Dublin · December
Run in the midday.
Cold: average high 49°F, low 41°F. Layering becomes the workout. Humidity averages 85% — the limiting factor on most runs. Expect 19 rain days — plan around the radar. Cold mornings warm into runnable midday hours — the windows around noon catch the warmest temperatures.
Avg high / low
49° / 41°F
Humidity
85%
Rain days
19/mo
Wind
17 mph
What December feels like in Dublin
Sunrise
09:32
Mid-month average
Sunset
17:08
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Dublin in December
The kit for December in Dublin: a long-sleeve or light jacket for the first mile, a wind-blocking layer for exposed routes, a water-resistant cap or jacket on standby.
December vs the surrounding months
vs November
-3° avg high
+1 rain days
Dublin in November →
December
49°F avg high
19 rain days
Best: midday
vs January
+2° avg high
+1 rain days
Dublin in January →
Frequently Asked Questions
What is the best time of day to run in Dublin in December?+
Midday. Cold mornings warm into runnable midday hours — the windows around noon catch the warmest temperatures.
What's the average temperature in Dublin in December?+
Average high 49°F, average low 41°F.
How does December compare to surrounding months in Dublin?+
Compared to November (avg high 51°F), December is cooler. Compared to January (avg high 47°F), December is warmer.
Does it rain often in Dublin in December?+
Expect about 19 measurable rain days in December, on average.