Port Glasgow Weather in May

What's the weather like in Port Glasgow (Scotland) in May 2025?

The climate in Port Glasgow during May can be summarized as cool and damp.

May is in the spring in Port Glasgow and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 13°C (56°F), whilst at night 5°C (42°F) is normal.

Port Glasgow weather averages (imperial / metric)
Daytime temperature 13.2°C 55.8°F
Nightly temperature 5.4°C 41.7°F
Average temperature 9.3°C 48.7°F
Daily sunshine 6.2 hrs
Avg rainfall 119 mm 4.7 ins
Rainy days 18 days
Sea temperature 9.8°C 49.6°F
Humidity 79%
Windspeed 16.6kph 10 mph

On average May is the 3rd driest month of the year in Port Glasgow with around 119mm 4.7 inches of rain making it a damp time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.2 hours of sunshine per day.

May temperatures in Port Glasgow

Port Glasgow average temperature in May

May rainfall

Port Glasgow average rain in May

May hourly sunshine

Port Glasgow average rain in May

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Port Glasgow in May 2024.

Other monthly averages

Best places to visit in May

UV index Best time to go?

Port Glasgow weather stats

Port Glasgow weather statistics
Hottest month: July 16.9°C 62.4°F
Driest month: April 107mm 4.2ins
Sunniest month: May 6.2hrs
Coldest month: February 4.9°C 40.8°F
Wettest month: October 232mm 9.1ins
Map showing location of Port Glasgow (55.93464, -4.6895) Port Glasgow map pin © Google

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