Johnston weather

The Johnston weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for Johnston, Pembrokeshire, Wales.

Johnston weather averages

Check the Johnston 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 Johnston, Pembrokeshire, Wales.

Max Day Temperature (°C)

Hours of Sunshine (daily)

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec

Days with some Rainfall

Min Night Temperature (°C)

Monthly Rainfall (mm)

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Johnston weather by month

Check the weather for Johnston, Pembrokeshire, 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.

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Johnston weather in January

The average maximum daytime temperature in Johnston in January 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 Johnston during January.

  • 8°C maximum daytime temperature in January in Johnston8
    8°C max day temperature
  • 2 hours of sunshine per day in January in Johnston2
    2 hours of sunshine per day
  • 20 days with some rainfall in January in Johnston20
    20 days with some rainfall
  • 3°C minimum night-time temperature in January in Johnston3
    3°C min night temperature
  • 123 mm monthly rainfall in January in Johnston123
    123 mm of monthly rainfall

On average 123 mm (4.8 inches) of rain normally falls in Johnston during January with rain falling on 20 days of the month.

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Johnston weather in February

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

  • 8°C maximum daytime temperature in February in Johnston8
    8°C max day temperature
  • 3 hours of sunshine per day in February in Johnston3
    3 hours of sunshine per day
  • 16 days with some rainfall in February in Johnston16
    16 days with some rainfall
  • 3°C minimum night-time temperature in February in Johnston3
    3°C min night temperature
  • 86 mm monthly rainfall in February in Johnston86
    86 mm of monthly rainfall

On average 86 mm (3.4 inches) of rain normally falls in Johnston during February with rain falling on 16 days of the month.

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Johnston weather in March

The average maximum daytime temperature in Johnston in March 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 4 hours of sunshine a day in Johnston during March.

  • 9°C maximum daytime temperature in March in Johnston9
    9°C max day temperature
  • 4 hours of sunshine per day in March in Johnston4
    4 hours of sunshine per day
  • 17 days with some rainfall in March in Johnston17
    17 days with some rainfall
  • 4°C minimum night-time temperature in March in Johnston4
    4°C min night temperature
  • 91 mm monthly rainfall in March in Johnston91
    91 mm of monthly rainfall

On average 91 mm (3.6 inches) of rain normally falls in Johnston during March with rain falling on 17 days of the month.

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Johnston weather in April

The average maximum daytime temperature in Johnston in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 6 hours of sunshine a day in Johnston during April.

  • 11°C maximum daytime temperature in April in Johnston11
    11°C max day temperature
  • 6 hours of sunshine per day in April in Johnston6
    6 hours of sunshine per day
  • 13 days with some rainfall in April in Johnston13
    13 days with some rainfall
  • 5°C minimum night-time temperature in April in Johnston5
    5°C min night temperature
  • 68 mm monthly rainfall in April in Johnston68
    68 mm of monthly rainfall

On average 68 mm (2.7 inches) of rain normally falls in Johnston during April with rain falling on 13 days of the month.

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Johnston weather in May

The average maximum daytime temperature in Johnston in May is a comfortable 15°C (59°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 7 hours of sunshine a day in Johnston during May.

  • 15°C maximum daytime temperature in May in Johnston15
    15°C max day temperature
  • 7 hours of sunshine per day in May in Johnston7
    7 hours of sunshine per day
  • 13 days with some rainfall in May in Johnston13
    13 days with some rainfall
  • 8°C minimum night-time temperature in May in Johnston8
    8°C min night temperature
  • 60 mm monthly rainfall in May in Johnston60
    60 mm of monthly rainfall

On average 60 mm (2.4 inches) of rain normally falls in Johnston during May with rain falling on 13 days of the month.

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Johnston weather in June

The average maximum daytime temperature in Johnston in June 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 7 hours of sunshine a day in Johnston during June.

  • 17°C maximum daytime temperature in June in Johnston17
    17°C max day temperature
  • 7 hours of sunshine per day in June in Johnston7
    7 hours of sunshine per day
  • 13 days with some rainfall in June in Johnston13
    13 days with some rainfall
  • 10°C minimum night-time temperature in June in Johnston10
    10°C min night temperature
  • 74 mm monthly rainfall in June in Johnston74
    74 mm of monthly rainfall

On average 74 mm (2.9 inches) of rain normally falls in Johnston during June with rain falling on 13 days of the month.

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Johnston weather in July

The average maximum daytime temperature in Johnston 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 7 hours of sunshine a day in Johnston during July.

  • 19°C maximum daytime temperature in July in Johnston19
    19°C max day temperature
  • 7 hours of sunshine per day in July in Johnston7
    7 hours of sunshine per day
  • 12 days with some rainfall in July in Johnston12
    12 days with some rainfall
  • 12°C minimum night-time temperature in July in Johnston12
    12°C min night temperature
  • 66 mm monthly rainfall in July in Johnston66
    66 mm of monthly rainfall

On average 66 mm (2.6 inches) of rain normally falls in Johnston during July with rain falling on 12 days of the month.

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Johnston weather in August

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

  • 19°C maximum daytime temperature in August in Johnston19
    19°C max day temperature
  • 6 hours of sunshine per day in August in Johnston6
    6 hours of sunshine per day
  • 14 days with some rainfall in August in Johnston14
    14 days with some rainfall
  • 12°C minimum night-time temperature in August in Johnston12
    12°C min night temperature
  • 97 mm monthly rainfall in August in Johnston97
    97 mm of monthly rainfall

On average 97 mm (3.8 inches) of rain normally falls in Johnston during August with rain falling on 14 days of the month.

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Johnston weather in September

The average maximum daytime temperature in Johnston in September 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 Johnston during September.

  • 17°C maximum daytime temperature in September in Johnston17
    17°C max day temperature
  • 5 hours of sunshine per day in September in Johnston5
    5 hours of sunshine per day
  • 15 days with some rainfall in September in Johnston15
    15 days with some rainfall
  • 11°C minimum night-time temperature in September in Johnston11
    11°C min night temperature
  • 103 mm monthly rainfall in September in Johnston103
    103 mm of monthly rainfall

On average 103 mm (4.1 inches) of rain normally falls in Johnston during September with rain falling on 15 days of the month.

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Johnston weather in October

The average maximum daytime temperature in Johnston in October is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 3 hours of sunshine a day in Johnston during October.

  • 14°C maximum daytime temperature in October in Johnston14
    14°C max day temperature
  • 3 hours of sunshine per day in October in Johnston3
    3 hours of sunshine per day
  • 18 days with some rainfall in October in Johnston18
    18 days with some rainfall
  • 8°C minimum night-time temperature in October in Johnston8
    8°C min night temperature
  • 129 mm monthly rainfall in October in Johnston129
    129 mm of monthly rainfall

On average 129 mm (5.1 inches) of rain normally falls in Johnston during October with rain falling on 18 days of the month.

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Johnston weather in November

The average maximum daytime temperature in Johnston in November is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 2 hours of sunshine a day in Johnston during November.

  • 10°C maximum daytime temperature in November in Johnston10
    10°C max day temperature
  • 2 hours of sunshine per day in November in Johnston2
    2 hours of sunshine per day
  • 19 days with some rainfall in November in Johnston19
    19 days with some rainfall
  • 6°C minimum night-time temperature in November in Johnston6
    6°C min night temperature
  • 133 mm monthly rainfall in November in Johnston133
    133 mm of monthly rainfall

On average 133 mm (5.2 inches) of rain normally falls in Johnston during November with rain falling on 19 days of the month.

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Johnston weather in December

The average maximum daytime temperature in Johnston in December 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 Johnston during December.

  • 9°C maximum daytime temperature in December in Johnston9
    9°C max day temperature
  • 2 hours of sunshine per day in December in Johnston2
    2 hours of sunshine per day
  • 20 days with some rainfall in December in Johnston20
    20 days with some rainfall
  • 4°C minimum night-time temperature in December in Johnston4
    4°C min night temperature
  • 138 mm monthly rainfall in December in Johnston138
    138 mm of monthly rainfall

On average 138 mm (5.4 inches) of rain normally falls in Johnston during December with rain falling on 20 days of the month.

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