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 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
May's weather displays an average high-temperature of a pleasant 20.1°C (68.2°F), slightly varied from April's 17.6°C (63.7°F). In May, Oeiras's nights cool slightly to a consistent average temperature of 15.3°C (59.5°F).Humidity
May and October, with an average relative humidity of 72%, are the least humid months.Rainfall
In May, in Oeiras, the rain falls for 6.9 days. Throughout May, 17mm (0.67") of precipitation is accumulated. Throughout the year, in Oeiras, there are 85.8 rainfall days, and 215mm (8.46") of precipitation is accumulated.Daylight
In Oeiras, the average length of the day in May is 14h and 17min.On the first day of the month, sunrise is at 06:38 and sunset at 20:29. On the last day of May, sunrise is at 06:14 and sunset at 20:55 WEST.
Sunshine
In Oeiras, Portugal, the average sunshine in May is 10.6h.UV index
In Oeiras, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 5 during May leads to these advisories:
Put precautions into practice - Protective measures against sun-induced damage are advised. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Oeiras?
What is the least humid month in Oeiras?
What is the average humidity in May in Oeiras?
How many days does it rain in May in Oeiras?
How many hours of daylight does Oeiras have in May?
When is the sunrise / sunset in May in Oeiras?
How long on average sun shines in May in Oeiras?
What is the UV index intensity in May in Oeiras?
Average temperature in May
Oeiras, Portugal
- Average high temperature in May: 20.1°C
The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (14.8°C).
- Average low temperature in May: 15.3°C
The month with the highest average low temperature is August (18.6°C).
The coldest month (with the lowest average low temperature) is February (10.8°C).
Average pressure in May
Oeiras, Portugal
- Average pressure in May: 1016.6mbar
The months with the highest atmospheric pressure are January and December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in May
Oeiras, Portugal
- Average wind speed in May: 18.2km/h
The windiest month (with the highest average wind speed) is February (19.5km/h).
The calmest month (with the lowest average wind speed) is October (15.6km/h).
Average humidity in May
Oeiras, Portugal
- Average humidity in May: 72%
The months with the highest relative humidity are January, April, July and December (75%).
The months with the lowest relative humidity are May and October (72%).
Average rainfall in May
Oeiras, Portugal
- Average rainfall in May: 17mm
The wettest month (with the highest rainfall) is November (44mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in May
Oeiras, Portugal
- Average rainfall days in May: 6.9 days
The month with the highest number of rainy days is November (12.4 days).
The month with the least rainy days is August (1.9 days).
Average daylight in May /
Average sunshine in May
Oeiras, Portugal
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 10h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).
Average sunshine days in May
Oeiras, Portugal
- Average sunshine days in May: 22.5 days
The month with the most sunshine days is August (28 days).
The month with the least sunshine days is November (15.6 days).
Average UV index in May
Oeiras, Portugal
- Average UV index in May: 5
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in May
Oeiras, Portugal
- Average cloud cover in May: 24
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Oeiras, Portugal
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
