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 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
Weather in May
Temperature
An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a comfortable 62.2°F (16.8°C) to an agreeable 72°F (22.2°C). Throughout May nights, Lisbon experiences a consistent temperature average of 53.2°F (11.8°C).Humidity
May is the most humid month in Lisbon, with an average relative humidity of 80%.Rainfall
In Lisbon, during May, the rain falls for 18.1 days and regularly aggregates up to 3.5" (89mm) of precipitation. Throughout the year, there are 160.9 rainfall days, and 33.23" (844mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Lisbon aggregates 0.2" (5mm) of snow. In Lisbon, during the entire year, snow falls for 24.7 days and aggregates up to 14.88" (378mm) of snow.Daylight
The average length of the day in May is 14h and 21min.On the first day of the month, sunrise is at 6:08 am and sunset at 8:02 pm. On the last day of May, sunrise is at 5:43 am and sunset at 8:28 pm EDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
The months with the highest UV index in Lisbon are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 6 in May translates into the following instructions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the most humid month in Lisbon?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May in Lisbon?
What are the months with the highest UV index?
How high is the UV index in May?
Average temperature in May
Lisbon, MD
- Average high temperature in May: 72°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in May: 53.2°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in May
Lisbon, MD
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Lisbon, MD
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Lisbon, MD
- Average humidity in May: 80%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, April and July (75%).
Average rainfall in May
Lisbon, MD
- Average rainfall in May: 3.5"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is February (2.13").
Average rainfall days in May
Lisbon, MD
- Average rainfall days in May: 18.1 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in May
Lisbon, MD
- Average snowfall in May: 0.2"
The month with the highest snowfall is March (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Lisbon, MD
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Lisbon, MD
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).
Average sunshine days in May
Lisbon, MD
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in May
Lisbon, MD
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Lisbon, MD
- Average cloud cover in May: 46
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Lisbon, MD
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
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