Jamestown weather

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

• Jamestown weather averages
• Jamestown weather by month
• Back to West Dunbartonshire
• Back to Scotland

Jamestown weather averages

Check the Jamestown 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 Jamestown, West Dunbartonshire, Scotland.

Back to top

Jamestown weather by month

Check the weather for Jamestown, West Dunbartonshire, 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

Back to top

Jamestown weather in January

The average maximum daytime temperature in Jamestown in January is a cold 6°C (43°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 Jamestown during January.

• 6
  6°C max day temperature
• 1
  1 hour of sunshine per day
• 22
  22 days with some rainfall
• 2
  2°C min night temperature
• 171
  171 mm of monthly rainfall

On average 171 mm (6.7 inches) of rain normally falls in Jamestown during January with rain falling on 22 days of the month.

Back to months

Jamestown weather in February

The average maximum daytime temperature in Jamestown in February is a cold 6°C (43°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 Jamestown during February.

• 6
  6°C max day temperature
• 2
  2 hours of sunshine per day
• 19
  19 days with some rainfall
• 2
  2°C min night temperature
• 118
  118 mm of monthly rainfall

On average 118 mm (4.6 inches) of rain normally falls in Jamestown during February with rain falling on 19 days of the month.

Back to months

Jamestown weather in March

The average maximum daytime temperature in Jamestown 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 Jamestown during March.

• 8
  8°C max day temperature
• 3
  3 hours of sunshine per day
• 20
  20 days with some rainfall
• 2
  2°C min night temperature
• 131
  131 mm of monthly rainfall

On average 131 mm (5.2 inches) of rain normally falls in Jamestown during March with rain falling on 20 days of the month.

Back to months

Jamestown weather in April

The average maximum daytime temperature in Jamestown 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 Jamestown 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
• 84
  84 mm of monthly rainfall

On average 84 mm (3.3 inches) of rain normally falls in Jamestown during April with rain falling on 16 days of the month.

Back to months

Jamestown weather in May

The average maximum daytime temperature in Jamestown 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 Jamestown 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
• 75
  75 mm of monthly rainfall

On average 75 mm (3 inches) of rain normally falls in Jamestown during May with rain falling on 16 days of the month.

Back to months

Jamestown weather in June

The average maximum daytime temperature in Jamestown in June 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 6 hours of sunshine a day in Jamestown during June.

• 16
  16°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 9
  9°C min night temperature
• 79
  79 mm of monthly rainfall

On average 79 mm (3.1 inches) of rain normally falls in Jamestown during June with rain falling on 16 days of the month.

Back to months

Jamestown weather in July

The average maximum daytime temperature in Jamestown in July is a comfortable 18°C (64°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 Jamestown during July.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 17
  17 days with some rainfall
• 11
  11°C min night temperature
• 95
  95 mm of monthly rainfall

On average 95 mm (3.7 inches) of rain normally falls in Jamestown during July with rain falling on 17 days of the month.

Back to months

Jamestown weather in August

The average maximum daytime temperature in Jamestown in August is a comfortable 17°C (63°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 Jamestown during August.

• 17
  17°C max day temperature
• 5
  5 hours of sunshine per day
• 18
  18 days with some rainfall
• 11
  11°C min night temperature
• 124
  124 mm of monthly rainfall

On average 124 mm (4.9 inches) of rain normally falls in Jamestown during August with rain falling on 18 days of the month.

Back to months

Jamestown weather in September

The average maximum daytime temperature in Jamestown in September is a comfortable 15°C (59°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 Jamestown during September.

• 15
  15°C max day temperature
• 4
  4 hours of sunshine per day
• 20
  20 days with some rainfall
• 9
  9°C min night temperature
• 154
  154 mm of monthly rainfall

On average 154 mm (6.1 inches) of rain normally falls in Jamestown during September with rain falling on 20 days of the month.

Back to months

Jamestown weather in October

The average maximum daytime temperature in Jamestown in October is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 2 hours of sunshine a day in Jamestown during October.

• 12
  12°C max day temperature
• 2
  2 hours of sunshine per day
• 22
  22 days with some rainfall
• 7
  7°C min night temperature
• 160
  160 mm of monthly rainfall

On average 160 mm (6.3 inches) of rain normally falls in Jamestown during October with rain falling on 22 days of the month.

Back to months

Jamestown weather in November

The average maximum daytime temperature in Jamestown 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 Jamestown during November.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 22
  22 days with some rainfall
• 4
  4°C min night temperature
• 165
  165 mm of monthly rainfall

On average 165 mm (6.5 inches) of rain normally falls in Jamestown during November with rain falling on 22 days of the month.

Back to months

Jamestown weather in December

The average maximum daytime temperature in Jamestown in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 1 hours of sunshine a day in Jamestown during December.

• 7
  7°C max day temperature
• 1
  1 hour of sunshine per day
• 23
  23 days with some rainfall
• 3
  3°C min night temperature
• 165
  165 mm of monthly rainfall

On average 165 mm (6.5 inches) of rain normally falls in Jamestown during December with rain falling on 23 days of the month.

Back to months