January in Belfast: mixed conditions, plan around the weather
Trade-offs · 6/10January averages 5°C (42°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 44 mm of rain — occasional showers rather than washed-out days — alongside about 12 days with 6+ hours of sunshine and 8 daylight hours.
It scores 6/10 here, 7th of 12 months, against 8.1/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
Flexible dates? June scores 2.1 points higher here — enough to change the trip.
February in Belfast: mixed conditions, plan around the weather
Trade-offs · 6/10February averages 7°C (44°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 62 mm, so plan one flexible day in three; you still get about 11 days with 6+ hours of sunshine and 9.7 hours of daylight.
It scores 6/10 here, 8th of 12 months, against 8.1/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Flexible dates? June scores 2.1 points higher here — enough to change the trip.
March in Belfast — middling scores, decent value
Trade-offs · 6/10Expect 7°C (44°F) in March. A good month for city streets, viewpoints and long meals; leave swimming for another season.
103 mm of rain signals a properly wet month, with only about 18 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 6/10 on the same scale — 9th of 12 months, versus 8.1/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.
If your dates are flexible, June is materially better in Belfast — 2.1 points higher on the same scale.
April in Belfast: mixed conditions, plan around the weather
Trade-offs · 6.8/10April averages 8°C (47°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 89 mm, so plan one flexible day in three; you still get about 20 days with 6+ hours of sunshine and 14.1 hours of daylight.
It scores 6.8/10 here, 6th of 12 months, against 8.1/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
May in Belfast: strong conditions, 4th of 12
Good · 7.7/10Temperatures hover around 12°C (54°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 84 mm of rain this month — a flexible day or two helps — with about 23 days with 6+ hours of sunshine and 16.1 hours of daylight to work around it.
That is 7.7/10 on the same scale — 4th of 12 months, versus 8.1/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
June in Belfast tops the year's climate scores
Best window · 8.1/10June 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.
Rainfall runs 87 mm, so plan one flexible day in three; you still get about 25 days with 6+ hours of sunshine and 17.2 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Belfast at 8.1/10 — the reference point every other month on this page is measured against.
Plan for peak pricing, with 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 Belfast — reliably good (3rd best month)
Good · 7.8/10July averages 15°C (58°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Monthly rainfall reaches 107 mm — wet for this destination — but about 24 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 7.8/10 here, 3rd of 12 months, against 8.1/10 in the destination's best month.
Figure on peak pricing, with 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 in Belfast — reliably good (2nd best month)
Good · 7.9/10Temperatures hover around 15°C (59°F) — the kind of month where neither heat nor cold forces the schedule.
100 mm of rain makes this a wet month here, though with about 25 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 7.9/10 on the same scale — 2nd of 12 months, versus 8.1/10 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.
September holds up well in Belfast — 5th best month
Good · 7.3/10Temperatures hover around 13°C (56°F) — the kind of month where neither heat nor cold forces the schedule.
106 mm of rain makes this a wet month here, though with about 20 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 7.3/10 on the same scale — 5th of 12 months, versus 8.1/10 for the best month here.
Expect mid-season pricing, and 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.
October in Belfast: mixed conditions, plan around the weather
Trade-offs · 6/10October averages 11°C (52°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
At 118 mm this is a genuinely wet month: about 14 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 6/10 here, 10th of 12 months, against 8.1/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
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 2.1 points higher here — enough to change the trip.
November in Belfast: mixed conditions, plan around the weather
Trade-offs · 5.6/10November averages 8°C (46°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 78 mm, so plan one flexible day in three; you still get about 11 days with 6+ hours of sunshine and 8.5 hours of daylight.
It scores 5.6/10 here, 11th of 12 months, against 8.1/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Flexible dates? June scores 2.5 points higher here — enough to change the trip.
December in Belfast — the hardest end of the year
Hardest · 4.2/10Expect 6°C (43°F) in December. A good month for city streets, viewpoints and long meals; leave swimming for another season.
106 mm of rain signals a properly wet month, with only about 6 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 4.2/10 on the same scale — 12th of 12 months, versus 8.1/10 for the best month here.
Expect 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 proper rain shell rather than an umbrella.
If your dates are flexible, June is materially better in Belfast — 3.9 points higher on the same scale.
