Castlerock in august: average Weather, Temperature and Climate
Weather in Castlerock in august 2025
The weather in Castlerock in the month of august comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
tolerable weather
Weather at 6am
56°F
Partly Cloudy
31% of time
30%
19%
10%
Weather at 12pm
61°F
Moderate rain at times
43% of time
19%
16%
14%
Weather at 6pm
59°F
Moderate rain at times
47% of time
19%
14%
13%
Weather at 3am
56°F
29%
28%
18%
15%
Evolution of daily average temperature and precipitation in Castlerock in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Castlerock in august.
The climate of Castlerock in august is tolerable
The weather in august in Castlerock is wet (with 5.9in of rainfall over 10 days). The weather is better from the previous month since in july it receives an average of 6in of precipitation over 11 days.
The climate is quite fresh in this city this month, but it is tolerable by dressing cosy. The thermometer averaged maximum of 63°F. On average, the recorded minimum temperature is 56°F. Thus, the mean temperature average on this month of august in Castlerock is 59°F. Note that these seasonal averages are in contrast with those observed in Castlerock in august with a maximum record of 68°F in 2015 and a minimum record of 47°F in 2014. You can expect to have about 5 days with temperatures over 65°F, or 16% of the month.
Day length in Castlerock in august is 14:59. The sun rises at 05:01 and sunset is at 20:00.
With proper weather, the month of august is okay (but not the best) to go there.
August: another location in Northern Ireland?
If you want to go to Northern Ireland in august, there are destinations with better weather than Castlerock:
In august, Donwpatrick, Annalong, Ballywalter, Bangor, Carrickfergus and Donaghadee have good weather.
Seasonal average climate and temperature of Castlerock in august
Check below seasonal norms These datas are set from the weather statements earlier years of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 59°F | ||||
| Highest temperature | 63°F | ||||
| Lowest temperature | 56°F | ||||
| Highest record temperature | 68°F (2015) | ||||
| Lowest record temperature | 47°F (2014) | ||||
| Number of days at +65°F | 5 day(s) (16%) | ||||
| Sea temperature | |||||
| Average sea temperature | 58°F | ||||
| Lowest sea temperature | 56°F | ||||
| Highest sea temperature | 60°F | ||||
| Wind | |||||
| Wind speed | 23km/h | ||||
| Wind temperature | 52°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5.9in | ||||
| Number of days with rainfall | 10 day(s) (33%) | ||||
| Record daily rainfall | 1.8in (2009) | ||||
| Other climate data | |||||
| Humidity | 92% | ||||
| Visibility | 8.99km | ||||
| Cloud cover | 59% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:01 | ||||
| Time of sunset | 20:00 | ||||
| Length of day | 14:59 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last august?
Here is the day by day recorded weather in Castlerock in august 2024:
58°F to 61°F
59°F to 61°F
54°F to 59°F
56°F to 61°F
58°F to 61°F
54°F to 59°F
58°F to 59°F
54°F to 61°F
58°F to 61°F
58°F to 59°F
54°F to 61°F
58°F to 61°F
59°F to 61°F
54°F to 63°F
54°F to 59°F
54°F to 59°F
56°F to 59°F
56°F to 59°F
54°F to 59°F
54°F to 58°F
54°F to 59°F
56°F to 59°F
56°F to 58°F
54°F to 56°F
52°F to 58°F
56°F to 61°F
59°F to 63°F
56°F to 59°F
56°F to 58°F
56°F to 58°F
54°F to 61°F
Map: other cities in Northern Ireland in august
Cities near Castlerock:
| Portstewart in august | tolerable weather |
| Coleraine in august | tolerable weather |
| Portrush in august | tolerable weather |
| Limavady in august | bad weather |
| Ballymoney in august | tolerable weather |
| Maghera in august | tolerable weather |
| Ballycastle (Causeway Coast) in august | tolerable weather |
| Derry (Londonderry) in august | bad weather |
| Ballymena in august | tolerable weather |
| Magherafelt in august | tolerable weather |
| Glenariff in august | tolerable weather |
| Cookstown in august | bad weather |
Click over cities on the map for information about the weather in august.
Castlerock
perfect weather
good
tolerable
bad
very bad
Weather data for Castlerock in august:
Weather data for Castlerock for august are derived from an average of the weather forecast since 2009 in Castlerock. There is a margin of error and these forecasts are to be considered as general information only. The weather in Castlerock can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Castlerock.