Red Castle Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Red Castle.
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Climate overview of Red Castle
Red Castle, Donegal County, Ireland, experiences moderate temperature changes through the seasons. August is the warmest month with daytime highs of 18°C (64°F), while January is the coolest at 9°C (48°F).
The city receives considerable rainfall, with around 1303 mm (51 in) annually. November is the wettest month. May is the sunniest month, averaging 6.8 hours of sunshine per day.
Red Castle Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Red Castle - and find the best time to visit.
Monthly Temperature in Red Castle
The weather in Red Castle changes moderately throughout the year, offering enough variation to appreciate each season. Typically, average maximum daytime temperatures range from a moderate 18°C (64°F) in August to a chilly 9°C (48°F) in the coolest month, January.
Nights vary from 13°C (55°F) in August to around 4°C (39°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Red Castle
Red Castle has a relatively rainy climate with high precipitation levels, averaging 1303 mm (51 in) of rainfall annually. Precipitation levels in Red Castle remain relatively steady throughout the year. November has the most rain, with 129 mm (5.1 in) over 23 days. In the driest month May, this drops slightly to 85 mm (3.3 in), making the city's climate fairly predictable. For more details, please visit our Red Castle Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Red Castle
For those who appreciate different seasons, Red Castle serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 6.8 hours of sunshine daily, and embrace the darker days in December, offering only 1.3 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Red Castle
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and August
- Warmest weather: July, August and September
- Most sunshine: May
Frequently asked questions about the climate in Red Castle
What is the best time to visit Red Castle?
May and August typically offer the most optimal weather in Red Castle. In contrast, January, February, March, November and December tend to have less optimal conditions.
What temperatures can I expect in Red Castle?
Daytime highs range from 9°C (48°F) in January to 18°C (64°F) in August. Nighttime lows range from 4°C (39°F) to 13°C (55°F).
How much rain does Red Castle get?
Annual rainfall is around 1303 mm (51 in). November is the wettest month with 129 mm (5.1 in), while May is the driest with 85 mm (3.3 in).
How sunny is Red Castle?
Red Castle receives around 1,342 hours of sunshine per year. May is the sunniest month with 203 hours, while December is the cloudiest with just 39 hours.
Red Castle 3-Day Forecast
Red Castle on the map
Red Castle is highlighted - select any city to see its climate.
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Where to go in September - average daytime high across popular destinations.
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