The best time to visit Belfast
Month-by-month climate averages for Belfast, Northern Ireland, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Belfast is usually June, July, August and September, when daytime highs sit in the pleasant 16-26°C range and the heaviest October rain is behind you.
Belfast is warmest in August (highs near 18°C) and coldest in February (lows around 2°C), with roughly 1021 mm of precipitation across the year and October the wettest month. The sweet spot for most visitors is June, July, August and September.
These are long-run averages. For the actual days you are travelling, check the live Belfast forecast - and note how much the models agree, because that tells you how much to trust it.
Belfast weather by month
what to expect in Belfast through the year, 1991-2020 averagesHere is Belfast's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Belfast by season.