ClimateForecastNovemberDecember >>

Castlereagh Climate by Month

The temperature in Castlereagh varies moderately throughout the year. The temperatures shift from pleasant to cold. It is also known for its large amounts of rainfall. Now, let’s explore all the climate details to give you a full picture.

Average day and night temperature

The weather in Castlereagh changes moderately throughout the year, offering enough variation to appreciate each season. Typically, daytime temperatures range from a pleasant 18°C in July to a chilly 9°C in the coolest month, February. Nights are cooler, with temperatures generally dropping to 4°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Castlereagh has a relatively rainy climate with high precipitation levels, averaging 1057 mm of rainfall annually. Precipitation levels in Castlereagh remain relatively steady throughout the year. October has the most rain, with 103 mm over 19 days. In March, this drops slightly to 74 mm, making the city's climate fairly predictable.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, Castlereagh serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 6.1 hours of sunshine daily, and embrace the darker days in December, offering only 1.3 hours of daily sunlight.

Monthly hours of sunshine

Data from: Belfast, Ireland (24 KM, 15 Miles).

Daily hours of sunshine

Data from: Belfast, Ireland (24 KM, 15 Miles).

Average water temperature

The mean water temperature over the year in Castlereagh ranges from 7°C in February to 13°C in August.

Water temperature over the year

Data from: Belfast, Ireland (24 KM, 15 Miles).

The best time of year to visit Castlereagh in the United Kingdom

Other facts from our historical weather data:
  • Which is the warmest month in Castlereagh?
    July has an average maximum temperature of 18°C and is the warmest month of the year.
  • Which is the coldest month in Castlereagh?
    The coldest month is February with an average maximum temperature of 9°C.
  • Which is the wettest month in Castlereagh?
    October tops the wettest month list with 103 mm of rainfall.
  • Which is the driest month in Castlereagh?
    March is the driest month with 74 mm of precipitation.
  • Which is the sunniest month in Castlereagh?
    May is the sunniest month with an average of 184 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Castlereagh

    Thu   Nov 21
    4°C | -2°C
    W 18 km/h
    2.2 mm
    partly cloudy and small chance of rain

    partly cloudy and small chance of rain

    Fri   Nov 22
    6°C | 1°C
    W 14 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Sat   Nov 23
    15°C | 4°C
    SE 36 km/h
    37 mm
    overcast and heavy rain

    overcast and heavy rain