Dalkey Weather in July

July in Dalkey sees daytime temperatures around 18°C (64°F) and lows of 13°C (55°F) at night. With around 81 mm (3.2 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Dalkey in July

Analyzing past climate data, one can expect approximately 14 days of rain, averaging 81 mm (3.2 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Dalkey in July

Daytime highs in Dalkey in July reach 18°C (64°F), with nights around 13°C (55°F). July is part of summer. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Dalkey in July

The month experiences a moderate amount of sunlight, with 166 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in Dalkey in July

July sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

Average water temperature in July

The water temperature is 14°C (57°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

If you're inclined towards comfortable temperatures and drier conditions, July is a good time to visit Dalkey.

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

Dalkey Temperature in July

Min Temperature 13°C (55°F)  

Max Temperature 18°C (64°F)  

Water Temperature 14°C (57°F) *  

Chance of Rain 45%  

Precipitation 81 mm (3.2 in)  

Rainy days 14 days  

Humidity 69% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 166 hours *  

Percentage Sunshine 32% *  

* Data from: Dublin, Ireland (19 KM, 12 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Dalkey typically stay consistent throughout July, with daily highs averaging around 18°C (64°F). Nights are cool, with lows around 12°C (54°F).

Average temperatures in July

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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 July

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Historical weather for Dalkey in July

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.

Historical weather Temperatures Precipitation

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Dalkey historical weather extremes in July

The extremes listed below come from historical weather data collected in Dalkey from 1976 through 2025.

• The warmest day in July was on July 18, 2022, with a maximum of 30°C (86°F).
• Dalkey experienced its chilliest July day on July 1, 1997, reaching only 11°C (52°F).
• Nighttime temperatures dropped to 5°C (41°F) on July 9, 2015, marking the coldest July night on record.

What to Wear in Dalkey in July

Pleasant temperatures in July mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 14°C (57°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Dalkey in July

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

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 Ireland, check out our Dalkey's climate page.

More climate data for Dalkey

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Dalkey climate overview or explore weather in Ireland.