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
Weather in May
Temperature
The shift into May is accompanied by a modest temperature increase, with the average high-temperature edging up from a cool 54.3°F (12.4°C) in April to an enjoyable 62.2°F (16.8°C). In May, Langley reports a consistent average low-temperature of 44.8°F (7.1°C) during the nights.Humidity
In Langley, the average relative humidity in May is 77%.Rainfall
In May, the rain falls for 13.3 days. Throughout May, 1.81" (46mm) of precipitation is accumulated. Throughout the year, there are 179.1 rainfall days, and 29.57" (751mm) of precipitation is accumulated.Snowfall
In Langley, snow does not fall in May through October.Ocean temperature
In May, the average ocean temperature is 46°F (7.8°C).Note: Diving into 46°F (7.8°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation.
Daylight
The average length of the day in May is 15h and 13min.On the first day of May, sunrise is at 5:49 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 5:14 am and sunset at 9:00 pm PDT.
Sunshine
In Langley, Washington, the average sunshine in May is 9.2h.UV index
The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
Does it snow in Langley in May?
How cold is the water in May?
How many hours of daylight does Langley have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May in Langley?
Average temperature in May
Langley, WA
- Average high temperature in May: 62.2°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in May: 44.8°F
The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).
Average pressure in May
Langley, WA
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in May
Langley, WA
- Average wind speed in May: 4.1mph
The windiest months (with the highest average wind speed) are March and November (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in May
Langley, WA
- Average humidity in May: 77%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (73%).
Average rainfall in May
Langley, WA
- Average rainfall in May: 1.81"
The wettest month (with the highest rainfall) is November (4.06").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in May
Langley, WA
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in May
Langley, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Langley, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Langley, WA
- Average sea temperature in May: 46.1°F
The best month for swimming (with the highest average sea temperature) is August (53.3°F).
The coldest months (with the lowest average sea temperature) are February and March (45.1°F).
Average daylight in May /
Average sunshine in May
Langley, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in May
Langley, WA
- Average sunshine days in May: 15.4 days
The month with the most sunshine days is August (23.1 days).
The months with the least sunshine days are February and November (8.6 days).
Average UV index in May
Langley, WA
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Langley, WA
- Average cloud cover in May: 42
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in May
Langley, WA
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
Langley, Washington, USA
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