Temperature
Pleasant by day, brisk at night.
66°Ftypical Aug high
Portmarnock
Ireland · Europe
Portmarnock is most comfortable in early autumn. Summers are mild and winters are cool. Rain is spread through the year. Humidity is usually low.
Best time to go
12 mo · Typical year
Temperature range
39°F to 66°F
Rain
12 days/mo
Sunshine
7.7 h/day
Humidity feel
Generally dry
When to visit
Month-by-month fit
Precipitation
Recurring showers across the month.
42%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
9.5 hAug sunshine
Heat & humidity by month
It rarely feels hot, though humidity can be noticeable during rainy periods.
LowAug heat feel
Easy airWarm airHumid air
Hourly comfort pattern
In August, afternoons feel about 61° and nights feel near 53°.
Very coldColdCoolNight shading
More detailIncludes sky, daypart comfort, and wind
Cloud cover
Mostly cloudy skies.
30%Aug clear sky
ClearCloud cover
Typical August day
August late afternoons are around 65°F, easing to about 63°F in early evening.
Avg temp Typical range
Morning60°F
Rain19%
Cloud75%
Humid airLow
Sun intensityLow
Midday64°F
Rain28%
Cloud82%
Humid airLow
Sun intensityModerate
Late afternoon65°F
Rain25%
Cloud82%
Humid airLow
Sun intensityModerate
evening63°F
Rain18%
Cloud75%
Humid airLow
Sun intensityMinimal
Best windowWind pattern
Calm winds are typical in August.
9 mphAug Light breeze
Typical wind speed (mph)
Similar
Similar climateViennaAustriaSimilar climateAmsterdamNetherlandsSimilar climateLondonUnited KingdomSimilar climateBerlinGermany
Want a side-by-side climate view? Compare Portmarnock with Vienna.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology