May weather forecast and climate
New Hampshire, USA

Flag of New Hampshire, USA
Flag of New Hampshire, USA

Weather in May

May is a beautiful spring month in New Hampshire with comfortably warm weather conditions. The average high temperatures are in the pleasant 60°F (15.6°C) to 70°F (21.1°C), while the nights are in the average range of 40°F (4.4°C) to 45°F (7.2°C).
The chirping of birds, fresh aroma of flowers, freshwater in ponds, lakes, and rivers, and the warmth of the sun creates a brilliant atmosphere full of energy and activity. Biking, hiking, kayaking, fishing, and other activities gather steam in the usually brilliant weather.
Many wet days register in May as the average rainfall is to the tune of 4" (102mm) to 5" (127mm).
The ocean water temperature is colder than the land and averages 50°F (10°C) in Portsmouth. Keene in the south averages a warm 42°F (5.6°C) to 70°F (21.1°C), while Colebrook in the north is in the average range of 38°F (3.3°C) to 64°F (17.8°C).
May is an excellent time to beat the summer crowds and enjoy the spring days - the nights require layers of clothing and keep in mind that rain is always unpredictable.


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