July weather forecastUnalaska, AK
July
Weather in July
The heart of summer in July treats Unalaska with the warmest temperatures of the year, peaking at an average high of 53.2°F (11.8°C), coinciding with a lower rainfall value of 1.85" (47mm). The prevailing summer weather also exhibits longer daylight hours, although slightly fewer than in June. Despite being the warmest, the wind speed remains on the lower side, contributing to July's warm feel. The UV index elevates to three, necessitating the use of UV protection. The pressure is at its maximum, reaching 29.98" (761mm), indicating more stable weather conditions.Temperature
July brings a marginal elevation to a cool 50.5°F (10.3°C) from June's 46.4°F (8°C) in Unalaska's average high-temperatures. Unalaska's average temperature during the nights of July is recorded at a frosty 46.8°F (8.2°C).Humidity
With an average relative humidity of 91%, July is the most humid month.Rainfall
The month with the least rainfall is July, when the rain falls for 19.2 days and typically collects 1.85" (47mm) of precipitation.Snowfall
June through September are months without snowfall.Ocean temperature
In Unalaska, the average seawater temperature in July is 48.4°F (9.1°C).Note: It is life-risking to swim in 48.4°F (9.1°C). Briefly staying in 55.4°F (13°C) waters feels unsettling, and temperatures below 50°F (10°C) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
The average length of the day in July is 16h and 29min.On the first day of the month, sunrise is at 6:40 am and sunset at 11:40 pm. On the last day of July, sunrise is at 7:20 am and sunset at 11:04 pm AKDT.
Sunshine
In Unalaska, the average sunshine in July is 4.9h.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In July, a regular UV index of 3 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Unalaska, AK
- Average high temperature in July: 50.5°F
The warmest month (with the highest average high temperature) is August (53.2°F).
The month with the lowest average high temperature is March (34.7°F).
- Average low temperature in July: 46.8°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is March (30.7°F).
Average pressure in July
Unalaska, AK
- Average pressure in July: 29.98"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is January (29.5"Hg).
Average wind speed in July
Unalaska, AK
- Average wind speed in July: 9.1mph
The windiest months (with the highest average wind speed) are November and December (16.5mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in July
Unalaska, AK
- Average humidity in July: 91%
The month with the highest relative humidity is July (91%).
The months with the lowest relative humidity are November and December (80%).
Average rainfall in July
Unalaska, AK
- Average rainfall in July: 1.85"
The wettest month (with the highest rainfall) is December (4.21").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in July
Unalaska, AK
- Average rainfall days in July: 19.2 days
The month with the highest number of rainy days is October (21.8 days).
The month with the least rainy days is February (11.1 days).
Average snowfall in July
Unalaska, AK
- Average snowfall in July: 0"
The month with the highest snowfall is January (6.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Unalaska, AK
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in July
Unalaska, AK
- Average sea temperature in July: 48.4°F
The best month for swimming (with the highest average sea temperature) is August (50.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight in July /
Average sunshine in July
Unalaska, AK
- Average daylight in July: 16h and 30min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in July: 4h and 54min
The month with the most sunshine is June (Average sunshine: 5h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in July
Unalaska, AK
- Average sunshine days in July: 8.6 days
The month with the most sunshine days is August (9.7 days).
The month with the least sunshine days is April (3.8 days).
Average UV index in July
Unalaska, AK
- Average UV index in July: 3
The months with the highest UV index are July and August (UV index 3).
The months with the lowest UV index are February, March, April and November (UV index 1).
Average cloud cover in July
Unalaska, AK
- Average cloud cover in July: 74
The month with the most cloud cover is July (Cloud cover 74).
The months with the least cloud cover are September and October (Cloud cover 66).
Average visibility in July
Unalaska, AK
- Average visibility in July: 5mi
The months with the highest visibility are May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April, July and December (5mi).
