The best time to visit Londonderry County Borough
Month-by-month climate averages for Londonderry County Borough, Northern Ireland, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Londonderry County Borough is usually May, June, July and August, when daytime highs sit in the pleasant 16-26°C range and the heaviest December rain is behind you.
Londonderry County Borough is warmest in June (highs near 18°C) and coldest in January (lows around 3°C), with roughly 1200 mm of precipitation across the year and December the wettest month. The sweet spot for most visitors is May, June, July and August.
These are long-run averages. For the actual days you are travelling, check the live Londonderry County Borough forecast — and note how much the models agree, because that tells you how much to trust it.
Londonderry County Borough weather by month
what to expect in Londonderry County Borough through the yearHere is Londonderry County Borough'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 Londonderry County Borough by season.