May
Weather in May
Temperature
The advent of May brings an average high-temperature of a still comfortable 19.5°C (67.1°F), exhibiting minor difference from the previous month. In May, Santa Maria Island records an average nighttime temperature of 13.9°C (57°F).Humidity
April, May, July and August, with an average relative humidity of 75%, are the least humid months.Rainfall
In May, the rain falls for 5 days. Throughout May, 30mm (1.18") of precipitation is accumulated. In Santa Maria Island, during the entire year, the rain falls for 100 days and collects up to 775mm (30.51") of precipitation.Sea temperature
In Santa Maria Island, the average seawater temperature in May is 18°C (64.4°F).Note: Swimming in water of 18°C (64.4°F) is not enjoyable for the majority of individuals. Breathing control becomes increasingly challenging as the temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Santa Maria Island, Portugal, the average length of the day in May is 14h and 10min.On the first day of May, sunrise is at 06:45 and sunset at 20:29. On the last day of the month, sunrise is at 06:22 and sunset at 20:54 +00.
Sunshine
The average sunshine in May is 7h.UV index
The average daily maximum UV index in May is 8. A UV Index of 8 to 10 symbolizes a very high health hazard from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 8 in May interprets into the following advice:
Always be careful, as unprotected skin and eyes might burn in no time. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What are the least humid months?
What is the average humidity in May?
How many days does it rain in May?
What is the sea temperature in May?
How many hours of daylight does Santa Maria Island have in May?
What time are sunrise and sunset in May in Santa Maria Island?
How many hours of sunshine does Santa Maria Island have in May?
What is the UV index intensity in May?
Average temperature in May
Santa Maria Island, Portugal
- Average high temperature in May: 19.5°C
The warmest month (with the highest average high temperature) is August (25.1°C).
The month with the lowest average high temperature is February (16.5°C).
- Average low temperature in May: 13.9°C
The month with the highest average low temperature is August (19.2°C).
The coldest month (with the lowest average low temperature) is February (11.5°C).
Average humidity in May
Santa Maria Island, Portugal
- Average humidity in May: 75%
The months with the highest relative humidity are January and December (79%).
The months with the lowest relative humidity are April, May, July and August (75%).
Average rainfall in May
Santa Maria Island, Portugal
- Average rainfall in May: 30mm
The wettest month (with the highest rainfall) is November (102mm).
The driest month (with the least rainfall) is June (22mm).
Average rainfall days in May
Santa Maria Island, Portugal
- Average rainfall days in May: 5 days
The months with the highest number of rainy days are January and December (12 days).
The months with the least rainy days are June and July (4 days).
Average sea temperature in May
Santa Maria Island, Portugal
- Average sea temperature in May: 18°C
The best month for swimming (with the highest average sea temperature) is August (24°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (17°C).
Average daylight in May /
Average sunshine in May
Santa Maria Island, Portugal
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 7h
The month with the most sunshine is July (Average sunshine: 8h).
The month with the least sunshine is January (Average sunshine: 3h).
Average UV index in May
Santa Maria Island, Portugal
- Average UV index in May: 8
The months with the highest UV index are June, July and August (UV index 9).
The months with the lowest UV index are January and December (UV index 2).
