Climate guide for Dublin, Ireland

Best Time to Visit
Dublin

How to read the score (0–10)
05810
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01 · Ireland

About Dublin

May-September opens Dublin for Temple Bar evenings, Trinity College, and Howth or Cliffs of Moher day trips under softer Irish weather. Walk the Liffey mornings; museums cover classic showers.

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Did you know?

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Travel Tips

01Best time & timing
June leads the year at 8.5/10, with May and July close behind — December (3.4/10) is the one to avoid without a specific reason.
02Weather & what to pack
In June plan for about 14°C; the month brings 58 mm of rain. Pack layers you can shed by midday plus one warm layer for the evening.
03Crowds & value
Crowds build in July and rates follow; May usually pairs good conditions (7.9/10) with the lowest prices of the strong months.

Things to do in Dublin

Dublin, Ireland. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Dublin: the short answer

Plan Dublin for June, with May, July close behind — the stretch with the most usable temperatures and the fewest lost days to rain: June averages 14°C with 58 mm of rain and about 21 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are December, November.

Across the year Dublin swings from 6°C in January to 16°C in August, a 10-degree spread, while rainfall ranges from 55 mm in May to 133 mm in December. In short, Dublin is not equally good year-round — the gap between its best and worst month is 5.1 points on the same 10-point scale.

Warmest month: August (16°C). Coolest: January (6°C). Driest: May (55 mm). Wettest: December (133 mm).

Dublin month by month

January in Dublin: expect compromises

Hardest · 4.7/10

Expect 6°C (43°F) in January. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 61 mm of rain this month — a flexible day or two helps — with almost no days with 6+ hours of sunshine and 7.8 hours of daylight to work around it.

That is 4.7/10 on the same scale — 8th of 12 months, versus 8.5/10 for the best month here.

Expect mid-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Dublin — 3.8 points higher on the same scale.

February in Dublin — off-season conditions

Hardest · 4.7/10

Expect 7°C (45°F) in February. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 77 mm of rain this month — a flexible day or two helps — with almost no days with 6+ hours of sunshine and 9.5 hours of daylight to work around it.

That is 4.7/10 on the same scale — 9th of 12 months, versus 8.5/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Dublin — 3.8 points higher on the same scale.

March in Dublin — the hardest end of the year

Hardest · 4.7/10

March averages 7°C (45°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

At 104 mm this is a genuinely wet month: about 2 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.

It scores 4.7/10 here, 10th of 12 months, against 8.5/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.

Flexible dates? June scores 3.8 points higher here — enough to change the trip.

April in Dublin — workable with trade-offs

Trade-offs · 6.3/10

Expect 9°C (48°F) in April. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 77 mm of rain this month — a flexible day or two helps — with about 11 days with 6+ hours of sunshine and 13.7 hours of daylight to work around it.

That is 6.3/10 on the same scale — 5th of 12 months, versus 8.5/10 for the best month here.

Budget for mid-season pricing, and crowds are moderate.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Dublin — 2.2 points higher on the same scale.

May in Dublin: strong conditions, 2nd of 12

Good · 7.9/10

May averages 12°C (54°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

Rainfall runs 55 mm, so plan one flexible day in three; you still get about 18 days with 6+ hours of sunshine and 15.6 hours of daylight.

It scores 7.9/10 here, 2nd of 12 months, against 8.5/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

June in Dublin tops the year's climate scores

Best window · 8.5/10

Temperatures hover around 14°C (57°F) — the kind of month where neither heat nor cold forces the schedule.

Budget for roughly 58 mm of rain this month — a flexible day or two helps — with about 21 days with 6+ hours of sunshine and 16.7 hours of daylight to work around it.

On our climate-comfort scale this is the top-ranked month of the year for Dublin at 8.5/10 — the reference point every other month on this page is measured against.

Expect peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

July in Dublin: strong conditions, 3rd of 12

Good · 7.2/10

Temperatures hover around 15°C (60°F) — the kind of month where neither heat nor cold forces the schedule.

113 mm of rain signals a properly wet month, with only about 17 days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 7.2/10 on the same scale — 3rd of 12 months, versus 8.5/10 for the best month here.

Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

August holds up well in Dublin — 4th best month

Good · 7.1/10

August averages 16°C (60°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

At 113 mm this is a genuinely wet month: about 15 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.

It scores 7.1/10 here, 4th of 12 months, against 8.5/10 in the destination's best month.

Figure on peak pricing, with this is one of the busiest months here.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

September in Dublin — middling scores, decent value

Trade-offs · 6.2/10

September averages 14°C (57°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

At 108 mm this is a genuinely wet month: about 5 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.

It scores 6.2/10 here, 6th of 12 months, against 8.5/10 in the destination's best month.

Figure on mid-season pricing, with crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

Flexible dates? June scores 2.3 points higher here — enough to change the trip.

October in Dublin — off-season conditions

Hardest · 4.9/10

Temperatures hover around 12°C (54°F) — the kind of month where neither heat nor cold forces the schedule.

124 mm of rain signals a properly wet month, with only almost no days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 4.9/10 on the same scale — 7th of 12 months, versus 8.5/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

If your dates are flexible, June is materially better in Dublin — 3.6 points higher on the same scale.

November in Dublin — off-season conditions

Hardest · 4.6/10

Expect 9°C (49°F) in November. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 93 mm of rain this month — a flexible day or two helps — with almost no days with 6+ hours of sunshine and 8.3 hours of daylight to work around it.

That is 4.6/10 on the same scale — 11th of 12 months, versus 8.5/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, June is materially better in Dublin — 3.9 points higher on the same scale.

December in Dublin: expect compromises

Hardest · 3.4/10

December averages 7°C (45°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

At 133 mm this is a genuinely wet month: almost no days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.

It scores 3.4/10 here, 12th of 12 months, against 8.5/10 in the destination's best month.

Plan for low-season pricing, with crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.

Flexible dates? June scores 5.1 points higher here — enough to change the trip.

FAQ

Frequently asked

When is the best time to visit Dublin, Ireland?
In Ideal Weather mode, the best months to visit Dublin are June. June is the single peak month with an Ideal Weather score of 8.5/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Dublin year-round?
Dublin has a climate profile suited to sightseeing and cultural travel. Average monthly temperatures range from 6°C in January to 16°C in August, with Ideal Weather scores between 3.4 and 8.5 out of 10.
Which months should I avoid in Dublin?
The lowest Ideal Weather-scoring months in Dublin are December (3.4/10), November (4.6/10), January (4.7/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Dublin?
December is the wettest month in Dublin, averaging about 133 mm of rainfall. May is the driest, at roughly 55 mm.
Which is the sunniest month in Dublin?
June sees the most sun in Dublin, with about 21 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Dublin a good destination for sightseeing and cultural travel?
Dublin is well suited to sightseeing and cultural travel. Its highest Ideal Weather window (June) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Dublin calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Dublin: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for sightseeing and cultural travel.

Climate data: Open-Meteo ERA5 historical archive, the five most recent complete years (2021–2025). Scores are monthly averages for that window, not forecasts, and short-window precipitation can differ from longer-term normals. “Sunny days” count days with at least 6 hours of measured sunshine — they are not dry days.

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Explore by month

Curated in Dublin

Tickets & experiences