May weather - Spring 2024

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

Part of the famed Cannery fishing village along the Pacific Ocean in Haines, Alaska, with a forest background and snow-peaked mountain glaciers

Weather in May

May sees the transformation of Haines into a warm, spring paradise. Minimal snowfall and rising temperatures set a promising stage for summer's arrival. Residents exchange their winter gear for spring clothing as they get ready to enjoy longer daylight hours and more abundant sunshine. Haines blooms with a diverse array of wildflowers, the vibrant colors against the pristine skies a sight to behold. As the month progresses, the increased sunlight dispels the residual winter gloom, bathing the city in a pleasant warmth.

Temperature

May comes with an increase, with the average high-temperature moving from a wintry 35.2°F (1.8°C) in April to a chilly 46.2°F (7.9°C). Haines reports an average low-temperature of 33.8°F (1°C) during the nights of May.

Humidity

The least humid month is May, with an average relative humidity of 78%.

Rainfall

In Haines, in May, during 17.7 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, there are 200.4 rainfall days, and 48.03" (1220mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.5 snowfall days, in May, Haines aggregates 0.08" (2mm) of snow. In Haines, during the entire year, snow falls for 83.4 days and aggregates up to 86.57" (2199mm) of snow.

Ocean temperature

In Haines, the average seawater temperature in May is 43.3°F (6.3°C).
Note: It is risky to swim in 43.3°F (6.3°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.

Daylight

In Haines, the average length of the day in May is 17h and 2min.
On the first day of May, sunrise is at 5:00 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 3:57 am and sunset at 10:01 pm AKDT.

Sunshine

The average sunshine in May is 8.9h.

UV index

In Haines, the average daily maximum UV index in May is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 2 during May, leads to the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.

Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May in Haines?

The average high-temperature and low-temperature during May are 46.2°F (7.9°C) and 33.8°F (1°C) respectively.

What is the least humid month?

May is the least humid month, with an average relative humidity of 78%.

What is the average humidity in May in Haines?

In May, the average relative humidity is 78%.

How many days does it rain in May?

In Haines, during May, the rain falls for 17.7 days and regularly aggregates up to 2.28" (58mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.5 snowfall days, in May, Haines aggregates 0.08" (2mm) of snow.

How cold is the water in May?

In Haines, in May, the average water temperature is 43.3°F (6.3°C). Swimming in 43.3°F (6.3°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.

What is the average length of the day in May?

In Haines, the average day length in May is 17h and 2min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 5:00 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 3:57 am and sunset at 10:01 pm AKDT.

How many hours of sunshine does Haines have in May?

In Haines, the average sunshine duration in May is 8.9h.

What is the UV index reading in May in Haines?

In Haines, the average daily maximum UV index in May is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

35.2°F 1.8°C

46.2°F 7.9°C

51.4°F 10.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.3mph 8.5km/h

5.2mph 8.4km/h

5.3mph 8.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.5

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

6.7

6.3

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Haines, AK

Average high temperature in May: 46.2°F

The warmest month (with the highest average high temperature) is July (56.5°F).
The month with the lowest average high temperature is January (21.6°F).

Average low temperature in May: 33.8°F

The month with the highest average low temperature is August (44.1°F).
The coldest month (with the lowest average low temperature) is February (12.4°F).

Average pressure in May
Haines, AK

Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is July (30.01"Hg).
The month with the lowest atmospheric pressure is November (29.81"Hg).

Average wind speed in May
Haines, AK

Average wind speed in May: 4.7mph

The windiest month (with the highest average wind speed) is January (6.7mph).
The calmest month (with the lowest average wind speed) is May (4.7mph).

Average humidity in May
Haines, AK

Average humidity in May: 78%

The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (78%).

Average rainfall in May
Haines, AK

Average rainfall in May: 2.28"

The wettest month (with the highest rainfall) is November (5.87").
The driest month (with the least rainfall) is June (2.2").

Average rainfall days in May
Haines, AK

Average rainfall days in May: 17.7 days

The month with the highest number of rainy days is October (20.2 days).
The month with the least rainy days is February (9.3 days).

Average snowfall in May
Haines, AK

Average snowfall in May: 0.08"

The month with the highest snowfall is December (21.06").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Haines, AK

Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is December (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in May
Haines, AK

Average sea temperature in May: 43.2°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 March (39.6°F).

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

Average daylight in May: 17h and 0min

The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).

Average sunshine in May: 8h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).

Average sunshine days in May
Haines, AK

Average sunshine days in May: 10 days

The month with the most sunshine days is February (10.4 days).
The month with the least sunshine days is June (6.3 days).

Average UV index in May
Haines, AK

Average UV index in May: 2

The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February, November and December (UV index 1).

Average cloud cover in May
Haines, AK

Average cloud cover in May: 47

The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 47).

Average visibility in May
Haines, AK

Average visibility in May: 5mi

The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).

May weather forecast
Haines, AK

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