Climate of Castlerock
Castlerock has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Castlerock is 11° degrees and there is about 515 mm of rain in a year. It is dry for 87 days a year with an average humidity of 84% and an UV-index of 3.
Climate averages for the whole year
- Day: the average daily temperature during the day is between 7°C and 16°C
- Night:the average nighttime temperature is between 4°C and 12°C
- Sea temperature: the sea temperature is between 7°C and 18°C
- Rain: it rains 230 days and there is a total of approximately 515 mm rainfall
- Snow: it snows an average of 7 days per year
- Sun hours: throughout the year there are 2071 sun hours
Maximum temperature: | between 7°C and 16°C |
Warmest month: | 16°C in July |
Coldest month: | 7°C in January |
Night temperature: | between 4°C and 12°C |
Sea temperature: | between 7°C and 18°C |
Dry days: | 128 days |
Days with rain: | 230 days |
Days with snow: | 7 days |
Total rain sum: | 515 mm |
Hours of sunshine: | 2071 hours |
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Temperature graph
This graph shows the average maximum temperature (red) and minimum temperature (blue) for Castlerock.
Precipitation graph
This graph shows the average amount of rainfall per month for Castlerock.
Climate table of Castlerock
In this climate table you can see at a glance what the average weather per month is for Castlerock. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Castlerock might be like in a given month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Day temp. (°C) | 7 | 7 | 9 | 10 | 13 | 15 | 16 | 16 | 15 | 13 | 10 | 8 |
Night temp. (°C) | 4 | 4 | 4 | 6 | 8 | 10 | 12 | 12 | 11 | 9 | 7 | 5 |
Water temp. (°C) | 7 | 11 | 14 | 16 | 18 | 16 | 17 | 16 | 14 | 13 | 12 | 11 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Precipitation (mm) | 45 | 37 | 44 | 35 | 37 | 42 | 50 | 50 | 33 | 44 | 50 | 48 |
Days with rain | 20 | 16 | 18 | 17 | 18 | 19 | 22 | 24 | 19 | 18 | 19 | 20 |
Days with snow | 2 | 2 | 1 | - | - | - | - | - | - | - | - | 2 |
Dry days | 9 | 10 | 12 | 13 | 13 | 11 | 9 | 7 | 11 | 13 | 11 | 9 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Sun hours per day | 4 | 4 | 5 | 7 | 7 | 9 | 7 | 7 | 6 | 4 | 4 | 4 |
Wind force (Bft) | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 4 | 4 | 4 | 4 |
UV-index | 2 | 2 | 3 | 3 | 3 | 4 | 3 | 4 | 4 | 3 | 2 | 2 |
Best time to visit Castlerock
The best time to visit Castlerock in Northern Ireland is from January through December. In this period you have a very cold temperature and little precipitation. The highest average temperature in Castlerock is 16°C in July and the lowest is 7°C in January. The average water temperature is between 7°C and 18°C.
Climate of Castlerock by month
What is the average climate in a given month for Castlerock? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.
Castlerock weather experiences
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