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
Port Heiden perceives a slight temperature ascent during May, with average high-temperatures adjusting from a wintry 37.8°F (3.2°C) in April to a chilly 46°F (7.8°C). Throughout May, Port Heiden observes a steady low-temperature average of 37.9°F (3.3°C), reflecting a minor dip from daytime highs.Humidity
May is the least humid month, with an average relative humidity of 78%.Rainfall
In Port Heiden, in May, it is raining for 13.7 days, with typically 0.87" (22mm) of accumulated precipitation. In Port Heiden, during the entire year, the rain falls for 160.7 days and collects up to 16.57" (421mm) of precipitation.Snowfall
Months with snowfall in Port Heiden are January through May, September through December. May is the last month it regularly snows in Port Heiden, Alaska. During 3.2 snowfall days, in May, Port Heiden aggregates 0.55" (14mm) of snow. In Port Heiden, during the entire year, snow falls for 83.4 days and aggregates up to 23.94" (608mm) of snow.Daylight
The average length of the day in May is 16h and 33min.On the first day of the month, sunrise is at 6:43 am and sunset at 10:19 pm. On the last day of May, in Port Heiden, sunrise is at 5:49 am and sunset at 11:15 pm AKDT.
Sunshine
With an average of 7.7h of sunshine, May has the most sunshine of the year in Port Heiden.UV index
May through September, with an average maximum UV index of 3, are months with the highest UV index in Port Heiden. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 3 in May suggests the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the temperature in May in Port Heiden?
What is the least humid month in Port Heiden?
What is the average humidity in May in Port Heiden?
How many days does it rain in May in Port Heiden?
What is the last month it snows in Port Heiden?
What is the average length of the day in May in Port Heiden?
What time are sunrise and sunset in May in Port Heiden?
What month has the most sunshine in Port Heiden?
How long on average sun shines in May in Port Heiden?
When is the highest UV index in Port Heiden?
How high is the UV index in May in Port Heiden?
Average temperature in May
Port Heiden, AK
- Average high temperature in May: 46°F
The warmest month (with the highest average high temperature) is August (56.8°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in May: 37.9°F
The month with the highest average low temperature is August (49.1°F).
The coldest months (with the lowest average low temperature) are January and March (23.4°F).
Average pressure in May
Port Heiden, AK
- Average pressure in May: 29.86"Hg
The month with the highest atmospheric pressure is July (29.97"Hg).
The month with the lowest atmospheric pressure is December (29.54"Hg).
Average wind speed in May
Port Heiden, AK
- Average wind speed in May: 10.6mph
The windiest month (with the highest average wind speed) is December (14.8mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in May
Port Heiden, AK
- Average humidity in May: 78%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (78%).
Average rainfall in May
Port Heiden, AK
- Average rainfall in May: 0.87"
The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is June (0.83").
Average rainfall days in May
Port Heiden, AK
- Average rainfall days in May: 13.7 days
The month with the highest number of rainy days is September (19.2 days).
The month with the least rainy days is March (7.6 days).
Average snowfall in May
Port Heiden, AK
- Average snowfall in May: 0.55"
The month with the highest snowfall is December (5.71").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Port Heiden, AK
- Average snowfall days in May: 3.2 days
The month with the highest number of snowfall days is December (15.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Port Heiden, 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 54min).
- Average sunshine in May: 7h and 4min
The month with the most sunshine is May (Average sunshine: 7h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in May
Port Heiden, AK
- Average sunshine days in May: 13 days
The month with the most sunshine days is May (13 days).
The month with the least sunshine days is November (6 days).
Average UV index in May
Port Heiden, AK
- Average UV index in May: 3
The months with the highest UV index are May, June, July, August and September (UV index 3).
The months with the lowest UV index are February, March, November and December (UV index 1).
Average cloud cover in May
Port Heiden, AK
- Average cloud cover in May: 59
The month with the most cloud cover is July (Cloud cover 69).
The month with the least cloud cover is May (Cloud cover 59).
Average visibility in May
Port Heiden, AK
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).
Port Heiden, Alaska, USA
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