Grimsby weather

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

• Grimsby weather averages
• Grimsby weather by month
• Back to Lincolnshire
• Back to England

Grimsby weather averages

Check the Grimsby 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 Grimsby, Lincolnshire, England.

Back to top

Grimsby weather by month

Check the weather for Grimsby, Lincolnshire, England 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

Back to top

Grimsby weather in January

The average maximum daytime temperature in Grimsby in January is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Grimsby during January.

• 6
  6°C max day temperature
• 2
  2 hours of sunshine per day
• 19
  19 days with some rainfall
• 1
  1°C min night temperature
• 61
  61 mm of monthly rainfall

On average 61 mm (2.4 inches) of rain normally falls in Grimsby during January with rain falling on 19 days of the month.

Back to months

Grimsby weather in February

The average maximum daytime temperature in Grimsby 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 Grimsby during February.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 14
  14 days with some rainfall
• 2
  2°C min night temperature
• 44
  44 mm of monthly rainfall

On average 44 mm (1.7 inches) of rain normally falls in Grimsby during February with rain falling on 14 days of the month.

Back to months

Grimsby weather in March

The average maximum daytime temperature in Grimsby 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 Grimsby 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
• 55
  55 mm of monthly rainfall

On average 55 mm (2.2 inches) of rain normally falls in Grimsby during March with rain falling on 17 days of the month.

Back to months

Grimsby weather in April

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

• 11
  11°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 4
  4°C min night temperature
• 53
  53 mm of monthly rainfall

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

Back to months

Grimsby weather in May

The average maximum daytime temperature in Grimsby 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 6 hours of sunshine a day in Grimsby during May.

• 15
  15°C max day temperature
• 6
  6 hours of sunshine per day
• 13
  13 days with some rainfall
• 7
  7°C min night temperature
• 49
  49 mm of monthly rainfall

On average 49 mm (1.9 inches) of rain normally falls in Grimsby during May with rain falling on 13 days of the month.

Back to months

Grimsby weather in June

The average maximum daytime temperature in Grimsby 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 Grimsby during June.

• 18
  18°C max day temperature
• 6
  6 hours of sunshine per day
• 14
  14 days with some rainfall
• 10
  10°C min night temperature
• 56
  56 mm of monthly rainfall

On average 56 mm (2.2 inches) of rain normally falls in Grimsby during June with rain falling on 14 days of the month.

Back to months

Grimsby weather in July

The average maximum daytime temperature in Grimsby 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 6 hours of sunshine a day in Grimsby during July.

• 20
  20°C max day temperature
• 6
  6 hours of sunshine per day
• 12
  12 days with some rainfall
• 12
  12°C min night temperature
• 44
  44 mm of monthly rainfall

On average 44 mm (1.7 inches) of rain normally falls in Grimsby during July with rain falling on 12 days of the month.

Back to months

Grimsby weather in August

The average maximum daytime temperature in Grimsby 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 6 hours of sunshine a day in Grimsby during August.

• 20
  20°C max day temperature
• 6
  6 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 Grimsby during August with rain falling on 13 days of the month.

Back to months

Grimsby weather in September

The average maximum daytime temperature in Grimsby in September 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 5 hours of sunshine a day in Grimsby during September.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 13
  13 days with some rainfall
• 10
  10°C min night temperature
• 59
  59 mm of monthly rainfall

On average 59 mm (2.3 inches) of rain normally falls in Grimsby during September with rain falling on 13 days of the month.

Back to months

Grimsby weather in October

The average maximum daytime temperature in Grimsby in October 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 3 hours of sunshine a day in Grimsby during October.

• 14
  14°C max day temperature
• 3
  3 hours of sunshine per day
• 16
  16 days with some rainfall
• 7
  7°C min night temperature
• 63
  63 mm of monthly rainfall

On average 63 mm (2.5 inches) of rain normally falls in Grimsby during October with rain falling on 16 days of the month.

Back to months

Grimsby weather in November

The average maximum daytime temperature in Grimsby in November is a cool 10°C (50°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 Grimsby during November.

• 10
  10°C max day temperature
• 2
  2 hours of sunshine per day
• 18
  18 days with some rainfall
• 4
  4°C min night temperature
• 62
  62 mm of monthly rainfall

On average 62 mm (2.4 inches) of rain normally falls in Grimsby during November with rain falling on 18 days of the month.

Back to months

Grimsby weather in December

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

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 18
  18 days with some rainfall
• 2
  2°C min night temperature
• 71
  71 mm of monthly rainfall

On average 71 mm (2.8 inches) of rain normally falls in Grimsby during December with rain falling on 18 days of the month.

Back to months