How the Cliffs of Moher change through the year
The month doesn't decide whether you get a clear view — the forecast for your actual date does that. What the month changes is your odds of a dry, clear day, plus three practical things: how much daylight you get, how many people are on the path with you, and how far the operator's online ticket price climbs for the busiest slots. May and June carry the best odds and the longest daylight — May sits among the two driest months at the nearest weather station, June brings up to 16 hours 54 minutes of daylight, and neither has yet reached the July–August rush, when overnight stays in County Clare run highest. The trade-off is that early summer already runs on the extended 08:00–21:00 opening hours, so the car park and paths are busier than in winter, just not as busy as high summer.
The rainfall figures below are a monthly total, not a daily rate — 63mm across all of May does not mean every day is wet, and in practical terms it means fewer rainy spells overall than in November or December, when the total is closer to double. Treat the numbers as a guide to the general pattern rather than a promise about any one day.
September keeps most of that daylight and mild weather while the school-holiday crowds thin out; April offers something similar ahead of the season, with slightly cooler air and a shorter day. Winter, from November to February, is the quietest and starkest version of the cliffs — short days, the lowest ticket-price band, and the best chance of a genuinely dramatic, stormy sea — but it also carries the highest chance that O'Brien's Tower or the outer path will be closed for wind.
| Month | Avg. rainfall | Avg. temperature | Daylight | Opening hours |
|---|
| January | 103.8mm | 6.2°C | 8h 06m | 09:00–17:00 |
| February | 86.7mm | 6.5°C | 9h 52m | 09:00–17:00 |
| March | 75.8mm | 7.6°C | 11h 47m | 08:00–19:00 |
| April | 62.3mm | 9.6°C | 13h 56m | 08:00–19:00 |
| May | 63.1mm | 12.2°C | 15h 48m | 08:00–21:00 |
| June | 69.6mm | 14.6°C | 16h 54m | 08:00–21:00 |
| July | 75.8mm | 16.1°C | 16h 27m | 08:00–21:00 |
| August | 87.6mm | 15.9°C | 14h 48m | 08:00–21:00 |
| September | 77.4mm | 14.2°C | 12h 45m | 08:00–19:00 |
| October | 95.5mm | 11.2°C | 10h 41m | 08:00–19:00 |
| November | 106.6mm | 8.4°C | 8h 43m | 09:00–17:00 |
| December | 115.4mm | 6.6°C | 7h 37m | 09:00–17:00* |
Rainfall and temperature: Met Éireann, Shannon Airport, 1991–2020 average. Daylight: computed for the cliffs' own coordinates, mid-month. Opening hours: cliffsofmoher.ie. *Closed 24–26 December.
Puffin tip: if you're timing your trip around wildlife more than weather, May and June still win — see the puffins and seabirds section below.
Best time of day to visit
Once the day's weather is settled, time of day is what decides how busy, expensive and well-lit your visit feels — and it works the same way in every season. The operator's own online ticket price rises for the 11am–4pm slot, which is also when the car park fills and most coach tours — including full-day trips from Dublin and Galway — are on site. Arrive in the first hour after opening, or in the last couple of hours before closing, and you'll generally find the paths far less crowded.
Light matters too. The cliffs face almost due west across the open Atlantic, so the sun swings around and behind you through the afternoon instead of into your eyes, and the last hour or two before closing tends to give the richest light for photos, especially from spring to autumn when the site stays open into the evening. The operator's own site actively promotes evening visits for exactly this reason — fewer visitors, shorter queues, and what it calls "the play of light" over the Atlantic. In winter, when the site closes at 17:00, arrive well before the light starts to fade — don't count on an evening visit.
Puffins and seabirds
The Cliffs of Moher host one of Ireland's most important seabird colonies, and the mix on the ledges changes through the year. From late February, guillemots, razorbills and other seabirds start returning from their winter feeding grounds out at sea. Puffins usually arrive at the end of March and nest from late May to mid-July, so May and June give you the best chance of seeing them — look from the South Platform, overlooking Goat Island, and visit early morning or evening when they're most active near their burrows.
A sighting is never guaranteed, and by late summer most puffins have already gone back out to sea for the winter, so treat this as a bonus reason to choose May or June, not the main one.
Weather, wind and when the cliffs close
Atlantic weather at the cliffs can change fast: a foggy morning can turn clear by afternoon, and the reverse happens just as often. Fog and low cloud are the more common problem for a first-time visitor, simply because they hide the view the whole trip is built around. There is no warning system for fog the way there is for wind, so the forecast for your own date is the only real check. If fog does spoil your view and you're staying in the area, the operator lets you reuse your ticket within the next 24 hours.
The site itself uses Met Éireann's three-tier wind-warning system, and each tier means something different for your visit. Under Status Yellow, winds are strong and you're asked to take extra care on the cliff-side paths and viewing platforms, but the site stays open. Status Orange means conditions are judged too hazardous to visit, and the site is closed or preparing to close and evacuate. Status Red means it's already closed, with staff and visitors evacuated. That's a decision made on the day, not a seasonal rule, though severe wind warnings are issued more often from autumn into winter than in summer.
O'Brien's Tower has its own separate rule: it can close on any day for weather or operational reasons, so check with staff on arrival for that day's hours. A site closure doesn't cancel the rest of a day tour, either — the Burren coastal drive and Galway City are unaffected. For your own safety, stay on the paved path and behind the barriers at all times — sections of the cliff edge are unfenced, and the operator's own guidance is never to cross a wall or barrier for a photo.
Check the live forecast for your exact date in the planner above before you travel, especially between October and February.
