Dalkey Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Dalkey.
Climate overview of Dalkey
Dalkey, Dublin County, Ireland, has a moderate seasonal temperature range, with August reaching 19°C (66°F) and February cooling to 9°C (48°F).
Dalkey sees a moderate amount of rainfall, totalling around 971 mm (38 in) per year. The most sunshine falls in May, with an average of 6.3 hours of daily sunshine.
Dalkey Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dalkey — and find the best time to visit.
Monthly Temperature in Dalkey
The climate in Dalkey experiences moderate temperature changes, with mild shifts between seasons. Average maximum daytime temperatures range from a pleasant 19°C (66°F) in August, the warmest time of the year, to a chilly 9°C (48°F) during cooler months like February.
At night, you can expect temperatures ranging from 13°C (55°F) in August to around 4°C (39°F) during February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Dalkey
Generally, Dalkey experiences moderate precipitation patterns, averaging 971 mm (38 in) yearly. Year-round, Dalkey has a balanced climate with minimal variation in precipitation. The difference between the wettest month, November, with 103 mm (4.1 in), and the driest month, March, with 67 mm (2.6 in), is minimal. For more details, please visit our Dalkey 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 Dalkey
Seasonal changes in sunshine hours are quite dramatic in Dalkey. While May receives considerable daily sunshine with up to 6.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Dalkey
The mean water temperature over the year ranges from 8°C (46°F) in March to 15°C (59°F) in August.
Water temperature over the year
Humidity in Dalkey by Month
The relative humidity is high throughout the year in Dalkey.
The city experiences its highest humidity in December, reaching 83%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Dalkey
The mean wind speed over the year ranges from 4 m/s (8 knots) in May, June, July, August and September to 6 m/s (12 knots) in January, February, March and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Dalkey
The weather does bring rainfall during this period, between 79 mm (3.1 in) and 83 mm (3.3 in). Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.
Frequently asked questions about the climate in Dalkey
What is the best time to visit Dalkey?
July and August typically offer the most optimal weather in Dalkey. In contrast, January, February, March, November and December tend to have less optimal conditions.
What temperatures can I expect in Dalkey?
Daytime highs range from 9°C (48°F) in February to 19°C (66°F) in August. Nighttime lows range from 4°C (39°F) to 13°C (55°F).
How much rain does Dalkey get?
Annual rainfall is around 971 mm (38 in). November is the wettest month with 103 mm (4.1 in), while March is the driest with 67 mm (2.6 in).
How sunny is Dalkey?
Dalkey receives around 1,432 hours of sunshine per year. May is the sunniest month with 188 hours, while December is the cloudiest with just 51 hours.
Dalkey 3-Day Forecast
Dalkey 3-Day Forecast
Dalkey on the map
Dalkey is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Cork
19°C (66°F) Kilkenny
20°C (68°F) Dublin20°C (68°F) Kenmare
19°C (66°F) Galway20°C (68°F) Killarney19°C (66°F) Westport19°C (66°F) Doolin18°C (64°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Go to Dingle in Ireland
Dolphins, Whales and breathtaking views. The colorful fishing village Dingle in Ireland has it all and this town is a must for your bucket list.
An Irish adventure like no other in Killarney National Park
Head down to the South West part of the country, County Kerry, to the small town of Killarney. If you want to experience what Ireland is really all about
Horseback riding in Ireland
Ireland is the most ideal place in the world for horseback riding. Combine this with the most hospitable people you will ever encounter and you have an unforgettable dream trip to add to your bucket list.