Sealand weather

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

• Sealand weather averages
• Sealand weather by month
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Sealand weather averages

Check the Sealand 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 Sealand, Flintshire, Wales.

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Sealand weather by month

Check the weather for Sealand, Flintshire, 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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Sealand weather in January

The average maximum daytime temperature in Sealand 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 Sealand during January.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 19
  19 days with some rainfall
• 2
  2°C min night temperature
• 77
  77 mm of monthly rainfall

On average 77 mm (3 inches) of rain normally falls in Sealand during January with rain falling on 19 days of the month.

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Sealand weather in February

The average maximum daytime temperature in Sealand in February 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 Sealand during February.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 16
  16 days with some rainfall
• 2
  2°C min night temperature
• 53
  53 mm of monthly rainfall

On average 53 mm (2.1 inches) of rain normally falls in Sealand during February with rain falling on 16 days of the month.

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Sealand weather in March

The average maximum daytime temperature in Sealand 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 3 hours of sunshine a day in Sealand during March.

• 9
  9°C max day temperature
• 3
  3 hours of sunshine per day
• 17
  17 days with some rainfall
• 3
  3°C min night temperature
• 62
  62 mm of monthly rainfall

On average 62 mm (2.4 inches) of rain normally falls in Sealand during March with rain falling on 17 days of the month.

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Sealand weather in April

The average maximum daytime temperature in Sealand 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 5 hours of sunshine a day in Sealand during April.

• 12
  12°C max day temperature
• 5
  5 hours of sunshine per day
• 15
  15 days with some rainfall
• 4
  4°C min night temperature
• 58
  58 mm of monthly rainfall

On average 58 mm (2.3 inches) of rain normally falls in Sealand during April with rain falling on 15 days of the month.

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Sealand weather in May

The average maximum daytime temperature in Sealand in May is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 6 hours of sunshine a day in Sealand during May.

• 16
  16°C max day temperature
• 6
  6 hours of sunshine per day
• 15
  15 days with some rainfall
• 7
  7°C min night temperature
• 64
  64 mm of monthly rainfall

On average 64 mm (2.5 inches) of rain normally falls in Sealand during May with rain falling on 15 days of the month.

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Sealand weather in June

The average maximum daytime temperature in Sealand in June is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 6 hours of sunshine a day in Sealand during June.

• 18
  18°C max day temperature
• 6
  6 hours of sunshine per day
• 15
  15 days with some rainfall
• 10
  10°C min night temperature
• 69
  69 mm of monthly rainfall

On average 69 mm (2.7 inches) of rain normally falls in Sealand during June with rain falling on 15 days of the month.

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Sealand weather in July

The average maximum daytime temperature in Sealand in July is a comfortable 20°C (68°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 5 hours of sunshine a day in Sealand during July.

• 20
  20°C max day temperature
• 5
  5 hours of sunshine per day
• 13
  13 days with some rainfall
• 12
  12°C min night temperature
• 57
  57 mm of monthly rainfall

On average 57 mm (2.2 inches) of rain normally falls in Sealand during July with rain falling on 13 days of the month.

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Sealand weather in August

The average maximum daytime temperature in Sealand in August is a comfortable 20°C (68°F), while the average minimum night-time temperature is a cool 12°C (54°F). You can expect on average 5 hours of sunshine a day in Sealand during August.

• 20
  20°C max day temperature
• 5
  5 hours of sunshine per day
• 15
  15 days with some rainfall
• 12
  12°C min night temperature
• 73
  73 mm of monthly rainfall

On average 73 mm (2.9 inches) of rain normally falls in Sealand during August with rain falling on 15 days of the month.

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Sealand weather in September

The average maximum daytime temperature in Sealand 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 4 hours of sunshine a day in Sealand during September.

• 17
  17°C max day temperature
• 4
  4 hours of sunshine per day
• 15
  15 days with some rainfall
• 10
  10°C min night temperature
• 79
  79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Sealand during September with rain falling on 15 days of the month.

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Sealand weather in October

The average maximum daytime temperature in Sealand 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 Sealand during October.

• 13
  13°C max day temperature
• 3
  3 hours of sunshine per day
• 18
  18 days with some rainfall
• 7
  7°C min night temperature
• 82
  82 mm of monthly rainfall

On average 82 mm (3.2 inches) of rain normally falls in Sealand during October with rain falling on 18 days of the month.

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Sealand weather in November

The average maximum daytime temperature in Sealand 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 Sealand during November.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 19
  19 days with some rainfall
• 4
  4°C min night temperature
• 85
  85 mm of monthly rainfall

On average 85 mm (3.3 inches) of rain normally falls in Sealand during November with rain falling on 19 days of the month.

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Sealand weather in December

The average maximum daytime temperature in Sealand in December 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 1 hours of sunshine a day in Sealand during December.

• 7
  7°C max day temperature
• 1
  1 hour of sunshine per day
• 18
  18 days with some rainfall
• 2
  2°C min night temperature
• 83
  83 mm of monthly rainfall

On average 83 mm (3.3 inches) of rain normally falls in Sealand during December with rain falling on 18 days of the month.

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