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
In Sitka, the average high-temperature in May slightly rises, from a wintry 42.3°F (5.7°C) in April, to a frosty 49.6°F (9.8°C). Sitka experiences a steady nighttime temperature of 41.5°F (5.3°C) throughout the month of May.Humidity
In Sitka, the average relative humidity in May is 85%.Rainfall
May is the month with the least rainfall. Rain falls for 19.9 days and accumulates 3.82" (97mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Sitka aggregates 0.12" (3mm) of snow. Throughout the year, there are 52.4 snowfall days, and 63.58" (1615mm) of snow is accumulated.Daylight
The average length of the day in May is 16h and 34min.On the first day of the month, sunrise is at 5:10 am and sunset at 8:46 pm. On the last day of May, sunrise is at 4:15 am and sunset at 9:42 pm AKDT.
Sunshine
May has the most sunshine of the year, with an average of 6.5h of sunshine.UV index
In May, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 3 during May translates into the following guidance:
Take necessary precautions - Defending against sun damage is advocated. Around midday, solar radiation is most harmful; hence, exposure should be limited. During bright days, sunglasses that offer UVA and UVB defense are recommended. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
What is the driest month?
How many days does it rain in May?
What is the last month it snows in Sitka?
How many hours of daylight does Sitka have in May?
When are sunrise and sunset in May?
What month has the most sunshine in Sitka?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Sitka, AK
- Average high temperature in May: 49.6°F
The warmest month (with the highest average high temperature) is August (57.9°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in May: 41.5°F
The month with the highest average low temperature is August (51.1°F).
The coldest month (with the lowest average low temperature) is February (29.7°F).
Average pressure in May
Sitka, AK
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is July (30.05"Hg).
The month with the lowest atmospheric pressure is November (29.72"Hg).
Average wind speed in May
Sitka, AK
- Average wind speed in May: 5.9mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in May
Sitka, AK
- Average humidity in May: 85%
The month with the highest relative humidity is August (89%).
The months with the lowest relative humidity are February and March (83%).
Average rainfall in May
Sitka, AK
- Average rainfall in May: 3.82"
The wettest month (with the highest rainfall) is November (10.16").
The driest month (with the least rainfall) is May (3.82").
Average rainfall days in May
Sitka, AK
- Average rainfall days in May: 19.9 days
The month with the highest number of rainy days is October (23.5 days).
The month with the least rainy days is February (14.6 days).
Average snowfall in May
Sitka, AK
- Average snowfall in May: 0.12"
The month with the highest snowfall is March (17.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Sitka, AK
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is March (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sitka, AK
- Average daylight in May: 16h and 4min
The month with the longest days is June (Average daylight: 17h and 48min).
The month with the shortest days is December (Average daylight: 6h and 48min).
- Average sunshine in May: 6h and 3min
The month with the most sunshine is May (Average sunshine: 6h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in May
Sitka, AK
- Average sunshine days in May: 8.8 days
The month with the most sunshine days is May (8.8 days).
The month with the least sunshine days is June (4.8 days).
Average UV index in May
Sitka, AK
- Average UV index in May: 3
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in May
Sitka, AK
- Average cloud cover in May: 60
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are February, May and September (Cloud cover 60).
Average visibility in May
Sitka, AK
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, September, October, November and December (6mi).
The months with the lowest visibility are January, June, July and August (5mi).
Sitka, Alaska, USA
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