Castlerock Weather in August

Castlerock in August sees moderate temperatures, with highs around 17°C (63°F) and overnight lows of 13°C (55°F). Rainfall is fairly high at around 112 mm (4.4 in) on average, so pack waterproofs just in case.

Rainfall in Castlerock in August

Climate statistics over the past 30 years suggest around 20 days of rain, with 112 mm (4.4 in) average for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.

Temperature in Castlerock in August

Castlerock in August gets highs of 17°C (63°F) during the day and drops to 13°C (55°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. On average, it is the month with the highest temperature of the year.

Sunshine in Castlerock in August

The month experiences a moderate amount of sunlight, with 140 hours of sunshine. This provides a nice balance between sunshine and clouds.

If your ideal day consists of dry skies and pleasant temperatures, June typically offers the best circumstances for Castlerock.

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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Castlerock's climate page.

Castlerock Temperature in August

Min Temperature 13°C (55°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 65%  

Precipitation 112 mm (4.4 in)  

Rainy days 20 days  

Sunshine 140 hours *  

Percentage Sunshine *  

* Data from: Derry, Ireland (38 KM, 23 Miles).

What to Wear in Castlerock in August

Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Castlerock in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

5/10

Walking

5/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Castlerock's climate page.

More climate data for Castlerock

Temperature Rainfall Sunshine

See the full Castlerock climate overview or explore weather in the United Kingdom.