May weather forecast and climate
Anchorage, AK

Wintertime in Anchorage, Alaska, with mountains blanketed in snow
Wintertime in Anchorage, Alaska, with mountains blanketed in snow
The last month of the spring, May, is a mild month in Anchorage, Alaska, with average temperature ranging between max 56.8°F (13.8°C) and min 38.8°F (3.8°C).

Temperature

In Anchorage, in May, the average high-temperature is 56.8°F (13.8°C), and the average low-temperature is 38.8°F (3.8°C).

Humidity

The least humid month in Anchorage is May, with an average relative humidity of 61.6%.

Rainfall

In May, the rain falls for 7 days. Throughout May, 0.8" (19.3mm) of precipitation is accumulated. Throughout the year, in Anchorage, there are 115.1 rainfall days, and 16.7" (423.4mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Anchorage are January through May, September through December.

Ocean temperature

In Anchorage, in May, the average water temperature is 42.4°F (5.8°C). Swimming in 42.4°F (5.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in Anchorage is 17.6h.

Sunshine

With an average of 9.3h of sunshine, May has the most sunshine of the year.

UV index

In Anchorage, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for the average person.
The average daily UV index of 4 in May transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Anchorage?

The average high-temperature, in May, in Anchorage, Alaska, is 56.8°F (13.8°C), while the average low-temperature is 38.8°F (3.8°C).

What is the least humid month in Anchorage?

With an average relative humidity of 61.6%, May is the least humid month.

What is the average humidity in May in Anchorage?

In May, the average relative humidity is 61.6%.

How much does it rain in Anchorage in May?

In May, in Anchorage, Alaska, the rain falls for 7 days. Throughout May, 0.8" (19.3mm) of precipitation is accumulated.

What is the last month it snows in Anchorage?

May is the last month it regularly snows in Anchorage. During 0.5 snowfall days, in May, Anchorage aggregates 0.6" (15.2mm) of snow.

What is the ocean temperature in May in Anchorage?

In May, the average ocean temperature is 42.4°F (5.8°C). Swimming in 42.4°F (5.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

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

In May, the average length of the day in Anchorage is 17.6h.

What month has the most sunshine in Anchorage?

With an average of 9.3h of sunshine, May has the most sunshine of the year.

How long on average sun shines in May in Anchorage?

In Anchorage, the average sunshine in May is 9.3h.

What is the UV index reading in May in Anchorage?

The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in May - Anchorage, AK
  • Average high temperature in May: 56.9°F

The warmest month (with the highest average high temperature) is July (65.4°F).
The month with the lowest average high temperature is January (22.7°F).

  • Average low temperature in May: 38.9°F

The month with the highest average low temperature is July (51.3°F).
The coldest month (with the lowest average low temperature) is January (11.4°F).

Average humidity in May - Anchorage, AK
  • Average humidity in May: 61.6%

Months with the highest relative humidity are November and December (77.1%).
The month with the lowest relative humidity is May (61.6%).

Average rainfall in May - Anchorage, AK
  • Average rainfall in May: 0.8"

The wettest month (with the highest rainfall) is August (3.3").
The driest month (with the lowest rainfall) is April (0.5").

Average rainfall days in May - Anchorage, AK
  • Average rainfall days in May: 7 days

The month with the highest number of rainy days is September (14.5 days).
The month with the lowest number of rainy days is April (5.5 days).

Average snowfall in May - Anchorage, AK
  • Average snowfall in May: 0.6"

The month with the highest snowfall is December (20.5").
Months with the lowest snowfall are June, July and August (0").

Average snowfall days in May - Anchorage, AK
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is December (10.5 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average sea temperature in May - Anchorage, AK
  • Average sea temperature in May: 42.4°F

The best month for swimming (with the highest average sea temperature) is August (53.1°F).
The coldest month (with the lowest average sea temperature) is February (35.8°F).

Average daylight in May / Average sunshine in May - Anchorage, AK
  • Average daylight in May: 17.6h

The month with the longest days is June (Average daylight: 19.2h).
The month with shortest days is December (Average daylight: 5.6h).

  • Average sunshine in May: 9.3h

The month with most sunshine is May (Average sunshine: 9.3h).
The month with least sunshine is December (Average sunshine: 1.7h).

Average UV index in May - Anchorage, AK
  • Average UV index in May: 4

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, February, November and December (UV index 0).

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