Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
The shift into May records an average high-temperature of an enjoyable 18.2°C (64.8°F), subtly varied from April's 15.3°C (59.5°F). In the month of May, the temperature in Portofino generally rests at an average low of 12.3°C (54.1°F).Humidity
In May, the average relative humidity in Portofino, Italy, is 77%.Rainfall
In May, in Portofino, the rain falls for 18.7 days. Throughout May, 68mm (2.68") of precipitation is accumulated. Throughout the year, in Portofino, Italy, there are 173.6 rainfall days, and 780mm (30.71") of precipitation is accumulated.Snowfall
April through November are months without snowfall in Portofino, Italy.Sea temperature
In May, the average sea temperature is 18.8°C (65.8°F).Note: Swimming in 18.8°C (65.8°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
Daylight
In May, the average length of the day is 14h and 47min.On the first day of May, sunrise is at 06:13 and sunset at 20:27. On the last day of the month, sunrise is at 05:42 and sunset at 20:59 CEST.
Sunshine
In Portofino, the average sunshine in May is 10.3h.UV index
In Portofino, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Portofino?
What is the average humidity in May in Portofino?
How many days does it rain in May in Portofino?
When it does not snow in Portofino?
What is the sea water temperature in May in Portofino?
What is the average length of the day in May in Portofino?
When is the sunrise / sunset in May in Portofino?
How many hours of sunshine does Portofino have in May?
What is the UV index reading in May in Portofino?
Average temperature in May
Portofino, Italy
- Average high temperature in May: 18.2°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in May: 12.3°C
The month with the highest average low temperature is August (19.3°C).
The coldest month (with the lowest average low temperature) is February (4.9°C).
Average pressure in May
Portofino, Italy
- Average pressure in May: 1013.9mbar
The month with the highest atmospheric pressure is December (1018.7mbar).
The months with the lowest atmospheric pressure are April, May and July (1013.9mbar).
Average wind speed in May
Portofino, Italy
- Average wind speed in May: 9.4km/h
The windiest month (with the highest average wind speed) is February (12.2km/h).
The calmest month (with the lowest average wind speed) is August (7.8km/h).
Average humidity in May
Portofino, Italy
- Average humidity in May: 77%
The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is August (72%).
Average rainfall in May
Portofino, Italy
- Average rainfall in May: 68mm
The wettest month (with the highest rainfall) is November (118mm).
The driest month (with the least rainfall) is September (47mm).
Average rainfall days in May
Portofino, Italy
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (11.3 days).
Average snowfall in May
Portofino, Italy
- Average snowfall in May: 0mm
The month with the highest snowfall is March (6mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in May
Portofino, Italy
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in May
Portofino, Italy
- Average sea temperature in May: 18.8°C
The best month for swimming (with the highest average sea temperature) is August (24.4°C).
The coldest month (with the lowest average sea temperature) is February (13°C).
Average daylight in May /
Average sunshine in May
Portofino, Italy
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 10h and 2min
The months with the most sunshine are June and July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in May
Portofino, Italy
- Average sunshine days in May: 8.8 days
The month with the most sunshine days is January (17.1 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in May
Portofino, Italy
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in May
Portofino, Italy
- Average cloud cover in May: 31
The month with the most cloud cover is November (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in May
Portofino, Italy
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
