Weather in Dublin in July

A good month. July works. It is not the peak, but nothing about it fights you. You should expect rain on 17 days of the month, which is more days wet than dry.

July is the highest-scoring month of the twelve. The nearest rival is September, and the month at the other end of the year is December.

This is persistent light rain rather than storms: 17 wet days but only 1 heavy ones. It rarely cancels anything outright, and it rarely fully clears either. A jacket beats an umbrella. Pack for 17.9 °C days and 12.4 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 5.5 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest July day reached 24.5 °C and the coldest night fell to 8.5 °C, and the wettest single day dropped 28 mm — roughly 35% of the month's rain in one day.

July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 129 mm against 40 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 80 mm average is a reasonable planning figure, not a promise.

Wind is light at 12.5 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 85%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 16.4 °C in June, 17.9 here, 17.9 in August. Nothing about the timing within the month matters much.

Daylight in July

July is at or near the longest days of Dublin's year: 16.5 hours of daylight, losing 1.1 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

An inland climate

Despite being inland, the year stays fairly even: 13.9 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Dublin versus nearby

If Dublin is one option among several, the nearby comparison is worth making. Galway is close enough to be a coin toss — within a degree on temperature, 3 days more rain. Cork is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: July is the answer for Dublin. If it is booked out or priced out, September is the next best thing at 0 points behind, and December is the month to keep off the shortlist.

Every month in Dublin

See all twelve months in Dublin, or where else to go in July.