The best time to visit Portsmouth
Month-by-month climate averages for Portsmouth, England, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Portsmouth is usually May, June, July and August, when daytime highs sit in the pleasant 16-26°C range and the heaviest October rain is behind you.
Portsmouth is warmest in June (highs near 21°C) and coldest in January (lows around 3°C), with roughly 1057 mm of precipitation across the year and October 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 Portsmouth forecast — and note how much the models agree, because that tells you how much to trust it.
Portsmouth weather by month
what to expect in Portsmouth through the yearHere is Portsmouth'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 Portsmouth by season.