May weather forecast and climate
Sitka, AK

The glacial carved Three Sisters Mountains in Sitka, Alaska
The glacial carved Three Sisters Mountains in Sitka, Alaska

Weather in May

May, the last month of the spring, in Sitka, is a frosty month, with average temperature fluctuating between 49.6°F (9.8°C) and 41.5°F (5.3°C).

Temperature

In Sitka, the average high-temperature slightly increases, from a cold 42.3°F (5.7°C) in April, to a chilly 49.6°F (9.8°C). The average low-temperature, in Sitka, Alaska, is 41.5°F (5.3°C).

Humidity

In Sitka, Alaska, the average relative humidity is 85%.

Rainfall

The month with the least rainfall is May when the rain falls for 19.9 days and typically collects 3.82" (97mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Sitka. May is the last month it regularly snows in Sitka. During 0.2 snowfall days, 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

In May, the average length of the day is 16.6h.

Sunshine

May has the most sunshine of the year in Sitka, Alaska, with an average of 6.5h of sunshine.

UV index

In Sitka, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Sitka?

In Sitka, in May, the average high-temperature is 49.6°F (9.8°C), and the average low-temperature is 41.5°F (5.3°C).

What is the average humidity in May in Sitka?

In May, the average relative humidity in Sitka is 85%.

How many days does it rain in May in Sitka?

In Sitka, in May, during 19.9 rainfall days, 3.82" (97mm) of precipitation is typically accumulated.

What is the driest month in Sitka?

The month with the least rainfall is May when the rain falls for 19.9 days and typically collects 3.82" (97mm) of precipitation.

What is the last month it snows in Sitka?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Sitka aggregates 0.12" (3mm) of snow.

What is the average length of the day in May in Sitka?

In May, the average length of the day is 16.6h.

What month has the most sunshine in Sitka?

With an average of 6.5h of sunshine, May has the most sunshine of the year in Sitka.

How long on average sun shines in May in Sitka?

The average sunshine in May is 6.5h.

What is the UV index intensity in May in Sitka?

In Sitka, the average daily maximum UV index in May is 3. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in May
Sitka, AK

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).

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Average pressure in May
Sitka, AK

Average pressure in May - Sitka, AK
  • Average pressure in May: 30"

The month with the highest atmospheric pressure is July (30.05").
The month with the lowest atmospheric pressure is November (29.72").

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Average wind speed in May
Sitka, AK

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).

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Average humidity in May
Sitka, AK

Average humidity in May - Sitka, AK
  • Average humidity in May: 85%

The month with the highest relative humidity is August (89%).
Months with the lowest relative humidity are February and March (83%).

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Average rainfall in May
Sitka, AK

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").

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Average rainfall days in May
Sitka, AK

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).

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Average snowfall in May
Sitka, AK

Average snowfall in May - Sitka, AK
  • Average snowfall in May: 0.12"

The month with the highest snowfall is March (17.72").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Sitka, AK

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).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Sitka, AK

Average daylight in May / Average sunshine in May - Sitka, AK
  • Average daylight in May: 16.6h

The month with the longest days is June (Average daylight: 17.8h).
The month with the shortest days is December (Average daylight: 6.8h).

  • Average sunshine in May: 6.5h

The month with the most sunshine is May (Average sunshine: 6.5h).
The month with the least sunshine is January (Average sunshine: 2.7h).

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Average sunshine days in May
Sitka, AK

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).

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Average UV index in May
Sitka, AK

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).
Months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in May
Sitka, AK

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).
Months with the least cloud cover are February, May and September (Cloud cover 60).

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Average visibility in May
Sitka, AK

Average visibility in May - Sitka, AK
  • Average visibility in May: 6mi

Months with the highest visibility are February, March, April, May, September, October, November and December (6mi).
Months with the lowest visibility are January, June, July and August (5mi).

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