Dalkey Weather in October
Dalkey in October sees moderate temperatures, with highs around 14°C (57°F) and overnight lows of 9°C (48°F). Rainfall is fairly high at around 92 mm (3.6 in) on average, so pack waterproofs just in case.
Rainfall in Dalkey in October
Records from the past 30 years suggest around 17 days of rain, with 92 mm (3.6 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Dalkey in October
In October, Dalkey sees moderate temperatures, with highs of 14°C (57°F). Nights drop to around 9°C (48°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Dalkey in October
The month has fewer sunny days, with around 97 hours of sunshine.
Wind Speed in Dalkey in October
Wind speeds average 5 m/s (10 knots) during October. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in October
At 14°C (57°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Dalkey's climate page.
Dalkey Temperature in October
Min Temperature
9°C (48°F)
Max Temperature
14°C (57°F)
Water Temperature
14°C (57°F) *
Chance of Rain
55%
Precipitation
92 mm (3.6 in)
Rainy days
17 days
Humidity
75% *
Windspeed
5 m/s (10 knots) *
Sunshine
97 hours *
Percentage Sunshine
31% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Dalkey typically stay consistent throughout October, with daily highs averaging around 14°C (57°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather for Dalkey in October
Browse day-by-day weather records for Dalkey spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Dalkey historical weather extremes in October
The extremes listed below come from historical weather data collected in Dalkey from 1986 through 2025.
- Dalkey recorded its highest October temperature of 21°C (70°F) on October 9, 2023.
- The coldest October day was on October 28, 2008, with a maximum of 5°C (41°F).
- The lowest overnight temperature recorded in October was -3°C (27°F) (October 30, 2018).
Best Places in Ireland in October
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in October →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Dalkey in October
Pack for changing conditions in Dalkey in October. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 14°C (57°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.What To Do in Dalkey in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Dalkey's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Dalkey climate overview or explore weather in Ireland.
