of the month.

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Trearddur Bay weather in July

The average maximum daytime temperature in Trearddur Bay 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 Trearddur Bay during July.

• 19
  19°C max day temperature
• 6
  6 hours of sunshine per day
• 14
  14 days with some rainfall
• 12
  12°C min night temperature
• 99
  99 mm of monthly rainfall

On average 99 mm (3.9 inches) of rain normally falls in Trearddur Bay during July with rain falling on 14 days of the month.

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Trearddur Bay weather in August

The average maximum daytime temperature in Trearddur Bay in August is a comfortable 19°C (66°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 6 hours of sunshine a day in Trearddur Bay during August.

• 19
  19°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 11
  11°C min night temperature
• 128
  128 mm of monthly rainfall

On average 128 mm (5 inches) of rain normally falls in Trearddur Bay during August with rain falling on 16 days of the month.

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Trearddur Bay weather in September

The average maximum daytime temperature in Trearddur Bay in September is a comfortable 17°C (63°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 Trearddur Bay during September.

• 17
  17°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 10
  10°C min night temperature
• 165
  165 mm of monthly rainfall

On average 165 mm (6.5 inches) of rain normally falls in Trearddur Bay during September with rain falling on 16 days of the month.

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Trearddur Bay weather in October

The average maximum daytime temperature in Trearddur Bay 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 Trearddur Bay during October.

• 13
  13°C max day temperature
• 3
  3 hours of sunshine per day
• 19
  19 days with some rainfall
• 7
  7°C min night temperature
• 196
  196 mm of monthly rainfall

On average 196 mm (7.7 inches) of rain normally falls in Trearddur Bay during October with rain falling on 19 days of the month.

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Trearddur Bay weather in November

The average maximum daytime temperature in Trearddur Bay in November is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 2 hours of sunshine a day in Trearddur Bay during November.

• 10
  10°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 5
  5°C min night temperature
• 194
  194 mm of monthly rainfall

On average 194 mm (7.6 inches) of rain normally falls in Trearddur Bay during November with rain falling on 20 days of the month.

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Trearddur Bay weather in December

The average maximum daytime temperature in Trearddur Bay in December 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 2 hours of sunshine a day in Trearddur Bay during December.

• 8
  8°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 3
  3°C min night temperature
• 215
  215 mm of monthly rainfall

On average 215 mm (8.5 inches) of rain normally falls in Trearddur Bay during December with rain falling on 20 days of the month.

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