Portsmouth Weather in May
With daytime temperatures of 26°C (79°F) and nighttime lows of 15°C (59°F), May in Portsmouth brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 110 mm (4.3 in) falls on average.
Rainfall in Portsmouth in May
Based on our climate data of the past 30 years, about 12 days of rain are anticipated, with 110 mm (4.3 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Portsmouth in May
In May, Portsmouth sees high temperatures, with highs of 26°C (79°F). Nights drop to around 15°C (59°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 15°C (59°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Portsmouth in May
The city usually sees around 276 hours of sunlight, indicating many sunny days — a great month for sightseeing.Our weather planner can help you find worldwide destinations with pleasant weather during this period. April typically offers the best weather for Portsmouth.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Portsmouth's climate page.
Portsmouth Temperature in May
Min Temperature
15°C (59°F)
Max Temperature
26°C (79°F)
Chance of Rain
38%
Precipitation
110 mm (4.3 in)
Rainy days
12 days
Humidity
67% *
Sunshine
276 hours *
Percentage Sunshine
62% *
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
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What to Wear in Portsmouth in May
Warm but pleasant conditions in Portsmouth in May. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Portsmouth in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Portsmouth's climate page.
Temperature Rainfall Sunshine Humidity
See the full Portsmouth climate overview or explore weather in the United States of America.
