Gretna weather

The Gretna weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Gretna, Dumfries and Galloway, Scotland in 2026/2027.

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Gretna weather averages

Check the Gretna 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 Gretna, Dumfries and Galloway, Scotland.

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Gretna weather by month

Check the weather for Gretna, Dumfries and Galloway, Scotland 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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Gretna weather in January

The average maximum daytime temperature in Gretna 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 Gretna during January.

• 6
  6°C max day temperature
• 2
  2 hours of sunshine per day
• 21
  21 days with some rainfall
• 1
  1°C min night temperature
• 226
  226 mm of monthly rainfall

On average 226 mm (8.9 inches) of rain normally falls in Gretna during January with rain falling on 21 days of the month.

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Gretna weather in February

The average maximum daytime temperature in Gretna in February 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 3 hours of sunshine a day in Gretna during February.

• 6
  6°C max day temperature
• 3
  3 hours of sunshine per day
• 16
  16 days with some rainfall
• 1
  1°C min night temperature
• 159
  159 mm of monthly rainfall

On average 159 mm (6.3 inches) of rain normally falls in Gretna during February with rain falling on 16 days of the month.

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Gretna weather in March

The average maximum daytime temperature in Gretna in March 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 Gretna during March.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 18
  18 days with some rainfall
• 2
  2°C min night temperature
• 180
  180 mm of monthly rainfall

On average 180 mm (7.1 inches) of rain normally falls in Gretna during March with rain falling on 18 days of the month.

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Gretna weather in April

The average maximum daytime temperature in Gretna in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 5 hours of sunshine a day in Gretna during April.

• 11
  11°C max day temperature
• 5
  5 hours of sunshine per day
• 15
  15 days with some rainfall
• 3
  3°C min night temperature
• 109
  109 mm of monthly rainfall

On average 109 mm (4.3 inches) of rain normally falls in Gretna during April with rain falling on 15 days of the month.

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Gretna weather in May

The average maximum daytime temperature in Gretna in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 6 hours of sunshine a day in Gretna during May.

• 14
  14°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 6
  6°C min night temperature
• 93
  93 mm of monthly rainfall

On average 93 mm (3.7 inches) of rain normally falls in Gretna during May with rain falling on 16 days of the month.

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Gretna weather in June

The average maximum daytime temperature in Gretna in June is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 6 hours of sunshine a day in Gretna during June.

• 17
  17°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 8
  8°C min night temperature
• 114
  114 mm of monthly rainfall

On average 114 mm (4.5 inches) of rain normally falls in Gretna during June with rain falling on 16 days of the month.

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Gretna weather in July

The average maximum daytime temperature in Gretna in July 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 5 hours of sunshine a day in Gretna during July.

• 19
  19°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 11
  11°C min night temperature
• 123
  123 mm of monthly rainfall

On average 123 mm (4.8 inches) of rain normally falls in Gretna during July with rain falling on 16 days of the month.

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Gretna weather in August

The average maximum daytime temperature in Gretna in August 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 Gretna during August.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 17
  17 days with some rainfall
• 10
  10°C min night temperature
• 147
  147 mm of monthly rainfall

On average 147 mm (5.8 inches) of rain normally falls in Gretna during August with rain falling on 17 days of the month.

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Gretna weather in September

The average maximum daytime temperature in Gretna in September is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 4 hours of sunshine a day in Gretna during September.

• 16
  16°C max day temperature
• 4
  4 hours of sunshine per day
• 18
  18 days with some rainfall
• 9
  9°C min night temperature
• 175
  175 mm of monthly rainfall

On average 175 mm (6.9 inches) of rain normally falls in Gretna during September with rain falling on 18 days of the month.

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Gretna weather in October

The average maximum daytime temperature in Gretna in October is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 3 hours of sunshine a day in Gretna during October.

• 12
  12°C max day temperature
• 3
  3 hours of sunshine per day
• 20
  20 days with some rainfall
• 6
  6°C min night temperature
• 230
  230 mm of monthly rainfall

On average 230 mm (9.1 inches) of rain normally falls in Gretna during October with rain falling on 20 days of the month.

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Gretna weather in November

The average maximum daytime temperature in Gretna in November 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 2 hours of sunshine a day in Gretna during November.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 3
  3°C min night temperature
• 218
  218 mm of monthly rainfall

On average 218 mm (8.6 inches) of rain normally falls in Gretna during November with rain falling on 20 days of the month.

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Gretna weather in December

The average maximum daytime temperature in Gretna in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 1 hours of sunshine a day in Gretna during December.

• 7
  7°C max day temperature
• 1
  1 hour of sunshine per day
• 21
  21 days with some rainfall
• 1
  1°C min night temperature
• 228
  228 mm of monthly rainfall

On average 228 mm (9 inches) of rain normally falls in Gretna during December with rain falling on 21 days of the month.

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